src/drw_entities.cpp

Bug Summary

File:	libraries/libdxfrw/src/drw_entities.cpp
Warning:	line 6859, column 5 Called C++ object pointer is null
Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name drw_entities.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/home/runner/work/LibreCAD/LibreCAD/libraries/libdxfrw -fcoverage-compilation-dir=/home/runner/work/LibreCAD/LibreCAD/libraries/libdxfrw -resource-dir /usr/lib/llvm-18/lib/clang/18 -D _REENTRANT -D MUPARSER_STATIC -D QT_NO_DEBUG -I . -I ../../../Qt/6.9.0/gcc_64/mkspecs/linux-g++ -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/14/../../../../include/x86_64-linux-gnu/c++/14 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14/backward -internal-isystem /usr/lib/llvm-18/lib/clang/18/include -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -std=gnu++1z -fdeprecated-macro -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcxx-exceptions -fexceptions -vectorize-loops -vectorize-slp -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/runner/work/LibreCAD/LibreCAD/out/2026-07-14-153100-5089-1 -x c++ src/drw_entities.cpp
1/******************************************************************************
2**  libDXFrw - Library to read/write DXF files (ascii & binary)              **
3**                                                                           **
4**  Copyright (C) 2016-2022 A. Stebich (librecad@mail.lordofbikes.de)        **
5**  Copyright (C) 2011-2015 José F. Soriano, rallazz@gmail.com               **
6**  Copyright (C) 2026 LibreCAD (librecad.org)                                **
7**                                                                           **
8**  This library is free software, licensed under the terms of the GNU       **
9**  General Public License as published by the Free Software Foundation,     **
10**  either version 2 of the License, or (at your option) any later version.  **
11**  You should have received a copy of the GNU General Public License        **
12**  along with this program.  If not, see <http://www.gnu.org/licenses/>.    **
13******************************************************************************/

15#include <algorithm>
16#include <cmath>
17#include <cstdio>
18#include <cstdlib>
19#include <cstring>
20#include <limits>
21#include <vector>
22#include "drw_entities.h"
23#include "intern/dxfreader.h"
24#include "intern/dwgbuffer.h"
25#include "intern/dwgbufferw.h"
26#include "intern/drw_textcodec.h"
27#include "intern/drw_dbg.h"
28#include "intern/drw_reserve.h"
29#include "intern/dwgreader.h"

31namespace {

33constexpr std::uint32_t kMaxTableRows = 10000;
34constexpr std::uint32_t kMaxTableColumns = 1000;
35constexpr std::uint32_t kMaxTableCells = 200000;
36constexpr std::uint32_t kMaxTableItems = 100000;
37constexpr std::uint32_t kMaxTableStringBytes = 16 * 1024 * 1024;
38constexpr std::int32_t kMaxLWPolylineVertices = 1000000;
39constexpr std::int32_t kMaxSplineItems = 1000000;
40constexpr std::int32_t kMaxSplineDegree = 1024;

42constexpr std::int32_t kSplineFlagMethodFitPoints = 1;
43constexpr std::int32_t kSplineFlagClosed = 4;
44constexpr std::int32_t kSplineFlagUseKnotParameter = 8;
45constexpr std::int32_t kSplineKnotParamCustom = 15;

47bool isValidCount(std::int32_t count, std::int32_t maxCount) {
  return count >= 0 && count <= maxCount;
49}

51int hexNibble(char c) {
  if (c >= '0' && c <= '9')
      return c - '0';
  if (c >= 'A' && c <= 'F')
      return c - 'A' + 10;
  if (c >= 'a' && c <= 'f')
      return c - 'a' + 10;
  return -1;
59}

61bool decodeHexBytes(const std::string& hex, std::vector<std::uint8_t>& out) {
  if ((hex.size() % 2) != 0)
      return false;

  std::vector<std::uint8_t> decoded;
  decoded.reserve(hex.size() / 2);
  for (std::size_t i = 0; i < hex.size(); i += 2) {
      const int hi = hexNibble(hex[i]);
      const int lo = hexNibble(hex[i + 1]);
      if (hi < 0 || lo < 0)
          return false;
      decoded.push_back(static_cast<std::uint8_t>((hi << 4) | lo));
  }

  out = std::move(decoded);
  return true;
77}

79void appendBytes(std::vector<std::uint8_t>& out,
               const std::vector<std::uint8_t>& bytes) {
  out.insert(out.end(), bytes.begin(), bytes.end());
82}

84void appendTextBytes(std::vector<std::uint8_t>& out, const std::string& text) {
  out.insert(out.end(), text.begin(), text.end());
86}

88std::uint64_t currentDwgBit(const dwgBuffer *buf) {
  return buf->getPosition() * 8 + buf->getBitPos();
90}

92DRW_DwgSubrecordRange makeDwgSubrecordRange(const char *name, std::uint64_t startBit,
                                          std::uint64_t endBit, DRW::Version version,
                                          std::uint32_t count, bool parseComplete) {
  DRW_DwgSubrecordRange range;
  range.m_name = name;
  range.m_startBit = startBit;
  range.m_bitSize = endBit >= startBit ? endBit - startBit : 0;
  range.m_version = version;
  range.m_count = count;
  range.m_parseComplete = parseComplete;
  return range;
103}

105bool isValidSplineDegree(int degree) {
  return degree >= 1 && degree <= kMaxSplineDegree;
107}

109bool isValidControlSplineLayout(int degree, std::int32_t knotCount, std::int32_t controlCount) {
  if (!isValidSplineDegree(degree) || !isValidCount(knotCount, kMaxSplineItems) ||
      !isValidCount(controlCount, kMaxSplineItems)) {
      return false;
  }

  if (controlCount < degree + 1) {
      return false;
  }

  const std::int64_t expectedKnots = static_cast<std::int64_t>(controlCount) + degree + 1;
  return expectedKnots <= kMaxSplineItems && knotCount == expectedKnots;
121}

123bool isValidFitSplineLayout(int degree, std::int32_t fitCount) {
  return isValidSplineDegree(degree) && isValidCount(fitCount, kMaxSplineItems) &&
         fitCount >= 2;
126}

128bool differsFromUnitWeight(double weight) {
  return std::fabs(weight - 1.0) > 1e-12;
130}

132void putHardPointerHandle(dwgBufferW *buf, std::uint32_t ref) {
  dwgHandle h;
  h.code = 5;
  h.ref = ref;
  h.size = 0;
  if (ref != 0) {
      std::uint32_t t = ref;
      while (t != 0) {
          t >>= 8;
          ++h.size;
      }
  }
  buf->putHandle(h);
145}

147void putNullableHardPointerHandle(dwgBufferW *buf, std::uint32_t ref) {
  dwgHandle h;
  h.code = ref == 0 ? 0 : 5;
  h.ref = ref;
  h.size = 0;
  if (ref != 0) {
      std::uint32_t t = ref;
      while (t != 0) {
          t >>= 8;
          ++h.size;
      }
  }
  buf->putHandle(h);
160}

162std::uint16_t bitShortFromInt(int value) {
  if (value < 0)
      return 0;
  if (value > 0xffff)
      return 0xffff;
  return static_cast<std::uint16_t>(value);
168}

170std::uint32_t readTableHandle(dwgBuffer *hdlBuf) {
  if (hdlBuf == nullptr || !hdlBuf->isGood())
      return 0;
  dwgHandle h = hdlBuf->getHandle();
  return h.ref;
175}

177void seekTableObjectHandleStream(DRW::Version version, dwgBuffer *buf, std::uint32_t objSize) {
  if (version > DRW::AC1018) {
      buf->setPosition(objSize >> 3);
      buf->setBitPos(objSize & 7);
  }
182}

184void readTableObjectCommonHandles(dwgBuffer *buf, std::uint32_t baseHandle,
                                std::int32_t numReactors, std::uint8_t xDictFlag,
                                int *parentHandle) {
  dwgHandle parentH = buf->getOffsetHandle(baseHandle);
  if (parentHandle)
      *parentHandle = parentH.ref;
  for (int i = 0; i < numReactors; ++i)
      buf->getOffsetHandle(baseHandle);
  if (xDictFlag != 1)
      buf->getOffsetHandle(baseHandle);
194}

196bool readTableValueBytes(dwgBuffer *buf, std::vector<std::uint8_t>& raw, const char *label) {
  const std::uint32_t byteCount = buf->getBitLong();
  if (byteCount > kMaxTableStringBytes) {
      DRW_DBG(label)DRW_dbg::dbg(label); DRW_DBG(" too large: ")DRW_dbg::dbg(" too large: "); DRW_DBG(byteCount)DRW_dbg::dbg(byteCount); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return false;
  }
  raw.resize(byteCount);
  const bool good = byteCount == 0 || buf->getBytes(raw.data(), raw.size());
  if (!good) {
      DRW_DBG(label)DRW_dbg::dbg(label); DRW_DBG(" byte payload read failed, size: ")DRW_dbg::dbg(" byte payload read failed, size: "); DRW_DBG(byteCount)DRW_dbg::dbg(byteCount);
      DRW_DBG(" remaining: ")DRW_dbg::dbg(" remaining: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  return good;
209}

211UTF8STRINGstd::string decodeTableValueText(DRW::Version version, dwgBuffer *buf, const std::vector<std::uint8_t>& raw) {
  if (raw.empty())
      return UTF8STRINGstd::string();
  std::string s(reinterpret_cast<const char*>(raw.data()), raw.size());
  if (version > DRW::AC1018 && s.size() >= 2 && s[s.size() - 1] == '\0'
      && s[s.size() - 2] == '\0') {
      s.resize(s.size() - 2);
  } else {
      while (!s.empty() && s.back() == '\0')
          s.pop_back();
  }
  if (buf->decoder)
      s = buf->decoder->toUtf8(s);
  return s;
225}

227UTF8STRINGstd::string readTableText(DRW::Version version, dwgBuffer *buf) {
  if (!buf)
      return UTF8STRINGstd::string();
  if (version <= DRW::AC1018)
      return buf->getVariableText(version, false);

  const std::uint32_t byteLen = buf->getBitShort();
  if (byteLen == 0)
      return UTF8STRINGstd::string();
  if (byteLen > kMaxTableStringBytes) {
      DRW_DBG("TABLE text byte length invalid: ")DRW_dbg::dbg("TABLE text byte length invalid: "); DRW_DBG(byteLen)DRW_dbg::dbg(byteLen); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return UTF8STRINGstd::string();
  }

  std::vector<std::uint8_t> raw(static_cast<size_t>(byteLen) + 2, 0);
  if (!buf->getBytes(raw.data(), byteLen))
      return UTF8STRINGstd::string();

  std::string s(reinterpret_cast<const char*>(raw.data()), byteLen);
  if (buf->decoder)
      s = buf->decoder->toUtf8(s);
  return s;
249}

251bool readTableValuePoint(dwgBuffer *buf, DRW_CadValue& value, int dimensions) {
  value.m_dataSize = static_cast<std::uint32_t>(buf->getBitLong());
  const std::uint32_t expectedSize = static_cast<std::uint32_t>(dimensions) * 8;
  if (value.m_dataSize > kMaxTableStringBytes)
      return false;
  if (value.m_dataSize < expectedSize) {
      value.m_rawData.resize(value.m_dataSize);
      if (value.m_dataSize > 0 && !buf->getBytes(value.m_rawData.data(), value.m_rawData.size()))
          return false;
      value.m_value.addBinary(310, value.m_rawData);
      return true;
  }

  DRW_Coord c;
  c.x = buf->getRawDouble();
  c.y = buf->getRawDouble();
  c.z = dimensions == 3 ? buf->getRawDouble() : 0.0;
  value.m_value.addCoord(11, c);

  const std::uint32_t extraBytes = value.m_dataSize - expectedSize;
  value.m_rawData.resize(extraBytes);
  return extraBytes == 0 || buf->getBytes(value.m_rawData.data(), value.m_rawData.size());
273}

275bool readTableCadValue(DRW::Version version, dwgBuffer *buf, dwgBuffer *strBuf,
                     dwgBuffer *hdlBuf, DRW_CadValue& value) {
  if (version > DRW::AC1018)
      value.m_formatFlags = buf->getBitLong();

  value.m_dataType = buf->getBitLong();
  const bool emptyR2007Value = version > DRW::AC1018 && (value.m_formatFlags & 3);
  if (!emptyR2007Value) {
      switch (value.m_dataType) {
      case 0:
      case 1:
          value.m_value.addInt(91, buf->getBitLong());
          break;
      case 2:
          value.m_value.addDouble(140, buf->getBitDouble());
          break;
      case 4:
      case 512:
          if (!readTableValueBytes(buf, value.m_rawData, "TABLE value byte payload"))
              return false;
          value.m_dataSize = static_cast<std::uint32_t>(value.m_rawData.size());
          value.m_value.addString(1, decodeTableValueText(version, buf, value.m_rawData));
          break;
      case 8: {
          if (!readTableValueBytes(buf, value.m_rawData, "TABLE value date payload"))
              return false;
          value.m_dataSize = static_cast<std::uint32_t>(value.m_rawData.size());
          value.m_value.addBinary(310, value.m_rawData);
          break;
      }
      case 16:
          if (!readTableValuePoint(buf, value, 2))
              return false;
          break;
      case 32:
          if (!readTableValuePoint(buf, value, 3))
              return false;
          break;
      case 64:
          value.m_handle = readTableHandle(hdlBuf);
          value.m_value.addInt(330, static_cast<std::uint32_t>(value.m_handle));
          break;
      case 128:
      case 256:
          DRW_DBG("unsupported TABLE CadValue buffer data type: ")DRW_dbg::dbg("unsupported TABLE CadValue buffer data type: "); DRW_DBG(value.m_dataType)DRW_dbg::dbg(value.m_dataType); DRW_DBG("\n")DRW_dbg::dbg("\n");
          return false;
      default:
          DRW_DBG("unsupported TABLE CadValue data type: ")DRW_dbg::dbg("unsupported TABLE CadValue data type: "); DRW_DBG(value.m_dataType)DRW_dbg::dbg(value.m_dataType); DRW_DBG("\n")DRW_dbg::dbg("\n");
          return false;
      }
  }

  if (version > DRW::AC1018) {
      dwgBuffer *textBuf = strBuf ? strBuf : buf;
      value.m_unitType = buf->getBitLong();
      value.m_formatString = readTableText(version, textBuf);
      value.m_valueString = readTableText(version, textBuf);
  }

  const bool good = buf->isGood() && (!strBuf || strBuf->isGood()) && (!hdlBuf || hdlBuf->isGood());
  if (!good) {
      DRW_DBG("TABLE CadValue stream failed, flags: ")DRW_dbg::dbg("TABLE CadValue stream failed, flags: "); DRW_DBG(value.m_formatFlags)DRW_dbg::dbg(value.m_formatFlags);
      DRW_DBG(" type: ")DRW_dbg::dbg(" type: "); DRW_DBG(value.m_dataType)DRW_dbg::dbg(value.m_dataType);
      DRW_DBG(" unit: ")DRW_dbg::dbg(" unit: "); DRW_DBG(value.m_unitType)DRW_dbg::dbg(value.m_unitType);
      DRW_DBG(" bufGood: ")DRW_dbg::dbg(" bufGood: "); DRW_DBG(buf->isGood() ? 1 : 0)DRW_dbg::dbg(buf->isGood() ? 1 : 0);
      DRW_DBG(" strGood: ")DRW_dbg::dbg(" strGood: "); DRW_DBG((!strBuf || strBuf->isGood()) ? 1 : 0)DRW_dbg::dbg((!strBuf || strBuf->isGood()) ? 1 : 0);
      DRW_DBG(" hdlGood: ")DRW_dbg::dbg(" hdlGood: "); DRW_DBG((!hdlBuf || hdlBuf->isGood()) ? 1 : 0)DRW_dbg::dbg((!hdlBuf || hdlBuf->isGood()) ? 1 : 0);
      DRW_DBG(" bufPos: ")DRW_dbg::dbg(" bufPos: "); DRW_DBG(buf->getPosition())DRW_dbg::dbg(buf->getPosition());
      DRW_DBG(" strPos: ")DRW_dbg::dbg(" strPos: "); if (strBuf) DRW_DBG(strBuf->getPosition())DRW_dbg::dbg(strBuf->getPosition()); else DRW_DBG(-1)DRW_dbg::dbg(-1);
      DRW_DBG(" hdlPos: ")DRW_dbg::dbg(" hdlPos: "); if (hdlBuf) DRW_DBG(hdlBuf->getPosition())DRW_dbg::dbg(hdlBuf->getPosition()); else DRW_DBG(-1)DRW_dbg::dbg(-1);
      DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  return good;
348}

350bool skipTableCustomData(DRW::Version version, dwgBuffer *buf,
                       dwgBuffer *strBuf, dwgBuffer *hdlBuf) {
  dwgBuffer *textBuf = strBuf ? strBuf : buf;
  UTF8STRINGstd::string key = readTableText(version, textBuf);
  if (strBuf && !strBuf->isGood()) {
      DRW_DBG("TABLE custom data key string read failed\n")DRW_dbg::dbg("TABLE custom data key string read failed\n");
      return false;
  }
  DRW_CadValue value;
  const bool good = readTableCadValue(version, buf, strBuf, hdlBuf, value);
  if (!good) {
      DRW_DBG("TABLE custom data key failed: ")DRW_dbg::dbg("TABLE custom data key failed: "); DRW_DBG(key.c_str())DRW_dbg::dbg(key.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  return good;
364}

366void readTableCmColor(DRW::Version version, dwgBuffer *buf, dwgBuffer *strBuf) {
  dwgBuffer *textBuf = strBuf ? strBuf : buf;
  if (version < DRW::AC1018) {
      buf->getSBitShort();
      return;
  }

  buf->getBitShort();
  const std::uint32_t rgb = buf->getBitLong();
  const std::uint8_t colorFlags = buf->getRawChar8();
  DRW_DBG("\ntype COLOR: ")DRW_dbg::dbg("\ntype COLOR: "); DRW_DBGH(rgb >> 24)DRW_dbg::dbgH(rgb >> 24);
  DRW_DBG("\nRGB COLOR: ")DRW_dbg::dbg("\nRGB COLOR: "); DRW_DBGH(rgb)DRW_dbg::dbgH(rgb);
  DRW_DBG("\nbyte COLOR: ")DRW_dbg::dbg("\nbyte COLOR: "); DRW_DBGH(colorFlags)DRW_dbg::dbgH(colorFlags);
  if (colorFlags & 1)
      readTableText(version, textBuf);
  if (colorFlags & 2)
      readTableText(version, textBuf);
383}

385bool skipR2007TableCellOverrides(DRW::Version version, dwgBuffer *buf,
                               dwgBuffer *strBuf, dwgBuffer *hdlBuf,
                               DRW_TableCell& cell,
                               std::vector<DRW_DwgSubrecordRange> *ranges) {
  const std::uint64_t startBit = currentDwgBit(buf);
  cell.m_overrideFlags = static_cast<std::uint32_t>(buf->getBitLong());
  cell.m_virtualEdgeFlags = buf->getRawChar8();

  if (cell.m_overrideFlags & 0x00001)
      buf->getRawShort16();
  if (cell.m_overrideFlags & 0x00002)
      buf->getBit();
  if (cell.m_overrideFlags & 0x00004)
      readTableCmColor(version, buf, strBuf);
  if (cell.m_overrideFlags & 0x00008)
      readTableCmColor(version, buf, strBuf);
  if (cell.m_overrideFlags & 0x00010)
      cell.m_textStyleOverrideHandle = readTableHandle(hdlBuf);
  if (cell.m_overrideFlags & 0x00020)
      buf->getBitDouble();
  if (cell.m_overrideFlags & 0x00040)
      readTableCmColor(version, buf, strBuf);
  if (cell.m_overrideFlags & 0x00400)
      buf->getBitShort();
  if (cell.m_overrideFlags & 0x04000)
      buf->getBitShort();
  if (cell.m_overrideFlags & 0x00080)
      readTableCmColor(version, buf, strBuf);
  if (cell.m_overrideFlags & 0x00800)
      buf->getBitShort();
  if (cell.m_overrideFlags & 0x08000)
      buf->getBitShort();
  if (cell.m_overrideFlags & 0x00100)
      readTableCmColor(version, buf, strBuf);
  if (cell.m_overrideFlags & 0x01000)
      buf->getBitShort();
  if (cell.m_overrideFlags & 0x10000)
      buf->getBitShort();
  if (cell.m_overrideFlags & 0x00200)
      readTableCmColor(version, buf, strBuf);
  if (cell.m_overrideFlags & 0x02000)
      buf->getBitShort();
  if (cell.m_overrideFlags & 0x20000)
      buf->getBitShort();

  const bool good = buf->isGood() && (!strBuf || strBuf->isGood()) && (!hdlBuf || hdlBuf->isGood());
  if (ranges != nullptr) {
      ranges->push_back(makeDwgSubrecordRange(
          "r2007-table-cell-overrides", startBit, currentDwgBit(buf),
          version, cell.m_overrideFlags, good));
  }
  return good;
437}

439bool parseR2007TableCell(DRW::Version version, dwgBuffer *buf, dwgBuffer *strBuf,
                       dwgBuffer *hdlBuf, DRW_TableCell& cell,
                       std::vector<DRW_DwgSubrecordRange> *ranges) {
  dwgBuffer *textBuf = strBuf ? strBuf : buf;
  cell.m_type = buf->getBitShort();
  cell.m_edgeFlags = buf->getRawChar8();
  cell.m_isMerged = buf->getBit() != 0;
  cell.m_autoFit = buf->getBit() != 0;
  cell.m_mergedWidth = buf->getBitLong();
  cell.m_mergedHeight = buf->getBitLong();
  cell.m_rotation = buf->getBitDouble();
  cell.m_valueHandle = readTableHandle(hdlBuf);

  if (cell.m_type == 1) {
      cell.m_textStyleHandle = cell.m_valueHandle;
      if (cell.m_textStyleHandle == 0 && version < DRW::AC1021) {
          DRW_TableCellContent content;
          content.m_type = 1;
          content.m_text = readTableText(version, textBuf);
          content.m_value.m_dataType = 4;
          content.m_value.m_value.addString(1, content.m_text);
          cell.m_contents.push_back(content);
      }
  } else if (cell.m_type == 2) {
      cell.m_blockHandle = cell.m_valueHandle;
      cell.m_blockScale = buf->getBitDouble();
      if (buf->getBit() != 0) {
          const std::uint16_t numAttributes = buf->getBitShort();
          cell.m_attributes.reserve(numAttributes);
          for (std::uint16_t i = 0; i < numAttributes; ++i) {
              DRW_TableCellAttribute attribute;
              attribute.m_attdefHandle = readTableHandle(hdlBuf);
              attribute.m_index = buf->getBitShort();
              attribute.m_text = readTableText(version, textBuf);
              cell.m_attributes.push_back(attribute);
          }
      }

      DRW_TableCellContent content;
      content.m_type = 4;
      content.m_handle = cell.m_blockHandle;
      cell.m_contents.push_back(content);
  }

  if (buf->getBit() != 0
      && !skipR2007TableCellOverrides(version, buf, strBuf, hdlBuf, cell, ranges))
      return false;

  if (version > DRW::AC1018) {
      buf->getBitLong();
      DRW_TableCellContent content;
      content.m_type = 1;
      if (!readTableCadValue(version, buf, strBuf, hdlBuf, content.m_value))
          return false;
      if (content.m_value.m_value.type() == DRW_Variant::STRING)
          content.m_text = content.m_value.m_value.c_str();
      else if (!content.m_value.m_valueString.empty())
          content.m_text = content.m_value.m_valueString;
      cell.m_contents.push_back(content);
  }

  return buf->isGood() && (!strBuf || strBuf->isGood()) && (!hdlBuf || hdlBuf->isGood());
501}

503bool skipR2007TableOverrides(DRW::Version version, dwgBuffer *buf,
                           dwgBuffer *strBuf, dwgBuffer *hdlBuf,
                           std::vector<DRW_DwgSubrecordRange> *ranges = nullptr) {
  const std::uint64_t startBit = currentDwgBit(buf);
  std::uint32_t maskCount = 0;
  if (buf->getBit() != 0) {
      const std::uint32_t flags = static_cast<std::uint32_t>(buf->getBitLong());
      ++maskCount;
      if (flags & 0x000001)
          buf->getBit();
      if (flags & 0x000004)
          buf->getBitShort();
      if (flags & 0x000008)
          buf->getBitDouble();
      if (flags & 0x000010)
          buf->getBitDouble();
      if (flags & 0x000020)
          readTableCmColor(version, buf, strBuf);
      if (flags & 0x000040)
          readTableCmColor(version, buf, strBuf);
      if (flags & 0x000080)
          readTableCmColor(version, buf, strBuf);
      if (flags & 0x000100)
          buf->getBit();
      if (flags & 0x000200)
          buf->getBit();
      if (flags & 0x000400)
          buf->getBit();
      if (flags & 0x000800)
          readTableCmColor(version, buf, strBuf);
      if (flags & 0x001000)
          readTableCmColor(version, buf, strBuf);
      if (flags & 0x002000)
          readTableCmColor(version, buf, strBuf);
      if (flags & 0x004000)
          buf->getBitShort();
      if (flags & 0x008000)
          buf->getBitShort();
      if (flags & 0x010000)
          buf->getBitShort();
      if (flags & 0x020000)
          readTableHandle(hdlBuf);
      if (flags & 0x040000)
          readTableHandle(hdlBuf);
      if (flags & 0x080000)
          readTableHandle(hdlBuf);
      if (flags & 0x100000)
          buf->getBitDouble();
      if (flags & 0x200000)
          buf->getBitDouble();
      if (flags & 0x400000)
          buf->getBitDouble();
  }

  if (buf->getBit() != 0) {
      const std::uint32_t flags = static_cast<std::uint32_t>(buf->getBitLong());
      ++maskCount;
      for (int i = 0; i < 18; ++i) {
          if (flags & (1u << i))
              readTableCmColor(version, buf, strBuf);
      }
  }

  if (buf->getBit() != 0) {
      const std::uint32_t flags = static_cast<std::uint32_t>(buf->getBitLong());
      ++maskCount;
      for (int i = 0; i < 18; ++i) {
          if (flags & (1u << i))
              buf->getBitShort();
      }
  }

  if (buf->getBit() != 0) {
      const std::uint32_t flags = static_cast<std::uint32_t>(buf->getBitLong());
      ++maskCount;
      for (int i = 0; i < 18; ++i) {
          if (flags & (1u << i))
              buf->getBitShort();
      }
  }

  const bool good = buf->isGood() && (!strBuf || strBuf->isGood()) && (!hdlBuf || hdlBuf->isGood());
  if (ranges != nullptr && (maskCount != 0 || currentDwgBit(buf) != startBit)) {
      ranges->push_back(makeDwgSubrecordRange(
          "r2007-table-overrides", startBit, currentDwgBit(buf),
          version, maskCount, good));
  }
  return good;
591}

593bool skipTableContentFormat(DRW::Version version, dwgBuffer *buf,
                          dwgBuffer *strBuf, dwgBuffer *hdlBuf,
                          std::vector<DRW_DwgSubrecordRange> *ranges = nullptr) {
  const std::uint64_t startBit = currentDwgBit(buf);
  dwgBuffer *textBuf = strBuf ? strBuf : buf;
  buf->getBitLong();  // property override flags
  buf->getBitLong();  // property flags
  buf->getBitLong();  // value data type
  buf->getBitLong();  // value unit type
  readTableText(version, textBuf);
  buf->getBitDouble(); // rotation
  buf->getBitDouble(); // block scale
  buf->getBitLong();   // alignment
  std::int32_t rgb = -1;
  UTF8STRINGstd::string name;
  UTF8STRINGstd::string book;
  buf->getCmColor(version, &rgb, textBuf, &name, &book);
  readTableHandle(hdlBuf); // text style
  buf->getBitDouble(); // text height
  const bool good = buf->isGood() && (!strBuf || strBuf->isGood()) && (!hdlBuf || hdlBuf->isGood());
  if (ranges != nullptr) {
      ranges->push_back(makeDwgSubrecordRange(
          "table-content-format", startBit, currentDwgBit(buf),
          version, 1, good));
  }
  return good;
619}

621bool skipTableCellStyle(DRW::Version version, dwgBuffer *buf,
                      dwgBuffer *strBuf, dwgBuffer *hdlBuf,
                      std::vector<DRW_DwgSubrecordRange> *ranges = nullptr) {
  const std::uint64_t startBit = currentDwgBit(buf);
  buf->getBitLong(); // style type
  const bool hasData = buf->getBitShort() != 0;
  if (!hasData) {
      if (ranges != nullptr) {
          ranges->push_back(makeDwgSubrecordRange(
              "table-cell-style", startBit, currentDwgBit(buf),
              version, 0, buf->isGood()));
      }
      return buf->isGood();
  }

  buf->getBitLong(); // property override flags
  buf->getBitLong(); // merge flags
  std::int32_t rgb = -1;
  UTF8STRINGstd::string name;
  UTF8STRINGstd::string book;
  dwgBuffer *textBuf = strBuf ? strBuf : buf;
  buf->getCmColor(version, &rgb, textBuf, &name, &book);
  buf->getBitLong(); // content layout
  if (!skipTableContentFormat(version, buf, strBuf, hdlBuf, ranges))
      return false;

  const std::uint16_t marginFlags = buf->getBitShort();
  if (marginFlags != 0) {
      for (int i = 0; i < 6; ++i)
          buf->getBitDouble();
  }

  const std::uint32_t borders = buf->getBitLong();
  if (borders > 6) {
      DRW_DBG("TABLE cell style border count out of range: ")DRW_dbg::dbg("TABLE cell style border count out of range: "); DRW_DBG(borders)DRW_dbg::dbg(borders); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return false;
  }
  for (std::uint32_t i = 0; i < borders; ++i) {
      const std::uint32_t edgeFlags = buf->getBitLong();
      if (edgeFlags == 0)
          continue;
      buf->getBitLong(); // border overrides
      buf->getBitLong(); // border type
      buf->getCmColor(version, &rgb, textBuf, &name, &book);
      buf->getBitLong(); // line weight
      readTableHandle(hdlBuf); // linetype
      buf->getBitLong(); // visible/invisible
      buf->getBitDouble(); // double line spacing
  }

  const bool good = buf->isGood() && (!strBuf || strBuf->isGood()) && (!hdlBuf || hdlBuf->isGood());
  if (ranges != nullptr) {
      ranges->push_back(makeDwgSubrecordRange(
          "table-cell-style", startBit, currentDwgBit(buf),
          version, borders, good));
  }
  return good;
678}

680bool parseTableCell(DRW::Version version, dwgBuffer *buf, dwgBuffer *strBuf,
                  dwgBuffer *hdlBuf, DRW_TableCell& cell,
                  std::vector<DRW_DwgSubrecordRange> *ranges) {
  dwgBuffer *textBuf = strBuf ? strBuf : buf;
  cell.m_flags = buf->getBitLong();
  cell.m_toolTip = readTableText(version, textBuf);
  if (strBuf && !strBuf->isGood()) {
      DRW_DBG("TABLE cell tooltip string read failed\n")DRW_dbg::dbg("TABLE cell tooltip string read failed\n");
      return false;
  }
  buf->getBitLong(); // custom data

  const std::uint32_t customItems = buf->getBitLong();
  if (customItems > kMaxTableItems) {
      DRW_DBG("TABLE cell custom item count out of range: ")DRW_dbg::dbg("TABLE cell custom item count out of range: "); DRW_DBG(customItems)DRW_dbg::dbg(customItems); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return false;
  }
  for (std::uint32_t i = 0; i < customItems; ++i) {
      if (!skipTableCustomData(version, buf, strBuf, hdlBuf)) {
          DRW_DBG("TABLE cell custom data parse incomplete\n")DRW_dbg::dbg("TABLE cell custom data parse incomplete\n");
          return false;
      }
  }

  if (buf->getBitLong() != 0) {
      readTableHandle(hdlBuf);
      buf->getBitLong();
      buf->getBitLong();
      buf->getBitLong();
  }

  const std::uint32_t contentCount = buf->getBitLong();
  if (contentCount > kMaxTableItems) {
      DRW_DBG("TABLE cell content count out of range: ")DRW_dbg::dbg("TABLE cell content count out of range: "); DRW_DBG(contentCount)DRW_dbg::dbg(contentCount); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return false;
  }
  cell.m_contents.reserve(contentCount);
  for (std::uint32_t i = 0; i < contentCount; ++i) {
      DRW_TableCellContent content;
      content.m_type = buf->getBitLong();
      if (content.m_type == 1) {
          if (!readTableCadValue(version, buf, strBuf, hdlBuf, content.m_value)) {
              DRW_DBG("TABLE cell value parse incomplete\n")DRW_dbg::dbg("TABLE cell value parse incomplete\n");
              return false;
          }
          if (content.m_value.m_value.type() == DRW_Variant::STRING)
              content.m_text = content.m_value.m_value.c_str();
          else if (!content.m_value.m_valueString.empty())
              content.m_text = content.m_value.m_valueString;
      } else if (content.m_type == 2 || content.m_type == 4) {
          content.m_handle = readTableHandle(hdlBuf);
      }

      const std::uint32_t numAttrs = buf->getBitLong();
      if (numAttrs > kMaxTableItems) {
          DRW_DBG("TABLE cell attribute count out of range: ")DRW_dbg::dbg("TABLE cell attribute count out of range: "); DRW_DBG(numAttrs)DRW_dbg::dbg(numAttrs); DRW_DBG("\n")DRW_dbg::dbg("\n");
          return false;
      }
      for (std::uint32_t attr = 0; attr < numAttrs; ++attr) {
          readTableHandle(hdlBuf);
          readTableText(version, textBuf);
          buf->getBitLong();
      }

      const bool hasContentFormat = buf->getBitShort() != 0;
      if (hasContentFormat
          && !skipTableContentFormat(version, buf, strBuf, hdlBuf, ranges)) {
          DRW_DBG("TABLE cell content format parse incomplete\n")DRW_dbg::dbg("TABLE cell content format parse incomplete\n");
          return false;
      }
      cell.m_contents.push_back(content);
  }

  if (!skipTableCellStyle(version, buf, strBuf, hdlBuf, ranges)) {
      DRW_DBG("TABLE cell style override parse incomplete\n")DRW_dbg::dbg("TABLE cell style override parse incomplete\n");
      return false;
  }

  cell.m_styleId = buf->getBitLong();
  const std::uint64_t geometryStartBit = currentDwgBit(buf);
  const std::uint32_t hasGeometry = buf->getBitLong();
  if (hasGeometry != 0) {
      buf->getBitLong(); // unknown AC1027+ geometry marker
      cell.m_width = buf->getBitDouble();
      cell.m_height = buf->getBitDouble();
      cell.m_geometryFlags = buf->getBitLong();
      cell.m_geometryHandle = readTableHandle(hdlBuf);
      if (cell.m_geometryFlags != 0) {
          cell.m_geometryTopLeft = buf->get3BitDouble();
          cell.m_geometryCenter = buf->get3BitDouble();
          cell.m_contentWidth = buf->getBitDouble();
          cell.m_contentHeight = buf->getBitDouble();
          cell.m_geometryWidth = buf->getBitDouble();
          cell.m_geometryHeight = buf->getBitDouble();
          cell.m_geometryRecordFlags = buf->getBitLong();
      }
      if (ranges != nullptr) {
          const bool geometryGood = buf->isGood() && (!hdlBuf || hdlBuf->isGood());
          ranges->push_back(makeDwgSubrecordRange(
              "table-cell-geometry-tail", geometryStartBit, currentDwgBit(buf),
              version, cell.m_geometryFlags, geometryGood));
      }
  }

  const bool good = buf->isGood() && (!strBuf || strBuf->isGood()) && (!hdlBuf || hdlBuf->isGood());
  if (!good)
      DRW_DBG("TABLE cell stream ended unexpectedly\n")DRW_dbg::dbg("TABLE cell stream ended unexpectedly\n");
  return good;
788}

790bool parseTableContent(DRW::Version version, dwgBuffer *buf, dwgBuffer *strBuf,
                     dwgBuffer *hdlBuf, DRW_TableContent& content) {
  dwgBuffer *textBuf = strBuf ? strBuf : buf;
  content.m_name = readTableText(version, textBuf);
  content.m_description = readTableText(version, textBuf);

  const std::uint32_t columns = buf->getBitLong();
  if (columns > kMaxTableColumns) {
      DRW_DBG("TABLECONTENT column count out of range: ")DRW_dbg::dbg("TABLECONTENT column count out of range: "); DRW_DBG(columns)DRW_dbg::dbg(columns); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return false;
  }
  content.m_columns.clear();
  content.m_columns.reserve(columns);
  for (std::uint32_t col = 0; col < columns; ++col) {
      DRW_TableColumn column;
      column.m_name = readTableText(version, textBuf);
      buf->getBitLong(); // custom data
      const std::uint32_t customItems = buf->getBitLong();
      if (customItems > kMaxTableItems) {
          DRW_DBG("TABLECONTENT column custom item count out of range: ")DRW_dbg::dbg("TABLECONTENT column custom item count out of range: "
); DRW_DBG(customItems)DRW_dbg::dbg(customItems); DRW_DBG("\n")DRW_dbg::dbg("\n");
          return false;
      }
      for (std::uint32_t i = 0; i < customItems; ++i) {
          if (!skipTableCustomData(version, buf, strBuf, hdlBuf)) {
              DRW_DBG("TABLECONTENT column custom data parse incomplete\n")DRW_dbg::dbg("TABLECONTENT column custom data parse incomplete\n"
);
              return false;
          }
      }
      if (!skipTableCellStyle(version, buf, strBuf, hdlBuf,
                              &content.m_subrecordRanges)) {
          DRW_DBG("TABLECONTENT column cell style parse incomplete\n")DRW_dbg::dbg("TABLECONTENT column cell style parse incomplete\n"
);
          return false;
      }
      buf->getBitLong(); // style id
      column.m_width = buf->getBitDouble();
      content.m_columns.push_back(column);
  }

  const std::uint32_t rows = buf->getBitLong();
  if (rows > kMaxTableRows || (columns != 0 && rows > kMaxTableCells / columns)) {
      DRW_DBG("TABLECONTENT row count out of range: ")DRW_dbg::dbg("TABLECONTENT row count out of range: "); DRW_DBG(rows)DRW_dbg::dbg(rows); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return false;
  }
  content.m_rows.clear();
  content.m_rows.reserve(rows);
  for (std::uint32_t rowIndex = 0; rowIndex < rows; ++rowIndex) {
      DRW_TableRow row;
      const std::uint32_t cells = buf->getBitLong();
      if (cells > kMaxTableColumns || cells > kMaxTableItems) {
          DRW_DBG("TABLECONTENT row cell count out of range: ")DRW_dbg::dbg("TABLECONTENT row cell count out of range: "); DRW_DBG(cells)DRW_dbg::dbg(cells); DRW_DBG("\n")DRW_dbg::dbg("\n");
          return false;
      }
      row.m_cells.reserve(cells);
      for (std::uint32_t cellIndex = 0; cellIndex < cells; ++cellIndex) {
          DRW_TableCell cell;
          if (!parseTableCell(version, buf, strBuf, hdlBuf, cell,
                              &content.m_subrecordRanges)) {
              DRW_DBG("TABLECONTENT cell parse incomplete at row ")DRW_dbg::dbg("TABLECONTENT cell parse incomplete at row "); DRW_DBG(rowIndex)DRW_dbg::dbg(rowIndex);
              DRW_DBG(" cell ")DRW_dbg::dbg(" cell "); DRW_DBG(cellIndex)DRW_dbg::dbg(cellIndex); DRW_DBG("\n")DRW_dbg::dbg("\n");
              return false;
          }
          row.m_cells.push_back(cell);
      }

      buf->getBitLong(); // custom data
      const std::uint32_t customItems = buf->getBitLong();
      if (customItems > kMaxTableItems) {
          DRW_DBG("TABLECONTENT row custom item count out of range: ")DRW_dbg::dbg("TABLECONTENT row custom item count out of range: "
); DRW_DBG(customItems)DRW_dbg::dbg(customItems); DRW_DBG("\n")DRW_dbg::dbg("\n");
          return false;
      }
      for (std::uint32_t i = 0; i < customItems; ++i) {
          if (!skipTableCustomData(version, buf, strBuf, hdlBuf)) {
              DRW_DBG("TABLECONTENT row custom data parse incomplete\n")DRW_dbg::dbg("TABLECONTENT row custom data parse incomplete\n"
);
              return false;
          }
      }
      if (!skipTableCellStyle(version, buf, strBuf, hdlBuf,
                              &content.m_subrecordRanges)) {
          DRW_DBG("TABLECONTENT row cell style parse incomplete\n")DRW_dbg::dbg("TABLECONTENT row cell style parse incomplete\n"
);
          return false;
      }
      buf->getBitLong(); // style id
      row.m_height = buf->getBitDouble();
      content.m_rows.push_back(row);
  }

  const std::uint32_t fieldRefs = buf->getBitLong();
  if (fieldRefs > kMaxTableItems) {
      DRW_DBG("TABLECONTENT field reference count out of range: ")DRW_dbg::dbg("TABLECONTENT field reference count out of range: "
); DRW_DBG(fieldRefs)DRW_dbg::dbg(fieldRefs); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return false;
  }
  content.m_fieldHandles.clear();
  content.m_fieldHandles.reserve(fieldRefs);
  for (std::uint32_t i = 0; i < fieldRefs; ++i) {
      const std::uint32_t ref = readTableHandle(hdlBuf);
      if (ref != 0)
          content.m_fieldHandles.push_back(ref);
  }

  if (!skipTableCellStyle(version, buf, strBuf, hdlBuf,
                          &content.m_subrecordRanges)) {
      DRW_DBG("TABLECONTENT table cell style parse incomplete\n")DRW_dbg::dbg("TABLECONTENT table cell style parse incomplete\n"
);
      return false;
  }

  const std::uint32_t mergedRanges = buf->getBitLong();
  if (mergedRanges > kMaxTableItems) {
      DRW_DBG("TABLECONTENT merged range count out of range: ")DRW_dbg::dbg("TABLECONTENT merged range count out of range: "
); DRW_DBG(mergedRanges)DRW_dbg::dbg(mergedRanges); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return false;
  }
  content.m_mergedRanges.clear();
  content.m_mergedRanges.reserve(mergedRanges);
  for (std::uint32_t i = 0; i < mergedRanges; ++i) {
      DRW_TableMergedRange range;
      range.m_topRow = buf->getBitLong();
      range.m_leftColumn = buf->getBitLong();
      range.m_bottomRow = buf->getBitLong();
      range.m_rightColumn = buf->getBitLong();
      content.m_mergedRanges.push_back(range);
  }

  content.m_tableStyleHandle = readTableHandle(hdlBuf);
  const bool good = buf->isGood() && (!strBuf || strBuf->isGood()) && (!hdlBuf || hdlBuf->isGood());
  if (!good)
      DRW_DBG("TABLECONTENT stream ended unexpectedly\n")DRW_dbg::dbg("TABLECONTENT stream ended unexpectedly\n");
  return good;
916}

918} // namespace

920//! Calculate arbitrary axis
921/*!
922*   Calculate arbitrary axis for apply extrusions
923*  @author Rallaz
924*/
925void DRW_Entity::calculateAxis(DRW_Coord extPoint){
  //Follow the arbitrary DXF definitions for extrusion axes.
  if (fabs(extPoint.x) < 0.015625 && fabs(extPoint.y) < 0.015625) {
      //If we get here, implement Ax = Wy x N where Wy is [0,1,0] per the DXF spec.
      //The cross product works out to Wy.y*N.z-Wy.z*N.y, Wy.z*N.x-Wy.x*N.z, Wy.x*N.y-Wy.y*N.x
      //Factoring in the fixed values for Wy gives N.z,0,-N.x
      extAxisX.x = extPoint.z;
      extAxisX.y = 0;
      extAxisX.z = -extPoint.x;
  } else {
      //Otherwise, implement Ax = Wz x N where Wz is [0,0,1] per the DXF spec.
      //The cross product works out to Wz.y*N.z-Wz.z*N.y, Wz.z*N.x-Wz.x*N.z, Wz.x*N.y-Wz.y*N.x
      //Factoring in the fixed values for Wz gives -N.y,N.x,0.
      extAxisX.x = -extPoint.y;
      extAxisX.y = extPoint.x;
      extAxisX.z = 0;
  }

  extAxisX.unitize();

  //Ay = N x Ax
  extAxisY.x = (extPoint.y * extAxisX.z) - (extAxisX.y * extPoint.z);
  extAxisY.y = (extPoint.z * extAxisX.x) - (extAxisX.z * extPoint.x);
  extAxisY.z = (extPoint.x * extAxisX.y) - (extAxisX.x * extPoint.y);

  extAxisY.unitize();
951}

953//! Extrude a point using arbitrary axis
954/*!
955*   apply extrusion in a point using arbitrary axis (previous calculated)
956*  @author Rallaz
957*/
958void DRW_Entity::extrudePoint(DRW_Coord extPoint, DRW_Coord *point){
  double px, py, pz;
  px = (extAxisX.x*point->x)+(extAxisY.x*point->y)+(extPoint.x*point->z);
  py = (extAxisX.y*point->x)+(extAxisY.y*point->y)+(extPoint.y*point->z);
  pz = (extAxisX.z*point->x)+(extAxisY.z*point->y)+(extPoint.z*point->z);

  point->x = px;
  point->y = py;
  point->z = pz;
967}

969bool DRW_Entity::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case DRW::dxfCode::HANDLE:
      handle = reader->getHandleString();
      break;
  case DRW::dxfCode::OWNER_HANDLE:
      parentHandle = reader->getHandleString();
      break;
  case DRW::dxfCode::LAYER:
      layer = reader->getUtf8String();
      break;
  case 6:
      lineType = reader->getUtf8String();
      break;
  case DRW::dxfCode::COLOR:
      color = reader->getInt32();
      break;
  case DRW::dxfCode::LINEWEIGHT:
      lWeight = DRW_LW_Conv::dxfInt2lineWidth(reader->getInt32());
      break;
  case 48:
      ltypeScale = reader->getDouble();
      break;
  case DRW::dxfCode::INVISIBLE:
      visible = (reader->getInt32() & 1) == 0;
      break;
  case 420:
      color24 = reader->getInt32();
      break;
  case 430:
      colorName = reader->getString();
      break;
  case 67:
      space = static_cast<DRW::Space>(reader->getInt32());
      break;
  case 102:
      return parseDxfGroups(code, reader);
  case 284:
      shadow = static_cast<DRW::ShadowMode>(reader->getInt32() & 0x3);
      break;
  case 347:
      material = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  case DRW::dxfCode::PLOTSTYLE:
      plotStyle = reader->getHandleString();
      break;
  case 440:
      transparency = reader->getInt32();
      break;
  case 92:
  case 160:
      // Proxy entity graphics byte count (ODA §20.4.95): 92 for R13–R2007,
      // 160 for R2010+.  Introduces the 310 hex chunks below; gating the 310
      // capture on this keeps unrelated binary-310 streams out of the proxy
      // buffer.  (Entities that repurpose 92 — e.g. MESH — handle it in their
      // own parseCode and never reach here.)
      numProxyGraph = reader->getInt32();
      break;
  case 310:
      if (numProxyGraph != 0) {
          // Proxy graphics binary, hex-encoded across many ≤254-char chunks.
          const std::string& hex = reader->getString();
          proxyGraphics.reserve(proxyGraphics.size() + hex.size() / 2);
          auto hexVal = [](char c) -> int {
              if (c >= '0' && c <= '9') return c - '0';
              if (c >= 'a' && c <= 'f') return c - 'a' + 10;
              if (c >= 'A' && c <= 'F') return c - 'A' + 10;
              return -1;
          };
          for (std::size_t i = 0; i + 1 < hex.size(); i += 2) {
              int hi = hexVal(hex[i]), lo = hexVal(hex[i + 1]);
              if (hi < 0 || lo < 0) break;
              proxyGraphics.push_back(static_cast<char>((hi << 4) | lo));
          }
      }
      break;
  case 1000:
  case 1001:
  case 1002:
  case 1003:
  case 1004:
  case 1005:
extData.push_back(std::make_shared<DRW_Variant>(code, reader->getString()));
      break;
  case 1010:
  case 1011:
  case 1012:
  case 1013:
curr =std::make_shared<DRW_Variant>(code, DRW_Coord(reader->getDouble(), 0.0, 0.0));
      extData.push_back(curr);
      break;
  case 1020:
  case 1021:
  case 1022:
  case 1023:
      if (curr)
          curr->setCoordY(reader->getDouble());
      break;
  case 1030:
  case 1031:
  case 1032:
  case 1033:
      if (curr)
          curr->setCoordZ(reader->getDouble());
//FIXME, why do we discard curr right after setting the its Z
1074//        curr=NULL;
      break;
  case 1040:
  case 1041:
  case 1042:
extData.push_back(std::make_shared<DRW_Variant>(code, reader->getDouble() ));
      break;
  case 1070:
  case 1071:
extData.push_back(std::make_shared<DRW_Variant>(code, reader->getInt32() ));
      break;
  default:
      break;
  }
  return true;
1089}

1091//parses dxf 102 groups to read entity
1092bool DRW_Entity::parseDxfGroups(int code, const std::unique_ptr<dxfReader>& reader){
  std::list<DRW_Variant> ls;
  DRW_Variant curr;
  std::string appName= reader->getString();
  bool complete = true;
  if (!appName.empty() && appName.at(0)== '{') {
      curr.addString(code, appName.substr(1));
      ls.push_back(curr);
      int depth = 1;
      int nextCode = 0;
      while (depth > 0 && reader->readRec(&nextCode)) {
          DRW_Variant value;
          if (nextCode == 102) {
              std::string marker = reader->getString();
              value.addString(nextCode, marker);
              if (!marker.empty() && marker.at(0) == '{')
                  ++depth;
              else if (!marker.empty() && marker.at(0) == '}')
                  --depth;
          } else if ((nextCode >= 320 && nextCode <= 369)
                     || (nextCode >= 390 && nextCode <= 399)
                     || nextCode == 480 || nextCode == 481
                     || nextCode == 1005) {
              value.addString(nextCode, reader->getString());
          } else {
              switch (reader->type) {
              case dxfReader::STRING:
              case dxfReader::BINARY:
                  value.addString(nextCode, reader->getString());
                  break;
              case dxfReader::INT32:
              case dxfReader::BOOL:
                  value.addInt(nextCode, reader->getInt32());
                  break;
              case dxfReader::INT64:
                  value.addInt64(nextCode, static_cast<std::int64_t>(reader->getInt64()));
                  break;
              case dxfReader::DOUBLE:
                  value.addDouble(nextCode, reader->getDouble());
                  break;
              default:
                  break;
              }
          }
          ls.push_back(value);
      }
      complete = depth == 0;
  }

  appData.push_back(ls);
  return complete;
1143}

1145bool DRW_Entity::parseDwg(DRW::Version version, dwgBuffer *buf, dwgBuffer* strBuf, std::uint32_t bs){
  objSize=0;
  DRW_DBG("\n***************************** parsing entity *********************************************\n")DRW_dbg::dbg("\n***************************** parsing entity *********************************************\n"
);
  oType = buf->getObjType(version);
  DRW_DBG("Object type: ")DRW_dbg::dbg("Object type: "); DRW_DBG(oType)DRW_dbg::dbg(oType); DRW_DBG(", ")DRW_dbg::dbg(", "); DRW_DBGH(oType)DRW_dbg::dbgH(oType);

  if (version > DRW::AC1014 && version < DRW::AC1024) {//2000 & 2004
      objSize = buf->getRawLong32();  //RL 32bits object size in bits
      DRW_DBG(" Object size: ")DRW_dbg::dbg(" Object size: "); DRW_DBG(objSize)DRW_dbg::dbg(objSize); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (version > DRW::AC1021) {//2010+
      std::uint32_t ms = buf->size();
      // Clamp: a corrupt bs > ms*8 would underflow objSize (unsigned) to a
      // huge value and drive strBuf->moveBitPos(objSize-1) past the buffer.
      objSize = (bs <= ms*8u) ? ms*8u - bs : 0u;
      DRW_DBG(" Object size: ")DRW_dbg::dbg(" Object size: "); DRW_DBG(objSize)DRW_dbg::dbg(objSize); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }

  if (strBuf != NULL__null && version > DRW::AC1018) {//2007+
      strBuf->moveBitPos(objSize-1);
      DRW_DBG(" strBuf strbit pos 2007: ")DRW_dbg::dbg(" strBuf strbit pos 2007: "); DRW_DBG(strBuf->getPosition())DRW_dbg::dbg(strBuf->getPosition()); DRW_DBG(" strBuf bpos 2007: ")DRW_dbg::dbg(" strBuf bpos 2007: "); DRW_DBG(strBuf->getBitPos())DRW_dbg::dbg(strBuf->getBitPos()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      if (strBuf->getBit() == 1){
          DRW_DBG("DRW_TableEntry::parseDwg string bit is 1\n")DRW_dbg::dbg("DRW_TableEntry::parseDwg string bit is 1\n");
          strBuf->moveBitPos(-17);
          std::uint16_t strDataSize = strBuf->getRawShort16();
          DRW_DBG("\nDRW_TableEntry::parseDwg string strDataSize: ")DRW_dbg::dbg("\nDRW_TableEntry::parseDwg string strDataSize: "
); DRW_DBGH(strDataSize)DRW_dbg::dbgH(strDataSize); DRW_DBG("\n")DRW_dbg::dbg("\n");
          if ( (strDataSize& 0x8000) == 0x8000){
              DRW_DBG("\nDRW_TableEntry::parseDwg string 0x8000 bit is set")DRW_dbg::dbg("\nDRW_TableEntry::parseDwg string 0x8000 bit is set"
);
              strBuf->moveBitPos(-32);
              std::uint16_t hiSize = strBuf->getRawShort16();
              strDataSize = ((strDataSize&0x7fff) | (hiSize<<15));
          }
          strBuf->moveBitPos( -strDataSize -16); //-14
          DRW_DBG("strBuf start strDataSize pos 2007: ")DRW_dbg::dbg("strBuf start strDataSize pos 2007: "); DRW_DBG(strBuf->getPosition())DRW_dbg::dbg(strBuf->getPosition()); DRW_DBG(" strBuf bpos 2007: ")DRW_dbg::dbg(" strBuf bpos 2007: "); DRW_DBG(strBuf->getBitPos())DRW_dbg::dbg(strBuf->getBitPos()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      } else
          DRW_DBG("\nDRW_TableEntry::parseDwg string bit is 0")DRW_dbg::dbg("\nDRW_TableEntry::parseDwg string bit is 0");
      DRW_DBG("strBuf start pos 2007: ")DRW_dbg::dbg("strBuf start pos 2007: "); DRW_DBG(strBuf->getPosition())DRW_dbg::dbg(strBuf->getPosition()); DRW_DBG(" strBuf bpos 2007: ")DRW_dbg::dbg(" strBuf bpos 2007: "); DRW_DBG(strBuf->getBitPos())DRW_dbg::dbg(strBuf->getBitPos()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }

  dwgHandle ho = buf->getHandle();
  handle = ho.ref;
  DRW_DBG("Entity Handle: ")DRW_dbg::dbg("Entity Handle: "); DRW_DBGHL(ho.code, ho.size, ho.ref)DRW_dbg::dbgHL(ho.code, ho.size, ho.ref);
  // ODA DWG spec §28 "Extended Entity Data". The outer loop yields one
  // BS-prefixed byte chunk per APPID-attached group; size==0 terminates.
  // Each chunk's payload is a sequence of (1-byte type code + value)
  // items; we walk it with a nested loop and push DRW_Variant entries
  // into @ref extData. Handle-typed items (type 3 layer-ref, type 5
  // entity-ref) and the per-chunk APPID handle are resolved post-hoc
  // in dwgReader::parseAttribs once the symbol tables are available.
  std::uint16_t extDataSize = buf->getBitShort(); //BS (unsigned: a >32767 chunk size must not go negative)
  DRW_DBG(" ext data size: ")DRW_dbg::dbg(" ext data size: "); DRW_DBG(extDataSize)DRW_dbg::dbg(extDataSize);
  while (extDataSize>0 && buf->isGood()) {
      dwgHandle ah = buf->getHandle();
      DRW_DBG("App Handle: ")DRW_dbg::dbg("App Handle: "); DRW_DBGHL(ah.code, ah.size, ah.ref)DRW_dbg::dbgHL(ah.code, ah.size, ah.ref);
      std::vector<std::uint8_t> tmpExtData(static_cast<std::size_t>(extDataSize));
      if (!buf->getBytes(tmpExtData.data(), extDataSize))
          return false;
      dwgBuffer tmpExtDataBuf(tmpExtData.data(), extDataSize, buf->decoder);

      // Placeholder for the APPID name (DXF group 1001). Filled in by
      // parseAttribs from appIdmap; falls back to ACAD_<hex> if unknown.
      extData.push_back(std::make_shared<DRW_Variant>(1001, std::string{}));
      pendingAppIdResolutions.push_back({extData.size() - 1, ah.ref});

      while (tmpExtDataBuf.numRemainingBytes() > 0 && tmpExtDataBuf.isGood()) {
          std::uint8_t dxfCode = tmpExtDataBuf.getRawChar8();
          DRW_DBG(" eed type: ")DRW_dbg::dbg(" eed type: "); DRW_DBG(dxfCode)DRW_dbg::dbg(dxfCode);
          switch (dxfCode){
          case 0: { //string
              std::string s;
              if (version > DRW::AC1018) { //R2007+
                  if (tmpExtDataBuf.numRemainingBytes() < 2) break;
                  std::uint16_t nChars = tmpExtDataBuf.getRawShort16();
                  DRW_DBG(" EED string nChars: ")DRW_dbg::dbg(" EED string nChars: "); DRW_DBG(nChars)DRW_dbg::dbg(nChars);
                  if (nChars > 0) {
                      // R2007+ EED strings are UTF-16LE (nChars 16-bit code units).
                      std::uint64_t byteLen = static_cast<std::uint64_t>(nChars) * 2;
                      if ((std::uint64_t)tmpExtDataBuf.numRemainingBytes() < byteLen) break;
                      std::vector<std::uint8_t> bytes(byteLen);
                      tmpExtDataBuf.getBytes(bytes.data(), byteLen);
                      for (std::uint16_t i = 0; i < nChars; ++i) {
                          std::uint16_t c = static_cast<std::uint16_t>(bytes[2*i]) |
                                     (static_cast<std::uint16_t>(bytes[2*i+1]) << 8);
                          if (c < 0x80) {
                              s.push_back(static_cast<char>(c));
                          } else if (c < 0x800) {
                              s.push_back(static_cast<char>(0xC0 | (c >> 6)));
                              s.push_back(static_cast<char>(0x80 | (c & 0x3F)));
                          } else {
                              s.push_back(static_cast<char>(0xE0 | (c >> 12)));
                              s.push_back(static_cast<char>(0x80 | ((c >> 6) & 0x3F)));
                              s.push_back(static_cast<char>(0x80 | (c & 0x3F)));
                          }
                      }
                  }
              } else { //R13–R2004: 1-byte len + 2-byte BE codepage hint + bytes (+NUL)
                  if (tmpExtDataBuf.numRemainingBytes() < 3) break;
                  std::uint8_t strLength = tmpExtDataBuf.getRawChar8();
                  std::uint16_t cp = tmpExtDataBuf.getBERawShort16();
                  if (strLength > 0 && tmpExtDataBuf.numRemainingBytes() >= strLength) {
                      std::string raw(strLength, '\0');
                      tmpExtDataBuf.getBytes(reinterpret_cast<std::uint8_t*>(&raw[0]), strLength);
                      s = decodeEedString(cp, raw, tmpExtDataBuf.decoder);
                  }
                  //consume the optional trailing NUL terminator if present
                  if (tmpExtDataBuf.numRemainingBytes() > 0) {
                      tmpExtDataBuf.getRawChar8();
                  }
              }
              extData.push_back(std::make_shared<DRW_Variant>(1000, s));
              break;
          }
          case 2: { //control character: 0 = '{', 1 = '}'
              if (tmpExtDataBuf.numRemainingBytes() < 1) break;
              std::uint8_t ctrl = tmpExtDataBuf.getRawChar8();
              extData.push_back(std::make_shared<DRW_Variant>(
                  1002, std::string(ctrl == 0 ? "{" : "}")));
              break;
          }
          case 3: { //layer-table reference (8 raw BE bytes -> handle)
              if (tmpExtDataBuf.numRemainingBytes() < 8) break;
              std::uint8_t hb[8];
              tmpExtDataBuf.getBytes(hb, 8);
              std::uint64_t ref = 0;
              for (int i = 0; i < 8; ++i) {
                  ref = (ref << 8) | hb[i];
              }
              // Placeholder layer-ref string; resolved post-hoc.
              extData.push_back(std::make_shared<DRW_Variant>(
                  1003, std::string{}, /*isLayerRef=*/true));
              pendingLayerRefResolutions.push_back(
                  {extData.size() - 1, static_cast<std::uint32_t>(ref)});
              break;
          }
          case 4: { //binary chunk: 1-byte length + bytes
              if (tmpExtDataBuf.numRemainingBytes() < 1) break;
              std::uint8_t binLen = tmpExtDataBuf.getRawChar8();
              std::vector<std::uint8_t> bytes(binLen);
              if (binLen > 0 && tmpExtDataBuf.numRemainingBytes() >= binLen) {
                  tmpExtDataBuf.getBytes(bytes.data(), binLen);
              }
              extData.push_back(std::make_shared<DRW_Variant>(1004, std::move(bytes)));
              break;
          }
          case 5: { //entity-handle reference (8 raw BE bytes -> hex string)
              if (tmpExtDataBuf.numRemainingBytes() < 8) break;
              std::uint8_t hb[8];
              tmpExtDataBuf.getBytes(hb, 8);
              std::uint64_t ref = 0;
              for (int i = 0; i < 8; ++i) {
                  ref = (ref << 8) | hb[i];
              }
              char tmp[24];
              std::snprintf(tmp, sizeof(tmp), "%llX",
                            static_cast<unsigned long long>(ref));
              extData.push_back(std::make_shared<DRW_Variant>(1005, std::string{tmp}));
              break;
          }
          case 10: case 11: case 12: case 13: { //3-double point
              if (tmpExtDataBuf.numRemainingBytes() < 24) break;
              DRW_Coord c;
              c.x = tmpExtDataBuf.getRawDouble();
              c.y = tmpExtDataBuf.getRawDouble();
              c.z = tmpExtDataBuf.getRawDouble();
              extData.push_back(std::make_shared<DRW_Variant>(1000 + dxfCode, c));
              break;
          }
          case 40: case 41: case 42: { //real
              if (tmpExtDataBuf.numRemainingBytes() < 8) break;
              double d = tmpExtDataBuf.getRawDouble();
              extData.push_back(std::make_shared<DRW_Variant>(1000 + dxfCode, d));
              break;
          }
          case 70: { //int16
              if (tmpExtDataBuf.numRemainingBytes() < 2) break;
              std::int16_t i = static_cast<std::int16_t>(tmpExtDataBuf.getRawShort16());
              extData.push_back(std::make_shared<DRW_Variant>(1070, static_cast<std::int32_t>(i)));
              break;
          }
          case 71: { //int32
              if (tmpExtDataBuf.numRemainingBytes() < 4) break;
              std::int32_t i = static_cast<std::int32_t>(tmpExtDataBuf.getRawLong32());
              extData.push_back(std::make_shared<DRW_Variant>(1071, i));
              break;
          }
          default:
              DRW_DBG(" unknown EED type: ")DRW_dbg::dbg(" unknown EED type: "); DRW_DBG(dxfCode)DRW_dbg::dbg(dxfCode); DRW_DBG("\n")DRW_dbg::dbg("\n");
              // Unknown type — bail on this app's chunk; we cannot
              // know how many bytes the rest of the item occupies.
              tmpExtDataBuf.setPosition(tmpExtDataBuf.size());
              break;
          }
      }
      extDataSize = buf->getBitShort(); //BS
      DRW_DBG(" ext data size: ")DRW_dbg::dbg(" ext data size: "); DRW_DBG(extDataSize)DRW_dbg::dbg(extDataSize);
  } //end parsing extData (EED)
  DRW_DBG(" [bidi-debug pre-graphFlag bufpos=")DRW_dbg::dbg(" [bidi-debug pre-graphFlag bufpos="); DRW_DBG(buf->getPosition())DRW_dbg::dbg(buf->getPosition()); DRW_DBG(" bitpos=")DRW_dbg::dbg(" bitpos="); DRW_DBG(buf->getBitPos())DRW_dbg::dbg(buf->getBitPos()); DRW_DBG("]\n")DRW_dbg::dbg("]\n");
  std::uint8_t graphFlag = buf->getBit(); //B
  DRW_DBG(" graphFlag: ")DRW_dbg::dbg(" graphFlag: "); DRW_DBG(graphFlag)DRW_dbg::dbg(graphFlag); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (graphFlag) {
      DRW_DBG(" [bidi-debug pre-graphSize bufpos=")DRW_dbg::dbg(" [bidi-debug pre-graphSize bufpos="); DRW_DBG(buf->getPosition())DRW_dbg::dbg(buf->getPosition()); DRW_DBG(" bitpos=")DRW_dbg::dbg(" bitpos="); DRW_DBG(buf->getBitPos())DRW_dbg::dbg(buf->getBitPos()); DRW_DBG("]\n")DRW_dbg::dbg("]\n");
      const std::uint64_t graphDataSize = (version >= DRW::AC1024)
          ? buf->getBitLongLong()
          : buf->getRawLong32();
      DRW_DBG("graphData in bytes: ")DRW_dbg::dbg("graphData in bytes: "); DRW_DBG(static_cast<std::uint32_t>(graphDataSize))DRW_dbg::dbg(static_cast<std::uint32_t>(graphDataSize)); DRW_DBG("\n")DRW_dbg::dbg("\n");
      const std::uint64_t maxMoveBytes = static_cast<std::uint64_t>(std::numeric_limits<std::int32_t>::max() / 8);
      if (graphDataSize > static_cast<std::uint64_t>(buf->numRemainingBytes())
          || graphDataSize > maxMoveBytes) {
          DRW_DBG("graphData size outside object body\n")DRW_dbg::dbg("graphData size outside object body\n");
          return false;
      }
      // Capture the proxy-graphics byte stream instead of skipping it. These
      // are cached drawable primitives (lines/arcs/polylines/text) that any
      // reader can render for proxy/custom entities (STDPART2D, AEC_*, tables)
      // — previously discarded via moveBitPos, leaving proxyGraphics empty.
      // dwgBuffer::getBytes is bit-aware (reconstructs each byte at a non-zero
      // bitPos), so it lands at the exact same position moveBitPos(8N) did.
      // (write-review #32 / read-coverage gap #1)
      if (graphDataSize > 0) {
          proxyGraphics.resize(graphDataSize);
          if (!buf->getBytes(reinterpret_cast<std::uint8_t*>(&proxyGraphics[0]),
                             graphDataSize))
              return false;
          numProxyGraph = static_cast<int>(graphDataSize);
      }
  }
  if (version < DRW::AC1015) {//14-
      objSize = buf->getRawLong32();  //RL 32bits object size in bits
      DRW_DBG(" Object size in bits: ")DRW_dbg::dbg(" Object size in bits: "); DRW_DBG(objSize)DRW_dbg::dbg(objSize); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }

  std::uint8_t entmode = buf->get2Bits(); //BB
  if (entmode == 0)
      ownerHandle= true;
1379//        entmode = 2;
  else if(entmode ==2)
      entmode = 0;
  space = (DRW::Space)entmode; //RLZ verify cast values
  DRW_DBG("entmode: ")DRW_dbg::dbg("entmode: "); DRW_DBG(entmode)DRW_dbg::dbg(entmode);
  numReactors = buf->getBitLong(); //BL per spec §20.4.1
  DRW_DBG(", numReactors: ")DRW_dbg::dbg(", numReactors: "); DRW_DBG(numReactors)DRW_dbg::dbg(numReactors);

  if (version < DRW::AC1015) {//14-
      if(buf->getBit()) {//is bylayer line type
          lineType = "BYLAYER";
          ltFlags = 0;
      } else {
          lineType = "";
          ltFlags = 3;
      }
      DRW_DBG(" lineType: ")DRW_dbg::dbg(" lineType: "); DRW_DBG(lineType.c_str())DRW_dbg::dbg(lineType.c_str());
      DRW_DBG(" ltFlags: ")DRW_dbg::dbg(" ltFlags: "); DRW_DBG(ltFlags)DRW_dbg::dbg(ltFlags);
  }
  if (version > DRW::AC1015) {//2004+
      xDictFlag = buf->getBit();
      DRW_DBG(" xDictFlag: ")DRW_dbg::dbg(" xDictFlag: "); DRW_DBG(xDictFlag)DRW_dbg::dbg(xDictFlag); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }

  // libreDWG common_entity_data.spec — the bit at this stream position has two
  // disjoint meanings by version:
  //   * R13..R2002 (version < AC1018): `nolinks` (B). 1 = no prev/next handles
  //     in the handle section; 0 = read prev+next at parseDwgEntHandle.
  //   * R2004..R2010 (AC1018..AC1024): NO bit in the stream — reader forces
  //     haveNextLinks=1 to skip the prev/next handle reads.
  //   * R2013+ (version > AC1024): `has_ds_data` (B). 1 = inline ACIS SAB
  //     datastore present. Stored separately because it gates SAB handling,
  //     not prev/next links (which are already version<AC1018 gated).
  // Total bit consumption is unchanged for every version.
  if (version < DRW::AC1018) {
      haveNextLinks = buf->getBit(); //nolinks //B
      DRW_DBG(", haveNextLinks (0 yes, 1 prev next): ")DRW_dbg::dbg(", haveNextLinks (0 yes, 1 prev next): "); DRW_DBG(haveNextLinks)DRW_dbg::dbg(haveNextLinks); DRW_DBG("\n")DRW_dbg::dbg("\n");
  } else {
      haveNextLinks = 1; //AC1018+: not in stream, force 1 (no prev/next)
      DRW_DBG(", haveNextLinks (forced): ")DRW_dbg::dbg(", haveNextLinks (forced): "); DRW_DBG(haveNextLinks)DRW_dbg::dbg(haveNextLinks); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (version > DRW::AC1024) {
      hasDsData = buf->getBit(); //has_ds_data //B (R2013+)
      DRW_DBG(", hasDsData (R2013+): ")DRW_dbg::dbg(", hasDsData (R2013+): "); DRW_DBG(hasDsData)DRW_dbg::dbg(hasDsData); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
1424//ENC color
  color = buf->getEnColor(version); //BS or CMC //ok for R14 or negate
  // Capture the AcDbColor side-channel BEFORE any subsequent ENC read.
  // libreDWG common_entity_data.spec:454-459 — the corresponding handle
  // is consumed at the start of the handle stream in parseDwgEntHandle.
  hasAcDbColorH = buf->lastEnColorHadDbColorRef;
  // libreDWG common_entity_data.spec:432-453 — ENC alpha_raw (DXF code
  // 440) is encoded as (alpha_type<<24) | alpha. Stored verbatim; the
  // filter (RS_FilterDXFRW::setEntityAttributes) decodes alpha_type==3
  // into a per-entity pen alpha, otherwise inherits from layer/block.
  if (buf->lastEnColorAlphaRaw != 0) {
      transparency = static_cast<int>(buf->lastEnColorAlphaRaw);
  }
  // libreDWG common_entity_data.spec:468-475 — inline TV name/book name
  // (flags 0x41/0x42) override any dbColorMap-resolved name. Captured
  // immediately; entryParse will skip the override only if colorName is
  // already populated here.
  if (!buf->lastEnColorName.empty()) {
      colorName = buf->lastEnColorBookName.empty()
          ? buf->lastEnColorName
          : (buf->lastEnColorBookName + "$" + buf->lastEnColorName);
  }
  ltypeScale = buf->getBitDouble(); //BD
  DRW_DBG(" entity color: ")DRW_dbg::dbg(" entity color: "); DRW_DBG(color)DRW_dbg::dbg(color);
  DRW_DBG(" ltScale: ")DRW_dbg::dbg(" ltScale: "); DRW_DBG(ltypeScale)DRW_dbg::dbg(ltypeScale); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (version > DRW::AC1014) {//2000+ — §19.4.1: linetype-flags BB then plot-flags BB
      ltFlags = buf->get2Bits(); //BB
      if (ltFlags == 0)      lineType = "BYLAYER";
      else if (ltFlags == 1) lineType = "BYBLOCK";
      else if (ltFlags == 2) lineType = "CONTINUOUS";
      else                   lineType = ""; //3 → handle at end
      DRW_DBG("ltFlags: ")DRW_dbg::dbg("ltFlags: "); DRW_DBG(ltFlags)DRW_dbg::dbg(ltFlags);
      DRW_DBG(" lineType: ")DRW_dbg::dbg(" lineType: "); DRW_DBG(lineType.c_str())DRW_dbg::dbg(lineType.c_str());

      plotFlags = buf->get2Bits(); //BB
      DRW_DBG(", plotFlags: ")DRW_dbg::dbg(", plotFlags: "); DRW_DBG(plotFlags)DRW_dbg::dbg(plotFlags);
  }
  if (version > DRW::AC1018) {//2007+
      materialFlag = buf->get2Bits(); //BB
      DRW_DBG("materialFlag: ")DRW_dbg::dbg("materialFlag: "); DRW_DBG(materialFlag)DRW_dbg::dbg(materialFlag);
      shadowFlag = buf->getRawChar8(); //RC, low 2 bits is shadow mode 0..3
      DRW_DBG("shadowFlag: ")DRW_dbg::dbg("shadowFlag: "); DRW_DBG(shadowFlag)DRW_dbg::dbg(shadowFlag); DRW_DBG("\n")DRW_dbg::dbg("\n");
      shadow = static_cast<DRW::ShadowMode>(shadowFlag & 0x3);
  }
  if (version > DRW::AC1021) {//2010+ — §19.4.1: three single-bit flags
      // Ground-truth: libreDWG common_entity_data.spec lines 523-528
      // and ODA spec v5.4.1 §19.4.1 both define three FIELD_B (single bit)
      // flags here, one each for full/face/edge visual style. Total bit
      // consumption (3 bits) is identical to the historical BB+B shape;
      // only the semantics differ. The corresponding handles are read
      // conditionally in parseDwgEntHandle after the plotstyle handle.
      hasFullVisualStyle = buf->getBit(); //B
      hasFaceVisualStyle = buf->getBit(); //B
      hasEdgeVisualStyle = buf->getBit(); //B
      DRW_DBG("hasFull/Face/Edge VisualStyle: ")DRW_dbg::dbg("hasFull/Face/Edge VisualStyle: ");
      DRW_DBG(hasFullVisualStyle)DRW_dbg::dbg(hasFullVisualStyle); DRW_DBG(" ")DRW_dbg::dbg(" ");
      DRW_DBG(hasFaceVisualStyle)DRW_dbg::dbg(hasFaceVisualStyle); DRW_DBG(" ")DRW_dbg::dbg(" ");
      DRW_DBG(hasEdgeVisualStyle)DRW_dbg::dbg(hasEdgeVisualStyle); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  std::int16_t invisibleFlag = buf->getBitShort(); //BS
  DRW_DBG(" invisibleFlag: ")DRW_dbg::dbg(" invisibleFlag: "); DRW_DBG(invisibleFlag)DRW_dbg::dbg(invisibleFlag);
  // DXF group 60: bit 0 = invisible (1) / visible (0). libreDWG
  // common_entity_data.spec masks bit 0 only (`invisible & 1`) and ignores
  // the higher bits, so use the same mask rather than `== 0`. Paired with
  // the encode emit below.
  visible = ((invisibleFlag & 1) == 0);
  if (version > DRW::AC1014) {//2000+
      lWeight = DRW_LW_Conv::dwgInt2lineWidth( buf->getRawChar8() ); //RC
      DRW_DBG(" lwFlag (lWeight): ")DRW_dbg::dbg(" lwFlag (lWeight): "); DRW_DBG(lWeight)DRW_dbg::dbg(lWeight); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  //Only in blocks ????????
1495//    if (version > DRW::AC1018) {//2007+
1496//        std::uint8_t unk = buf->getBit();
1497//        DRW_DBG("unknown bit: "); DRW_DBG(unk); DRW_DBG("\n");
1498//    }
  return buf->isGood();
1500}

1502bool DRW_Entity::parseDwgEntHandle(DRW::Version version, dwgBuffer *buf, bool resetHandleStream){
  if (resetHandleStream && version > DRW::AC1018) {//2007+ skip string area
      buf->setPosition(objSize >> 3);
      buf->setBitPos(objSize & 7);
  }

  // libreDWG common_entity_data.spec:454-459: when ENC flag 0x40 is set,
  // an AcDbColor reference handle is the FIRST item in the handle stream
  // — read before owner / reactors / xdic / etc.  Set in parseDwg via
  // dwgBuffer::lastEnColorHadDbColorRef. The dwgReader resolves this
  // handle against dbColorMap after parseDwg returns and patches
  // color24 + colorName onto the entity.
  if (hasAcDbColorH && version > DRW::AC1015 && buf->numRemainingBytes() >= 4) {
      dwgHandle dbcH = buf->getOffsetHandle(handle);
      acDbColorHandle = dbcH.ref;
      DRW_DBG(" AcDbColor Handle: ")DRW_dbg::dbg(" AcDbColor Handle: ");
      DRW_DBGHL(dbcH.code, dbcH.size, dbcH.ref)DRW_dbg::dbgHL(dbcH.code, dbcH.size, dbcH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }

  if(ownerHandle){//entity are in block or in a polyline
      dwgHandle ownerH = buf->getOffsetHandle(handle);
      DRW_DBG("owner (parent) Handle: ")DRW_dbg::dbg("owner (parent) Handle: "); DRW_DBGHL(ownerH.code, ownerH.size, ownerH.ref)DRW_dbg::dbgHL(ownerH.code, ownerH.size, ownerH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("   Remaining bytes: ")DRW_dbg::dbg("   Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      parentHandle = ownerH.ref;
      DRW_DBG("Block (parent) Handle: ")DRW_dbg::dbg("Block (parent) Handle: "); DRW_DBGHL(ownerH.code, ownerH.size, parentHandle)DRW_dbg::dbgHL(ownerH.code, ownerH.size, parentHandle); DRW_DBG("\n")DRW_dbg::dbg("\n");
  } else
      DRW_DBG("NO Block (parent) Handle\n")DRW_dbg::dbg("NO Block (parent) Handle\n");

  DRW_DBG("\n Remaining bytes: ")DRW_dbg::dbg("\n Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  reactorHandles.clear();
  for (int i=0; i< numReactors;++i) {
      dwgHandle reactorsH = buf->getHandle();
      reactorHandles.push_back(reactorsH.ref);  // 2a.2: persist reactors
      DRW_DBG(" reactorsH control Handle: ")DRW_dbg::dbg(" reactorsH control Handle: "); DRW_DBGHL(reactorsH.code, reactorsH.size, reactorsH.ref)DRW_dbg::dbgHL(reactorsH.code, reactorsH.size, reactorsH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (xDictFlag !=1){//linetype in 2004 seems not have XDicObjH or NULL handle
      dwgHandle XDicObjH = buf->getHandle();
      xDictHandle = XDicObjH.ref;  // 2a.2: persist xdict
      DRW_DBG(" XDicObj control Handle: ")DRW_dbg::dbg(" XDicObj control Handle: "); DRW_DBGHL(XDicObjH.code, XDicObjH.size, XDicObjH.ref)DRW_dbg::dbgHL(XDicObjH.code, XDicObjH.size, XDicObjH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  if (version < DRW::AC1015) {//R14-
      //layer handle
      layerH = buf->getOffsetHandle(handle);
      DRW_DBG(" layer Handle: ")DRW_dbg::dbg(" layer Handle: "); DRW_DBGHL(layerH.code, layerH.size, layerH.ref)DRW_dbg::dbgHL(layerH.code, layerH.size, layerH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("   Remaining bytes: ")DRW_dbg::dbg("   Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      //lineType handle
      if(ltFlags == 3){
          lTypeH = buf->getOffsetHandle(handle);
          DRW_DBG("linetype Handle: ")DRW_dbg::dbg("linetype Handle: "); DRW_DBGHL(lTypeH.code, lTypeH.size, lTypeH.ref)DRW_dbg::dbgHL(lTypeH.code, lTypeH.size, lTypeH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
          DRW_DBG("   Remaining bytes: ")DRW_dbg::dbg("   Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      }
  }
  if (version < DRW::AC1018) {//2000+
      if (haveNextLinks == 0) {
          dwgHandle nextLinkH = buf->getOffsetHandle(handle);
          DRW_DBG(" prev nextLinkers Handle: ")DRW_dbg::dbg(" prev nextLinkers Handle: "); DRW_DBGHL(nextLinkH.code, nextLinkH.size, nextLinkH.ref)DRW_dbg::dbgHL(nextLinkH.code, nextLinkH.size, nextLinkH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
          DRW_DBG("\n Remaining bytes: ")DRW_dbg::dbg("\n Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
          prevEntLink = nextLinkH.ref;
          nextLinkH = buf->getOffsetHandle(handle);
          DRW_DBG(" next nextLinkers Handle: ")DRW_dbg::dbg(" next nextLinkers Handle: "); DRW_DBGHL(nextLinkH.code, nextLinkH.size, nextLinkH.ref)DRW_dbg::dbgHL(nextLinkH.code, nextLinkH.size, nextLinkH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
          DRW_DBG("\n Remaining bytes: ")DRW_dbg::dbg("\n Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
          nextEntLink = nextLinkH.ref;
      } else {
          nextEntLink = handle+1;
          prevEntLink = handle-1;
      }
  }
  if (version > DRW::AC1015) {//2004+
      //Parses Bookcolor handle
  }
  if (version > DRW::AC1014) {//2000+
      //layer handle
      layerH = buf->getOffsetHandle(handle);
      DRW_DBG(" layer Handle: ")DRW_dbg::dbg(" layer Handle: "); DRW_DBGHL(layerH.code, layerH.size, layerH.ref)DRW_dbg::dbgHL(layerH.code, layerH.size, layerH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("   Remaining bytes: ")DRW_dbg::dbg("   Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      //lineType handle
      if(ltFlags == 3){
          lTypeH = buf->getOffsetHandle(handle);
          DRW_DBG("linetype Handle: ")DRW_dbg::dbg("linetype Handle: "); DRW_DBGHL(lTypeH.code, lTypeH.size, lTypeH.ref)DRW_dbg::dbgHL(lTypeH.code, lTypeH.size, lTypeH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
          DRW_DBG("   Remaining bytes: ")DRW_dbg::dbg("   Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      }
  }
  if (version > DRW::AC1014) {//2000+
      if (version > DRW::AC1018) {//2007+
          if (materialFlag == 3) {
              dwgHandle materialH = buf->getOffsetHandle(handle);
              material = materialH.ref;
              DRW_DBG(" material Handle: ")DRW_dbg::dbg(" material Handle: "); DRW_DBGHL(materialH.code, materialH.size, materialH.ref)DRW_dbg::dbgHL(materialH.code, materialH.size, materialH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
              DRW_DBG("\n Remaining bytes: ")DRW_dbg::dbg("\n Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
          }
          if (shadowFlag == 3) {
              // AcDbShadow object handle (separate from entity shadow mode
              // populated from shadowFlag & 0x3 above). LibreCAD has no
              // shadow object consumer; leave discarding.
              dwgHandle shadowH = buf->getOffsetHandle(handle);
              DRW_DBG(" shadow Handle: ")DRW_dbg::dbg(" shadow Handle: "); DRW_DBGHL(shadowH.code, shadowH.size, shadowH.ref)DRW_dbg::dbgHL(shadowH.code, shadowH.size, shadowH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
              DRW_DBG("\n Remaining bytes: ")DRW_dbg::dbg("\n Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
          }
      }
      if (plotFlags == 3) {
          dwgHandle plotStyleH = buf->getOffsetHandle(handle);
          plotStyle = static_cast<int>(plotStyleH.ref);
          DRW_DBG(" plot style Handle: ")DRW_dbg::dbg(" plot style Handle: "); DRW_DBGHL(plotStyleH.code, plotStyleH.size, plotStyleH.ref)DRW_dbg::dbgHL(plotStyleH.code, plotStyleH.size, plotStyleH.ref
); DRW_DBG("\n")DRW_dbg::dbg("\n");
          DRW_DBG("\n Remaining bytes: ")DRW_dbg::dbg("\n Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      }
      if (version > DRW::AC1021) {//2010+ — §19.4.2: visual-style handles
          // Ground-truth: libreDWG common_entity_handle_data.spec lines
          // 141-150 and ODA spec v5.4.1 §19.4.2. Order matches: full,
          // face, edge — each conditional on its single-bit flag from
          // §19.4.1 (set in parseDwg above). All three are hard pointers
          // (libreDWG FIELD_HANDLE code 5), matching the existing
          // material/shadow/plotstyle handles in this block.
          if (hasFullVisualStyle) {
              dwgHandle h = buf->getOffsetHandle(handle);
              fullVisualStyleHandle = h.ref;
              DRW_DBG(" full visual-style H: ")DRW_dbg::dbg(" full visual-style H: ");
              DRW_DBGHL(h.code, h.size, h.ref)DRW_dbg::dbgHL(h.code, h.size, h.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
          }
          if (hasFaceVisualStyle) {
              dwgHandle h = buf->getOffsetHandle(handle);
              faceVisualStyleHandle = h.ref;
              DRW_DBG(" face visual-style H: ")DRW_dbg::dbg(" face visual-style H: ");
              DRW_DBGHL(h.code, h.size, h.ref)DRW_dbg::dbgHL(h.code, h.size, h.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
          }
          if (hasEdgeVisualStyle) {
              dwgHandle h = buf->getOffsetHandle(handle);
              edgeVisualStyleHandle = h.ref;
              DRW_DBG(" edge visual-style H: ")DRW_dbg::dbg(" edge visual-style H: ");
              DRW_DBGHL(h.code, h.size, h.ref)DRW_dbg::dbgHL(h.code, h.size, h.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
          }
      }
  }
  const int rb = buf->numRemainingBytes();
  DRW_DBG("\n DRW_Entity::parseDwgEntHandle Remaining bytes: ")DRW_dbg::dbg("\n DRW_Entity::parseDwgEntHandle Remaining bytes: "
); DRW_DBG(rb)DRW_dbg::dbg(rb); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (rb > 4) {  // 2-byte CRC + slack
      DRW_DBG("\n*** parseDwgEntHandle leftover ")DRW_dbg::dbg("\n*** parseDwgEntHandle leftover ");
      DRW_DBG(rb)DRW_dbg::dbg(rb);
      DRW_DBG(" bytes; entity handle ")DRW_dbg::dbg(" bytes; entity handle ");
      DRW_DBGH(handle)DRW_dbg::dbgH(handle);
      DRW_DBG(" oType ")DRW_dbg::dbg(" oType ");
      DRW_DBG(oType)DRW_dbg::dbg(oType);
      DRW_DBG(" — possible bit-stream misalignment ***\n")DRW_dbg::dbg(" — possible bit-stream misalignment ***\n");
  }
  return buf->isGood();
1648}

1650bool DRW_Point::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 10:
      basePoint.x = reader->getDouble();
      break;
  case 20:
      basePoint.y = reader->getDouble();
      break;
  case 30:
      basePoint.z = reader->getDouble();
      break;
  case 39:
      thickness = reader->getDouble();
      break;
  case 50:
      // DXF code 50 is in degrees; the field is radians (matching the DWG
      // path, drw_entities.cpp:1787). degrees -> radians is /ARAD (x pi/180);
      // the prior *ARAD only canceled with the writer's /ARAD on DXF->DXF and
      // corrupted the value for DXF->DWG. ARAD = 180/pi.
      xAxisAngle = reader->getDouble() / ARAD57.29577951308232;  // DXF degrees -> radians
      break;
  case 210:
      haveExtrusion = true;
      extPoint.x = reader->getDouble();
      break;
  case 220:
      extPoint.y = reader->getDouble();
      break;
  case 230:
      extPoint.z = reader->getDouble();
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }

  return true;
1686}

1688// ---------------------------------------------------------------------------
1689// Phase 4a (drafted 2026-05-15)
1690// ---------------------------------------------------------------------------
1691// `DRW_Entity::encodeDwgCommon` and `encodeDwgEntHandle` are R2000-only
1692// inverses of the corresponding parseDwg fragments above.  The version
1693// conditionals collapse: all `version > AC1014` branches fire (R2000 is
1694// AC1015 > AC1014), all `version > AC1015` and `version > AC1018` and
1695// `version > AC1021` branches skip.  Likewise `version < AC1015` skips.
1696//
1697// Discarded fields (Risk 4i):
1698//   - graphFlag B + optional graphData — we always emit graphFlag=0.
1699//   - haveNextLinks B — we emit 1 (no prev/next chain).
1700//   - acDbColorH — only fires when ENC flag 0x40 set; R2000 entity
1701//     encoders don't emit DBCOLOR refs yet.
1702//
1703// We always emit:
1704//   - entmode = 2 (modelspace, no owner-handle in stream — caller can
1705//     override before calling encodeDwgCommon if entity needs an owner).
1706//   - numReactors = 0
1707//   - ltFlags = 0 (BYLAYER), plotFlags = 0 (BYLAYER)
1708//   - invisibleFlag = 0 (visible)
1709//
1710// Caller must:
1711//   - Pre-populate `eType`, `handle`, `color`, `ltypeScale`, `lWeight`,
1712//     `layerH.ref` (handle of the layer this entity belongs to).
1713//   - The body emit between encodeDwgCommon and encodeDwgEntHandle is
1714//     per-entity (3BD basePoint for Point, etc.).

1716// Phase-2a kill switch for the full common-entity-header write contract
1717// (entity reactors/xdict/EED/visibility/entmode emission). Default ON. The
1718// emission is gated by DATA PRESENCE (empty reactorHandles/extData + visible
1719// == today's hardcoded zeros), so flipping this OFF restores the legacy
1720// byte-identical output as an emergency escape hatch. The per-field emission
1721// arms land in 2a.1..2a.5; this scaffolding commit changes no bytes.
1722#ifndef LIBDXFRW_FULL_COMMON_HEADER1
1723#define LIBDXFRW_FULL_COMMON_HEADER1 1
1724#endif

1726bool DRW_Entity::encodeDwgCommon(DRW::Version version, dwgBufferW *buf,
                                dwgBufferW *strBuf) {
  (void)strBuf;  // common data contains no strings
  if (version != DRW::AC1015 && version != DRW::AC1018 &&
      version != DRW::AC1024 && version != DRW::AC1027 &&
      version != DRW::AC1032) return false;

  // Object type: BS for AC1015/AC1018, OT for AC1024+.
  buf->putObjType(version, static_cast<std::uint16_t>(oType));

  // objSize stub — back-patched for AC1015/AC1018 only.  AC1024 derives
  // objSize from the body buffer size, so no RL is emitted.
  if (version < DRW::AC1024) {
      buf->putRawLong32(0);
  }

  // Own handle: code 0 per spec §20.4.1.
  dwgHandle ownH;
  ownH.code = 0;
  ownH.ref  = handle;
  ownH.size = 0;
  if (handle != 0) {
      std::uint32_t t = handle;
      while (t != 0) { t >>= 8; ++ownH.size; }
  }
  buf->putHandle(ownH);

  // No EED yet.
  buf->putBitShort(0);  // extDataSize=0

  // No graphics data.
  buf->putBit(0);  // graphFlag=0

  const bool hasOwner = parentHandle != DRW::NoHandle;

  // entmode: 0 = owner handle follows in the handle stream; 2 = modelspace,
  // no owner-handle in stream.
  buf->put2Bits(hasOwner ? 0 : 2);

  // numReactors (BL per spec §20.4.1). 2a.2: emit the real count; empty
  // reactorHandles → 0 → byte-identical to legacy.
1767#if LIBDXFRW_FULL_COMMON_HEADER1
  buf->putBitLong(static_cast<std::int32_t>(reactorHandles.size()));
1769#else
  buf->putBitLong(0);
1771#endif

  // R2004/R2010 (AC1018, AC1024): reader reads xDictFlag bit (version > AC1015)
  // then forces haveNextLinks=1 (no bit in stream).  We always emit
  // xDictFlag=0 (xdic-present) so the reader reads exactly one xdic handle
  // in the handle section — we emit the real handle when xDictHandle!=0 and
  // a null handle otherwise. This keeps the empty case byte-identical to the
  // legacy path (bit 0 + null handle) while round-tripping a real xdict.
  // R2000 (AC1015): no xDictFlag bit; reader's xDictFlag stays 0 so it ALWAYS
  // reads an xdic handle — same emit rule applies.
  // R2013+ (AC1027+): reader reads xDictFlag then reads haveNextLinks (bit restored).
  if (version == DRW::AC1015) {
      buf->putBit(1);  // nolinks=1 (R2000: no prev/next chain)
  } else {
      buf->putBit(0);  // xDictFlag=0 (xdic present; real-or-null handle follows)
      if (version > DRW::AC1024) {
          // libreDWG common_entity_data.spec — R2013+ has_ds_data (B). libdxfrw
          // never inlines an ACIS SAB datastore, so emit hasDsData (default 0).
          // The old code emitted literal 1 (mislabeled haveNextLinks), falsely
          // advertising an SAB blob and risking misparse in strict readers.
          buf->putBit(hasDsData);
      }
  }

  // ENC color (BS for R2000/R2004/R2010).
  buf->putEnColor(version, static_cast<std::uint16_t>(color));

  // ltypeScale BD.
  buf->putBitDouble(ltypeScale);

  // ltFlags BB (0 = BYLAYER), plotFlags BB (0 = BYLAYER).
  buf->put2Bits(0);
  buf->put2Bits(0);

  // R2010 (AC1024): materialFlag BB + shadowFlag RC (version > AC1018).
  if (version > DRW::AC1018) {
      buf->put2Bits(0);       // materialFlag BB = 0 (inherit)
      buf->putRawChar8(0);    // shadowFlag RC = 0 (inherit)
  }

  // R2010 (AC1024): three visual-style flag bits (version > AC1021).
  if (version > DRW::AC1021) {
      buf->putBit(0);  // hasFullVisualStyle
      buf->putBit(0);  // hasFaceVisualStyle
      buf->putBit(0);  // hasEdgeVisualStyle
  }

  // invisibleFlag BS (DXF 60). 2a.1: emit from `visible` (bit 0 = invisible)
  // instead of a hardcoded 0. visible==true → 0 → byte-identical to legacy.
1820#if LIBDXFRW_FULL_COMMON_HEADER1
  buf->putBitShort(visible ? 0 : 1);
1822#else
  buf->putBitShort(0);
1824#endif

  // lWeight RC (0 = byLayer per DRW_LW_Conv).
  buf->putRawChar8(static_cast<std::uint8_t>(lWeight));

  return true;
1830}

1832bool DRW_Entity::encodeDwgEntHandle(DRW::Version version, dwgBufferW *buf,
                                   dwgBufferW *handleBuf) {
  if (version != DRW::AC1015 && version != DRW::AC1018 &&
      version != DRW::AC1024 && version != DRW::AC1027 &&
      version != DRW::AC1032) return false;

  // For AC1024, handles are directed to handleBuf (the separate handle section);
  // for AC1015/AC1018, handles go into buf alongside the data.
  dwgBufferW *hb = (handleBuf != nullptr) ? handleBuf : buf;

  // Owner handle is present only when encodeDwgCommon emitted entmode=0.
  if (parentHandle != DRW::NoHandle) {
      dwgHandle owner;
      owner.code = 4;  // soft pointer owner, read via getOffsetHandle()
      owner.ref = parentHandle;
      owner.size = 0;
      std::uint32_t t = parentHandle;
      while (t != 0) { t >>= 8; ++owner.size; }
      hb->putHandle(owner);
  }

  // Reactor handles (2a.2): emitted before xdic, one per numReactors written
  // in the DATA section, as ABSOLUTE handles (reader uses getHandle()). Empty
  // reactorHandles → nothing emitted → byte-identical to legacy.
1856#if LIBDXFRW_FULL_COMMON_HEADER1
  for (std::uint32_t ref : reactorHandles) {
      dwgHandle rh;
      rh.code = 4;  // soft pointer
      rh.ref  = ref;
      rh.size = 0;
      if (ref != 0) { std::uint32_t t = ref; while (t != 0) { t >>= 8; ++rh.size; } }
      hb->putHandle(rh);
  }
1865#endif

  // XDic handle — xDictFlag=0 in the DATA section means the reader reads one
  // XDicObj handle here: emit the real handle when xDictHandle!=0, else the
  // null handle (matching the legacy byte-for-byte for the empty case).
  dwgHandle xDic;
  xDic.code = 3;
1872#if LIBDXFRW_FULL_COMMON_HEADER1
  xDic.ref  = xDictHandle;
  xDic.size = 0;
  if (xDictHandle != 0) {
      std::uint32_t t = xDictHandle; while (t != 0) { t >>= 8; ++xDic.size; }
  }
1878#else
  xDic.ref  = 0;
  xDic.size = 0;
1881#endif
  hb->putHandle(xDic);

  // Layer handle (R2000+ unconditional).  Hard pointer.
  dwgHandle lH;
  lH.code = layerH.ref == 0 ? 0 : 5;  // 5 = hard pointer for layer ref
  lH.ref  = layerH.ref;
  lH.size = 0;
  if (lH.ref != 0) {
      std::uint32_t t = lH.ref;
      while (t != 0) { t >>= 8; ++lH.size; }
  }
  hb->putHandle(lH);

  // ltFlags=0 → no separate lTypeH (BYLAYER).
  // plotFlags=0 → no plotStyleH (BYLAYER).
  // materialFlag=0 → no materialH (for AC1024).
  // visualStyle flags=0 → no visualStyleH (for AC1024).

  return true;
1901}

1903bool DRW_Point::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 27;  // POINT class id — see dwgreader.cpp:1111 dispatch
  if (!encodeDwgCommon(version, buf)) return false;

  // Point body — mirror of DRW_Point::parseDwg below.
  buf->putBitDouble(basePoint.x);
  buf->putBitDouble(basePoint.y);
  buf->putBitDouble(basePoint.z);
  buf->putThickness(thickness, /*b_R2000_style=*/true);
  buf->putExtrusion(extPoint, /*b_R2000_style=*/true);
  buf->putBitDouble(xAxisAngle);  // ODA §20.4.31 code 50

  return encodeDwgEntHandle(version, buf, handleBuf);
1917}

1919bool DRW_Point::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing point *********************************************\n")DRW_dbg::dbg("\n***************************** parsing point *********************************************\n"
);

  basePoint.x = buf->getBitDouble();
  basePoint.y = buf->getBitDouble();
  basePoint.z = buf->getBitDouble();
  DRW_DBG("point: ")DRW_dbg::dbg("point: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
  thickness = buf->getThickness(version > DRW::AC1014);//BD
  DRW_DBG("\nthickness: ")DRW_dbg::dbg("\nthickness: "); DRW_DBG(thickness)DRW_dbg::dbg(thickness);
  extPoint = buf->getExtrusion(version > DRW::AC1014);
  DRW_DBG(", Extrusion: ")DRW_dbg::dbg(", Extrusion: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z);

  xAxisAngle = buf->getBitDouble();  // ODA §20.4.31 code 50, stored in radians
  DRW_DBG("\n  x_axis: ")DRW_dbg::dbg("\n  x_axis: "); DRW_DBG(xAxisAngle)DRW_dbg::dbg(xAxisAngle); DRW_DBG("\n")DRW_dbg::dbg("\n");
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
  //    RS crc;   //RS */

  return buf->isGood();
1942}

1944bool DRW_Line::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 11:
      secPoint.x = reader->getDouble();
      break;
  case 21:
      secPoint.y = reader->getDouble();
      break;
  case 31:
      secPoint.z = reader->getDouble();
      break;
  default:
      return DRW_Point::parseCode(code, reader);
  }

  return true;
1960}

1962bool DRW_Line::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 19;  // LINE class id — see dwgreader.cpp:1105
  if (!encodeDwgCommon(version, buf)) return false;

  // R2000+ Line body — zIsZero shortcut: if both z's are 0, omit the
  // z fields entirely.  Reader reads `zIsZero` first, then RD x +
  // DD secX (default = x), RD y + DD secY (default = y), and
  // conditionally RD z + DD secZ.  Our putDefaultDouble always emits
  // the full RD via code 0b11; reader's getDefaultDouble with code
  // 0b11 returns the raw double.
  bool zIsZero = (basePoint.z == 0.0 && secPoint.z == 0.0);
  buf->putBit(zIsZero ? 1 : 0);
  buf->putRawDouble(basePoint.x);
  buf->putDefaultDouble(basePoint.x, secPoint.x);
  buf->putRawDouble(basePoint.y);
  buf->putDefaultDouble(basePoint.y, secPoint.y);
  if (!zIsZero) {
      buf->putRawDouble(basePoint.z);
      buf->putDefaultDouble(basePoint.z, secPoint.z);
  }
  buf->putThickness(thickness, /*b_R2000_style=*/true);
  buf->putExtrusion(extPoint, /*b_R2000_style=*/true);

  return encodeDwgEntHandle(version, buf, handleBuf);
1987}

1989bool DRW_Circle::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 18;  // CIRCLE class id — see dwgreader.cpp:1099
  if (!encodeDwgCommon(version, buf)) return false;

  // Circle body — mirror of DRW_Circle::parseDwg.
  buf->putBitDouble(basePoint.x);
  buf->putBitDouble(basePoint.y);
  buf->putBitDouble(basePoint.z);
  buf->putBitDouble(radious);
  buf->putThickness(thickness, /*b_R2000_style=*/true);
  buf->putExtrusion(extPoint, /*b_R2000_style=*/true);

  return encodeDwgEntHandle(version, buf, handleBuf);
2003}

2005bool DRW_Ray::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  // Ray = 40, Xline = 41 — derive from runtime type so DRW_Xline can
  // share this encoder (it inherits from DRW_Ray).
  oType = (eType == DRW::XLINE) ? 41 : 40;
  if (!encodeDwgCommon(version, buf)) return false;

  // 3 BD basePoint + 3 BD vector — same layout as parseDwg.
  buf->putBitDouble(basePoint.x);
  buf->putBitDouble(basePoint.y);
  buf->putBitDouble(basePoint.z);
  buf->putBitDouble(secPoint.x);
  buf->putBitDouble(secPoint.y);
  buf->putBitDouble(secPoint.z);

  return encodeDwgEntHandle(version, buf, handleBuf);
2021}

2023bool DRW_Trace::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 32;  // TRACE = 32 — see dwgreader.cpp:1317
  if (!encodeDwgCommon(version, buf)) return false;

  // Trace body — mirror of parseDwg.  Note the unusual layout:
  // thickness FIRST, then elevation (basePoint.z) as BD, then 4
  // corners as 2RD (z values share basePoint.z).
  buf->putThickness(thickness, /*b_R2000_style=*/true);
  buf->putBitDouble(basePoint.z);
  buf->putRawDouble(basePoint.x);
  buf->putRawDouble(basePoint.y);
  buf->putRawDouble(secPoint.x);
  buf->putRawDouble(secPoint.y);
  buf->putRawDouble(thirdPoint.x);
  buf->putRawDouble(thirdPoint.y);
  buf->putRawDouble(fourPoint.x);
  buf->putRawDouble(fourPoint.y);
  buf->putExtrusion(extPoint, /*b_R2000_style=*/true);

  return encodeDwgEntHandle(version, buf, handleBuf);
2044}

2046bool DRW_Spline::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 36;  // SPLINE class id — see dwgreader.cpp:1329
  if (!encodeDwgCommon(version, buf)) return false;
  encodeDwgSplineBody(version, buf);
  return encodeDwgEntHandle(version, buf, handleBuf);
2052}

2054// Spline body encode: the scenario/degree/knots/ctrl/fit section, WITHOUT the
2055// leading encodeDwgCommon or the trailing encodeDwgEntHandle. Factored out so
2056// DRW_Helix::encodeDwg can reuse the identical payload (Phase 8a-1).
2057// Omits the DXF-only flag70/extrusion (210-230) which the DWG stream never
2058// carries here.
2059void DRW_Spline::encodeDwgSplineBody(DRW::Version version, dwgBufferW *buf) const {
  // Scenario:
  //   1 = control-point / rational / planar (uses knots + control + weights)
  //   2 = fit-point (uses fit points + tangents + tolerance)
  // When both lists are populated (e.g. DXF-sourced splines), prefer scenario 1
  // (ctrl + knots) and drop the fit list from the DWG stream — scenario 1 has no
  // fit-point section, so writing both would corrupt all subsequent entities.
  const bool hasFit  = !fitlist.empty();
  const bool hasCtrl = !controllist.empty();
  std::int32_t scenario = (hasFit && !hasCtrl) ? 2 : 1;
  if (m_scenario == 1 && hasCtrl) {
      scenario = 1;
  } else if (m_scenario == 2 && hasFit) {
      scenario = 2;
  }
  buf->putBitLong(scenario);
  if (version > DRW::AC1024) {
      // splFlag1 bit 0: method = fit points; bit 2: closed;
      // bit 3: knotParam participates in R2013+ scenario selection.
      std::int32_t splFlag1 = m_splineFlags1;
      splFlag1 &= ~(kSplineFlagMethodFitPoints | kSplineFlagUseKnotParameter | kSplineFlagClosed);
      if (scenario == 2) {
          splFlag1 |= kSplineFlagMethodFitPoints | kSplineFlagUseKnotParameter;
          if (flags & 0x01) splFlag1 |= kSplineFlagClosed;
      } else {
          if (flags & 0x01) splFlag1 |= kSplineFlagClosed;
      }
      buf->putBitLong(splFlag1);
      std::int32_t knotParam = m_knotParam;
      if (scenario == 1) {
          knotParam = kSplineKnotParamCustom;
      } else if (knotParam == kSplineKnotParamCustom) {
          knotParam = 0;
      }
      buf->putBitLong(knotParam);
  }
  buf->putBitLong(static_cast<std::int32_t>(degree));

  if (scenario == 2) {
      buf->putBitDouble(tolfit);
      buf->put3BitDouble(tgStart);
      buf->put3BitDouble(tgEnd);
      const std::int32_t nFit = static_cast<std::int32_t>(fitlist.size());
      buf->putBitLong(nFit);
  } else {
      // scenario == 1
      // Reader at parseDwg reads three flag bits in this order:
      //   rational bit  (flags bit 2 → 0x04)
      //   closed bit    (flags bit 0 → 0x01)
      //   periodic bit  (flags bit 1 → 0x02)
      const bool hasNonDefaultWeights = std::any_of(weightlist.begin(), weightlist.end(), differsFromUnitWeight);
      buf->putBit(((flags & 0x4) || hasNonDefaultWeights) ? 1 : 0);  // rational
      buf->putBit((flags & 0x1) ? 1 : 0);  // closed
      buf->putBit((flags & 0x2) ? 1 : 0);  // periodic
      buf->putBitDouble(tolknot);
      buf->putBitDouble(tolcontrol);
      const std::int32_t nKnots = static_cast<std::int32_t>(knotslist.size());
      const std::int32_t nCtrl  = static_cast<std::int32_t>(controllist.size());
      buf->putBitLong(nKnots);
      buf->putBitLong(nCtrl);
      // weight bit: caller populates weightlist when each control point
      // has a non-default weight (NURBS conics).
      bool hasWeights = !weightlist.empty();
      buf->putBit(hasWeights ? 1 : 0);
  }

  // Data sections are scenario-gated to avoid stream corruption:
  // parseDwg reads knots+ctrl only for scenario 1, fit only for scenario 2.
  if (scenario == 1) {
      for (double k : knotslist) buf->putBitDouble(k);
      for (size_t i = 0; i < controllist.size(); ++i) {
          buf->put3BitDouble(*controllist[i]);
          if (!weightlist.empty()) {
              double w = (i < weightlist.size()) ? weightlist[i] : 1.0;
              buf->putBitDouble(w);
          }
      }
  } else {
      for (const auto& fp : fitlist) buf->put3BitDouble(*fp);
  }
2139}

2141// DRW_Helix::encodeDwg — spline body (oType = HELIX class 503) + AcDbHelix
2142// trailer, then the common entity handle data. Trailer field order MUST match
2143// DRW_Helix::parseDwg (Phase 8a-1).
2144bool DRW_Helix::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = kDwgClassNum;  // HELIX custom class 503
  if (!encodeDwgCommon(version, buf)) return false;
  encodeDwgSplineBody(version, buf);

  // AcDbHelix trailer (same order as parseDwg):
  buf->putBitLong(m_majorVersion);
  buf->putBitLong(m_maintVersion);
  buf->put3BitDouble(axisBasePt);
  buf->put3BitDouble(startPt);
  buf->put3BitDouble(axisVector);
  buf->putBitDouble(radius);
  buf->putBitDouble(turns);
  buf->putBitDouble(turnHeight);
  buf->putBit(handedness ? 1 : 0);
  buf->putRawChar8(static_cast<std::uint8_t>(constraintType));

  return encodeDwgEntHandle(version, buf, handleBuf);
2163}

2165bool DRW_MText::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 44;  // MTEXT class id — see dwgreader.cpp:1215
  if (!encodeDwgCommon(version, buf)) return false;

  // R2000/R2004/R2010 MTEXT body — mirror of DRW_MText::parseDwg.
  buf->put3BitDouble(basePoint);          // insertion
  buf->put3BitDouble(extPoint);           // extrusion
  buf->put3BitDouble(secPoint);           // X-axis dir
  buf->putBitDouble(widthscale);          // rect width
  if (version > DRW::AC1018) {
      buf->putBitDouble(0.0);             // rect height, R2007+
  }
  buf->putBitDouble(height);              // text height
  buf->putBitShort(static_cast<std::uint16_t>(textgen));  // attachment
  buf->putBitShort(static_cast<std::uint16_t>(alignH));   // drawing dir
  buf->putBitDouble(0.0);                 // ext_ht (extents height; undocumented)
  buf->putBitDouble(0.0);                 // ext_wid (extents width; undocumented)
  // For AC1024: text goes to string buffer; for AC1015/AC1018: inline.
  (strBuf ? strBuf : buf)->putVariableText(version, text);
  // R2000+ extras:
  buf->putBitShort(linespacingStyle);     // linespacing style BS 73
  buf->putBitDouble(interlin);            // linespacing factor BD
  buf->putBit(0);                         // unknown bit
  if (version > DRW::AC1015) {            // R2004+: background flags BL
      buf->putBitLong(m_backgroundFlags);
      if ((m_backgroundFlags & 0x01) || (version >= DRW::AC1032 && (m_backgroundFlags & 0x10))) {
          buf->putBitDouble(m_backgroundScale);  // BitDouble (matches the read fix)
          buf->putCmColor(version, static_cast<std::uint16_t>(m_backgroundColor));
          buf->putBitLong(m_backgroundTransparency);
      }
  }
  if (version >= DRW::AC1032) {
      buf->putBit(m_r2018IsNotAnnotative ? 1 : 0);
      if (m_r2018IsNotAnnotative) {
          buf->putBitShort(m_r2018Version);
          buf->putBit(m_r2018DefaultFlag ? 1 : 0);
          buf->putBitLong(m_r2018Attachment);
          buf->put3BitDouble(m_r2018XAxisDir);
          buf->put3BitDouble(m_r2018InsertionPoint);
          buf->putBitDouble(m_r2018RectWidth);
          buf->putBitDouble(m_r2018RectHeight);
          buf->putBitDouble(m_r2018ExtentsHeight);
          buf->putBitDouble(m_r2018ExtentsWidth);
          buf->putBitShort(m_r2018ColumnType);
          if (m_r2018ColumnType != 0) {
              std::int32_t columnCount = m_r2018ColumnCount;
              if (!m_r2018ColumnAutoHeight && m_r2018ColumnType == 2
                  && !m_r2018ColumnHeights.empty()) {
                  columnCount = static_cast<std::int32_t>(m_r2018ColumnHeights.size());
              }
              buf->putBitLong(columnCount);
              buf->putBitDouble(m_r2018ColumnWidth);
              buf->putBitDouble(m_r2018ColumnGutter);
              buf->putBit(m_r2018ColumnAutoHeight ? 1 : 0);
              buf->putBit(m_r2018ColumnFlowReversed ? 1 : 0);
              if (!m_r2018ColumnAutoHeight && m_r2018ColumnType == 2) {
                  for (std::int32_t i = 0; i < columnCount; ++i) {
                      const double columnHeight = static_cast<size_t>(i) < m_r2018ColumnHeights.size()
                          ? m_r2018ColumnHeights[static_cast<size_t>(i)]
                          : 0.0;
                      buf->putBitDouble(columnHeight);
                  }
              }
          }
      }
  }

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  // styleH — hard pointer to STYLE table record (default STANDARD).
  dwgBufferW *hb = handleBuf ? handleBuf : buf;
  putHardPointerHandle(hb, (styleH.ref == 0) ? 0x13 : styleH.ref);
  if (version >= DRW::AC1032 && m_r2018IsNotAnnotative)
      putHardPointerHandle(hb, (m_r2018AppIdHandle == 0) ? 0x14 : m_r2018AppIdHandle);
  return true;
2241}

2243bool DRW_Insert::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  // 2b.6: emit MINSERT (oType 8) when a column/row grid is present;
  // otherwise a plain INSERT (oType 7). The reader keys the grid block off
  // oType==8 (parseDwg :3189).
  oType = (colcount > 1 || rowcount > 1) ? 8 : 7;
  if (!encodeDwgCommon(version, buf)) return false;

  // INSERT body — mirror of DRW_Insert::parseDwg for R2000.
  buf->putBitDouble(basePoint.x);
  buf->putBitDouble(basePoint.y);
  buf->putBitDouble(basePoint.z);

  // dataFlags: pick the most compact form based on actual scales.
  //   3 → all scales default to 1.0 (no emit)
  //   2 → uniform scale (xscale RD only; yscale=zscale=xscale)
  //   1 → xscale defaults to 1, yscale/zscale as DD against xscale
  //   0 → xscale RD; yscale/zscale as DD against xscale
  if (xscale == 1.0 && yscale == 1.0 && zscale == 1.0) {
      buf->put2Bits(3);
  } else if (xscale == yscale && yscale == zscale) {
      buf->put2Bits(2);
      buf->putRawDouble(xscale);
  } else {
      // Use dataFlags=0 (general case): RD x + DD y + DD z.
      buf->put2Bits(0);
      buf->putRawDouble(xscale);
      buf->putDefaultDouble(xscale, yscale);
      buf->putDefaultDouble(xscale, zscale);
  }

  buf->putBitDouble(angle);                // radians
  buf->putExtrusion(extPoint, /*b_R2000_style=*/false);
  buf->putBit(0);                          // hasAttrib = 0 (no ATTRIBs)
  // hasAttrib==0 ⇒ the SINCE-R2004 num_owned BL is absent (parse :3184), so
  // the MINSERT grid (oType==8) follows the hasAttrib bit directly. Field
  // order mirrors parseDwg :3190-3193 (colcount BS, rowcount BS, colspace BD,
  // rowspace BD) and libreDWG dwg.spec num_cols/num_rows/col_spacing/row_spacing.
  if (oType == 8) {  // MINSERT grid
      buf->putBitShort(static_cast<std::uint16_t>(colcount));
      buf->putBitShort(static_cast<std::uint16_t>(rowcount));
      buf->putBitDouble(colspace);
      buf->putBitDouble(rowspace);
  }

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  // BLOCK_RECORD hard pointer.
  dwgHandle bhH;
  bhH.code = (blockRecH.ref == 0) ? 0 : 5;
  bhH.ref  = blockRecH.ref;
  bhH.size = 0;
  if (bhH.ref != 0) {
      std::uint32_t t = bhH.ref;
      while (t != 0) { t >>= 8; ++bhH.size; }
  }
  (handleBuf ? handleBuf : buf)->putHandle(bhH);
  return true;
2301}

2303bool DRW_3Dface::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 28;  // 3DFACE class id — see dwgreader.cpp:1237
  if (!encodeDwgCommon(version, buf)) return false;

  // R2000+ 3DFACE body — mirror of parseDwg's z_is_zero / has_no_flag
  // optimization.  Reader checks `invisibleflag != NoEdge`; if NoEdge,
  // emit has_no_flag=1 to suppress the BS read.
  bool hasNoFlag = (invisibleflag == /*NoEdge*/0);
  bool zIsZero   = (basePoint.z == 0.0);
  buf->putBit(hasNoFlag ? 1 : 0);
  buf->putBit(zIsZero ? 1 : 0);
  buf->putRawDouble(basePoint.x);
  buf->putRawDouble(basePoint.y);
  if (!zIsZero) buf->putRawDouble(basePoint.z);
  buf->putDefaultDouble(basePoint.x, secPoint.x);
  buf->putDefaultDouble(basePoint.y, secPoint.y);
  buf->putDefaultDouble(basePoint.z, secPoint.z);
  buf->putDefaultDouble(secPoint.x, thirdPoint.x);
  buf->putDefaultDouble(secPoint.y, thirdPoint.y);
  buf->putDefaultDouble(secPoint.z, thirdPoint.z);
  buf->putDefaultDouble(thirdPoint.x, fourPoint.x);
  buf->putDefaultDouble(thirdPoint.y, fourPoint.y);
  buf->putDefaultDouble(thirdPoint.z, fourPoint.z);
  if (!hasNoFlag) buf->putBitShort(static_cast<std::uint16_t>(invisibleflag));

  return encodeDwgEntHandle(version, buf, handleBuf);
2330}

2332bool DRW_Solid::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 31;  // SOLID class id — see dwgreader.cpp:1305
  if (!encodeDwgCommon(version, buf)) return false;

  // Same body layout as TRACE (4 corners + extrusion).  Duplicated
  // here rather than delegating to DRW_Trace::encodeDwg because that
  // hardcodes oType=32.
  buf->putThickness(thickness, /*b_R2000_style=*/true);
  buf->putBitDouble(basePoint.z);
  buf->putRawDouble(basePoint.x);
  buf->putRawDouble(basePoint.y);
  buf->putRawDouble(secPoint.x);
  buf->putRawDouble(secPoint.y);
  buf->putRawDouble(thirdPoint.x);
  buf->putRawDouble(thirdPoint.y);
  buf->putRawDouble(fourPoint.x);
  buf->putRawDouble(fourPoint.y);
  buf->putExtrusion(extPoint, /*b_R2000_style=*/true);

  return encodeDwgEntHandle(version, buf, handleBuf);
2353}

2355bool DRW_LWPolyline::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 77;  // LWPOLYLINE class id — see dwgreader.cpp:1202
  if (!encodeDwgCommon(version, buf)) return false;

  // DRW_LWPolyline::flags carries DXF-side bits (1=closed, 128=plinegen).
  // DWG-side flags are different: they signal which optional fields are
  // present.  Per parseDwg, bit 9 (0x200) = closed, bit 8 (0x100) =
  // plinegen.  Build the DWG flags from the DXF flags plus the data.
  std::uint16_t dwgFlags = 0;
  if (flags & 1)   dwgFlags |= 0x200;   // closed
  if (flags & 128) dwgFlags |= 0x100;   // plinegen
  if (thickness != 0.0) dwgFlags |= 0x2;
  if (width     != 0.0) dwgFlags |= 0x4;
  if (elevation != 0.0) dwgFlags |= 0x8;
  bool defaultExt = (extPoint.x == 0.0 && extPoint.y == 0.0 && extPoint.z == 1.0);
  if (!defaultExt) dwgFlags |= 0x1;
  // Detect per-vertex bulge / width data.
  bool anyBulge = false;
  bool anyWidth = false;
  bool anyVertexId = false;
  for (const auto& v : vertlist) {
      if (v && v->bulge    != 0.0) anyBulge = true;
      if (v && (v->stawidth != 0.0 || v->endwidth != 0.0)) anyWidth = true;
      if (v && v->identifier != 0) anyVertexId = true;
  }
  if (anyBulge) dwgFlags |= 0x10;
  if (anyWidth) dwgFlags |= 0x20;
  if (version > DRW::AC1021 && anyVertexId) dwgFlags |= 0x400;

  buf->putBitShort(dwgFlags);
  if (dwgFlags & 0x4)  buf->putBitDouble(width);
  if (dwgFlags & 0x8)  buf->putBitDouble(elevation);
  if (dwgFlags & 0x2)  buf->putBitDouble(thickness);
  if (dwgFlags & 0x1)  buf->putExtrusion(extPoint, /*b_R2000_style=*/false);

  const std::int32_t numVerts = static_cast<std::int32_t>(vertlist.size());
  buf->putBitLong(numVerts);
  if (dwgFlags & 0x10) buf->putBitLong(numVerts);  // bulgesnum
  if (version > DRW::AC1021 && (dwgFlags & 0x400)) {
      buf->putBitLong(numVerts);                    // vertexIdCount
  }
  if (dwgFlags & 0x20) buf->putBitLong(numVerts);  // widthsnum

  if (numVerts > 0) {
      // First vertex as 2RD.  Subsequent vertices as 2DD relative to
      // the previous, with putDefaultDouble always emitting code 0b11
      // (full RD); the reader's getDefaultDouble returns the raw value.
      buf->putRawDouble(vertlist[0]->x);
      buf->putRawDouble(vertlist[0]->y);
      for (size_t i = 1; i < vertlist.size(); ++i) {
          buf->putDefaultDouble(vertlist[i-1]->x, vertlist[i]->x);
          buf->putDefaultDouble(vertlist[i-1]->y, vertlist[i]->y);
      }
      if (dwgFlags & 0x10) {
          for (const auto& v : vertlist)
              buf->putBitDouble(v->bulge);
      }
      if (version > DRW::AC1021 && (dwgFlags & 0x400)) {
          for (const auto& v : vertlist)
              buf->putBitLong(static_cast<std::int32_t>(v->identifier));
      }
      if (dwgFlags & 0x20) {
          for (const auto& v : vertlist) {
              buf->putBitDouble(v->stawidth);
              buf->putBitDouble(v->endwidth);
          }
      }
  }

  return encodeDwgEntHandle(version, buf, handleBuf);
2426}

2428bool DRW_Block::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  // BLOCK = 4, ENDBLK = 5 per DWG spec.  isEnd controls which.
  oType = isEnd ? 5 : 4;
  if (!encodeDwgCommon(version, buf)) return false;
  if (!isEnd) {
      (strBuf ? strBuf : buf)->putVariableText(version, name);
  }
  if (version > DRW::AC1018) {
      buf->putBit(0);  // unknown bit (R2007+: always 0 for our output)
  }
  return encodeDwgEntHandle(version, buf, handleBuf);
2440}

2442bool DRW_Text::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 1;  // TEXT class id — see dwgreader.cpp:1208
  if (!encodeDwgCommon(version, buf)) return false;

  // R2000+ TEXT body — mirror of DRW_Text::parseDwg.  We emit
  // data_flags=0 so the reader sees every optional field rather than
  // substituting defaults — keeps the encoder simple, costs ~30 bytes
  // per TEXT versus the most compressed form.
  buf->putRawChar8(0);                              // data_flags=0
  buf->putRawDouble(basePoint.z);                   // elevation RD
  buf->putRawDouble(basePoint.x);                   // insertion 2RD
  buf->putRawDouble(basePoint.y);
  buf->putDefaultDouble(basePoint.x, secPoint.x);   // alignment 2DD
  buf->putDefaultDouble(basePoint.y, secPoint.y);
  buf->putExtrusion(extPoint, /*b_R2000_style=*/true);
  buf->putThickness(thickness, /*b_R2000_style=*/true);
  buf->putRawDouble(oblique);                       // oblique angle
  // Angle: struct holds degrees; on-disk format is radians.  Reader
  // does `angle *= ARAD` (180/π) after read.  Inverse: divide here.
  buf->putRawDouble(angle / ARAD57.29577951308232);
  buf->putRawDouble(height);                        // text height
  buf->putRawDouble(widthscale);                    // width factor
  (strBuf ? strBuf : buf)->putVariableText(version, text);  // text string
  buf->putBitShort(static_cast<std::uint16_t>(textgen));
  buf->putBitShort(static_cast<std::uint16_t>(alignH));
  buf->putBitShort(static_cast<std::uint16_t>(alignV));

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  // styleH — hard pointer to STYLE table record.  Default points at
  // the STANDARD textstyle (handle 0x13) if caller hasn't set one.
  dwgHandle sH;
  std::uint32_t sref = (styleH.ref == 0) ? 0x13 : styleH.ref;
  sH.code = 5;  // hard pointer
  sH.ref  = sref;
  sH.size = 0;
  if (sref != 0) {
      std::uint32_t t = sref;
      while (t != 0) { t >>= 8; ++sH.size; }
  }
  (handleBuf ? handleBuf : buf)->putHandle(sH);
  return true;
2485}

2487bool DRW_Ellipse::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 35;  // ELLIPSE class id — see dwgreader.cpp:1117
  if (!encodeDwgCommon(version, buf)) return false;

  // Ellipse body — mirror of DRW_Ellipse::parseDwg.
  buf->put3BitDouble(basePoint);       // center
  buf->put3BitDouble(secPoint);        // major axis vector
  buf->put3BitDouble(extPoint);        // extrusion
  buf->putBitDouble(ratio);            // minor/major ratio
  buf->putBitDouble(staparam);         // start parameter
  buf->putBitDouble(endparam);         // end parameter

  return encodeDwgEntHandle(version, buf, handleBuf);
2501}

2503bool DRW_Arc::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 17;  // ARC class id — see dwgreader.cpp:1093
  if (!encodeDwgCommon(version, buf)) return false;

  // Arc body — Circle body + 2 BD angles.
  buf->putBitDouble(basePoint.x);
  buf->putBitDouble(basePoint.y);
  buf->putBitDouble(basePoint.z);
  buf->putBitDouble(radious);
  buf->putThickness(thickness, /*b_R2000_style=*/true);
  buf->putExtrusion(extPoint, /*b_R2000_style=*/true);
  buf->putBitDouble(staangle);
  buf->putBitDouble(endangle);

  return encodeDwgEntHandle(version, buf, handleBuf);
2519}

2521bool DRW_Line::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing line *********************************************\n")DRW_dbg::dbg("\n***************************** parsing line *********************************************\n"
);

  if (version < DRW::AC1015) {//14-
      basePoint.x = buf->getBitDouble();
      basePoint.y = buf->getBitDouble();
      basePoint.z = buf->getBitDouble();
      secPoint.x = buf->getBitDouble();
      secPoint.y = buf->getBitDouble();
      secPoint.z = buf->getBitDouble();
  }
  if (version > DRW::AC1014) {//2000+
      bool zIsZero = buf->getBit(); //B
      basePoint.x = buf->getRawDouble();//RD
      secPoint.x = buf->getDefaultDouble(basePoint.x);//DD
      basePoint.y = buf->getRawDouble();//RD
      secPoint.y = buf->getDefaultDouble(basePoint.y);//DD
      if (!zIsZero) {
          basePoint.z = buf->getRawDouble();//RD
          secPoint.z = buf->getDefaultDouble(basePoint.z);//DD
      }
  }
  DRW_DBG("start point: ")DRW_dbg::dbg("start point: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
  DRW_DBG("\nend point: ")DRW_dbg::dbg("\nend point: "); DRW_DBGPT(secPoint.x, secPoint.y, secPoint.z)DRW_dbg::dbgPT(secPoint.x, secPoint.y, secPoint.z);
  thickness = buf->getThickness(version > DRW::AC1014);//BD
  DRW_DBG("\nthickness: ")DRW_dbg::dbg("\nthickness: "); DRW_DBG(thickness)DRW_dbg::dbg(thickness);
  extPoint = buf->getExtrusion(version > DRW::AC1014);
  DRW_DBG(", Extrusion: ")DRW_dbg::dbg(", Extrusion: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z);DRW_DBG("\n")DRW_dbg::dbg("\n");
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
2555//    RS crc;   //RS */
  return buf->isGood();
2557}

2559bool DRW_Ray::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing ray/xline *********************************************\n")DRW_dbg::dbg("\n***************************** parsing ray/xline *********************************************\n"
);
  basePoint.x = buf->getBitDouble();
  basePoint.y = buf->getBitDouble();
  basePoint.z = buf->getBitDouble();
  secPoint.x = buf->getBitDouble();
  secPoint.y = buf->getBitDouble();
  secPoint.z = buf->getBitDouble();
  DRW_DBG("start point: ")DRW_dbg::dbg("start point: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
  DRW_DBG("\nvector: ")DRW_dbg::dbg("\nvector: "); DRW_DBGPT(secPoint.x, secPoint.y, secPoint.z)DRW_dbg::dbgPT(secPoint.x, secPoint.y, secPoint.z);
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
2575//    RS crc;   //RS */
  return buf->isGood();
2577}

2579void DRW_Circle::applyExtrusion(){
  if (haveExtrusion) {
      //NOTE: Commenting these out causes the the arcs being tested to be located
      //on the other side of the y axis (all x dimensions are negated).
      calculateAxis(extPoint);
      extrudePoint(extPoint, &basePoint);
  }
2586}

2588bool DRW_Circle::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 40:
      radious = reader->getDouble();
      break;
  default:
      return DRW_Point::parseCode(code, reader);
  }

  return true;
2598}

2600bool DRW_Circle::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, nullptr, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing circle *********************************************\n")DRW_dbg::dbg("\n***************************** parsing circle *********************************************\n"
);

  basePoint.x = buf->getBitDouble();
  basePoint.y = buf->getBitDouble();
  basePoint.z = buf->getBitDouble();
  DRW_DBG("center: ")DRW_dbg::dbg("center: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
  radious = buf->getBitDouble();
  DRW_DBG("\nradius: ")DRW_dbg::dbg("\nradius: "); DRW_DBG(radious)DRW_dbg::dbg(radious);

  thickness = buf->getThickness(version > DRW::AC1014);
  DRW_DBG(" thickness: ")DRW_dbg::dbg(" thickness: "); DRW_DBG(thickness)DRW_dbg::dbg(thickness);
  extPoint = buf->getExtrusion(version > DRW::AC1014);
  DRW_DBG("\nextrusion: ")DRW_dbg::dbg("\nextrusion: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");

  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
2621//    RS crc;   //RS */
  return buf->isGood();
2623}

2625void DRW_Arc::applyExtrusion(){
  DRW_Circle::applyExtrusion();

  if(haveExtrusion){
      // If the extrusion vector has a z value less than 0, the angles for the arc
      // have to be mirrored since DXF files use the right hand rule.
      // Note that the following code only handles the special case where there is a 2D
      // drawing with the z axis heading into the paper (or rather screen). An arbitrary
      // extrusion axis (with x and y values greater than 1/64) may still have issues.
      if (fabs(extPoint.x) < 0.015625 && fabs(extPoint.y) < 0.015625 && extPoint.z < 0.0) {
          staangle=M_PI3.14159265358979323846-staangle;
          endangle=M_PI3.14159265358979323846-endangle;

          double temp = staangle;
          staangle=endangle;
          endangle=temp;
      }
  }
2643}

2645bool DRW_Arc::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 50:
      staangle = reader->getDouble()/ ARAD57.29577951308232;
      break;
  case 51:
      endangle = reader->getDouble()/ ARAD57.29577951308232;
      break;
  default:
      return DRW_Circle::parseCode(code, reader);
  }

  return true;
2658}

2660bool DRW_Arc::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing circle arc *********************************************\n")DRW_dbg::dbg("\n***************************** parsing circle arc *********************************************\n"
);

  basePoint.x = buf->getBitDouble();
  basePoint.y = buf->getBitDouble();
  basePoint.z = buf->getBitDouble();
  DRW_DBG("center point: ")DRW_dbg::dbg("center point: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);

  radious = buf->getBitDouble();
  DRW_DBG("\nradius: ")DRW_dbg::dbg("\nradius: "); DRW_DBG(radious)DRW_dbg::dbg(radious);
  thickness = buf->getThickness(version > DRW::AC1014);
  DRW_DBG(" thickness: ")DRW_dbg::dbg(" thickness: "); DRW_DBG(thickness)DRW_dbg::dbg(thickness);
  extPoint = buf->getExtrusion(version > DRW::AC1014);
  DRW_DBG("\nextrusion: ")DRW_dbg::dbg("\nextrusion: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z);
  staangle = buf->getBitDouble();
  DRW_DBG("\nstart angle: ")DRW_dbg::dbg("\nstart angle: "); DRW_DBG(staangle)DRW_dbg::dbg(staangle);
  endangle = buf->getBitDouble();
  DRW_DBG(" end angle: ")DRW_dbg::dbg(" end angle: "); DRW_DBG(endangle)DRW_dbg::dbg(endangle); DRW_DBG("\n")DRW_dbg::dbg("\n");
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
  return buf->isGood();
2685}

2687bool DRW_Ellipse::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 40:
      ratio = reader->getDouble();
      break;
  case 41:
      staparam = reader->getDouble();
      break;
  case 42:
      endparam = reader->getDouble();
      break;
  default:
      return DRW_Line::parseCode(code, reader);
  }

  return true;
2703}

2705void DRW_Ellipse::applyExtrusion(){
  if (haveExtrusion) {
      calculateAxis(extPoint);
      extrudePoint(extPoint, &secPoint);
      double intialparam = staparam;
      if (extPoint.z < 0.){
          staparam = M_PIx26.283185307179586 - endparam;
          endparam = M_PIx26.283185307179586 - intialparam;
      }
  }
2715}

2717//if ratio > 1 minor axis are greather than major axis, correct it
2718void DRW_Ellipse::correctAxis(){
  bool complete = false;
  if (staparam == endparam) {
      staparam = 0.0;
      endparam = M_PIx26.283185307179586; //2*M_PI;
      complete = true;
  }
  if (ratio > 1){
      if ( fabs(endparam - staparam - M_PIx26.283185307179586) < 1.0e-10)
          complete = true;
      double incX = secPoint.x;
      secPoint.x = -(secPoint.y * ratio);
      secPoint.y = incX*ratio;
      ratio = 1/ratio;
      if (!complete){
          if (staparam < M_PI_21.57079632679489661923)
              staparam += M_PI3.14159265358979323846 *2;
          if (endparam < M_PI_21.57079632679489661923)
              endparam += M_PI3.14159265358979323846 *2;
          endparam -= M_PI_21.57079632679489661923;
          staparam -= M_PI_21.57079632679489661923;
      }
  }
2741}

2743bool DRW_Ellipse::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing ellipse *********************************************\n")DRW_dbg::dbg("\n***************************** parsing ellipse *********************************************\n"
);

  basePoint =buf->get3BitDouble();
  DRW_DBG("center: ")DRW_dbg::dbg("center: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
  secPoint =buf->get3BitDouble();
  DRW_DBG(", axis: ")DRW_dbg::dbg(", axis: "); DRW_DBGPT(secPoint.x, secPoint.y, secPoint.z)DRW_dbg::dbgPT(secPoint.x, secPoint.y, secPoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  extPoint =buf->get3BitDouble();
  DRW_DBG("Extrusion: ")DRW_dbg::dbg("Extrusion: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z);
  ratio = buf->getBitDouble();//BD
  DRW_DBG("\nratio: ")DRW_dbg::dbg("\nratio: "); DRW_DBG(ratio)DRW_dbg::dbg(ratio);
  staparam = buf->getBitDouble();//BD
  DRW_DBG(" start param: ")DRW_dbg::dbg(" start param: "); DRW_DBG(staparam)DRW_dbg::dbg(staparam);
  endparam = buf->getBitDouble();//BD
  DRW_DBG(" end param: ")DRW_dbg::dbg(" end param: "); DRW_DBG(endparam)DRW_dbg::dbg(endparam); DRW_DBG("\n")DRW_dbg::dbg("\n");

  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
2765//    RS crc;   //RS */
  return buf->isGood();
2767}

2769//parts are the number of vertex to split polyline, default 128
2770void DRW_Ellipse::toPolyline(DRW_Polyline *pol, int parts){
  double radMajor, radMinor, cosRot, sinRot, incAngle, curAngle;
  double cosCurr, sinCurr;
radMajor = hypot(secPoint.x, secPoint.y);
  radMinor = radMajor*ratio;
  //calculate sin & cos of included angle
  incAngle = atan2(secPoint.y, secPoint.x);
  cosRot = cos(incAngle);
  sinRot = sin(incAngle);
  incAngle = M_PIx26.283185307179586 / parts;
  curAngle = staparam;
  int i = static_cast<int>(curAngle / incAngle);
  do {
      if (curAngle > endparam) {
          curAngle = endparam;
          i = parts+2;
      }
      cosCurr = cos(curAngle);
      sinCurr = sin(curAngle);
      double x = basePoint.x + (cosCurr*cosRot*radMajor) - (sinCurr*sinRot*radMinor);
      double y = basePoint.y + (cosCurr*sinRot*radMajor) + (sinCurr*cosRot*radMinor);
      pol->addVertex( DRW_Vertex(x, y, 0.0, 0.0));
      curAngle = (++i)*incAngle;
  } while (i<parts);
  if ( fabs(endparam - staparam - M_PIx26.283185307179586) < 1.0e-10){
      pol->flags = 1;
  }
  pol->layer = this->layer;
  pol->lineType = this->lineType;
  pol->color = this->color;
  pol->lWeight = this->lWeight;
  pol->extPoint = this->extPoint;
2802}

2804void DRW_Trace::applyExtrusion(){
  if (haveExtrusion) {
      calculateAxis(extPoint);
      extrudePoint(extPoint, &basePoint);
      extrudePoint(extPoint, &secPoint);
      extrudePoint(extPoint, &thirdPoint);
      extrudePoint(extPoint, &fourPoint);
  }
2812}

2814bool DRW_Trace::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 12:
      thirdPoint.x = reader->getDouble();
      break;
  case 22:
      thirdPoint.y = reader->getDouble();
      break;
  case 32:
      thirdPoint.z = reader->getDouble();
      break;
  case 13:
      fourPoint.x = reader->getDouble();
      break;
  case 23:
      fourPoint.y = reader->getDouble();
      break;
  case 33:
      fourPoint.z = reader->getDouble();
      break;
  default:
      return DRW_Line::parseCode(code, reader);
  }

  return true;
2839}

2841bool DRW_Trace::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing Trace *********************************************\n")DRW_dbg::dbg("\n***************************** parsing Trace *********************************************\n"
);

  thickness = buf->getThickness(version>DRW::AC1014);
  basePoint.z = buf->getBitDouble();
  basePoint.x = buf->getRawDouble();
  basePoint.y = buf->getRawDouble();
  secPoint.x = buf->getRawDouble();
  secPoint.y = buf->getRawDouble();
  secPoint.z = basePoint.z;
  thirdPoint.x = buf->getRawDouble();
  thirdPoint.y = buf->getRawDouble();
  thirdPoint.z = basePoint.z;
  fourPoint.x = buf->getRawDouble();
  fourPoint.y = buf->getRawDouble();
  fourPoint.z = basePoint.z;
  extPoint = buf->getExtrusion(version>DRW::AC1014);

  DRW_DBG(" - base ")DRW_dbg::dbg(" - base "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
  DRW_DBG("\n - sec ")DRW_dbg::dbg("\n - sec "); DRW_DBGPT(secPoint.x, secPoint.y, secPoint.z)DRW_dbg::dbgPT(secPoint.x, secPoint.y, secPoint.z);
  DRW_DBG("\n - third ")DRW_dbg::dbg("\n - third "); DRW_DBGPT(thirdPoint.x, thirdPoint.y, thirdPoint.z)DRW_dbg::dbgPT(thirdPoint.x, thirdPoint.y, thirdPoint.z);
  DRW_DBG("\n - fourth ")DRW_dbg::dbg("\n - fourth "); DRW_DBGPT(fourPoint.x, fourPoint.y, fourPoint.z)DRW_dbg::dbgPT(fourPoint.x, fourPoint.y, fourPoint.z);
  DRW_DBG("\n - extrusion: ")DRW_dbg::dbg("\n - extrusion: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z);
  DRW_DBG("\n - thickness: ")DRW_dbg::dbg("\n - thickness: "); DRW_DBG(thickness)DRW_dbg::dbg(thickness); DRW_DBG("\n")DRW_dbg::dbg("\n");

  /* Common Entity Handle Data */
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;

  /* CRC X --- */
  return buf->isGood();
2876}

2878bool DRW_Solid::parseDwg(DRW::Version v, dwgBuffer *buf, std::uint32_t bs){
  DRW_DBG("\n***************************** parsing Solid *********************************************\n")DRW_dbg::dbg("\n***************************** parsing Solid *********************************************\n"
);
  return DRW_Trace::parseDwg(v, buf, bs);
2881}

2883bool DRW_3Dface::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 70:
      invisibleflag = reader->getInt32();
      break;
  default:
      return DRW_Trace::parseCode(code, reader);
  }

  return true;
2893}

2895bool DRW_3Dface::parseDwg(DRW::Version v, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(v, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing 3Dface *********************************************\n")DRW_dbg::dbg("\n***************************** parsing 3Dface *********************************************\n"
);

  if ( v < DRW::AC1015 ) {// R13 & R14
      basePoint.x = buf->getBitDouble();
      basePoint.y = buf->getBitDouble();
      basePoint.z = buf->getBitDouble();
      secPoint.x = buf->getBitDouble();
      secPoint.y = buf->getBitDouble();
      secPoint.z = buf->getBitDouble();
      thirdPoint.x = buf->getBitDouble();
      thirdPoint.y = buf->getBitDouble();
      thirdPoint.z = buf->getBitDouble();
      fourPoint.x = buf->getBitDouble();
      fourPoint.y = buf->getBitDouble();
      fourPoint.z = buf->getBitDouble();
      invisibleflag = buf->getBitShort();
  } else { // 2000+
      bool has_no_flag = buf->getBit();
      bool z_is_zero = buf->getBit();
      basePoint.x = buf->getRawDouble();
      basePoint.y = buf->getRawDouble();
      basePoint.z = z_is_zero ? 0.0 : buf->getRawDouble();
      secPoint.x = buf->getDefaultDouble(basePoint.x);
      secPoint.y = buf->getDefaultDouble(basePoint.y);
      secPoint.z = buf->getDefaultDouble(basePoint.z);
      thirdPoint.x = buf->getDefaultDouble(secPoint.x);
      thirdPoint.y = buf->getDefaultDouble(secPoint.y);
      thirdPoint.z = buf->getDefaultDouble(secPoint.z);
      fourPoint.x = buf->getDefaultDouble(thirdPoint.x);
      fourPoint.y = buf->getDefaultDouble(thirdPoint.y);
      fourPoint.z = buf->getDefaultDouble(thirdPoint.z);
      invisibleflag = has_no_flag ? (int)NoEdge : buf->getBitShort();
  }
  drw_assert(invisibleflag>=NoEdge);
  drw_assert(invisibleflag<=AllEdges);

  DRW_DBG(" - base ")DRW_dbg::dbg(" - base "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG(" - sec ")DRW_dbg::dbg(" - sec "); DRW_DBGPT(secPoint.x, secPoint.y, secPoint.z)DRW_dbg::dbgPT(secPoint.x, secPoint.y, secPoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG(" - third ")DRW_dbg::dbg(" - third "); DRW_DBGPT(thirdPoint.x, thirdPoint.y, thirdPoint.z)DRW_dbg::dbgPT(thirdPoint.x, thirdPoint.y, thirdPoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG(" - fourth ")DRW_dbg::dbg(" - fourth "); DRW_DBGPT(fourPoint.x, fourPoint.y, fourPoint.z)DRW_dbg::dbgPT(fourPoint.x, fourPoint.y, fourPoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG(" - Invisibility mask: ")DRW_dbg::dbg(" - Invisibility mask: "); DRW_DBG(invisibleflag)DRW_dbg::dbg(invisibleflag); DRW_DBG("\n")DRW_dbg::dbg("\n");

  /* Common Entity Handle Data */
  ret = DRW_Entity::parseDwgEntHandle(v, buf);
  if (!ret)
      return ret;
  return buf->isGood();
2946}

2948bool DRW_ModelerGeometry::parseDwg(DRW::Version v, dwgBuffer *buf, std::uint32_t bs){
  m_bodyBitSize = bs;
  bool ret = DRW_Entity::parseDwg(v, buf, nullptr, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing modeler geometry ******************\n")DRW_dbg::dbg("\n***************************** parsing modeler geometry ******************\n"
);

  m_isEmpty = buf->getBit() != 0;
  m_hasModelerData = !m_isEmpty;
  m_modelerDataUnknownBit = buf->getBit() != 0;
  if (m_hasModelerData)
      m_modelerVersion = buf->getBitShort();

  ret = DRW_Entity::parseDwgEntHandle(v, buf);
  if (eType == DRW::E3DSOLID && v > DRW::AC1018 && buf->numRemainingBytes() > 2) {
      dwgHandle historyH = buf->getHandle();
      m_historyHandle = historyH.ref;
      DRW_DBG(" 3DSOLID history Handle: ")DRW_dbg::dbg(" 3DSOLID history Handle: ");
      DRW_DBGHL(historyH.code, historyH.size, historyH.ref)DRW_dbg::dbgHL(historyH.code, historyH.size, historyH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }

  return ret;
2970}

2972bool DRW_ModelerGeometry::parseCode(int code, const std::unique_ptr<dxfReader>& reader) {
  switch (code) {
  case 1:
  case 3:
      appendTextBytes(m_rawBytes, reader->getString());
      break;
  case 70:
      m_modelerVersion = static_cast<std::uint16_t>(reader->getInt32());
      break;
  case 350:
  case 360:
      m_historyHandle = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  case 310:
      {
          std::vector<std::uint8_t> decoded;
          if (!decodeHexBytes(reader->getString(), decoded))
              return false;
          appendBytes(m_rawBytes, decoded);
      }
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }
  return true;
2997}

2999// DRW_Mesh::parseDwg — AcDbSubDMesh, field order per libreDWG dwg2.spec:2523
3000// (DWG bitstream order, NOT the DXF group-code order). R2010+ only in practice
3001// (the custom-class dispatch only fires when classesmap names "MESH").
3002bool DRW_Mesh::parseDwg(DRW::Version v, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(v, buf, nullptr, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing MESH (AcDbSubDMesh) *****************\n")DRW_dbg::dbg("\n***************************** parsing MESH (AcDbSubDMesh) *****************\n"
);

  // Loose OOM/corruption guard: a count can't exceed the bits left in the
  // object (each item is >= 1 bit; crease/face values are bit-packed and may be
  // far below 1 byte each, so a per-byte bound would falsely reject valid data).
  auto sane = [&](std::int32_t n) {
      return n >= 0
          && static_cast<std::int64_t>(n)
                 <= static_cast<std::int64_t>(buf->numRemainingBytes()) * 8 + 8;
  };

  version     = buf->getBitShort();        // BS dlevel (71)
  blendCrease = buf->getBit() != 0;        // B is_watertight (72)

  const std::int32_t nSubdiv = buf->getBitLong();   // BL num_subdiv_vertex (91)
  if (!sane(nSubdiv)) return false;
  subdivisionLevel = nSubdiv;
  subdivVertices.reserve(static_cast<size_t>(nSubdiv));
  for (std::int32_t i = 0; i < nSubdiv && buf->isGood(); ++i)
      subdivVertices.push_back(buf->get3BitDouble());

  const std::int32_t nVert = buf->getBitLong();     // BL num_vertex (92)
  if (!sane(nVert)) return false;
  vertices.reserve(static_cast<size_t>(nVert));
  for (std::int32_t i = 0; i < nVert && buf->isGood(); ++i)
      vertices.push_back(buf->get3BitDouble());

  // faces (93) is a FLAT BL stream of length num_faces; each face is
  // [count, idx0, idx1, ...]. num_faces is the stream length, not the polygon
  // count — group on the fly.
  std::int32_t remaining = buf->getBitLong();       // BL num_faces (93)
  if (!sane(remaining)) return false;
  while (remaining > 0 && buf->isGood()) {
      const std::int32_t cnt = buf->getBitLong();
      --remaining;
      if (cnt < 0 || cnt > remaining)
          break;  // corrupt face run
      std::vector<std::int32_t> face;
      face.reserve(static_cast<size_t>(cnt));
      for (std::int32_t j = 0; j < cnt && buf->isGood(); ++j) {
          face.push_back(buf->getBitLong());
          --remaining;
      }
      faces.push_back(std::move(face));
  }

  const std::int32_t nEdges = buf->getBitLong();    // BL num_edges (94)
  if (!sane(nEdges)) return false;
  edges.reserve(static_cast<size_t>(nEdges));
  for (std::int32_t i = 0; i < nEdges && buf->isGood(); ++i) {
      const std::int32_t from = buf->getBitLong();
      const std::int32_t to   = buf->getBitLong();
      edges.emplace_back(from, to);
  }

  const std::int32_t nCrease = buf->getBitLong();   // BL num_crease (95)
  if (!sane(nCrease)) return false;
  creases.reserve(static_cast<size_t>(nCrease));
  for (std::int32_t i = 0; i < nCrease && buf->isGood(); ++i)
      creases.push_back(buf->getBitDouble());

  buf->getBit();  // unknown_b1
  buf->getBit();  // unknown_b2

  ret = DRW_Entity::parseDwgEntHandle(v, buf);
  return ret;
3072}

3074// DRW_Mesh::parseCode — DXF read (codes 71/72/91/92/10·20·30/93/90/94/95/140).
3075// The 90 stream is shared by faces (after 93) and edges (after 94); m_dxfState
3076// sequences which one is being filled (mirrors DRW_Image::parseCode's stateful
3077// 91/14/24 WIPEOUT-vertex accumulation).
3078bool DRW_Mesh::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 71: version = reader->getInt32(); return true;
  case 72: blendCrease = reader->getInt32() != 0; return true;
  case 91: subdivisionLevel = reader->getInt32(); return true;
  case 92: /* base-vertex count */ vertices.reserve(reader->getInt32()); return true;
  case 10: vertices.emplace_back(); vertices.back().x = reader->getDouble(); return true;
  case 20: if (!vertices.empty()) vertices.back().y = reader->getDouble(); return true;
  case 30: if (!vertices.empty()) vertices.back().z = reader->getDouble(); return true;
  case 93: m_dxfState = 93; m_dxfPending = 0; return true;  // start face stream
  case 94: m_dxfState = 94; m_dxfEdgeFrom = -1; (void)reader->getInt32(); return true;  // edge count
  case 90: {
      const std::int32_t val = reader->getInt32();
      if (m_dxfState == 93) {
          // flat face stream: when no face is in progress, val is the next
          // face's vertex count; otherwise val is a vertex index.
          if (m_dxfPending == 0) {
              faces.emplace_back();
              m_dxfPending = (val > 0) ? val : 0;
          } else {
              if (!faces.empty()) faces.back().push_back(val);
              --m_dxfPending;
          }
      } else if (m_dxfState == 94) {
          if (m_dxfEdgeFrom < 0) m_dxfEdgeFrom = val;
          else { edges.emplace_back(m_dxfEdgeFrom, val); m_dxfEdgeFrom = -1; }
      }
      return true;
  }
  case 95: m_dxfState = 95; creases.reserve(static_cast<size_t>(std::max(0, reader->getInt32()))); return true;
  case 140: creases.push_back(reader->getDouble()); return true;
  default:
      return DRW_Entity::parseCode(code, reader);
  }
3112}

3114bool DRW_Mesh::encodeDwg(DRW::Version dwgVersion, dwgBufferW *buf, std::uint32_t bs,
                       dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = kDwgClassNum;
  if (!encodeDwgCommon(dwgVersion, buf)) return false;

  buf->putBitShort(version);
  buf->putBit(blendCrease ? 1 : 0);

  // DWG stores a subdiv-vertex vector in the slot that DXF exposes as group
  // 91 subdivision level.  Preserve the vector exactly; DXF write keeps the
  // public subdivisionLevel field.
  buf->putBitLong(static_cast<std::int32_t>(subdivVertices.size()));
  for (const DRW_Coord& vertex : subdivVertices)
      buf->put3BitDouble(vertex);

  buf->putBitLong(static_cast<std::int32_t>(vertices.size()));
  for (const DRW_Coord& vertex : vertices)
      buf->put3BitDouble(vertex);

  std::int32_t faceStreamCount = 0;
  for (const auto& face : faces)
      faceStreamCount += static_cast<std::int32_t>(face.size() + 1);
  buf->putBitLong(faceStreamCount);
  for (const auto& face : faces) {
      buf->putBitLong(static_cast<std::int32_t>(face.size()));
      for (std::int32_t index : face)
          buf->putBitLong(index);
  }

  buf->putBitLong(static_cast<std::int32_t>(edges.size()));
  for (const auto& edge : edges) {
      buf->putBitLong(edge.first);
      buf->putBitLong(edge.second);
  }

  buf->putBitLong(static_cast<std::int32_t>(creases.size()));
  for (double crease : creases)
      buf->putBitDouble(crease);

  buf->putBit(0);
  buf->putBit(0);

  return encodeDwgEntHandle(dwgVersion, buf, handleBuf);
3158}

3160bool DRW_Shape::parseDwg(DRW::Version v, dwgBuffer *buf, std::uint32_t bs){
  m_bodyBitSize = bs;
  bool ret = DRW_Entity::parseDwg(v, buf, nullptr, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing SHAPE *****************************\n")DRW_dbg::dbg("\n***************************** parsing SHAPE *****************************\n"
);

  m_insertionPoint = buf->get3BitDouble();
  m_scale = buf->getBitDouble();
  m_rotation = buf->getBitDouble();
  m_widthFactor = buf->getBitDouble();
  m_oblique = buf->getBitDouble();
  m_thickness = buf->getBitDouble();
  m_shapeIndex = buf->getBitShort();
  m_extrusion = buf->get3BitDouble();

  ret = DRW_Entity::parseDwgEntHandle(v, buf);
  if (ret && buf->numRemainingBytes() > 2) {
      dwgHandle shapeFileH = buf->getHandle();
      m_shapeFileHandle = shapeFileH.ref;
      DRW_DBG(" SHAPEFILE Handle: ")DRW_dbg::dbg(" SHAPEFILE Handle: ");
      DRW_DBGHL(shapeFileH.code, shapeFileH.size, shapeFileH.ref)DRW_dbg::dbgHL(shapeFileH.code, shapeFileH.size, shapeFileH.ref
);
      DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  return ret && buf->isGood();
3185}

3187// Phase 6.1: SHAPE encoder (fixed oType 33). Exact inverse of parseDwg above.
3188// Without this override a SHAPE would encode as a LINE (default DRW_Entity).
3189bool DRW_Shape::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                        dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 33;  // SHAPE class id — see dwgreader.cpp case 33
  if (!encodeDwgCommon(version, buf)) return false;

  buf->put3BitDouble(m_insertionPoint);
  buf->putBitDouble(m_scale);
  buf->putBitDouble(m_rotation);
  buf->putBitDouble(m_widthFactor);
  buf->putBitDouble(m_oblique);
  buf->putBitDouble(m_thickness);
  buf->putBitShort(m_shapeIndex);
  buf->put3BitDouble(m_extrusion);

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  // Trailing SHAPEFILE style hard pointer (code 5), byte-count-sized.
  dwgHandle sH;
  sH.code = 5;
  sH.ref  = m_shapeFileHandle;
  sH.size = 0;
  if (m_shapeFileHandle != 0) {
      std::uint32_t t = m_shapeFileHandle;
      while (t != 0) { t >>= 8; ++sH.size; }
  } else {
      sH.code = 0;  // null handle
  }
  (handleBuf ? handleBuf : buf)->putHandle(sH);
  return true;
3219}

3221bool DRW_Ole2Frame::parseDwg(DRW::Version v, dwgBuffer *buf, std::uint32_t bs){
  m_bodyBitSize = bs;
  bool ret = DRW_Entity::parseDwg(v, buf, nullptr, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing OLE2FRAME ************************\n")DRW_dbg::dbg("\n***************************** parsing OLE2FRAME ************************\n"
);

  m_flags = buf->getBitShort();
  if (v > DRW::AC1014)
      m_mode = buf->getBitShort();
  m_declaredPayloadLength = buf->getBitLong();
  m_payloadStartBit = currentDwgBit(buf);
  const std::uint64_t currentBit = currentDwgBit(buf);
  const std::uint64_t bodyRemainingBits =
      (v > DRW::AC1018 && objSize > currentBit)
          ? objSize - currentBit
          : static_cast<std::uint64_t>(buf->numRemainingBytes()) * 8u;
  const std::uint32_t remainingBytes =
      static_cast<std::uint32_t>(std::min<std::uint64_t>(
          bodyRemainingBits / 8u,
          static_cast<std::uint64_t>(std::numeric_limits<std::uint32_t>::max())));
  if (m_declaredPayloadLength > kMaxOlePayloadBytes) {
      m_payloadTooLarge = true;
      return false;
  }
  if (m_declaredPayloadLength > remainingBytes) {  // remainingBytes is already uint32
      m_payloadTruncated = true;
      m_payloadByteCount = remainingBytes;
      return false;
  }

  m_payloadPresent = m_declaredPayloadLength > 0;
  m_payloadByteCount = m_declaredPayloadLength;
  // Phase 6.2: capture the opaque payload bytes (was skipped via moveBitPos)
  // so the OLE2FRAME encoder can re-emit them byte-for-byte.
  if (m_declaredPayloadLength > 0) {
      m_payloadBytes.resize(m_declaredPayloadLength);
      if (!buf->getBytes(m_payloadBytes.data(), m_declaredPayloadLength)) {
          m_payloadTruncated = true;
          m_payloadBytes.clear();
          return false;
      }
  }

  if (v > DRW::AC1014 && buf->numRemainingBytes() > 0) {
      m_hasR2000TrailingByte = true;
      m_r2000TrailingByte = buf->getRawChar8();
  }

  // Decode the frame rectangle (DXF 10/11) from the OLE header. AutoCAD/ODA do
  // NOT store pt1/pt2 as DWG fields; they live in the first ~0x80 bytes of the
  // payload as raw little-endian doubles. (libredwg's dwg_decode_ole2 is a stub
  // that hardcodes one sample file's corners.) Layout reverse-engineered and
  // validated on TS1 + Extruder2: byte 0x00 == 0x80 marker; upper-left @0x02,
  // lower-right @0x32, 3 doubles each. Guarded so a non-finite/short payload
  // simply leaves pt1/pt2 at the origin (payload still preserved).
  if (m_payloadBytes.size() >= 0x4a && m_payloadBytes[0] == 0x80) {
      auto rd = [&](std::size_t off) {
          double d = 0.0;
          std::memcpy(&d, m_payloadBytes.data() + off, sizeof(double));
          return d;
      };
      DRW_Coord ul(rd(0x02), rd(0x0a), rd(0x12));
      DRW_Coord lr(rd(0x32), rd(0x3a), rd(0x42));
      if (std::isfinite(ul.x) && std::isfinite(ul.y) && std::isfinite(ul.z)
          && std::isfinite(lr.x) && std::isfinite(lr.y) && std::isfinite(lr.z)) {
          m_pt1 = ul;
          m_pt2 = lr;
      }
  }

  ret = DRW_Entity::parseDwgEntHandle(v, buf);
  return ret && buf->isGood();
3294}

3296// Phase 6.2: OLE2FRAME encoder (fixed oType 74). Inverse of parseDwg, emitting
3297// the captured opaque payload byte-for-byte. Without this override an OLE2FRAME
3298// would encode as a LINE.
3299bool DRW_Ole2Frame::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                            dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 74;  // OLE2FRAME class id — see dwgreader.cpp case 74
  if (!encodeDwgCommon(version, buf)) return false;

  buf->putBitShort(m_flags);
  if (version > DRW::AC1014)
      buf->putBitShort(m_mode);
  // Emit the actual captured length so the reader's data_size matches the
  // bytes that follow (avoids a declared-vs-actual mismatch on re-read).
  const std::uint32_t payloadLen = static_cast<std::uint32_t>(m_payloadBytes.size());
  buf->putBitLong(static_cast<std::int32_t>(payloadLen));
  if (payloadLen > 0)
      buf->putBytes(m_payloadBytes.data(), m_payloadBytes.size());
  // R2000+ Unknown RC (ODA §20.4.88): emitted UNCONDITIONALLY for version >
  // AC1014. parseDwg reads it whenever bytes remain before the handle stream
  // (which is always — handle data always follows), so gating the write on
  // m_hasR2000TrailingByte desynced a directly-constructed OLE2FRAME (the
  // default false): the parser consumed the first handle byte as this RC and
  // shifted the entity handle stream. Default m_r2000TrailingByte is 0, so
  // constructed entities align and round-tripped ones keep the captured byte.
  if (version > DRW::AC1014)
      buf->putRawChar8(m_r2000TrailingByte);

  return encodeDwgEntHandle(version, buf, handleBuf);
3325}

3327bool DRW_Light::parseDwg(DRW::Version v, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = v > DRW::AC1018 ? &sBuff : buf;
  bool ret = DRW_Entity::parseDwg(v, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing LIGHT *****************************\n")DRW_dbg::dbg("\n***************************** parsing LIGHT *****************************\n"
);

  const std::uint64_t bodyDataEndBit = v > DRW::AC1018 ? currentDwgBit(sBuf) : 0;
  m_classVersion = static_cast<std::uint32_t>(buf->getBitLong());
  m_name = sBuf->getVariableText(v, false);
  m_type = static_cast<std::uint32_t>(buf->getBitLong());
  m_status = buf->getBit() != 0;
  m_color = buf->getCmColor(v);
  m_plotGlyph = buf->getBit() != 0;
  m_intensity = buf->getBitDouble();
  m_position = buf->get3BitDouble();
  m_target = buf->get3BitDouble();
  m_attenuationType = static_cast<std::uint32_t>(buf->getBitLong());
  m_useAttenuationLimits = buf->getBit() != 0;
  m_attenuationStartLimit = buf->getBitDouble();
  m_attenuationEndLimit = buf->getBitDouble();
  m_hotspotAngle = buf->getBitDouble();
  m_falloffAngle = buf->getBitDouble();
  m_castShadows = buf->getBit() != 0;
  m_shadowType = static_cast<std::uint32_t>(buf->getBitLong());
  m_shadowMapSize = buf->getBitShort();
  m_shadowMapSoftness = buf->getRawChar8();

  if (v > DRW::AC1018 && currentDwgBit(buf) < bodyDataEndBit) {
      m_hasPhotometricData = buf->getBit() != 0;
      if (m_hasPhotometricData) {
          m_hasWebFile = buf->getBit() != 0;
          m_webFile = sBuf->getVariableText(v, false);
          m_physicalIntensityMethod = buf->getBitShort();
          m_physicalIntensity = buf->getBitDouble();
          m_illuminanceDistance = buf->getBitDouble();
          m_lampColorType = buf->getBitShort();
          m_lampColorTemperature = buf->getBitDouble();
          m_lampColorPreset = buf->getBitShort();
          m_webRotation = buf->get3BitDouble();
          m_extendedLightShape = buf->getBitShort();
          m_extendedLightLength = buf->getBitDouble();
          m_extendedLightWidth = buf->getBitDouble();
          m_extendedLightRadius = buf->getBitDouble();
      }
  }

  ret = DRW_Entity::parseDwgEntHandle(v, buf);
  DRW_DBG("LIGHT name: ")DRW_dbg::dbg("LIGHT name: "); DRW_DBG(m_name.c_str())DRW_dbg::dbg(m_name.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  return ret;
3378}

3380bool DRW_Light::encodeDwg(DRW::Version v, dwgBufferW *buf, std::uint32_t bs,
                        dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  if (v < DRW::AC1021)
      return false;

  oType = kDwgClassNum;
  if (!encodeDwgCommon(v, buf, strBuf))
      return false;

  dwgBufferW *sb = strBuf ? strBuf : buf;
  buf->putBitLong(m_classVersion);
  sb->putVariableText(v, m_name);
  buf->putBitLong(m_type);
  buf->putBit(m_status ? 1 : 0);
  buf->putCmColor(v, static_cast<std::uint16_t>(m_color));
  buf->putBit(m_plotGlyph ? 1 : 0);
  buf->putBitDouble(m_intensity);
  buf->put3BitDouble(m_position);
  buf->put3BitDouble(m_target);
  buf->putBitLong(m_attenuationType);
  buf->putBit(m_useAttenuationLimits ? 1 : 0);
  buf->putBitDouble(m_attenuationStartLimit);
  buf->putBitDouble(m_attenuationEndLimit);
  buf->putBitDouble(m_hotspotAngle);
  buf->putBitDouble(m_falloffAngle);
  buf->putBit(m_castShadows ? 1 : 0);
  buf->putBitLong(m_shadowType);
  buf->putBitShort(m_shadowMapSize);
  buf->putRawChar8(m_shadowMapSoftness);

  buf->putBit(m_hasPhotometricData ? 1 : 0);
  if (m_hasPhotometricData) {
      buf->putBit(m_hasWebFile ? 1 : 0);
      sb->putVariableText(v, m_webFile);
      buf->putBitShort(m_physicalIntensityMethod);
      buf->putBitDouble(m_physicalIntensity);
      buf->putBitDouble(m_illuminanceDistance);
      buf->putBitShort(m_lampColorType);
      buf->putBitDouble(m_lampColorTemperature);
      buf->putBitShort(m_lampColorPreset);
      buf->put3BitDouble(m_webRotation);
      buf->putBitShort(m_extendedLightShape);
      buf->putBitDouble(m_extendedLightLength);
      buf->putBitDouble(m_extendedLightWidth);
      buf->putBitDouble(m_extendedLightRadius);
  }

  return encodeDwgEntHandle(v, buf, handleBuf);
3429}

3431// DRW_Section::parseDwg — SECTIONOBJECT / AcDbSection, field order per
3432// libreDWG dwg2.spec DWG_ENTITY(SECTIONOBJECT): BL state, BL flags, T name,
3433// 3BD vert_dir, BD top/bottom height, BS indicator_alpha, CMTC indicator_color,
3434// BL num_verts + verts, BL num_blverts + blverts; then the common entity handle
3435// data followed by the section_settings hard reference (H 5, 360).
3436bool DRW_SectionObject::parseDwg(DRW::Version v, dwgBuffer *buf, std::uint32_t bs){
  // R2007+ keeps text in a separate string stream; read scalars from buf
  // (data stream) and text from sBuf, exactly like DRW_Light.
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = v > DRW::AC1018 ? &sBuff : buf;
  bool ret = DRW_Entity::parseDwg(v, buf, sBuf, bs);
  if (!ret)
      return true;  // graceful-degrade: keep the raw shelf
  DRW_DBG("\n***************************** parsing SECTIONOBJECT *********************\n")DRW_dbg::dbg("\n***************************** parsing SECTIONOBJECT *********************\n"
);

  m_state = static_cast<std::uint32_t>(buf->getBitLong());
  m_flags = static_cast<std::uint32_t>(buf->getBitLong());
  m_name = sBuf->getVariableText(v, false);
  m_vertDir = buf->get3BitDouble();
  m_topHeight = buf->getBitDouble();
  m_bottomHeight = buf->getBitDouble();
  m_indicatorAlpha = buf->getBitShort();
  m_indicatorColor = buf->getCmColor(v);

  // num_verts / num_blverts are bounded before looping — a corrupt count must
  // never drive an unbounded allocation, and a short read must never drop the
  // object (raw shelf is the round-trip floor).
  constexpr std::uint32_t kMaxSectionVerts = 1u << 20;  // 1,048,576
  std::int32_t nv = buf->getBitLong();
  std::uint32_t numVerts = (nv > 0) ? static_cast<std::uint32_t>(nv) : 0u;
  if (numVerts > kMaxSectionVerts)
      numVerts = 0;
  m_verts.clear();
  m_verts.reserve(numVerts);
  for (std::uint32_t i = 0; i < numVerts && buf->isGood(); ++i)
      m_verts.push_back(buf->get3BitDouble());

  std::int32_t nb = buf->getBitLong();
  std::uint32_t numBl = (nb > 0) ? static_cast<std::uint32_t>(nb) : 0u;
  if (numBl > kMaxSectionVerts)
      numBl = 0;
  m_blVerts.clear();
  m_blVerts.reserve(numBl);
  for (std::uint32_t i = 0; i < numBl && buf->isGood(); ++i)
      m_blVerts.push_back(buf->get3BitDouble());

  // Handle stream: parseDwgEntHandle reads the common entity handles — it
  // resets buf to objSize for R2007+ and reads inline (after the exact body
  // above) for <=AC1018. The section_settings hard reference follows the
  // common handles, so read it from buf right after (guarded by remaining
  // bytes so a truncated object never over-reads).
  ret = DRW_Entity::parseDwgEntHandle(v, buf);
  // The section_settings hard reference follows the common entity handles.
  // The R2007+ handle stream is small (a few bytes) so guard on any
  // remaining byte rather than the 4-byte common-object slack.
  if (ret && buf->isGood() && buf->numRemainingBytes() >= 1) {
      dwgHandle ssH = buf->getOffsetHandle(handle);
      m_sectionSettingsHandle = ssH.ref;
      DRW_DBG(" section_settings Handle: ")DRW_dbg::dbg(" section_settings Handle: ");
      DRW_DBGHL(ssH.code, ssH.size, ssH.ref)DRW_dbg::dbgHL(ssH.code, ssH.size, ssH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  DRW_DBG("SECTIONOBJECT name: ")DRW_dbg::dbg("SECTIONOBJECT name: "); DRW_DBG(m_name.c_str())DRW_dbg::dbg(m_name.c_str());
  DRW_DBG(" verts: ")DRW_dbg::dbg(" verts: "); DRW_DBG(static_cast<int>(m_verts.size()))DRW_dbg::dbg(static_cast<int>(m_verts.size())); DRW_DBG("\n")DRW_dbg::dbg("\n");
  return true;  // graceful-degrade — always deliver typed add + raw shelf
3495}

3497bool DRW_Tolerance::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 1:
      text = reader->getUtf8String();
      break;
  case 3:
      dimStyleName = reader->getUtf8String();
      break;
  case 10:
      insertionPoint.x = reader->getDouble();
      break;
  case 20:
      insertionPoint.y = reader->getDouble();
      break;
  case 30:
      insertionPoint.z = reader->getDouble();
      break;
  case 11:
      xAxisDirectionVector.x = reader->getDouble();
      break;
  case 21:
      xAxisDirectionVector.y = reader->getDouble();
      break;
  case 31:
      xAxisDirectionVector.z = reader->getDouble();
      break;
  case 210:
      extPoint.x = reader->getDouble();
      break;
  case 220:
      extPoint.y = reader->getDouble();
      break;
  case 230:
      extPoint.z = reader->getDouble();
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }
  return true;
3536}

3538bool DRW_Tolerance::parseDwg(DRW::Version v, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (v > DRW::AC1018)
      sBuf = &sBuff;

  bool ret = DRW_Entity::parseDwg(v, buf, sBuf, bs);
  if (!ret)
      return ret;

  DRW_DBG("\n***************************** parsing tolerance *********************************************\n")DRW_dbg::dbg("\n***************************** parsing tolerance *********************************************\n"
);
  if (v < DRW::AC1015) {
      DRW_DBG("unknown R13/R14 short: ")DRW_dbg::dbg("unknown R13/R14 short: "); DRW_DBG(buf->getBitShort())DRW_dbg::dbg(buf->getBitShort()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("height at creation: ")DRW_dbg::dbg("height at creation: "); DRW_DBG(buf->getBitDouble())DRW_dbg::dbg(buf->getBitDouble()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("dimgap/dimscale at creation: ")DRW_dbg::dbg("dimgap/dimscale at creation: "); DRW_DBG(buf->getBitDouble())DRW_dbg::dbg(buf->getBitDouble()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }

  insertionPoint = buf->get3BitDouble();
  DRW_DBG("insertionPoint: ")DRW_dbg::dbg("insertionPoint: "); DRW_DBGPT(insertionPoint.x, insertionPoint.y, insertionPoint.z)DRW_dbg::dbgPT(insertionPoint.x, insertionPoint.y, insertionPoint
.z);
  xAxisDirectionVector = buf->get3BitDouble();
  DRW_DBG("\nxAxisDirectionVector: ")DRW_dbg::dbg("\nxAxisDirectionVector: ");
  DRW_DBGPT(xAxisDirectionVector.x, xAxisDirectionVector.y, xAxisDirectionVector.z)DRW_dbg::dbgPT(xAxisDirectionVector.x, xAxisDirectionVector.y
, xAxisDirectionVector.z);
  extPoint = buf->get3BitDouble();
  DRW_DBG("\nextPoint: ")DRW_dbg::dbg("\nextPoint: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z);
  text = sBuf->getVariableText(v, false);
  DRW_DBG("\ntolerance text: ")DRW_dbg::dbg("\ntolerance text: "); DRW_DBG(text.c_str())DRW_dbg::dbg(text.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  ret = DRW_Entity::parseDwgEntHandle(v, buf);
  if (!ret)
      return ret;
  dimStyleH = buf->getHandle();
  DRW_DBG("dim style Handle: ")DRW_dbg::dbg("dim style Handle: ");
  DRW_DBGHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref)DRW_dbg::dbgHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  return buf->isGood();
3572}

3574bool DRW_Tolerance::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                            dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 46;
  if (!encodeDwgCommon(version, buf, strBuf))
      return false;

  if (version < DRW::AC1015) {
      buf->putBitShort(0);
      buf->putBitDouble(0.0);
      buf->putBitDouble(0.0);
  }

  buf->put3BitDouble(insertionPoint);
  buf->put3BitDouble(xAxisDirectionVector);
  buf->put3BitDouble(extPoint);
  (strBuf ? strBuf : buf)->putVariableText(version, text);

  if (!encodeDwgEntHandle(version, buf, handleBuf))
      return false;

  dwgBufferW *hb = handleBuf ? handleBuf : buf;
  putHardPointerHandle(hb, (dimStyleH.ref == 0) ? 0x15 : dimStyleH.ref);
  return true;
3598}

3600bool DRW_Block::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 1:
      xrefPath = reader->getUtf8String();
      break;
  case 2:
      name = reader->getUtf8String();
      break;
  case 70:
      flags = reader->getInt32();
      break;
  default:
      return DRW_Point::parseCode(code, reader);
  }

  return true;
3616}

3618bool DRW_Block::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018) {//2007+
      sBuf = &sBuff; //separate buffer for strings
  }
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  if (!isEnd){
      DRW_DBG("\n***************************** parsing block *********************************************\n")DRW_dbg::dbg("\n***************************** parsing block *********************************************\n"
);
      name = sBuf->getVariableText(version, false);
      DRW_DBG("Block name: ")DRW_dbg::dbg("Block name: "); DRW_DBG(name.c_str())DRW_dbg::dbg(name.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  } else {
      DRW_DBG("\n***************************** parsing end block *********************************************\n")DRW_dbg::dbg("\n***************************** parsing end block *********************************************\n"
);
  }
  if (version > DRW::AC1018) {//2007+
      std::uint8_t unk = buf->getBit();
      DRW_DBG("unknown bit: ")DRW_dbg::dbg("unknown bit: "); DRW_DBG(unk)DRW_dbg::dbg(unk); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
3638//    X handleAssoc;   //X
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
3642//    RS crc;   //RS */
  return buf->isGood();
3644}

3646bool DRW_Insert::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 2:
      name = reader->getUtf8String();
      break;
  case 41:
      xscale = reader->getDouble();
      break;
  case 42:
      yscale = reader->getDouble();
      break;
  case 43:
      zscale = reader->getDouble();
      break;
  case 50:
      angle = reader->getDouble();
      angle = angle/ARAD57.29577951308232; //convert to radian
      break;
  case 70:
      colcount = reader->getInt32();
      break;
  case 71:
      rowcount = reader->getInt32();
      break;
  case 44:
      colspace = reader->getDouble();
      break;
  case 45:
      rowspace = reader->getDouble();
      break;
  default:
      return DRW_Point::parseCode(code, reader);
  }

  return true;
3681}

3683bool DRW_Table::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  auto ensureGrid = [this]() {
      if (m_dxfRowsExpected < 0 || m_dxfColumnsExpected < 0)
          return;

      const std::uint32_t rows = static_cast<std::uint32_t>(m_dxfRowsExpected);
      const std::uint32_t columns = static_cast<std::uint32_t>(m_dxfColumnsExpected);
      if (rows > kMaxTableRows || columns > kMaxTableColumns
          || (columns != 0 && rows > kMaxTableCells / columns)) {
          return;
      }

      if (m_content.m_columns.size() != columns) {
          m_content.m_columns.clear();
          m_content.m_columns.resize(columns);
          m_dxfColumnWidthsRead = 0;
      }
      if (m_content.m_rows.size() != rows) {
          m_content.m_rows.clear();
          m_content.m_rows.resize(rows);
          m_dxfRowHeightsRead = 0;
      }
      for (auto& row : m_content.m_rows)
          row.m_cells.resize(columns);

      m_hasSemanticContent = true;
      m_semanticContentComplete = true;
  };

  auto currentCell = [this]() -> DRW_TableCell* {
      if (m_dxfCurrentCell < 0 || m_content.m_columns.empty()
          || m_content.m_rows.empty()) {
          return nullptr;
      }

      const std::size_t columns = m_content.m_columns.size();
      const std::size_t cell = static_cast<std::size_t>(m_dxfCurrentCell);
      const std::size_t row = cell / columns;
      const std::size_t column = cell % columns;
      if (row >= m_content.m_rows.size()
          || column >= m_content.m_rows[row].m_cells.size()) {
          return nullptr;
      }
      return &m_content.m_rows[row].m_cells[column];
  };

  auto currentContent = [&currentCell]() -> DRW_TableCellContent* {
      DRW_TableCell *cell = currentCell();
      if (cell == nullptr)
          return nullptr;
      if (cell->m_contents.empty() || cell->m_contents.back().m_type != 1) {
          DRW_TableCellContent content;
          content.m_type = 1;
          cell->m_contents.push_back(content);
      }
      return &cell->m_contents.back();
  };

  if (code == 100) {
      const std::string subclass = reader->getString();
      if (subclass == "AcDbBlockReference") {
          m_dxfSubclass = DxfSubclass::BlockReference;
      } else if (subclass == "AcDbTable") {
          m_dxfSubclass = DxfSubclass::Table;
      } else if (subclass == "AcDbEntity") {
          m_dxfSubclass = DxfSubclass::Entity;
      }
      return true;
  }

  if (m_dxfSubclass != DxfSubclass::Table)
      return DRW_Insert::parseCode(code, reader);

  switch (code) {
  case 342:
      m_tableStyleHandle = static_cast<std::uint32_t>(reader->getHandleString());
      m_content.m_tableStyleHandle = m_tableStyleHandle;
      break;
  case 343:
      reader->getHandleString();
      break;
  case 11:
      m_horizontalDirection.x = reader->getDouble();
      break;
  case 21:
      m_horizontalDirection.y = reader->getDouble();
      break;
  case 31:
      m_horizontalDirection.z = reader->getDouble();
      break;
  case 90:
      if (m_dxfInCellValue) {
          if (DRW_TableCellContent *content = currentContent())
              content->m_value.m_dataType = reader->getInt32();
          else
              reader->getInt32();
      } else {
          m_valueFlag = reader->getInt32();
      }
      break;
  case 91:
      if (m_dxfRowsExpected < 0 && !m_dxfInCellValue) {
          m_dxfRowsExpected = reader->getInt32();
          ensureGrid();
      } else {
          reader->getInt32();
      }
      break;
  case 92:
      if (m_dxfColumnsExpected < 0 && !m_dxfInCellValue) {
          m_dxfColumnsExpected = reader->getInt32();
          ensureGrid();
      } else {
          reader->getInt32();
      }
      break;
  case 93:
  case 94:
  case 95:
  case 96:
  case 172:
  case 173:
  case 174:
  case 175:
  case 176:
  case 178:
      reader->getInt32();
      break;
  case 141:
      ensureGrid();
      if (m_dxfRowHeightsRead < m_content.m_rows.size())
          m_content.m_rows[m_dxfRowHeightsRead++].m_height = reader->getDouble();
      else
          reader->getDouble();
      break;
  case 142:
      ensureGrid();
      if (m_dxfColumnWidthsRead < m_content.m_columns.size())
          m_content.m_columns[m_dxfColumnWidthsRead++].m_width = reader->getDouble();
      else
          reader->getDouble();
      break;
  case 145:
      reader->getDouble();
      break;
  case 171:
      ensureGrid();
      if (!m_content.m_rows.empty() && !m_content.m_columns.empty()
          && m_dxfNextCell < m_content.m_rows.size() * m_content.m_columns.size()) {
          m_dxfCurrentCell = static_cast<int>(m_dxfNextCell++);
          if (DRW_TableCell *cell = currentCell())
              cell->m_flags = reader->getInt32();
          else
              reader->getInt32();
      } else {
          m_dxfCurrentCell = -1;
          reader->getInt32();
      }
      m_dxfInCellValue = false;
      break;
  case 301:
      m_dxfInCellValue = reader->getString() == "CELL_VALUE";
      if (m_dxfInCellValue)
          currentContent();
      break;
  case 1:
  case 302: {
      const UTF8STRINGstd::string text = reader->getUtf8String();
      if (m_dxfInCellValue) {
          if (DRW_TableCellContent *content = currentContent()) {
              content->m_text = text;
              content->m_value.m_dataType = 4;
              content->m_value.m_value.addString(1, text);
          }
      }
      break;
  }
  case 300:
      if (m_dxfInCellValue) {
          if (DRW_TableCellContent *content = currentContent())
              content->m_value.m_valueString = reader->getUtf8String();
          else
              reader->getUtf8String();
      } else {
          reader->getUtf8String();
      }
      break;
  case 304:
      reader->getString();
      m_dxfInCellValue = false;
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }

  return true;
3879}

3881bool DRW_Insert::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  std::int32_t objCount = 0;
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n************************** parsing insert/minsert *****************************************\n")DRW_dbg::dbg("\n************************** parsing insert/minsert *****************************************\n"
);
  basePoint.x = buf->getBitDouble();
  basePoint.y = buf->getBitDouble();
  basePoint.z = buf->getBitDouble();
  DRW_DBG("insertion point: ")DRW_dbg::dbg("insertion point: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (version < DRW::AC1015) {//14-
      xscale = buf->getBitDouble();
      yscale = buf->getBitDouble();
      zscale = buf->getBitDouble();
  } else {
      std::uint8_t dataFlags = buf->get2Bits();
      if (dataFlags == 3){
          //none default value 1,1,1
      } else if (dataFlags == 1){ //x default value 1, y & z can be x value
          yscale = buf->getDefaultDouble(xscale);
          zscale = buf->getDefaultDouble(xscale);
      } else if (dataFlags == 2){
          xscale = buf->getRawDouble();
          yscale = zscale = xscale;
      } else { //dataFlags == 0
          xscale = buf->getRawDouble();
          yscale = buf->getDefaultDouble(xscale);
          zscale = buf->getDefaultDouble(xscale);
      }
  }
  angle = buf->getBitDouble();
  DRW_DBG("scale : ")DRW_dbg::dbg("scale : "); DRW_DBGPT(xscale, yscale, zscale)DRW_dbg::dbgPT(xscale, yscale, zscale); DRW_DBG(", angle: ")DRW_dbg::dbg(", angle: "); DRW_DBG(angle)DRW_dbg::dbg(angle);
  extPoint = buf->getExtrusion(false); //3BD R14 style
  DRW_DBG("\nextrusion: ")DRW_dbg::dbg("\nextrusion: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z);

  bool hasAttrib = buf->getBit();
  DRW_DBG("   has Attrib: ")DRW_dbg::dbg("   has Attrib: "); DRW_DBG(hasAttrib)DRW_dbg::dbg(hasAttrib);

  if (hasAttrib && version > DRW::AC1015) {//2004+
      objCount = buf->getBitLong();
      DRW_UNUSED(objCount)(void)objCount;
      DRW_DBG("   objCount: ")DRW_dbg::dbg("   objCount: "); DRW_DBG(objCount)DRW_dbg::dbg(objCount); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (oType == 8) {//entity are minsert
      colcount = buf->getBitShort();
      rowcount = buf->getBitShort();
      colspace = buf->getBitDouble();
      rowspace = buf->getBitDouble();
  }
  DRW_DBG("   Remaining bytes: ")DRW_dbg::dbg("   Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  blockRecH = buf->getHandle(); /* H 2 BLOCK HEADER (hard pointer) */
  DRW_DBG("BLOCK HEADER Handle: ")DRW_dbg::dbg("BLOCK HEADER Handle: "); DRW_DBGHL(blockRecH.code, blockRecH.size, blockRecH.ref)DRW_dbg::dbgHL(blockRecH.code, blockRecH.size, blockRecH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG("   Remaining bytes: ")DRW_dbg::dbg("   Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  /*attribs follows*/
  if (hasAttrib) {
      if (version < DRW::AC1018) {//2000-
          dwgHandle attH = buf->getHandle(); /* H 2 BLOCK HEADER (hard pointer) */
          DRW_DBG("first attrib Handle: ")DRW_dbg::dbg("first attrib Handle: "); DRW_DBGHL(attH.code, attH.size, attH.ref)DRW_dbg::dbgHL(attH.code, attH.size, attH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
          attribHandles.push_back(attH);
          attH = buf->getHandle(); /* H 2 BLOCK HEADER (hard pointer) */
          DRW_DBG("second attrib Handle: ")DRW_dbg::dbg("second attrib Handle: "); DRW_DBGHL(attH.code, attH.size, attH.ref)DRW_dbg::dbgHL(attH.code, attH.size, attH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
          attribHandles.push_back(attH);
      } else {
          for (std::int32_t i=0; i < objCount && buf->isGood(); ++i){
              dwgHandle attH = buf->getHandle(); /* H 2 BLOCK HEADER (hard pointer) */
              DRW_DBG("attrib Handle #")DRW_dbg::dbg("attrib Handle #"); DRW_DBG(i)DRW_dbg::dbg(i); DRW_DBG(": ")DRW_dbg::dbg(": "); DRW_DBGHL(attH.code, attH.size, attH.ref)DRW_dbg::dbgHL(attH.code, attH.size, attH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
              attribHandles.push_back(attH);
          }
      }
      seqendH = buf->getHandle(); /* H 2 BLOCK HEADER (hard pointer) */
      DRW_DBG("seqendH Handle: ")DRW_dbg::dbg("seqendH Handle: "); DRW_DBGHL(seqendH.code, seqendH.size, seqendH.ref)DRW_dbg::dbgHL(seqendH.code, seqendH.size, seqendH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  DRW_DBG("   Remaining bytes: ")DRW_dbg::dbg("   Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  if (!ret)
      return ret;
3959//    RS crc;   //RS */
  return buf->isGood();
3961}

3963bool DRW_Table::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (version < DRW::AC1015)
      return false;

  dwgBuffer sBuff = *buf;
  sBuff.setVariableTextByteLength(true);
  dwgBuffer *sBuf = &sBuff;
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;

  DRW_DBG("\n************************** parsing table *****************************************\n")DRW_dbg::dbg("\n************************** parsing table *****************************************\n"
);
  basePoint.x = buf->getBitDouble();
  basePoint.y = buf->getBitDouble();
  basePoint.z = buf->getBitDouble();

  std::uint8_t dataFlags = buf->get2Bits();
  if (dataFlags == 3) {
      // default scale 1,1,1
  } else if (dataFlags == 1) {
      yscale = buf->getDefaultDouble(xscale);
      zscale = buf->getDefaultDouble(xscale);
  } else if (dataFlags == 2) {
      xscale = buf->getRawDouble();
      yscale = zscale = xscale;
  } else {
      xscale = buf->getRawDouble();
      yscale = buf->getDefaultDouble(xscale);
      zscale = buf->getDefaultDouble(xscale);
  }

  angle = buf->getBitDouble();
  extPoint = buf->getExtrusion(false);

  std::int32_t objCount = 0;
  bool hasAttrib = buf->getBit();
  if (hasAttrib && version > DRW::AC1015)
      objCount = buf->getBitLong();

  dwgBuffer hBuff = *buf;
  if (version <= DRW::AC1018) {
      // R2000/R2004: parseDwgEntHandle only re-seeks to the handle stream
      // for version > AC1018 (2007+ string area).  For the legacy versions
      // seek the snapshot to the handle-stream start (objSize is the
      // bit offset of the handle stream, RL field read in
      // DRW_Entity::parseDwg) or every handle below reads mid-DATA garbage.
      hBuff.setPosition(objSize >> 3);
      hBuff.setBitPos(objSize & 7);
  }
  ret = DRW_Entity::parseDwgEntHandle(version, &hBuff);
  blockRecH = hBuff.getHandle();

  if (hasAttrib) {
      for (std::int32_t i = 0; i < objCount && hBuff.isGood(); ++i)
          attribHandles.push_back(hBuff.getHandle());
      seqendH = hBuff.getHandle();
  }

  if (!ret)
      return ret;

  if (version >= DRW::AC1024) {
      buf->getRawChar8();
      readTableHandle(&hBuff);
      buf->getBitLong();
      if (version >= DRW::AC1027)
          buf->getBitLong();
      else
          buf->getBit();

      m_hasSemanticContent = true;
      m_semanticContentComplete = parseTableContent(version, buf, sBuf, &hBuff, m_content);
      if (m_content.m_tableStyleHandle != 0) {
          m_tableStyleHandle = m_content.m_tableStyleHandle;
      }
      if (!m_semanticContentComplete) {
          DRW_DBG("TABLECONTENT parse incomplete; anonymous block insert kept\n")DRW_dbg::dbg("TABLECONTENT parse incomplete; anonymous block insert kept\n"
);
          return true;
      }

      buf->getBitShort();
      m_horizontalDirection = buf->get3BitDouble();

      const std::uint64_t breakStartBit = currentDwgBit(buf);
      const bool hasBreakData = buf->getBitLong() != 0;
      if (hasBreakData) {
          buf->getBitLong();
          buf->getBitLong();
          buf->getBitDouble();
          buf->getBitLong();
          buf->getBitLong();
          const std::uint32_t manualPositions = buf->getBitLong();
          if (manualPositions > kMaxTableItems) {
              m_content.m_subrecordRanges.push_back(makeDwgSubrecordRange(
                  "table-break-data", breakStartBit, currentDwgBit(buf),
                  version, manualPositions, false));
              return true;
          }
          for (std::uint32_t i = 0; i < manualPositions; ++i) {
              buf->get3BitDouble();
              buf->getBitDouble();
              buf->getBitLong();
          }
          m_content.m_subrecordRanges.push_back(makeDwgSubrecordRange(
              "table-break-data", breakStartBit, currentDwgBit(buf),
              version, manualPositions, buf->isGood()));
      }

      const std::uint64_t rowRangeStartBit = currentDwgBit(buf);
      const std::uint32_t rowRanges = buf->getBitLong();
      if (rowRanges <= kMaxTableItems) {
          for (std::uint32_t i = 0; i < rowRanges; ++i) {
              buf->get3BitDouble();
              buf->getBitLong();
              buf->getBitLong();
          }
          if (rowRanges != 0) {
              m_content.m_subrecordRanges.push_back(makeDwgSubrecordRange(
                  "table-row-ranges", rowRangeStartBit, currentDwgBit(buf),
                  version, rowRanges, buf->isGood()));
          }
      } else {
          m_content.m_subrecordRanges.push_back(makeDwgSubrecordRange(
              "table-row-ranges", rowRangeStartBit, currentDwgBit(buf),
              version, rowRanges, false));
      }

      return true;
  }

  m_valueFlag = buf->getBitShort();
  m_horizontalDirection = buf->get3BitDouble();
  const std::uint32_t columns = buf->getBitLong();
  const std::uint32_t rows = buf->getBitLong();
  if (columns > kMaxTableColumns || rows > kMaxTableRows
      || (columns != 0 && rows > kMaxTableCells / columns)) {
      return true;
  }

  m_hasSemanticContent = true;
  m_semanticContentComplete = false;
  m_content.m_columns.clear();
  m_content.m_rows.clear();
  m_content.m_columns.reserve(columns);
  m_content.m_rows.reserve(rows);
  for (std::uint32_t i = 0; i < columns; ++i) {
      DRW_TableColumn column;
      column.m_width = buf->getBitDouble();
      m_content.m_columns.push_back(column);
  }
  for (std::uint32_t i = 0; i < rows; ++i) {
      DRW_TableRow row;
      row.m_height = buf->getBitDouble();
      row.m_cells.resize(columns);
      m_content.m_rows.push_back(row);
  }
  m_tableStyleHandle = readTableHandle(&hBuff);
  m_content.m_tableStyleHandle = m_tableStyleHandle;
  m_semanticContentComplete = true;
  // For <=AC1018 (R2000/R2004) there is no separate R2007+ string stream:
  // DRW_Entity::parseDwg only seeks sBuf when version > AC1018 (see the
  // `strBuf != NULL && version > DRW::AC1018` guard there), so legacy cell
  // text is inline in `buf`.  Passing the stale sBuf copy here would read
  // text from the wrong position and desync `buf`.  Pass nullptr so the
  // cell readers' `textBuf = strBuf ? strBuf : buf` falls back to the
  // inline `buf`.  R2007 (AC1021) keeps the separate sBuf stream.
  dwgBuffer *cellStrBuf = (version > DRW::AC1018) ? sBuf : nullptr;
  for (std::uint32_t row = 0; row < rows && m_semanticContentComplete; ++row) {
      for (std::uint32_t column = 0; column < columns; ++column) {
          if (!parseR2007TableCell(version, buf, cellStrBuf, &hBuff,
                                   m_content.m_rows[row].m_cells[column],
                                   &m_content.m_subrecordRanges)) {
              m_semanticContentComplete = false;
              break;
          }
      }
  }

  if (m_semanticContentComplete)
      m_semanticContentComplete = skipR2007TableOverrides(
          version, buf, cellStrBuf, &hBuff, &m_content.m_subrecordRanges);
  if (!m_semanticContentComplete)
      DRW_DBG("R2007 TABLE cell parse incomplete; anonymous block insert kept\n")DRW_dbg::dbg("R2007 TABLE cell parse incomplete; anonymous block insert kept\n"
);

  return true;
4148}

4150bool DRW_TableContentObject::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (version <= DRW::AC1018)
      return false;

  dwgBuffer sBuff = *buf;
  sBuff.setVariableTextByteLength(true);
  dwgBuffer *sBuf = &sBuff;
  bool ret = DRW_TableEntry::parseDwg(version, buf, sBuf, bs);
  DRW_DBG("\n************************** parsing table content object ************************\n")DRW_dbg::dbg("\n************************** parsing table content object ************************\n"
);
  if (!ret)
      return ret;

  dwgBuffer hBuff = *buf;
  seekTableObjectHandleStream(version, &hBuff, objSize);
  readTableObjectCommonHandles(&hBuff, handle, numReactors, xDictFlag, &parentHandle);

  m_parseComplete = parseTableContent(version, buf, sBuf, &hBuff, m_content);
  if (!m_parseComplete)
      DRW_DBG("TABLECONTENT object parse incomplete\n")DRW_dbg::dbg("TABLECONTENT object parse incomplete\n");
  return true;
4170}

4172void DRW_LWPolyline::applyExtrusion(){
  if (haveExtrusion) {
      calculateAxis(extPoint);
      for (unsigned int i=0; i<vertlist.size(); i++) {
	auto& vert = vertlist.at(i);
          DRW_Coord v(vert->x, vert->y, elevation);
          extrudePoint(extPoint, &v);
          vert->x = v.x;
          vert->y = v.y;
      }
  }
4183}

4185bool DRW_LWPolyline::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 10: {
vertex = std::make_shared<DRW_Vertex2D>();
      vertlist.push_back(vertex);
      vertex->x = reader->getDouble();
      break; }
  case 20:
if(vertex)
          vertex->y = reader->getDouble();
      break;
  case 40:
if(vertex)
          vertex->stawidth = reader->getDouble();
      break;
  case 41:
if(vertex)
          vertex->endwidth = reader->getDouble();
      break;
  case 42:
if(vertex)
          vertex->bulge = reader->getDouble();
      break;
  case 91:
      if (vertex)
          vertex->identifier = reader->getInt32();
      break;
  case 38:
      elevation = reader->getDouble();
      break;
  case 39:
      thickness = reader->getDouble();
      break;
  case 43:
      width = reader->getDouble();
      break;
  case 70:
      flags = reader->getInt32();
      break;
  case 90:
      vertexnum = reader->getInt32();
      return DRW::reserve( vertlist, vertexnum);
  case 210:
      haveExtrusion = true;
      extPoint.x = reader->getDouble();
      break;
  case 220:
      extPoint.y = reader->getDouble();
      break;
  case 230:
      extPoint.z = reader->getDouble();
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }

  return true;
4242}

4244bool DRW_LWPolyline::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing LWPolyline *******************************************\n")DRW_dbg::dbg("\n***************************** parsing LWPolyline *******************************************\n"
);

  flags = buf->getBitShort();
  DRW_DBG("flags value: ")DRW_dbg::dbg("flags value: "); DRW_DBG(flags)DRW_dbg::dbg(flags);
  if (flags & 4)
      width = buf->getBitDouble();
  if (flags & 8)
      elevation = buf->getBitDouble();
  if (flags & 2)
      thickness = buf->getBitDouble();
  if (flags & 1)
      extPoint = buf->getExtrusion(false);
  vertexnum = buf->getBitLong();
  if (!isValidCount(vertexnum, kMaxLWPolylineVertices)) {
      return false;
  }
  if (!DRW::reserve( vertlist, vertexnum)) {
      return false;
  }

  unsigned int bulgesnum = 0;
  if (flags & 16)
      bulgesnum = static_cast<unsigned int>(buf->getBitLong());
  int vertexIdCount = 0;
  if (version > DRW::AC1021) {//2010+
      if (flags & 1024)
          vertexIdCount = buf->getBitLong();
  }
  unsigned int widthsnum = 0;
  if (flags & 32)
      widthsnum = static_cast<unsigned int>(buf->getBitLong());
  if (bulgesnum > static_cast<unsigned int>(vertexnum) ||
      vertexIdCount < 0 || vertexIdCount > vertexnum ||
      widthsnum > static_cast<unsigned int>(vertexnum)) {
      return false;
  }
  DRW_DBG("\nvertex num: ")DRW_dbg::dbg("\nvertex num: "); DRW_DBG(vertexnum)DRW_dbg::dbg(vertexnum); DRW_DBG(" bulges num: ")DRW_dbg::dbg(" bulges num: "); DRW_DBG(bulgesnum)DRW_dbg::dbg(bulgesnum);
  DRW_DBG(" vertexIdCount: ")DRW_dbg::dbg(" vertexIdCount: "); DRW_DBG(vertexIdCount)DRW_dbg::dbg(vertexIdCount); DRW_DBG(" widths num: ")DRW_dbg::dbg(" widths num: "); DRW_DBG(widthsnum)DRW_dbg::dbg(widthsnum);
  // Translate DWG LWPLINE flag bits to DXF group 70 bits.
  // Per ODA spec 20.4.85 + libreDWG dwg.spec (DWG_ENTITY LWPOLYLINE):
  //   DWG bit  9 (0x200, 512) -> DXF bit 0 (closed,   value 1)
  //   DWG bit  8 (0x100, 256) -> DXF bit 7 (plinegen, value 128)
  // All other DWG flag bits indicate which optional fields are present
  // and have no DXF equivalent in group 70.
  int dxfFlags = 0;
  if (flags & 512)
      dxfFlags |= 1;
  if (flags & 256)
      dxfFlags |= 128;
  flags = dxfFlags;
  DRW_DBG("end flags value: ")DRW_dbg::dbg("end flags value: "); DRW_DBG(flags)DRW_dbg::dbg(flags);

  if (vertexnum > 0) { //verify if is lwpol without vertex (empty)
      // add vertexes
vertex = std::make_shared<DRW_Vertex2D>();
      vertex->x = buf->getRawDouble();
      vertex->y = buf->getRawDouble();
      vertlist.push_back(vertex);
auto pv = vertex;
      for (int i = 1; i< vertexnum; i++){
	vertex = std::make_shared<DRW_Vertex2D>();
	if (version < DRW::AC1015) {//14-
              vertex->x = buf->getRawDouble();
              vertex->y = buf->getRawDouble();
          } else {
4313//                DRW_Vertex2D *pv = vertlist.back();
              vertex->x = buf->getDefaultDouble(pv->x);
              vertex->y = buf->getDefaultDouble(pv->y);
          }
          pv = vertex;
          vertlist.push_back(vertex);
      }
      //add bulges
      for (unsigned int i = 0; i < bulgesnum; i++){
          double bulge = buf->getBitDouble();
          if (vertlist.size()> i)
              vertlist.at(i)->bulge = bulge;
      }
      //add vertexId
      if (version > DRW::AC1021) {//2010+
          for (int i = 0; i < vertexIdCount; i++){
              std::int32_t vertexId = buf->getBitLong();
              if (static_cast<size_t>(i) < vertlist.size())
                  vertlist.at(i)->identifier = vertexId;
          }
      }
      //add widths
      for (unsigned int i = 0; i < widthsnum; i++){
          double staW = buf->getBitDouble();
          double endW = buf->getBitDouble();
          if (i < vertlist.size()) {
              vertlist.at(i)->stawidth = staW;
              vertlist.at(i)->endwidth = endW;
          }
      }
  }
  if (DRW_DBGGLDRW_dbg::getInstance()->getLevel() == DRW_dbg::Level::Debug){
      DRW_DBG("\nVertex list: ")DRW_dbg::dbg("\nVertex list: ");
      for (auto& pv: vertlist) {
          DRW_DBG("\n   x: ")DRW_dbg::dbg("\n   x: "); DRW_DBG(pv->x)DRW_dbg::dbg(pv->x); DRW_DBG(" y: ")DRW_dbg::dbg(" y: "); DRW_DBG(pv->y)DRW_dbg::dbg(pv->y); DRW_DBG(" bulge: ")DRW_dbg::dbg(" bulge: "); DRW_DBG(pv->bulge)DRW_dbg::dbg(pv->bulge);
          DRW_DBG(" stawidth: ")DRW_dbg::dbg(" stawidth: "); DRW_DBG(pv->stawidth)DRW_dbg::dbg(pv->stawidth); DRW_DBG(" endwidth: ")DRW_dbg::dbg(" endwidth: "); DRW_DBG(pv->endwidth)DRW_dbg::dbg(pv->endwidth);
          DRW_DBG(" identifier: ")DRW_dbg::dbg(" identifier: "); DRW_DBG(pv->identifier)DRW_dbg::dbg(pv->identifier);
      }
  }

  DRW_DBG("\n")DRW_dbg::dbg("\n");
  /* Common Entity Handle Data */
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
  /* CRC X --- */
  return buf->isGood();
4360}


4363// ----------------------------------------------------------------------------
4364// DRW_MLine — multiline entity (ODA §19.4.78, fixed type 0x2F = 47).
4365// ----------------------------------------------------------------------------

4367bool DRW_MLine::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 2:
      styleName = reader->getString();
      break;
  case 340:
      styleHandle = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  case 40:
      scale = reader->getDouble();
      break;
  case 70:
      justification = static_cast<std::uint8_t>(reader->getInt32() & 0x3);
      break;
  case 71:
      openClosed = reader->getInt32();
      break;
  case 72:
      numVerts = static_cast<std::uint16_t>(reader->getInt32());
      break;
  case 73:
      numLines = static_cast<std::uint8_t>(reader->getInt32());
      break;
  case 10:
      basePoint.x = reader->getDouble();
      break;
  case 20:
      basePoint.y = reader->getDouble();
      break;
  case 30:
      basePoint.z = reader->getDouble();
      break;
  case 210:
      extPoint.x = reader->getDouble();
      break;
  case 220:
      extPoint.y = reader->getDouble();
      break;
  case 230:
      extPoint.z = reader->getDouble();
      break;
  // Per-vertex block: code 11 starts a new vertex; 12/13 follow.
  case 11:
      ++m_currentVertexIdx;
      m_currentElementIdx = 0;
      if (m_currentVertexIdx >= static_cast<int>(vertlist.size())) {
          vertlist.resize(m_currentVertexIdx + 1);
      }
      vertlist[m_currentVertexIdx].position.x = reader->getDouble();
      break;
  case 21:
      if (m_currentVertexIdx >= 0)
          vertlist[m_currentVertexIdx].position.y = reader->getDouble();
      break;
  case 31:
      if (m_currentVertexIdx >= 0)
          vertlist[m_currentVertexIdx].position.z = reader->getDouble();
      break;
  case 12:
      if (m_currentVertexIdx >= 0)
          vertlist[m_currentVertexIdx].vertexDir.x = reader->getDouble();
      break;
  case 22:
      if (m_currentVertexIdx >= 0)
          vertlist[m_currentVertexIdx].vertexDir.y = reader->getDouble();
      break;
  case 32:
      if (m_currentVertexIdx >= 0)
          vertlist[m_currentVertexIdx].vertexDir.z = reader->getDouble();
      break;
  case 13:
      if (m_currentVertexIdx >= 0)
          vertlist[m_currentVertexIdx].miterDir.x = reader->getDouble();
      break;
  case 23:
      if (m_currentVertexIdx >= 0)
          vertlist[m_currentVertexIdx].miterDir.y = reader->getDouble();
      break;
  case 33:
      if (m_currentVertexIdx >= 0)
          vertlist[m_currentVertexIdx].miterDir.z = reader->getDouble();
      break;
  // 74 = segment-param count for current element. Sets up the inner
  // vector and resets the running param count. 41 reads each param.
  // 75 = fill-param count; 42 reads each. After fills are consumed,
  // advance to the next element. AutoCAD emits 74/41*/75/42* per element.
  case 74:
      if (m_currentVertexIdx >= 0) {
          auto& v = vertlist[m_currentVertexIdx];
          if (static_cast<int>(v.segParms.size()) < numLines) {
              v.segParms.resize(numLines);
              v.areaFillParms.resize(numLines);
          }
          (void)reader->getInt32();   // expected count, used only as a marker
          m_currentSegFillCount = 0;
      }
      break;
  case 41:
      if (m_currentVertexIdx >= 0
          && m_currentElementIdx < static_cast<int>(vertlist[m_currentVertexIdx].segParms.size())) {
          vertlist[m_currentVertexIdx].segParms[m_currentElementIdx]
              .push_back(reader->getDouble());
      }
      break;
  case 75:
      if (m_currentVertexIdx >= 0) {
          m_currentSegFillCount = reader->getInt32();
          // After fills are emitted (or count==0 immediate), advance element.
          if (m_currentSegFillCount == 0
              && m_currentElementIdx + 1 < numLines) {
              ++m_currentElementIdx;
          }
      }
      break;
  case 42:
      if (m_currentVertexIdx >= 0
          && m_currentElementIdx < static_cast<int>(vertlist[m_currentVertexIdx].areaFillParms.size())) {
          vertlist[m_currentVertexIdx].areaFillParms[m_currentElementIdx]
              .push_back(reader->getDouble());
          if (static_cast<int>(vertlist[m_currentVertexIdx]
                               .areaFillParms[m_currentElementIdx].size())
              >= m_currentSegFillCount
              && m_currentElementIdx + 1 < numLines) {
              ++m_currentElementIdx;
          }
      }
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }
  return true;
4498}

4500bool DRW_MLine::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (!DRW_Entity::parseDwg(version, buf, nullptr, bs)) return false;
  DRW_DBG("\n***************************** parsing MLINE *********************\n")DRW_dbg::dbg("\n***************************** parsing MLINE *********************\n"
);
  // Per ODA §19.4.78 / libreDWG dwg_decode_MLINE:
  //   BD scale, RC justification, 3BD basePoint, BE extrusion,
  //   BS open/closed flag, RC num_lines, BS num_verts,
  //   then per-vertex: 3BD pos, 3BD vdir, 3BD mdir,
  //     per-line: BS num_segparms × BD parm, BS num_areafillparms × BD parm.
  scale         = buf->getBitDouble();
  justification = buf->getRawChar8();
  basePoint     = buf->get3BitDouble();
  extPoint      = buf->getExtrusion(false);
  openClosed    = buf->getBitShort();
  numLines      = buf->getRawChar8();
  numVerts      = buf->getBitShort();
  DRW_DBG(" mline scale: ")DRW_dbg::dbg(" mline scale: "); DRW_DBG(scale)DRW_dbg::dbg(scale);
  DRW_DBG(" just: ")DRW_dbg::dbg(" just: "); DRW_DBG(static_cast<int>(justification))DRW_dbg::dbg(static_cast<int>(justification));
  DRW_DBG(" openClosed: ")DRW_dbg::dbg(" openClosed: "); DRW_DBG(openClosed)DRW_dbg::dbg(openClosed);
  DRW_DBG(" lines: ")DRW_dbg::dbg(" lines: "); DRW_DBG(static_cast<int>(numLines))DRW_dbg::dbg(static_cast<int>(numLines));
  DRW_DBG(" verts: ")DRW_dbg::dbg(" verts: "); DRW_DBG(numVerts)DRW_dbg::dbg(numVerts); DRW_DBG("\n")DRW_dbg::dbg("\n");
  // Sanity: numLines / numVerts are RC and BS so already small types,
  // but guard against pathological values anyway.
  if (numLines > 100) return true;
  vertlist.reserve(numVerts);
  for (int vi = 0; vi < numVerts; ++vi) {
      DRW_MLineVertex vtx;
      vtx.position  = buf->get3BitDouble();
      vtx.vertexDir = buf->get3BitDouble();
      vtx.miterDir  = buf->get3BitDouble();
      vtx.segParms.resize(numLines);
      vtx.areaFillParms.resize(numLines);
      for (int li = 0; li < numLines; ++li) {
          std::uint16_t nSeg = buf->getBitShort();
          vtx.segParms[li].reserve(nSeg);
          for (int s = 0; s < nSeg; ++s) {
              vtx.segParms[li].push_back(buf->getBitDouble());
          }
          std::uint16_t nFill = buf->getBitShort();
          vtx.areaFillParms[li].reserve(nFill);
          for (int f = 0; f < nFill; ++f) {
              vtx.areaFillParms[li].push_back(buf->getBitDouble());
          }
      }
      vertlist.push_back(std::move(vtx));
  }
  if (!DRW_Entity::parseDwgEntHandle(version, buf)) return false;
  // MLINE has one extra handle in the handle stream after the standard
  // entity handles: the MLINESTYLE reference. Read if available — some
  // older files (R14) store the style name inline instead.
  if (version > DRW::AC1014 && buf->numRemainingBytes() > 0) {
      dwgHandle styleH = buf->getOffsetHandle(handle);
      styleHandle = styleH.ref;
      DRW_DBG(" MLINE style handle: ")DRW_dbg::dbg(" MLINE style handle: ");
      DRW_DBGHL(styleH.code, styleH.size, styleH.ref)DRW_dbg::dbgHL(styleH.code, styleH.size, styleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  return buf->isGood();
4556}


4559// ----------------------------------------------------------------------------
4560// DRW_Underlay — UNDERLAY entity (PDFUNDERLAY/DGNUNDERLAY/DWFUNDERLAY).
4561// libreDWG UNDERLAYREFERENCE.spec field order:
4562//   extrusion (BE) -> position (3BD) -> angle (BD radians) -> scale (3BD)
4563//   -> flags (RC) -> contrast (RC) -> fade (RC) -> num_clip (BL)
4564//   -> clip_verts (2RD × num_clip).
4565// Handle stream after standard entity handles: definition_id (H).
4566// ----------------------------------------------------------------------------

4568bool DRW_Underlay::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 340:
      definitionHandle = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  case 10: position.x = reader->getDouble(); break;
  case 20: position.y = reader->getDouble(); break;
  case 30: position.z = reader->getDouble(); break;
  case 41: scale.x = reader->getDouble(); break;
  case 42: scale.y = reader->getDouble(); break;
  case 43: scale.z = reader->getDouble(); break;
  case 50: rotation = reader->getDouble(); break;  // degrees in DXF
  case 210: extPoint.x = reader->getDouble(); break;
  case 220: extPoint.y = reader->getDouble(); break;
  case 230: extPoint.z = reader->getDouble(); break;
  case 280: flags    = static_cast<std::uint8_t>(reader->getInt32() & 0xFF); break;
  case 281: contrast = static_cast<std::uint8_t>(reader->getInt32() & 0xFF); break;
  case 282: fade     = static_cast<std::uint8_t>(reader->getInt32() & 0xFF); break;
  case 11: {
      ++m_currentClipVertexIdx;
      if (m_currentClipVertexIdx >= static_cast<int>(clipBoundary.size())) {
          clipBoundary.resize(m_currentClipVertexIdx + 1);
      }
      clipBoundary[m_currentClipVertexIdx].x = reader->getDouble();
      break;
  }
  case 21:
      if (m_currentClipVertexIdx >= 0
          && m_currentClipVertexIdx < static_cast<int>(clipBoundary.size())) {
          clipBoundary[m_currentClipVertexIdx].y = reader->getDouble();
      }
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }
  return true;
4604}

4606bool DRW_Underlay::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (!DRW_Entity::parseDwg(version, buf, nullptr, bs)) return false;
  DRW_DBG("\n***************************** parsing UNDERLAY ***************\n")DRW_dbg::dbg("\n***************************** parsing UNDERLAY ***************\n"
);
  extPoint = buf->getExtrusion(false);
  position = buf->get3BitDouble();
  rotation = buf->getBitDouble();   // angle (radians) BEFORE scale
  scale    = buf->get3BitDouble();
  flags    = buf->getRawChar8();
  contrast = buf->getRawChar8();
  fade     = buf->getRawChar8();
  std::uint32_t nClip = buf->getBitLong();
  DRW_DBG(" UNDERLAY pos: ")DRW_dbg::dbg(" UNDERLAY pos: "); DRW_DBG(position.x)DRW_dbg::dbg(position.x); DRW_DBG(",")DRW_dbg::dbg(",");
  DRW_DBG(position.y)DRW_dbg::dbg(position.y); DRW_DBG(" rot: ")DRW_dbg::dbg(" rot: "); DRW_DBG(rotation)DRW_dbg::dbg(rotation);
  DRW_DBG(" flags: ")DRW_dbg::dbg(" flags: "); DRW_DBGH(flags)DRW_dbg::dbgH(flags);
  DRW_DBG(" nClip: ")DRW_dbg::dbg(" nClip: "); DRW_DBG(nClip)DRW_dbg::dbg(nClip); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (nClip > 100000) return true;  // sanity
  clipBoundary.reserve(nClip);
  for (std::uint32_t i = 0; i < nClip; ++i) {
      DRW_Coord p;
      p.x = buf->getRawDouble();
      p.y = buf->getRawDouble();
      p.z = 0.0;
      clipBoundary.push_back(p);
  }
  if (!DRW_Entity::parseDwgEntHandle(version, buf)) return false;
  if (version > DRW::AC1014 && buf->numRemainingBytes() >= 2) {
      dwgHandle defH = buf->getOffsetHandle(handle);
      definitionHandle = defH.ref;
      DRW_DBG(" UNDERLAY definitionHandle: ")DRW_dbg::dbg(" UNDERLAY definitionHandle: ");
      DRW_DBGHL(defH.code, defH.size, defH.ref)DRW_dbg::dbgHL(defH.code, defH.size, defH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  return buf->isGood();
4638}

4640bool DRW_Underlay::encodeDwg(DRW::Version version, dwgBufferW *buf,
                           std::uint32_t bs, dwgBufferW *strBuf,
                           dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  switch (kind) {
  case DGN:
      oType = kDwgClassNumDgn;
      break;
  case DWF:
      oType = kDwgClassNumDwf;
      break;
  case PDF:
  default:
      oType = kDwgClassNumPdf;
      break;
  }
  if (!encodeDwgCommon(version, buf))
      return false;

  buf->putExtrusion(extPoint, false);
  buf->put3BitDouble(position);
  buf->putBitDouble(rotation);
  buf->put3BitDouble(scale);
  buf->putRawChar8(flags);
  buf->putRawChar8(contrast);
  buf->putRawChar8(fade);
  constexpr std::size_t kMaxClipVerts = 100000u;
  const std::size_t emitVerts = std::min(clipBoundary.size(), kMaxClipVerts);
  buf->putBitLong(static_cast<std::int32_t>(emitVerts));
  for (std::size_t i = 0; i < emitVerts; ++i) {
      buf->putRawDouble(clipBoundary[i].x);
      buf->putRawDouble(clipBoundary[i].y);
  }

  if (!encodeDwgEntHandle(version, buf, handleBuf))
      return false;
  putNullableHardPointerHandle(handleBuf ? handleBuf : buf, definitionHandle);
  return true;
4678}


4681bool DRW_Text::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 40:
      height = reader->getDouble();
      break;
  case 41:
      widthscale = reader->getDouble();
      break;
  case 50:
      angle = reader->getDouble();
      break;
  case 51:
      oblique = reader->getDouble();
      break;
  case 71:
      textgen = reader->getInt32();
      break;
  case 72:
      alignH = (HAlign)reader->getInt32();
      break;
  case 73:
      alignV = (VAlign)reader->getInt32();
      break;
  case 1:
      text = reader->getUtf8String();
      break;
  case 7:
      style = reader->getUtf8String();
      break;
  default:
      return DRW_Line::parseCode(code, reader);
  }

  return true;
4715}

4717bool DRW_Text::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018) {//2007+
      sBuf = &sBuff; //separate buffer for strings
  }
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing text *********************************************\n")DRW_dbg::dbg("\n***************************** parsing text *********************************************\n"
);

// DataFlags RC Used to determine presence of subsequent data, set to 0xFF for R14-
  std::uint8_t data_flags = 0x00;
  if (version > DRW::AC1014) {//2000+
      data_flags = buf->getRawChar8(); /* DataFlags RC Used to determine presence of subsequent data */
      DRW_DBG("data_flags: ")DRW_dbg::dbg("data_flags: "); DRW_DBG(data_flags)DRW_dbg::dbg(data_flags); DRW_DBG("\n")DRW_dbg::dbg("\n");
      if ( !(data_flags & 0x01) ) { /* Elevation RD --- present if !(DataFlags & 0x01) */
          basePoint.z = buf->getRawDouble();
      }
  } else {//14-
      basePoint.z = buf->getBitDouble(); /* Elevation BD --- */
  }
  basePoint.x = buf->getRawDouble(); /* Insertion pt 2RD 10 */
  basePoint.y = buf->getRawDouble();
  DRW_DBG("Insert point: ")DRW_dbg::dbg("Insert point: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (version > DRW::AC1014) {//2000+
      if ( !(data_flags & 0x02) ) { /* Alignment pt 2DD 11 present if !(DataFlags & 0x02), use 10 & 20 values for 2 default values.*/
          secPoint.x = buf->getDefaultDouble(basePoint.x);
          secPoint.y = buf->getDefaultDouble(basePoint.y);
      } else {
          secPoint = basePoint;
      }
  } else {//14-
      secPoint.x = buf->getRawDouble();  /* Alignment pt 2RD 11 */
      secPoint.y = buf->getRawDouble();
  }
  secPoint.z = basePoint.z;
  DRW_DBG("Alignment: ")DRW_dbg::dbg("Alignment: "); DRW_DBGPT(secPoint.x, secPoint.y, basePoint.z)DRW_dbg::dbgPT(secPoint.x, secPoint.y, basePoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  extPoint = buf->getExtrusion(version > DRW::AC1014);
  DRW_DBG("Extrusion: ")DRW_dbg::dbg("Extrusion: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  thickness = buf->getThickness(version > DRW::AC1014); /* Thickness BD 39 */

  if (version > DRW::AC1014) {//2000+
      if ( !(data_flags & 0x04) ) { /* Oblique ang RD 51 present if !(DataFlags & 0x04) */
          oblique = buf->getRawDouble();
      }
      if ( !(data_flags & 0x08) ) { /* Rotation ang RD 50 present if !(DataFlags & 0x08) */
          angle = buf->getRawDouble();
      }
      height = buf->getRawDouble(); /* Height RD 40 */
      if ( !(data_flags & 0x10) ) { /* Width factor RD 41 present if !(DataFlags & 0x10) */
          widthscale = buf->getRawDouble();
      }
  } else {//14-
      oblique = buf->getBitDouble(); /* Oblique ang BD 51 */
      angle = buf->getBitDouble(); /* Rotation ang BD 50 */
      height = buf->getBitDouble(); /* Height BD 40 */
      widthscale = buf->getBitDouble(); /* Width factor BD 41 */
  }
  angle *= ARAD57.29577951308232;
  DRW_DBG("thickness: ")DRW_dbg::dbg("thickness: "); DRW_DBG(thickness)DRW_dbg::dbg(thickness); DRW_DBG(", Oblique ang: ")DRW_dbg::dbg(", Oblique ang: "); DRW_DBG(oblique)DRW_dbg::dbg(oblique); DRW_DBG(", Width: ")DRW_dbg::dbg(", Width: ");
  DRW_DBG(widthscale)DRW_dbg::dbg(widthscale); DRW_DBG(", Rotation: ")DRW_dbg::dbg(", Rotation: "); DRW_DBG(angle)DRW_dbg::dbg(angle); DRW_DBG(", height: ")DRW_dbg::dbg(", height: "); DRW_DBG(height)DRW_dbg::dbg(height); DRW_DBG("\n")DRW_dbg::dbg("\n");
  text = sBuf->getVariableText(version, false); /* Text value TV 1 */
  DRW_DBG("text string: ")DRW_dbg::dbg("text string: "); DRW_DBG(text.c_str())DRW_dbg::dbg(text.c_str());DRW_DBG("\n")DRW_dbg::dbg("\n");
  //textgen, alignH, alignV always present in R14-, data_flags set in initialisation
  if ( !(data_flags & 0x20) ) { /* Generation BS 71 present if !(DataFlags & 0x20) */
      textgen = buf->getBitShort();
      DRW_DBG("textgen: ")DRW_dbg::dbg("textgen: "); DRW_DBG(textgen)DRW_dbg::dbg(textgen);
  }
  if ( !(data_flags & 0x40) ) { /* Horiz align. BS 72 present if !(DataFlags & 0x40) */
      alignH = (HAlign)buf->getBitShort();
      DRW_DBG(", alignH: ")DRW_dbg::dbg(", alignH: "); DRW_DBG(alignH)DRW_dbg::dbg(alignH);
  }
  if ( !(data_flags & 0x80) ) { /* Vert align. BS 73 present if !(DataFlags & 0x80) */
      alignV = (VAlign)buf->getBitShort();
      DRW_DBG(", alignV: ")DRW_dbg::dbg(", alignV: "); DRW_DBG(alignV)DRW_dbg::dbg(alignV);
  }
  DRW_DBG("\n")DRW_dbg::dbg("\n");

  /* Common Entity Handle Data */
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;

  styleH = buf->getHandle(); /* H 7 STYLE (hard pointer) */
  DRW_DBG("text style Handle: ")DRW_dbg::dbg("text style Handle: "); DRW_DBGHL(styleH.code, styleH.size, styleH.ref)DRW_dbg::dbgHL(styleH.code, styleH.size, styleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");

  /* CRC X --- */
  return buf->isGood();
4806}

4808// ---------------------------------------------------------------------------
4809// RTEXT (RText, Express Tools) — read-only, mapped onto DRW_Text.
4810// ---------------------------------------------------------------------------
4811bool DRW_RText::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  // RTEXT's DXF layout is a TEXT subset (1 text, 7 style, 10/20/30 insertion,
  // 40 height, 50 rotation deg, 210/220/230 extrusion) plus a flags long (70)
  // that plain TEXT does not carry.
  if (70 == code) {
      m_rTextFlags = reader->getInt32();
      return true;
  }
  return DRW_Text::parseCode(code, reader);
4820}

4822bool DRW_RText::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018)   // 2007+ strings live in a separate stream
      sBuf = &sBuff;
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing rtext ********************************************\n")DRW_dbg::dbg("\n***************************** parsing rtext ********************************************\n"
);

  basePoint = buf->get3BitDouble();   // insertion 3BD
  secPoint = basePoint;               // no separate alignment point
  extPoint = buf->get3BitDouble();    // extrusion 3BD
  angle = buf->getBitDouble() * ARAD57.29577951308232; // rotation BD (radians) -> degrees
  height = buf->getBitDouble();       // height BD
  m_rTextFlags = buf->getBitShort();  // flags BS
  text = sBuf->getVariableText(version, false);   // TV (DIESEL or literal)
  DRW_DBG("rtext string: ")DRW_dbg::dbg("rtext string: "); DRW_DBG(text.c_str())DRW_dbg::dbg(text.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
  styleH = buf->getHandle();          // STYLE (hard pointer)
  return buf->isGood();
4846}

4848// ---------------------------------------------------------------------------
4849// ARCALIGNEDTEXT (AcDbArcAlignedText, Express Tools) — read-only, mapped onto
4850// DRW_Text as a 2D approximation (text at the arc mid-point, tangent baseline).
4851// ---------------------------------------------------------------------------
4852bool DRW_RText::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                        dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = kDwgClassNum;
  if (!encodeDwgCommon(version, buf)) return false;

  buf->put3BitDouble(basePoint);
  buf->put3BitDouble(extPoint);
  buf->putBitDouble(angle / ARAD57.29577951308232);
  buf->putBitDouble(height);
  buf->putBitShort(bitShortFromInt(m_rTextFlags));
  (strBuf ? strBuf : buf)->putVariableText(version, text);

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  putHardPointerHandle(handleBuf ? handleBuf : buf,
                       (styleH.ref == 0) ? 0x13 : styleH.ref);
  return true;
4869}

4871void DRW_ArcAlignedText::applyArcApproximation(){
  const double mid = 0.5 * (m_startAngle + m_endAngle);
  basePoint.x = m_center.x + m_radius * std::cos(mid);
  basePoint.y = m_center.y + m_radius * std::sin(mid);
  basePoint.z = m_center.z;
  secPoint = basePoint;
  // Baseline tangent to the arc at the mid-point; angle stored in degrees to
  // match DRW_Text (which the DWG path fills via `angle *= ARAD`).
  angle = (mid + M_PI_21.57079632679489661923) * ARAD57.29577951308232;
  // Height from the text-size D2T string when parseable, else a fraction of
  // the radius so the approximation is at least visible.
  double h = 0.0;
  try { h = std::stod(m_textSize); } catch (...) { h = 0.0; }
  if (h > 0.0)
      height = h;
  else if (height <= 0.0)
      height = 0.1 * m_radius;
4888}

4890// Format a D2T (double-to-text) field the way the ARCALIGNEDTEXT model stores
4891// it: the DWG body carries these as text ("2.5", "1", "0"), while the DXF path
4892// reads them as doubles (group codes 41-46 fall in the double range, so the
4893// reader populates doubleData and leaves strData stale — getString() is unsafe
4894// here).  %g reproduces the same compact textual form.
4895static std::string arcAlignedD2T(double v){
  char buf[32];
  std::snprintf(buf, sizeof(buf), "%g", v);
  return std::string(buf);
4899}

4901static std::string arcAlignedStringOrDefault(const UTF8STRINGstd::string& value,
                                           const std::string& fallback) {
  return value.empty() ? fallback : value;
4904}

4906bool DRW_ArcAlignedText::encodeDwg(DRW::Version version, dwgBufferW *buf,
                                 std::uint32_t bs, dwgBufferW *strBuf,
                                 dwgBufferW *handleBuf) {
  (void)bs;
  oType = kDwgClassNum;
  if (!encodeDwgCommon(version, buf)) return false;

  dwgBufferW *sb = strBuf ? strBuf : buf;
  sb->putVariableText(version, arcAlignedStringOrDefault(
      m_textSize, arcAlignedD2T(height > 0.0 ? height : 0.0)));
  sb->putVariableText(version, arcAlignedStringOrDefault(
      m_xScale, arcAlignedD2T(widthscale > 0.0 ? widthscale : 1.0)));
  sb->putVariableText(version, arcAlignedStringOrDefault(m_charSpacing, "1"));
  sb->putVariableText(version, style.empty() ? "Standard" : style);
  sb->putVariableText(version, m_fontName);
  sb->putVariableText(version, m_bigFontName);
  sb->putVariableText(version, text);
  sb->putVariableText(version, arcAlignedStringOrDefault(m_offsetFromArc, "0"));
  sb->putVariableText(version, arcAlignedStringOrDefault(m_rightOffset, "0"));
  sb->putVariableText(version, arcAlignedStringOrDefault(m_leftOffset, "0"));

  buf->put3BitDouble(m_center);
  buf->putBitDouble(m_radius);
  buf->putBitDouble(m_startAngle);
  buf->putBitDouble(m_endAngle);
  buf->put3BitDouble(extPoint);
  buf->putBitLong(static_cast<std::int32_t>(m_rawColor));
  buf->putBitShort(bitShortFromInt(m_characterSet));
  buf->putBitShort(bitShortFromInt(m_pitchAndFamily));
  buf->putBitShort(bitShortFromInt(m_isShx));
  buf->putBitShort(bitShortFromInt(m_isBold));
  buf->putBitShort(bitShortFromInt(m_isItalic));
  buf->putBitShort(bitShortFromInt(m_isUnderlined));
  buf->putBitShort(bitShortFromInt(m_alignment));
  buf->putBitShort(bitShortFromInt(m_isReverse));
  buf->putBitShort(bitShortFromInt(m_wizardFlag));
  buf->putBitShort(bitShortFromInt(m_textPosition));
  buf->putBitShort(bitShortFromInt(m_textDirection));

  if (version <= DRW::AC1018)
      putNullableHardPointerHandle(buf, m_arcHandle);
  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  if (version > DRW::AC1018)
      putNullableHardPointerHandle(handleBuf ? handleBuf : buf, m_arcHandle);
  return true;
4951}

4953bool DRW_ArcAlignedText::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  // ARCALIGNEDTEXT repurposes several TEXT codes (2/10/40/41/50/51/70…), so it
  // must not delegate those to DRW_Text; unknown codes fall through to the
  // AcDbEntity common parser.  Angles (50/51) are DXF degrees -> radians.
  switch (code) {
  case 1:   text = reader->getUtf8String(); break;
  case 2:   m_fontName = reader->getUtf8String(); break;
  case 3:   m_bigFontName = reader->getUtf8String(); break;
  case 7:   style = reader->getUtf8String(); break;
  case 10:  m_center.x = reader->getDouble(); break;
  case 20:  m_center.y = reader->getDouble(); break;
  case 30:  m_center.z = reader->getDouble(); break;
  case 40:  m_radius = reader->getDouble(); break;
  case 41:  m_xScale = arcAlignedD2T(reader->getDouble()); break;
  case 42:  m_textSize = arcAlignedD2T(reader->getDouble()); break;
  case 43:  m_charSpacing = arcAlignedD2T(reader->getDouble()); break;
  case 44:  m_offsetFromArc = arcAlignedD2T(reader->getDouble()); break;
  case 45:  m_rightOffset = arcAlignedD2T(reader->getDouble()); break;
  case 46:  m_leftOffset = arcAlignedD2T(reader->getDouble()); break;
  case 50:  m_startAngle = reader->getDouble() / ARAD57.29577951308232; break;
  case 51:  m_endAngle = reader->getDouble() / ARAD57.29577951308232; break;
  case 70:  m_isReverse = reader->getInt32(); break;
  case 71:  m_textDirection = reader->getInt32(); break;
  case 72:  m_alignment = reader->getInt32(); break;
  case 73:  m_textPosition = reader->getInt32(); break;
  case 74:  m_isBold = reader->getInt32(); break;
  case 75:  m_isItalic = reader->getInt32(); break;
  case 76:  m_isUnderlined = reader->getInt32(); break;
  case 77:  m_characterSet = reader->getInt32(); break;
  case 78:  m_pitchAndFamily = reader->getInt32(); break;
  case 79:  m_isShx = reader->getInt32(); break;
  case 90:  m_rawColor = reader->getInt32(); break;
  case 210: extPoint.x = reader->getDouble(); break;
  case 220: extPoint.y = reader->getDouble(); break;
  case 230: extPoint.z = reader->getDouble(); break;
  case 280: m_wizardFlag = reader->getInt32(); break;
  default:  return DRW_Entity::parseCode(code, reader);
  }
  return true;
4992}

4994bool DRW_ArcAlignedText::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018)   // 2007+ strings live in a separate stream
      sBuf = &sBuff;
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing arcalignedtext **********************************\n")DRW_dbg::dbg("\n***************************** parsing arcalignedtext **********************************\n"
);

  m_textSize = sBuf->getVariableText(version, false);
  m_xScale = sBuf->getVariableText(version, false);
  m_charSpacing = sBuf->getVariableText(version, false);
  style = sBuf->getVariableText(version, false);
  m_fontName = sBuf->getVariableText(version, false);
  m_bigFontName = sBuf->getVariableText(version, false);
  text = sBuf->getVariableText(version, false);
  m_offsetFromArc = sBuf->getVariableText(version, false);
  m_rightOffset = sBuf->getVariableText(version, false);
  m_leftOffset = sBuf->getVariableText(version, false);
  m_center = buf->get3BitDouble();
  m_radius = buf->getBitDouble();
  m_startAngle = buf->getBitDouble();
  m_endAngle = buf->getBitDouble();
  extPoint = buf->get3BitDouble();
  m_rawColor = buf->getBitLong();
  m_characterSet = buf->getBitShort();
  m_pitchAndFamily = buf->getBitShort();
  m_isShx = buf->getBitShort();
  m_isBold = buf->getBitShort();
  m_isItalic = buf->getBitShort();
  m_isUnderlined = buf->getBitShort();
  m_alignment = buf->getBitShort();
  m_isReverse = buf->getBitShort();
  m_wizardFlag = buf->getBitShort();
  m_textPosition = buf->getBitShort();
  m_textDirection = buf->getBitShort();
  DRW_DBG("arcalignedtext string: ")DRW_dbg::dbg("arcalignedtext string: "); DRW_DBG(text.c_str())DRW_dbg::dbg(text.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  // R2004- keeps the arc handle before the common handle stream; R2007+ after.
  if (version <= DRW::AC1018)
      m_arcHandle = (buf->numRemainingBytes() > 0) ? buf->getHandle().ref : 0;

  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
  if (version > DRW::AC1018)
      m_arcHandle = (buf->numRemainingBytes() > 0) ? buf->getHandle().ref : 0;

  applyArcApproximation();
  return buf->isGood();
5045}

5047// Out-of-line special members: required because mtext is a unique_ptr<DRW_MText>
5048// declared with a forward-declared element type in the header.
5049DRW_Attrib::~DRW_Attrib() = default;
5050DRW_Attrib::DRW_Attrib(const DRW_Attrib& o)
  : DRW_Text(o), tag(o.tag), attribFlags(o.attribFlags),
    lockPosition(o.lockPosition), attVersion(o.attVersion),
    m_attributeType(o.m_attributeType),
    mtext(o.mtext ? std::make_unique<DRW_MText>(*o.mtext) : nullptr) {}
5055DRW_Attrib& DRW_Attrib::operator=(const DRW_Attrib& o) {
  if (this != &o) {
      DRW_Text::operator=(o);
      tag = o.tag;
      attribFlags = o.attribFlags;
      lockPosition = o.lockPosition;
      attVersion = o.attVersion;
      m_attributeType = o.m_attributeType;
      mtext = o.mtext ? std::make_unique<DRW_MText>(*o.mtext) : nullptr;
  }
  return *this;
5066}
5067DRW_Attrib::DRW_Attrib(DRW_Attrib&&) noexcept = default;
5068DRW_Attrib& DRW_Attrib::operator=(DRW_Attrib&&) noexcept = default;

5070namespace {
5071struct EmbeddedMTextHandleInfo {
  bool m_ownerHandle = false;
  int m_numReactors = 0;
  std::uint8_t m_xDictFlag = 1;
  bool m_hasAcDbColorHandle = false;
  int m_ltFlags = 0;
  int m_plotFlags = 0;
  int m_materialFlag = 0;
  int m_shadowFlag = 0;
  bool m_hasFullVisualStyle = false;
  bool m_hasFaceVisualStyle = false;
  bool m_hasEdgeVisualStyle = false;
  bool m_hasStyleHandle = true;
  bool m_hasR2018AppIdHandle = false;
  bool m_hasAnnotativeAppHandle = false;
5086};

5088static bool parseEmbeddedMTextEntityMode(DRW::Version version, dwgBuffer *buf,
                                       EmbeddedMTextHandleInfo& info) {
  std::uint8_t entmode = buf->get2Bits();
  info.m_ownerHandle = entmode == 0;
  info.m_numReactors = buf->getBitLong();
  if (version > DRW::AC1015) {
      info.m_xDictFlag = buf->getBit();
  }
  if (version > DRW::AC1024 || version < DRW::AC1018) {
      buf->getBit(); // nolinks / have-next-links
  }
  buf->getEnColor(version);
  info.m_hasAcDbColorHandle = buf->lastEnColorHadDbColorRef;
  buf->getBitDouble(); // linetype scale
  if (version > DRW::AC1014) {
      info.m_ltFlags = buf->get2Bits();
      info.m_plotFlags = buf->get2Bits();
  }
  if (version > DRW::AC1018) {
      info.m_materialFlag = buf->get2Bits();
      info.m_shadowFlag = buf->getRawChar8();
  }
  if (version > DRW::AC1021) {
      info.m_hasFullVisualStyle = buf->getBit() != 0;
      info.m_hasFaceVisualStyle = buf->getBit() != 0;
      info.m_hasEdgeVisualStyle = buf->getBit() != 0;
  }
  buf->getBitShort(); // invisibility
  if (version > DRW::AC1014) {
      buf->getRawChar8(); // lineweight
  }
  return buf->isGood();
5120}

5122static bool parseEmbeddedMTextDwg(DRW::Version version, dwgBuffer *buf,
                                dwgBuffer *sBuf, DRW_MText& mtext,
                                EmbeddedMTextHandleInfo& info) {
  if (!parseEmbeddedMTextEntityMode(version, buf, info))
      return false;

  mtext.basePoint = buf->get3BitDouble();
  mtext.extPoint = buf->get3BitDouble();
  mtext.secPoint = buf->get3BitDouble();
  mtext.angle = atan2(mtext.secPoint.y, mtext.secPoint.x) * ARAD57.29577951308232;
  mtext.widthscale = buf->getBitDouble();
  if (version > DRW::AC1018) {
      buf->getBitDouble(); // rect height
  }
  mtext.height = buf->getBitDouble();
  mtext.textgen = buf->getBitShort();
  mtext.alignH = static_cast<DRW_Text::HAlign>(buf->getBitShort());
  buf->getBitDouble(); // extents height
  buf->getBitDouble(); // extents width
  mtext.text = sBuf->getVariableText(version, false);

  if (version > DRW::AC1014) {
      buf->getBitShort();
      mtext.interlin = buf->getBitDouble();
      buf->getBit();
  }
  if (version > DRW::AC1015) {
      mtext.m_backgroundFlags = buf->getBitLong();
      if ((mtext.m_backgroundFlags & 0x01)
          || (version >= DRW::AC1032 && (mtext.m_backgroundFlags & 0x10))) {
          mtext.m_backgroundScale = buf->getBitDouble();  // BitDouble, not BitLong
          mtext.m_backgroundColor = static_cast<int>(buf->getCmColor(version, nullptr, sBuf));
          mtext.m_backgroundTransparency = buf->getBitLong();
      }
  }

  if (version >= DRW::AC1032) {
      mtext.m_r2018ColumnHeights.clear();
      mtext.m_r2018IsNotAnnotative = buf->getBit();
      if (mtext.m_r2018IsNotAnnotative) {
          mtext.m_r2018Version = buf->getBitShort();
          mtext.m_r2018DefaultFlag = buf->getBit();
          info.m_hasR2018AppIdHandle = true;
          mtext.m_r2018Attachment = buf->getBitLong();
          mtext.m_r2018XAxisDir = buf->get3BitDouble();
          mtext.m_r2018InsertionPoint = buf->get3BitDouble();
          mtext.m_r2018RectWidth = buf->getBitDouble();
          mtext.m_r2018RectHeight = buf->getBitDouble();
          mtext.m_r2018ExtentsHeight = buf->getBitDouble();
          mtext.m_r2018ExtentsWidth = buf->getBitDouble();
          mtext.m_r2018ColumnType = buf->getBitShort();
          if (mtext.m_r2018ColumnType != 0) {
              mtext.m_r2018ColumnCount = buf->getBitLong();
              mtext.m_r2018ColumnWidth = buf->getBitDouble();
              mtext.m_r2018ColumnGutter = buf->getBitDouble();
              mtext.m_r2018ColumnAutoHeight = buf->getBit();
              mtext.m_r2018ColumnFlowReversed = buf->getBit();
              if (!mtext.m_r2018ColumnAutoHeight && mtext.m_r2018ColumnType == 2
                  && mtext.m_r2018ColumnCount > 0 && mtext.m_r2018ColumnCount < 10000) {
                  mtext.m_r2018ColumnHeights.reserve(static_cast<size_t>(mtext.m_r2018ColumnCount));
                  for (std::int32_t i = 0; i < mtext.m_r2018ColumnCount; ++i) {
                      mtext.m_r2018ColumnHeights.push_back(buf->getBitDouble());
                  }
              }
          }
      }
  }

  const std::uint16_t annotativeSize = buf->getBitShort();
  if (annotativeSize > 0) {
      const int remaining = buf->numRemainingBytes();
      if (remaining < 0 || static_cast<std::uint64_t>(annotativeSize) > static_cast<std::uint64_t>(remaining))
          return false;
      std::vector<std::uint8_t> annotativeData(annotativeSize);
      buf->getBytes(annotativeData.data(), annotativeData.size());
      info.m_hasAnnotativeAppHandle = true;
      buf->getBitShort(); // unknown short, normally 0
  }
  return buf->isGood();
5201}

5203static bool consumeEmbeddedMTextHandles(DRW::Version version, dwgBuffer *buf,
                                      std::uint32_t objSize,
                                      const EmbeddedMTextHandleInfo& info,
                                      DRW_MText *mtext) {
  if (version > DRW::AC1018) {
      buf->setPosition(objSize >> 3);
      buf->setBitPos(objSize & 7);
  }
  if (info.m_hasAcDbColorHandle) buf->getHandle();
  if (info.m_ownerHandle) buf->getHandle();
  for (int i = 0; i < info.m_numReactors; ++i) buf->getHandle();
  if (info.m_xDictFlag != 1) buf->getHandle();
  if (version > DRW::AC1014) {
      buf->getHandle(); // layer
      if (info.m_ltFlags == 3) buf->getHandle();
  }
  if (version > DRW::AC1018) {
      if (info.m_materialFlag == 3) buf->getHandle();
      if (info.m_shadowFlag == 3) buf->getHandle();
  }
  if (info.m_plotFlags == 3) buf->getHandle();
  if (version > DRW::AC1021) {
      if (info.m_hasFullVisualStyle) buf->getHandle();
      if (info.m_hasFaceVisualStyle) buf->getHandle();
      if (info.m_hasEdgeVisualStyle) buf->getHandle();
  }
  if (info.m_hasStyleHandle) {
      dwgHandle styleH = buf->getHandle();
      if (mtext) mtext->styleH = styleH;
  }
  if (info.m_hasR2018AppIdHandle) {
      dwgHandle appIdH = buf->getHandle();
      if (mtext) mtext->m_r2018AppIdHandle = appIdH.ref;
  }
  if (info.m_hasAnnotativeAppHandle) buf->getHandle();
  return buf->isGood();
5239}

5241static bool encodeEmbeddedMTextEntityMode(DRW::Version version, dwgBufferW *buf,
                                        const DRW_MText& mtext) {
  if (version < DRW::AC1032)
      return false;

  // Embedded MTEXT begins at AcDbEntity mode, not with an object type,
  // object size, own handle, EED, or graphics data.
  buf->put2Bits(2);                       // modelspace, no owner handle
  buf->putBitLong(0);                     // no reactors
  buf->putBit(1);                         // xDictFlag=1, no xdict handle
  buf->putBit(1);                         // no prev/next links
  buf->putEnColor(version, static_cast<std::uint16_t>(mtext.color));
  buf->putBitDouble(mtext.ltypeScale);
  buf->put2Bits(0);                       // linetype by layer
  buf->put2Bits(0);                       // plotstyle by layer
  buf->put2Bits(0);                       // material inherit
  buf->putRawChar8(0);                    // shadow flags
  buf->putBit(0);                         // no full visual style
  buf->putBit(0);                         // no face visual style
  buf->putBit(0);                         // no edge visual style
  buf->putBitShort(0);                    // visible
  buf->putRawChar8(static_cast<std::uint8_t>(mtext.lWeight));
  return true;
5264}

5266static bool encodeEmbeddedMTextDwg(DRW::Version version, dwgBufferW *buf,
                                 dwgBufferW *strBuf, dwgBufferW *handleBuf,
                                 const DRW_MText& mtext) {
  if (!encodeEmbeddedMTextEntityMode(version, buf, mtext))
      return false;

  buf->put3BitDouble(mtext.basePoint);
  buf->put3BitDouble(mtext.extPoint);
  buf->put3BitDouble(mtext.secPoint);
  buf->putBitDouble(mtext.widthscale);
  buf->putBitDouble(mtext.m_r2018RectHeight);
  buf->putBitDouble(mtext.height);
  buf->putBitShort(static_cast<std::uint16_t>(mtext.textgen));
  buf->putBitShort(static_cast<std::uint16_t>(mtext.alignH));
  buf->putBitDouble(mtext.m_r2018ExtentsHeight);
  buf->putBitDouble(mtext.m_r2018ExtentsWidth);
  (strBuf ? strBuf : buf)->putVariableText(version, mtext.text);

  buf->putBitShort(0);                    // linespacing style
  buf->putBitDouble(mtext.interlin);
  buf->putBit(0);
  buf->putBitLong(mtext.m_backgroundFlags);
  if ((mtext.m_backgroundFlags & 0x01)
      || (mtext.m_backgroundFlags & 0x10)) {
      buf->putBitDouble(mtext.m_backgroundScale);  // BitDouble, not BitLong
      buf->putCmColor(version, static_cast<std::uint16_t>(mtext.m_backgroundColor));
      buf->putBitLong(mtext.m_backgroundTransparency);
  }

  buf->putBit(mtext.m_r2018IsNotAnnotative ? 1 : 0);
  if (mtext.m_r2018IsNotAnnotative) {
      buf->putBitShort(mtext.m_r2018Version);
      buf->putBit(mtext.m_r2018DefaultFlag ? 1 : 0);
      buf->putBitLong(mtext.m_r2018Attachment);
      buf->put3BitDouble(mtext.m_r2018XAxisDir);
      buf->put3BitDouble(mtext.m_r2018InsertionPoint);
      buf->putBitDouble(mtext.m_r2018RectWidth);
      buf->putBitDouble(mtext.m_r2018RectHeight);
      buf->putBitDouble(mtext.m_r2018ExtentsHeight);
      buf->putBitDouble(mtext.m_r2018ExtentsWidth);
      buf->putBitShort(mtext.m_r2018ColumnType);
      if (mtext.m_r2018ColumnType != 0) {
          std::int32_t columnCount = mtext.m_r2018ColumnCount;
          if (!mtext.m_r2018ColumnAutoHeight && mtext.m_r2018ColumnType == 2
              && !mtext.m_r2018ColumnHeights.empty()) {
              columnCount = static_cast<std::int32_t>(mtext.m_r2018ColumnHeights.size());
          }
          buf->putBitLong(columnCount);
          buf->putBitDouble(mtext.m_r2018ColumnWidth);
          buf->putBitDouble(mtext.m_r2018ColumnGutter);
          buf->putBit(mtext.m_r2018ColumnAutoHeight ? 1 : 0);
          buf->putBit(mtext.m_r2018ColumnFlowReversed ? 1 : 0);
          if (!mtext.m_r2018ColumnAutoHeight && mtext.m_r2018ColumnType == 2) {
              for (std::int32_t i = 0; i < columnCount; ++i) {
                  const double columnHeight = static_cast<size_t>(i) < mtext.m_r2018ColumnHeights.size()
                      ? mtext.m_r2018ColumnHeights[static_cast<size_t>(i)]
                      : 0.0;
                  buf->putBitDouble(columnHeight);
              }
          }
      }
  }

  buf->putBitShort(0);                    // no annotative payload

  dwgBufferW *hb = handleBuf ? handleBuf : buf;
  // Layer hard-pointer: consumeEmbeddedMTextHandles reads this UNCONDITIONALLY
  // for version > AC1014 (the entity-mode flags this encoder writes make every
  // other conditional embedded handle absent: no color/owner/reactor/xdict,
  // linetype/plotstyle/material/shadow all "by layer"). Omitting it made the
  // parser consume the style handle as the layer and the appId as the style,
  // then run into the PARENT ATTRIB/ATTDEF handle stream, shifting it. The
  // parser discards this value, so emit LAYER "0" (0x12) as the placeholder
  // (layerH is a protected DRW_Entity member, not reachable from this free
  // function; only the slot matters for handle-count alignment).
  putHardPointerHandle(hb, 0x12);
  putHardPointerHandle(hb, (mtext.styleH.ref == 0) ? 0x13 : mtext.styleH.ref);
  if (mtext.m_r2018IsNotAnnotative)
      putHardPointerHandle(hb, (mtext.m_r2018AppIdHandle == 0) ? 0x14 : mtext.m_r2018AppIdHandle);
  return true;
5346}
5347}

5349bool DRW_Attrib::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  // Multi-line ATTRIB (R2018+, ODA spec §20.4.4): an embedded MTEXT object
  // is introduced by the DXF subclass marker `100 / Embedded Object` (NOT
  // `AcDbMText`).  After the marker, the standard MTEXT group codes follow
  // (10/20/30 insertion, 11/21/31 X-axis, 40 height, 41 rect width, 71
  // attachment point, 72 drawing direction, 1 formatted text, etc.), then
  // the ATTRIB-specific tail (tag=2, prompt=3 for ATTDEF, flags=70,
  // lock-position=280) which we must NOT route into the embedded MText.
  if (code == 100) {
      const std::string sub = reader->getString();
      if (sub == "Embedded Object" && !mtext) {
          mtext = std::make_unique<DRW_MText>();
          if (attVersion == 0) attVersion = 1;
      }
      return true;
  }
  // Inside the embedded MText scope, route MTEXT-owned codes to mtext but
  // keep ATTRIB-specific tail codes for ATTRIB / ATTDEF handling below.
  if (mtext) {
      switch (code) {
      case 2:    // tag (ATTRIB-specific; group 1 in MText is text body)
      case 3:    // prompt (ATTDEF-specific)
      case 70:   // ATTRIB flags
      case 280:  // ATTRIB lock-position
          break; // fall through to ATTRIB handling below
      default:
          return mtext->parseCode(code, reader);
      }
  }
  switch (code) {
  case 2:
      tag = reader->getUtf8String();
      break;
  case 70:
      attribFlags = reader->getInt32();
      break;
  case 73:
      // AcDbAttribute code 73 = field length (obsolete); NOT the vertical
      // alignment from AcDbText (which is code 73 in TEXT but 74 in ATTRIB).
      m_fieldLength = reader->getInt32();
      break;
  case 74:
      // AcDbAttribute vertical alignment (code 74); TEXT uses code 73 for
      // this but ATTRIB moves it here to free code 73 for field length.
      alignV = (VAlign)reader->getInt32();
      break;
  case 280:
      // Lock position flag (R2010+ DXF group code)
      lockPosition = reader->getInt32() != 0;
      break;
  default:
      return DRW_Text::parseCode(code, reader);
  }
  return true;
5403}

5405bool DRW_Attrib::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018) {//2007+
      sBuf = &sBuff; //separate buffer for strings
  }
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing attrib *********************************************\n")DRW_dbg::dbg("\n***************************** parsing attrib *********************************************\n"
);

  // Inline TEXT subtype data (mirrors DRW_Text::parseDwg layout, sans handles)
  std::uint8_t data_flags = 0x00;
  if (version > DRW::AC1014) {
      data_flags = buf->getRawChar8();
      if (!(data_flags & 0x01)) {
          basePoint.z = buf->getRawDouble();
      }
  } else {
      basePoint.z = buf->getBitDouble();
  }
  basePoint.x = buf->getRawDouble();
  basePoint.y = buf->getRawDouble();
  DRW_DBG("Insert point: ")DRW_dbg::dbg("Insert point: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (version > DRW::AC1014) {
      if (!(data_flags & 0x02)) {
          secPoint.x = buf->getDefaultDouble(basePoint.x);
          secPoint.y = buf->getDefaultDouble(basePoint.y);
      } else {
          secPoint = basePoint;
      }
  } else {
      secPoint.x = buf->getRawDouble();
      secPoint.y = buf->getRawDouble();
  }
  secPoint.z = basePoint.z;
  extPoint = buf->getExtrusion(version > DRW::AC1014);
  thickness = buf->getThickness(version > DRW::AC1014);
  if (version > DRW::AC1014) {
      if (!(data_flags & 0x04)) oblique = buf->getRawDouble();
      if (!(data_flags & 0x08)) angle = buf->getRawDouble();
      height = buf->getRawDouble();
      if (!(data_flags & 0x10)) widthscale = buf->getRawDouble();
  } else {
      oblique = buf->getBitDouble();
      angle = buf->getBitDouble();
      height = buf->getBitDouble();
      widthscale = buf->getBitDouble();
  }
  angle *= ARAD57.29577951308232;
  text = sBuf->getVariableText(version, false);
  DRW_DBG("text value: ")DRW_dbg::dbg("text value: "); DRW_DBG(text.c_str())DRW_dbg::dbg(text.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (!(data_flags & 0x20)) textgen = buf->getBitShort();
  if (!(data_flags & 0x40)) alignH = (HAlign)buf->getBitShort();
  if (!(data_flags & 0x80)) alignV = (VAlign)buf->getBitShort();

  // R2010+ ATTRIB version follows the common TEXT data. R2018 adds the
  // attribute type immediately after it.
  if (version >= DRW::AC1024) {
      attVersion = buf->getRawChar8();
      DRW_DBG("att version: ")DRW_dbg::dbg("att version: "); DRW_DBG(attVersion)DRW_dbg::dbg(attVersion); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (version >= DRW::AC1032) {
      m_attributeType = buf->getRawChar8();
      DRW_DBG("attribute type: ")DRW_dbg::dbg("attribute type: "); DRW_DBG(m_attributeType)DRW_dbg::dbg(m_attributeType); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }

  bool hasEmbeddedMText = false;
  EmbeddedMTextHandleInfo embeddedMTextHandles;
  if (version >= DRW::AC1032 && m_attributeType != 0 && m_attributeType != 1) {
      mtext = std::make_unique<DRW_MText>();
      if (!parseEmbeddedMTextDwg(version, buf, sBuf, *mtext, embeddedMTextHandles)) {
          DRW_DBG("R2018 multi-line ATTRIB payload failed\n")DRW_dbg::dbg("R2018 multi-line ATTRIB payload failed\n");
          return false;
      }
      hasEmbeddedMText = true;
  }

  // ATTRIB-specific fields
  tag = sBuf->getVariableText(version, false);
  DRW_DBG("attrib tag: ")DRW_dbg::dbg("attrib tag: "); DRW_DBG(tag.c_str())DRW_dbg::dbg(tag.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  m_fieldLength = buf->getBitShort(); /* Field length BS (obsolete, usually 0) */

  attribFlags = buf->getRawChar8();
  DRW_DBG("attrib flags: ")DRW_dbg::dbg("attrib flags: "); DRW_DBG(attribFlags)DRW_dbg::dbg(attribFlags); DRW_DBG("\n")DRW_dbg::dbg("\n");

  // lockPosition (DXF 280) appears since R2007 (AC1021) per ODA §20.4.x /
  // ACadSharp.  Read gate lowered AC1024->AC1021 so R2007/8/9 imports keep
  // it.  The encoder still emits it only at AC1024 (no AC1021 writer
  // exists), so this is read-only; parseDwgEntHandle repositions to objSize
  // for version>AC1018, absorbing the +1 bit without handle-stream drift.
  if (version >= DRW::AC1021) {
      lockPosition = buf->getBit();
      DRW_DBG("lock position: ")DRW_dbg::dbg("lock position: "); DRW_DBG(lockPosition)DRW_dbg::dbg(lockPosition); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }

  /* Common Entity Handle Data */
  if (hasEmbeddedMText
      && !consumeEmbeddedMTextHandles(version, buf, objSize, embeddedMTextHandles, mtext.get())) {
      return false;
  }
  ret = DRW_Entity::parseDwgEntHandle(version, buf, !hasEmbeddedMText);
  if (!ret)
      return ret;

  styleH = buf->getHandle();
  DRW_DBG("text style Handle: ")DRW_dbg::dbg("text style Handle: "); DRW_DBGHL(styleH.code, styleH.size, styleH.ref)DRW_dbg::dbgHL(styleH.code, styleH.size, styleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");

  return buf->isGood();
5515}

5517bool DRW_Attrib::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  if (version >= DRW::AC1024 && version < DRW::AC1032 && (attVersion != 0 || mtext))
      return false;
  const std::uint8_t attributeType = (m_attributeType == 0) ? 1 : m_attributeType;
  const bool hasEmbeddedMText = version >= DRW::AC1032 && attributeType != 1;
  if (hasEmbeddedMText && !mtext)
      return false;

  oType = 2;  // ATTRIB class id — see dwgreader.cpp:1148
  if (!encodeDwgCommon(version, buf)) return false;

  // TEXT-body section — mirrors DRW_Attrib::parseDwg.
  // data_flags=0: emit every optional field unconditionally (same
  // strategy as DRW_Text::encodeDwg — simpler encoder, ~30 bytes larger).
  buf->putRawChar8(0);                              // data_flags=0
  buf->putRawDouble(basePoint.z);                   // elevation RD
  buf->putRawDouble(basePoint.x);                   // insertion 2RD
  buf->putRawDouble(basePoint.y);
  buf->putDefaultDouble(basePoint.x, secPoint.x);   // alignment 2DD
  buf->putDefaultDouble(basePoint.y, secPoint.y);
  buf->putExtrusion(extPoint, /*b_R2000_style=*/true);
  buf->putThickness(thickness, /*b_R2000_style=*/true);
  buf->putRawDouble(oblique);                       // oblique angle RD
  buf->putRawDouble(angle / ARAD57.29577951308232);                  // angle in radians RD
  buf->putRawDouble(height);                        // text height RD
  buf->putRawDouble(widthscale);                    // width factor RD
  dwgBufferW *sb = strBuf ? strBuf : buf;
  sb->putVariableText(version, text);               // text string TV
  buf->putBitShort(static_cast<std::uint16_t>(textgen));  // generation flags BS
  buf->putBitShort(static_cast<std::uint16_t>(alignH));   // horiz align BS
  buf->putBitShort(static_cast<std::uint16_t>(alignV));   // vert align BS

  if (version >= DRW::AC1024) {
      buf->putRawChar8(hasEmbeddedMText && attVersion == 0 ? 1 : attVersion);
  }
  if (version >= DRW::AC1032) {
      buf->putRawChar8(attributeType);
  }

  if (hasEmbeddedMText) {
      if (!encodeEmbeddedMTextDwg(version, buf, strBuf, handleBuf, *mtext))
          return false;
  }

  // ATTRIB-specific tail
  sb->putVariableText(version, tag);                // tag TV
  buf->putBitShort(static_cast<std::uint16_t>(m_fieldLength)); // fieldLen BS
  buf->putRawChar8(attribFlags);                    // flags RC
  if (version >= DRW::AC1024) {
      buf->putBit(lockPosition ? 1 : 0);             // lock position B
  }

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  dwgHandle sH;
  std::uint32_t sref = (styleH.ref == 0) ? 0x13 : styleH.ref;
  sH.code = 5;
  sH.ref  = sref;
  sH.size = 0;
  if (sref != 0) { std::uint32_t t = sref; while (t != 0) { t >>= 8; ++sH.size; } }
  (handleBuf ? handleBuf : buf)->putHandle(sH);
  return true;
5580}

5582bool DRW_Attdef::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 3:
      prompt = reader->getUtf8String();
      break;
  default:
      return DRW_Attrib::parseCode(code, reader);
  }
  return true;
5591}

5593bool DRW_Attdef::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  // ATTDEF mirrors ATTRIB layout but adds a prompt string after the tag.
  // Implementation duplicates ATTRIB::parseDwg in order to inject the
  // prompt read at the correct offset; refactor opportunity if a third
  // sibling appears.
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018) {
      sBuf = &sBuff;
  }
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing attdef *********************************************\n")DRW_dbg::dbg("\n***************************** parsing attdef *********************************************\n"
);

  std::uint8_t data_flags = 0x00;
  if (version > DRW::AC1014) {
      data_flags = buf->getRawChar8();
      if (!(data_flags & 0x01)) basePoint.z = buf->getRawDouble();
  } else {
      basePoint.z = buf->getBitDouble();
  }
  basePoint.x = buf->getRawDouble();
  basePoint.y = buf->getRawDouble();
  if (version > DRW::AC1014) {
      if (!(data_flags & 0x02)) {
          secPoint.x = buf->getDefaultDouble(basePoint.x);
          secPoint.y = buf->getDefaultDouble(basePoint.y);
      } else {
          secPoint = basePoint;
      }
  } else {
      secPoint.x = buf->getRawDouble();
      secPoint.y = buf->getRawDouble();
  }
  secPoint.z = basePoint.z;
  extPoint = buf->getExtrusion(version > DRW::AC1014);
  thickness = buf->getThickness(version > DRW::AC1014);
  if (version > DRW::AC1014) {
      if (!(data_flags & 0x04)) oblique = buf->getRawDouble();
      if (!(data_flags & 0x08)) angle = buf->getRawDouble();
      height = buf->getRawDouble();
      if (!(data_flags & 0x10)) widthscale = buf->getRawDouble();
  } else {
      oblique = buf->getBitDouble();
      angle = buf->getBitDouble();
      height = buf->getBitDouble();
      widthscale = buf->getBitDouble();
  }
  angle *= ARAD57.29577951308232;
  text = sBuf->getVariableText(version, false);
  if (!(data_flags & 0x20)) textgen = buf->getBitShort();
  if (!(data_flags & 0x40)) alignH = (HAlign)buf->getBitShort();
  if (!(data_flags & 0x80)) alignV = (VAlign)buf->getBitShort();

  if (version >= DRW::AC1024) {
      attVersion = buf->getRawChar8();
  }
  if (version >= DRW::AC1032) {
      m_attributeType = buf->getRawChar8();
  }

  bool hasEmbeddedMText = false;
  EmbeddedMTextHandleInfo embeddedMTextHandles;
  if (version >= DRW::AC1032 && m_attributeType != 0 && m_attributeType != 1) {
      mtext = std::make_unique<DRW_MText>();
      if (!parseEmbeddedMTextDwg(version, buf, sBuf, *mtext, embeddedMTextHandles)) {
          DRW_DBG("R2018 multi-line ATTDEF payload failed\n")DRW_dbg::dbg("R2018 multi-line ATTDEF payload failed\n");
          return false;
      }
      hasEmbeddedMText = true;
  }

  tag = sBuf->getVariableText(version, false);
  DRW_DBG("attdef tag: ")DRW_dbg::dbg("attdef tag: "); DRW_DBG(tag.c_str())DRW_dbg::dbg(tag.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  m_fieldLength = buf->getBitShort(); /* field length BS (obsolete, usually 0) */

  attribFlags = buf->getRawChar8();

  // lockPosition (DXF 280): read gate lowered AC1024->AC1021 to match
  // ATTRIB (R2007+). promptVersion/keep_duplicate RC below stays AC1024+.
  if (version >= DRW::AC1021) {
      lockPosition = buf->getBit();
  }

  if (version >= DRW::AC1024) {
      const std::uint8_t promptVersion = buf->getRawChar8();
      DRW_UNUSED(promptVersion)(void)promptVersion;
  }

  // ATTDEF prompt follows attrib body
  prompt = sBuf->getVariableText(version, false);
  DRW_DBG("attdef prompt: ")DRW_dbg::dbg("attdef prompt: "); DRW_DBG(prompt.c_str())DRW_dbg::dbg(prompt.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  if (hasEmbeddedMText
      && !consumeEmbeddedMTextHandles(version, buf, objSize, embeddedMTextHandles, mtext.get())) {
      return false;
  }
  ret = DRW_Entity::parseDwgEntHandle(version, buf, !hasEmbeddedMText);
  if (!ret)
      return ret;

  styleH = buf->getHandle();

  return buf->isGood();
5699}

5701bool DRW_Attdef::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  if (version >= DRW::AC1024 && version < DRW::AC1032 && (attVersion != 0 || mtext))
      return false;
  const std::uint8_t attributeType = (m_attributeType == 0) ? 1 : m_attributeType;
  const bool hasEmbeddedMText = version >= DRW::AC1032 && attributeType != 1;
  if (hasEmbeddedMText && !mtext)
      return false;

  oType = 3;  // ATTDEF class id — see dwgreader.cpp:1185
  if (!encodeDwgCommon(version, buf)) return false;

  // TEXT-body section — identical layout to DRW_Attrib::encodeDwg.
  buf->putRawChar8(0);
  buf->putRawDouble(basePoint.z);
  buf->putRawDouble(basePoint.x);
  buf->putRawDouble(basePoint.y);
  buf->putDefaultDouble(basePoint.x, secPoint.x);
  buf->putDefaultDouble(basePoint.y, secPoint.y);
  buf->putExtrusion(extPoint, /*b_R2000_style=*/true);
  buf->putThickness(thickness, /*b_R2000_style=*/true);
  buf->putRawDouble(oblique);
  buf->putRawDouble(angle / ARAD57.29577951308232);
  buf->putRawDouble(height);
  buf->putRawDouble(widthscale);
  dwgBufferW *sb = strBuf ? strBuf : buf;
  sb->putVariableText(version, text);
  buf->putBitShort(static_cast<std::uint16_t>(textgen));
  buf->putBitShort(static_cast<std::uint16_t>(alignH));
  buf->putBitShort(static_cast<std::uint16_t>(alignV));

  if (version >= DRW::AC1024) {
      buf->putRawChar8(hasEmbeddedMText && attVersion == 0 ? 1 : attVersion);
  }
  if (version >= DRW::AC1032) {
      buf->putRawChar8(attributeType);
  }

  if (hasEmbeddedMText) {
      if (!encodeEmbeddedMTextDwg(version, buf, strBuf, handleBuf, *mtext))
          return false;
  }

  sb->putVariableText(version, tag);
  buf->putBitShort(static_cast<std::uint16_t>(m_fieldLength)); // fieldLen BS
  buf->putRawChar8(attribFlags);
  if (version >= DRW::AC1024) {
      buf->putBit(lockPosition ? 1 : 0);
  }

  if (version >= DRW::AC1024) {
      buf->putRawChar8(attVersion);
  }

  // ATTDEF adds prompt between flags and handle stream
  sb->putVariableText(version, prompt);

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  dwgHandle sH;
  std::uint32_t sref = (styleH.ref == 0) ? 0x13 : styleH.ref;
  sH.code = 5;
  sH.ref  = sref;
  sH.size = 0;
  if (sref != 0) { std::uint32_t t = sref; while (t != 0) { t >>= 8; ++sH.size; } }
  (handleBuf ? handleBuf : buf)->putHandle(sH);
  return true;
5768}

5770bool DRW_MText::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 1:
      text += reader->getString();
      text = reader->toUtf8String(text);
      break;
  case 11:
      hasXAxisVec = true;
      return DRW_Text::parseCode(code, reader);
  case 3:
      text += reader->getString();
      break;
  case 44:
      interlin = reader->getDouble();
      break;
  case 50: // djm: per dxf docs, last of code 11 or code 50 prevails
      hasXAxisVec = false;
      angle = reader->getDouble();
      break;
  case 73:
      linespacingStyle = static_cast<std::uint16_t>(reader->getInt32());
      break;
  default:
      return DRW_Text::parseCode(code, reader);
  }

  return true;
5797}

5799bool DRW_MText::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018) {//2007+
      sBuf = &sBuff; //separate buffer for strings
  }
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing mtext *********************************************\n")DRW_dbg::dbg("\n***************************** parsing mtext *********************************************\n"
);

  basePoint = buf->get3BitDouble(); /* Insertion pt 3BD 10 - First picked point. */
  DRW_DBG("Insertion: ")DRW_dbg::dbg("Insertion: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z); DRW_DBG("\n")DRW_dbg::dbg("\n");
  extPoint = buf->get3BitDouble(); /* Extrusion 3BD 210 Undocumented; */
  secPoint = buf->get3BitDouble(); /* X-axis dir 3BD 11 */
  hasXAxisVec = true;
  updateAngle();
  widthscale = buf->getBitDouble(); /* Rect width BD 41 */
  if (version > DRW::AC1018) {//2007+
      /* Rect height BD 46 Reference rectangle height. */
      /** @todo */buf->getBitDouble();
  }
  height = buf->getBitDouble();/* Text height BD 40 Undocumented */
  textgen = buf->getBitShort(); /* Attachment BS 71 Similar to justification; */
  /* Drawing dir BS 72 Left to right, etc.; see DXF doc. Reuse the
   * inherited alignH slot — for MTEXT this field carries the DXF group 72
   * "drawing direction" code (1=LtoR, 3=TtoB, 5=ByStyle), not the TEXT
   * horizontal-alignment values the HAlign enum was named for. The integer
   * round-trips cleanly; consumers compare against the raw integer. */
  alignH = static_cast<HAlign>(buf->getBitShort());
  /* Extents ht BD Undocumented and not present in DXF or entget */
  double ext_ht = buf->getBitDouble();
  DRW_UNUSED(ext_ht)(void)ext_ht;
  /* Extents wid BD Undocumented and not present in DXF or entget The extents
  rectangle, when rotated the same as the text, fits the actual text image on
  the screen (although we've seen it include an extra row of text in height). */
  double ext_wid = buf->getBitDouble();
  DRW_UNUSED(ext_wid)(void)ext_wid;
  /* Text TV 1 All text in one long string (without '\n's 3 for line wrapping).
  ACAD seems to add braces ({ }) and backslash-P's to indicate paragraphs
  based on the "\r\n"'s found in the imported file. But, all the text is in
  this one long string -- not broken into 1- and 3-groups as in DXF and
  entget. ACAD's entget breaks this string into 250-char pieces (not 255 as
  doc'd) – even if it's mid-word. The 1-group always gets the tag end;
  therefore, the 3's are always 250 chars long. */
  text = sBuf->getVariableText(version, false); /* Text value TV 1 */
  if (version > DRW::AC1014) {//2000+
      linespacingStyle = buf->getBitShort();  // ODA §20.4.46 code 73
      interlin = buf->getBitDouble();/* Linespacing Factor BD 44 */
      buf->getBit();/* Unknown bit B */
  }
  if (version > DRW::AC1015) {//2004+
      /* Background flags BL 0 = no background, 1 = background fill, 2 =background
      fill with drawing fill color. */
      m_backgroundFlags = buf->getBitLong();
      if ((m_backgroundFlags & 0x01) || (version >= DRW::AC1032 && (m_backgroundFlags & 0x10))) {
          /* Background-fill box scale, present if background flags & 1 (default
             1.5). It is a BitDouble, NOT a BitLong: reading it as BL consumes
             the wrong bit width and desyncs the stream so the following CMC
             fill-colour reads garbage and the entity body overruns (parse fails
             on every MTEXT with background fill, e.g. sample_AC1018). ACadSharp
             reads ReadBitDouble here. */
          m_backgroundScale = buf->getBitDouble();
          /* Background color CMC Present if background flags = 1 */
          m_backgroundColor = static_cast<int>(buf->getCmColor(version, nullptr, sBuf));
          /** @todo buf->getCMC */
          /* Background transparency BL Present if background flags = 1 */
          m_backgroundTransparency = buf->getBitLong();
      }
  }

  bool hasR2018AppId = false;
  if (version >= DRW::AC1032) {
      m_r2018ColumnHeights.clear();
      m_r2018IsNotAnnotative = buf->getBit();
      if (m_r2018IsNotAnnotative) {
          m_r2018Version = buf->getBitShort();
          m_r2018DefaultFlag = buf->getBit();
          hasR2018AppId = true;            // appid H follows in handle stream
          m_r2018Attachment = buf->getBitLong();
          m_r2018XAxisDir = buf->get3BitDouble();
          m_r2018InsertionPoint = buf->get3BitDouble();
          m_r2018RectWidth = buf->getBitDouble();
          m_r2018RectHeight = buf->getBitDouble();
          m_r2018ExtentsHeight = buf->getBitDouble();
          m_r2018ExtentsWidth = buf->getBitDouble();
          m_r2018ColumnType = buf->getBitShort();
          if (m_r2018ColumnType != 0) {
              m_r2018ColumnCount = buf->getBitLong();
              m_r2018ColumnWidth = buf->getBitDouble();
              m_r2018ColumnGutter = buf->getBitDouble();
              m_r2018ColumnAutoHeight = buf->getBit();
              m_r2018ColumnFlowReversed = buf->getBit();
              if (!m_r2018ColumnAutoHeight && m_r2018ColumnType == 2 && m_r2018ColumnCount > 0
                  && m_r2018ColumnCount < 10000) {
                  m_r2018ColumnHeights.reserve(static_cast<size_t>(m_r2018ColumnCount));
                  for (std::int32_t i = 0; i < m_r2018ColumnCount; ++i) {
                      m_r2018ColumnHeights.push_back(buf->getBitDouble());
                  }
              }
          }
      }
  }

  /* Common Entity Handle Data */
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;

  styleH = buf->getHandle(); /* H 7 STYLE (hard pointer) */
  DRW_DBG("text style Handle: ")DRW_dbg::dbg("text style Handle: "); DRW_DBG(styleH.code)DRW_dbg::dbg(styleH.code); DRW_DBG(".")DRW_dbg::dbg(".");
  DRW_DBG(styleH.size)DRW_dbg::dbg(styleH.size); DRW_DBG(".")DRW_dbg::dbg("."); DRW_DBG(styleH.ref)DRW_dbg::dbg(styleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (hasR2018AppId) {
      dwgHandle appIdH = buf->getHandle();
      m_r2018AppIdHandle = appIdH.ref;
      DRW_DBG("mtext R2018 appid Handle: ")DRW_dbg::dbg("mtext R2018 appid Handle: "); DRW_DBGHL(appIdH.code, appIdH.size, appIdH.ref)DRW_dbg::dbgHL(appIdH.code, appIdH.size, appIdH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }

  /* CRC X --- */
  return buf->isGood();
5919}

5921void DRW_MText::updateAngle() {
  if (hasXAxisVec) {
      angle = atan2(secPoint.y, secPoint.x) * ARAD57.29577951308232;
  }
5925}

5927bool DRW_Polyline::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 70:
      flags = reader->getInt32();
      break;
  case 40:
      defstawidth = reader->getDouble();
      break;
  case 41:
      defendwidth = reader->getDouble();
      break;
  case 71:
      vertexcount = reader->getInt32();
      break;
  case 72:
      facecount = reader->getInt32();
      break;
  case 73:
      smoothM = reader->getInt32();
      break;
  case 74:
      smoothN = reader->getInt32();
      break;
  case 75:
      curvetype = reader->getInt32();
      break;
  default:
      return DRW_Point::parseCode(code, reader);
  }

  return true;
5958}

5960//0x0F polyline 2D bit 4(8) & 5(16) NOT set
5961//0x10 polyline 3D bit 4(8) set
5962//0x1D PFACE bit 5(16) set
5963bool DRW_Polyline::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing polyline *********************************************\n")DRW_dbg::dbg("\n***************************** parsing polyline *********************************************\n"
);

  std::int32_t ooCount = 0;
  if (oType == 0x0F) { //pline 2D
      flags = buf->getBitShort();
      DRW_DBG("flags value: ")DRW_dbg::dbg("flags value: "); DRW_DBG(flags)DRW_dbg::dbg(flags);
      curvetype = buf->getBitShort();
      defstawidth = buf->getBitDouble();
      defendwidth = buf->getBitDouble();
      thickness = buf->getThickness(version > DRW::AC1014);
      basePoint = DRW_Coord(0,0,buf->getBitDouble());
      extPoint = buf->getExtrusion(version > DRW::AC1014);
  } else if (oType == 0x10) { //pline 3D
      std::uint8_t tmpFlag = buf->getRawChar8();
      DRW_DBG("flags 1 value: ")DRW_dbg::dbg("flags 1 value: "); DRW_DBG(tmpFlag)DRW_dbg::dbg(tmpFlag);
      if (tmpFlag & 1)
          curvetype = 5;       // quadratic B-spline
      else if (tmpFlag & 2)
          curvetype = 6;       // cubic B-spline
      if (tmpFlag & 3)
          flags |= 4;          // splined (bit 2); do NOT overwrite curvetype to 8
      tmpFlag = buf->getRawChar8();
      if (tmpFlag & 1)
          flags |= 1;
      flags |= 8; //indicate 3DPOL
      DRW_DBG("flags 2 value: ")DRW_dbg::dbg("flags 2 value: "); DRW_DBG(tmpFlag)DRW_dbg::dbg(tmpFlag);
  } else if (oType == 0x1D) { //PFACE
      flags = 64;
      vertexcount = buf->getBitShort();
      DRW_DBG("vertex count: ")DRW_dbg::dbg("vertex count: "); DRW_DBG(vertexcount)DRW_dbg::dbg(vertexcount);
      facecount = buf->getBitShort();
      DRW_DBG("face count: ")DRW_dbg::dbg("face count: "); DRW_DBG(facecount)DRW_dbg::dbg(facecount);
      DRW_DBG("flags value: ")DRW_dbg::dbg("flags value: "); DRW_DBG(flags)DRW_dbg::dbg(flags);
  } else if (oType == 0x1E) { //POLYLINE_MESH per ODA spec sec 19.4.31
      flags = buf->getBitShort();
      DRW_DBG("flags value: ")DRW_dbg::dbg("flags value: "); DRW_DBG(flags)DRW_dbg::dbg(flags);
      flags |= 16; //bit 4 = 3D polygon mesh
      curvetype = buf->getBitShort();
      vertexcount = buf->getBitShort(); //M-count
      DRW_DBG(" M count: ")DRW_dbg::dbg(" M count: "); DRW_DBG(vertexcount)DRW_dbg::dbg(vertexcount);
      facecount = buf->getBitShort(); //N-count
      DRW_DBG(" N count: ")DRW_dbg::dbg(" N count: "); DRW_DBG(facecount)DRW_dbg::dbg(facecount);
      smoothM = buf->getBitShort(); //M smooth-surface density, DXF 73
      smoothN = buf->getBitShort(); //N smooth-surface density, DXF 74
      DRW_DBG(" M/N density: ")DRW_dbg::dbg(" M/N density: "); DRW_DBG(smoothM)DRW_dbg::dbg(smoothM); DRW_DBG("/")DRW_dbg::dbg("/"); DRW_DBG(smoothN)DRW_dbg::dbg(smoothN);
  }
  if (version > DRW::AC1015){ //2004+
      ooCount = buf->getBitLong();
  }

  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;

  if (version < DRW::AC1018){ //2000-
      dwgHandle objectH = buf->getOffsetHandle(handle);
      firstEH = objectH.ref;
      DRW_DBG(" first Vertex Handle: ")DRW_dbg::dbg(" first Vertex Handle: "); DRW_DBGHL(objectH.code, objectH.size, objectH.ref)DRW_dbg::dbgHL(objectH.code, objectH.size, objectH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      objectH = buf->getOffsetHandle(handle);
      lastEH = objectH.ref;
      DRW_DBG(" last Vertex Handle: ")DRW_dbg::dbg(" last Vertex Handle: "); DRW_DBGHL(objectH.code, objectH.size, objectH.ref)DRW_dbg::dbgHL(objectH.code, objectH.size, objectH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  } else {
      for (std::int32_t i = 0; i < ooCount; ++i){
              dwgHandle objectH = buf->getOffsetHandle(handle);
              hadlesList.push_back (objectH.ref);
              DRW_DBG(" Vertex Handle: ")DRW_dbg::dbg(" Vertex Handle: "); DRW_DBGHL(objectH.code, objectH.size, objectH.ref)DRW_dbg::dbgHL(objectH.code, objectH.size, objectH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
              DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      }
  }
  seqEndH = buf->getOffsetHandle(handle);
  DRW_DBG(" SEQEND Handle: ")DRW_dbg::dbg(" SEQEND Handle: "); DRW_DBGHL(seqEndH.code, seqEndH.size, seqEndH.ref)DRW_dbg::dbgHL(seqEndH.code, seqEndH.size, seqEndH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

6041//    RS crc;   //RS */
  return buf->isGood();
6043}

6045bool DRW_Vertex::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 70:
      flags = reader->getInt32();
      break;
  case 40:
      stawidth = reader->getDouble();
      break;
  case 41:
      endwidth = reader->getDouble();
      break;
  case 42:
      bulge = reader->getDouble();
      break;
  case 50:
      tgdir = reader->getDouble();
      break;
  case 71:
      vindex1 = reader->getInt32();
      break;
  case 72:
      vindex2 = reader->getInt32();
      break;
  case 73:
      vindex3 = reader->getInt32();
      break;
  case 74:
      vindex4 = reader->getInt32();
      break;
  case 91:
      identifier = reader->getInt32();
      break;
  default:
      return DRW_Point::parseCode(code, reader);
  }

  return true;
6082}

6084//0x0A vertex 2D
6085//0x0B vertex 3D
6086//0x0C MESH
6087//0x0D PFACE
6088//0x0E PFACE FACE
6089bool DRW_Vertex::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs, double el){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing pline Vertex *********************************************\n")DRW_dbg::dbg("\n***************************** parsing pline Vertex *********************************************\n"
);

  if (oType == 0x0A) { //pline 2D, needed example
      m_dwgSubtype = DwgSubtype::Vertex2D;
      flags = buf->getRawChar8(); //RLZ: EC  unknown type
      DRW_DBG("flags value: ")DRW_dbg::dbg("flags value: "); DRW_DBG(flags)DRW_dbg::dbg(flags);
      basePoint = buf->get3BitDouble();
      basePoint.z = el;
      DRW_DBG("basePoint: ")DRW_dbg::dbg("basePoint: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
      stawidth = buf->getBitDouble();
      if (stawidth < 0)
          endwidth = stawidth = fabs(stawidth);
      else
          endwidth = buf->getBitDouble();
      bulge = buf->getBitDouble();
      if (version > DRW::AC1021) { //2010+
          identifier = buf->getBitLong();  // ODA §20.4.11 code 91
          DRW_DBG("Vertex ID: ")DRW_dbg::dbg("Vertex ID: "); DRW_DBG(identifier)DRW_dbg::dbg(identifier);
      }
      tgdir = buf->getBitDouble();
  } else if (oType == 0x0B || oType == 0x0C || oType == 0x0D) { //PFACE
      if (oType == 0x0B)
          m_dwgSubtype = DwgSubtype::Vertex3D;
      else if (oType == 0x0C)
          m_dwgSubtype = DwgSubtype::Mesh;
      else
          m_dwgSubtype = DwgSubtype::Polyface;
      flags = buf->getRawChar8(); //RLZ: EC  unknown type
      DRW_DBG("flags value: ")DRW_dbg::dbg("flags value: "); DRW_DBG(flags)DRW_dbg::dbg(flags);
      basePoint = buf->get3BitDouble();
      DRW_DBG("basePoint: ")DRW_dbg::dbg("basePoint: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
  } else if (oType == 0x0E) { //PFACE FACE
      m_dwgSubtype = DwgSubtype::PolyfaceFace;
      auto signedIndex = [](int value) {
          return value > 32767 ? value - 65536 : value;
      };
      vindex1 = signedIndex(buf->getBitShort());
      vindex2 = signedIndex(buf->getBitShort());
      vindex3 = signedIndex(buf->getBitShort());
      vindex4 = signedIndex(buf->getBitShort());
  }

  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
6138//    RS crc;   //RS */
  return buf->isGood();
6140}

6142bool DRW_Hatch::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 2:
      name = reader->getUtf8String();
      break;
  case 70:
      solid = reader->getInt32();
      break;
  case 71:
      associative = reader->getInt32();
      break;
  case 72:        /*edge type*/
      if (ispol){ // polyline path: 72 is the has-bulge flag. Do NOT fold it
          // into pline->flags — bit 0 there is the *closed* flag (set by code
          // 73), and the per-vertex bulges arrive via code 42 regardless. Some
          // writers (e.g. ezdxf MPOLYGON) emit 73 before 72; the old code let
          // 72 clear the closed bit 73 had just set, leaving the boundary open
          // so RS_Hatch::validate() rejected the area.
          break;
      } else if (reader->getInt32() == 1){ //line
          addLine();
      } else if (reader->getInt32() == 2){ //arc
          addArc();
      } else if (reader->getInt32() == 3){ //elliptic arc
          addEllipse();
      } else if (reader->getInt32() == 4){ //spline
          addSpline();
      }
      break;
  case 10:
      // Spline edge: 10 is a control-point x-coord.
      if (spline) {
          spline->controllist.push_back(std::make_shared<DRW_Coord>(reader->getDouble(), 0.0, 0.0));
          break;
      }
      if (pt) pt->basePoint.x = reader->getDouble();
      else if (pline) {
          plvert = pline->addVertex();
          plvert->x = reader->getDouble();
      } else {
          // After group 98 the boundary path is closed; seed-point
          // coords arrive as group-10/20 pairs.
          DRW_Coord seed;
          seed.x = reader->getDouble();
          seedPoints.push_back(seed);
      }
      break;
  case 20:
      if (spline && !spline->controllist.empty()) {
          spline->controllist.back()->y = reader->getDouble();
          break;
      }
      if (pt) pt->basePoint.y = reader->getDouble();
      else if (plvert) plvert ->y = reader->getDouble();
      else if (!seedPoints.empty())
          seedPoints.back().y = reader->getDouble();
      break;
  case 11:
      // Spline edge: 11 is a fit-point x-coord.
      if (spline) {
          spline->fitlist.push_back(std::make_shared<DRW_Coord>(reader->getDouble(), 0.0, 0.0));
          break;
      }
      if (line) line->secPoint.x = reader->getDouble();
      else if (ellipse) ellipse->secPoint.x = reader->getDouble();
      break;
  case 21:
      if (spline && !spline->fitlist.empty()) {
          spline->fitlist.back()->y = reader->getDouble();
          break;
      }
      if (line) line->secPoint.y = reader->getDouble();
      else if (ellipse) ellipse->secPoint.y = reader->getDouble();
      break;
  case 12:
      if (spline) { spline->tgStart.x = reader->getDouble(); break; }
      break;
  case 22:
      if (spline) { spline->tgStart.y = reader->getDouble(); break; }
      break;
  case 13:
      if (spline) { spline->tgEnd.x = reader->getDouble(); break; }
      break;
  case 23:
      if (spline) { spline->tgEnd.y = reader->getDouble(); break; }
      break;
  case 40:
      // Spline edge: 40 is a knot value (occurs nknots times).
      if (spline) {
          spline->knotslist.push_back(reader->getDouble());
          break;
      }
      if (arc) arc->radious = reader->getDouble();
      else if (ellipse) ellipse->ratio = reader->getDouble();
      break;
  case 41:
      scale = reader->getDouble();
      break;
  case 42:
      // Spline edge: 42 is a per-control-point weight.
      if (spline) {
          spline->weightlist.push_back(reader->getDouble());
          break;
      }
      if (plvert) plvert ->bulge = reader->getDouble();
      break;
  case 50:
      if (arc) arc->staangle = reader->getDouble()/ARAD57.29577951308232;
      else if (ellipse) ellipse->staparam = reader->getDouble()/ARAD57.29577951308232;
      break;
  case 51:
      if (arc) arc->endangle = reader->getDouble()/ARAD57.29577951308232;
      else if (ellipse) ellipse->endparam = reader->getDouble()/ARAD57.29577951308232;
      break;
  case 47:
      pixelSize = reader->getDouble();
      break;
  case 52:
      angle = reader->getDouble();
      break;
  case 53: // pattern line angle — starts a new PatternLine record
      patternLines.push_back(PatternLine());
      patternLines.back().angle = reader->getDouble();
      break;
  case 43:
      if (!patternLines.empty()) patternLines.back().baseX = reader->getDouble();
      break;
  case 44:
      if (!patternLines.empty()) patternLines.back().baseY = reader->getDouble();
      break;
  case 45:
      if (!patternLines.empty()) patternLines.back().offsetX = reader->getDouble();
      break;
  case 46:
      if (!patternLines.empty()) patternLines.back().offsetY = reader->getDouble();
      break;
  case 79: // dash count — the 49s that follow will accumulate
      break;
  case 49:
      if (!patternLines.empty()) patternLines.back().dashList.push_back(reader->getDouble());
      break;
  case 73:
      // Spline edge: 73 is the rational flag (1 = rational).
      if (spline) {
          if (reader->getInt32()) spline->flags |= 0x4;
          break;
      }
      if (arc) arc->isccw = reader->getInt32();
      // polyline path: 73 is the is-closed flag -> set bit 0 only, leaving the
      // rest of pline->flags untouched (order-independent vs code 72).
      else if (pline) pline->flags = (pline->flags & ~1) | (reader->getInt32() ? 1 : 0);
      break;
  case 74:
      // Spline edge: 74 is the periodic flag (1 = periodic/closed).
      if (spline) {
          if (reader->getInt32()) spline->flags |= 0x2;
      }
      break;
  case 94:
      // Spline edge degree.
      if (spline) spline->degree = reader->getInt32();
      break;
  case 95:
      // Spline edge number of knots.
      if (spline) spline->nknots = reader->getInt32();
      break;
  case 96:
      // Spline edge number of control points.
      if (spline) spline->ncontrol = reader->getInt32();
      break;
  case 97:
      if (spline) {
          if (!m_splineNfitSet) {
              // First 97 in this spline edge = fit-point count (nfit).
              spline->nfit = reader->getInt32();
              if (spline->nfit == 0) {
                  // No fit points or tangents follow; safe to clear spline
                  // so the next code-97 (loop boundary count) is not
                  // misinterpreted as another nfit.
                  spline.reset();
              } else {
                  m_splineNfitSet = true;
              }
          } else {
              // Second 97 while spline is active = loop boundary handle count.
              spline.reset();
              m_splineNfitSet = false;
              m_boundaryHandleCount = reader->getInt32();
              if (m_boundaryHandleCount > 0 && loop)
                  DRW::reserve(loop->m_boundaryHandles, m_boundaryHandleCount);
          }
          break;
      }
      // No active spline: this is the loop boundary handle count.
      m_splineNfitSet = false;
      m_boundaryHandleCount = reader->getInt32();
      if (m_boundaryHandleCount > 0 && loop)
          DRW::reserve(loop->m_boundaryHandles, m_boundaryHandleCount);
      break;
  case 330:
      if (m_boundaryHandleCount > 0 && loop) {
          // getHandleString() converts the hex string to int for us.
          loop->m_boundaryHandles.push_back(
              static_cast<std::uint32_t>(reader->getHandleString()));
          --m_boundaryHandleCount;
          break;
      }
      return DRW_Point::parseCode(code, reader);
  case 75:
      hstyle = reader->getInt32();
      break;
  case 76:
      hpattern = reader->getInt32();
      break;
  case 77:
      doubleflag = reader->getInt32();
      break;
  case 78:
      deflines = reader->getInt32();
      break;
  case 91:
      loopsnum = reader->getInt32();
      return DRW::reserve( looplist, loopsnum);
  case 92:
      loop = std::make_shared<DRW_HatchLoop>(reader->getInt32());
      looplist.push_back(loop);
      if (reader->getInt32() & 2) {
          ispol = true;
          clearEntities();
          pline = std::make_shared<DRW_LWPolyline>();
          loop->objlist.push_back(pline);
      } else ispol = false;
      break;
  case 93:
      if (pline) pline->vertexnum = reader->getInt32();
      else if (loop) loop->numedges = reader->getInt32();//aqui reserve
      break;
  case 98: { // seed-point count; coords follow as group-10/20 pairs
      clearEntities();
      const int count = reader->getInt32();
      if (count > 0)
          DRW::reserve(seedPoints, count);
      break;
  }
  case 450:
      isGradient = reader->getInt32();
      break;
  case 451:
      gradReserved = reader->getInt32();
      break;
  case 452:
      singleColor = reader->getInt32();
      break;
  case 453: {
      const int n = reader->getInt32();
      if (n > 0)
          DRW::reserve(gradColors, n);
      break;
  }
  case 460:
      gradAngle = reader->getDouble();
      break;
  case 461:
      gradShift = reader->getDouble();
      break;
  case 462:
      gradTint = reader->getDouble();
      break;
  case 463: {
      DRW_Hatch::GradientStop stop;
      stop.value = reader->getDouble();
      gradColors.push_back(stop);
      break;
  }
  case 421:
      if (!gradColors.empty())
          gradColors.back().rgb = reader->getInt32();
      break;
  case 63:
      if (!gradColors.empty())
          gradColors.back().aciColor = reader->getInt32();
      else
          return DRW_Point::parseCode(code, reader);
      break;
  case 431:
      if (!gradColors.empty())
          gradColors.back().colorMethod = reader->getInt32();
      break;
  case 432:
      if (!gradColors.empty())
          gradColors.back().colorName = reader->getUtf8String();
      break;
  case 433:
      if (!gradColors.empty())
          gradColors.back().colorBookName = reader->getUtf8String();
      break;
  case 470:
      gradName = reader->getUtf8String();
      break;
  default:
      return DRW_Point::parseCode(code, reader);
  }

  return true;
6446}

6448bool DRW_MPolygon::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  // MPOLYGON shares HATCH's boundary/pattern/gradient codes, so delegate those
  // to DRW_Hatch::parseCode. It adds a trailer that plain HATCH never emits:
  //   63 / 421 / 430  fill color (ACI / RGB / book-name) — the filled area's
  //                   color, which may differ from the boundary outline color;
  //   11 / 21         boundary x-direction vector (no render impact; left to
  //                   the base, which ignores it outside an edge context);
  //   99              count of degenerate boundary paths.
  // 63/421 are also gradient sub-codes in HATCH, so only claim them here when no
  // gradient is being accumulated (gradColors empty) — otherwise defer to base.
  switch (code) {
  case 63:
      if (gradColors.empty()) { fillColorAci = reader->getInt32(); return true; }
      break;
  case 421:
      if (gradColors.empty()) { fillColorRgb = reader->getInt32(); return true; }
      break;
  case 430:
      fillColorName = reader->getUtf8String();
      return true;
  case 99:
      degenerateLoops = reader->getInt32();
      return true;
  default:
      break;
  }
  return DRW_Hatch::parseCode(code, reader);
6475}

6477// DRW_MPolygon::parseDwg — AcDbMPolygon DWG body.
6478// Layout mirrors HATCH except (per ACadSharp MPolygon / libreDWG dwg.spec):
6479//   * a leading BS `style` (DXF group 75) precedes the gradient block, and
6480//   * the trailer is a fill CMC + boundary x-direction (2RD) + degenerate-path
6481//     count (BL) instead of HATCH's pixel-size + seed points.
6482// The gradient/elevation/extrusion/name/solid/associative prologue and the whole
6483// boundary-loop body are identical, so they reuse DRW_Hatch::parseDwgBoundaryData.
6484// DWG runtime coverage uses testdata/mpolygon_solid.dwg, ODA-synthesized from
6485// the ezdxf-verified inline DXF in mpolygon_tests.cpp and confirmed with the
6486// dwg-parser oracle.
6487bool DRW_MPolygon::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  std::uint32_t totalBoundItems = 0;
  bool havePixelSize = false;
  if (version > DRW::AC1018) //2007+
      sBuf = &sBuff; //separate buffer for strings
  if (!DRW_Entity::parseDwg(version, buf, sBuf, bs))
      return false;
  DRW_DBG("\n***************************** parsing mpolygon *********************************************\n")DRW_dbg::dbg("\n***************************** parsing mpolygon *********************************************\n"
);

  // Leading BS style (group 75) — read once here and again after the loops
  // below (HATCH has only the latter); matches the reference parser, which
  // discards this first read.
  hstyle = buf->getBitShort();

  if (version > DRW::AC1015) { //2004+ gradient (same layout as HATCH)
      isGradient = buf->getBitLong();
      gradReserved = buf->getBitLong();
      gradAngle = buf->getBitDouble();
      gradShift = buf->getBitDouble();
      singleColor = buf->getBitLong();
      gradTint = buf->getBitDouble();
      std::int32_t numCol = buf->getBitLong();
      if (numCol > 0)
          DRW::reserve(gradColors, numCol);
      for (std::int32_t i = 0 ; i < numCol; ++i){
          DRW_Hatch::GradientStop stop;
          stop.value = buf->getBitDouble();
          buf->getBitShort();           // unknown short
          stop.rgb = buf->getBitLong();
          buf->getRawChar8();           // ignored color byte
          gradColors.push_back(stop);
      }
      gradName = sBuf->getVariableText(version, false);
  }
  basePoint.z = buf->getBitDouble();    // elevation
  extPoint = buf->get3BitDouble();
  name = sBuf->getVariableText(version, false);
  solid = buf->getBit();
  associative = buf->getBit();

  if (!parseDwgBoundaryData(version, buf, totalBoundItems, havePixelSize))
      return false;

  hstyle = buf->getBitShort();
  hpattern = buf->getBitShort();
  if (!solid){
      angle = buf->getBitDouble();
      scale = buf->getBitDouble();
      doubleflag = buf->getBit();
      deflines = buf->getBitShort();
      for (std::int32_t i = 0 ; i < deflines; ++i){
          buf->getBitDouble();          // line angle
          buf->getBitDouble();          // base x
          buf->getBitDouble();          // base y
          buf->getBitDouble();          // offset x
          buf->getBitDouble();          // offset y
          std::uint16_t numDashL = buf->getBitShort();
          for (std::uint16_t d = 0 ; d < numDashL; ++d)
              buf->getBitDouble();      // dash length
      }
  }

  // MPOLYGON trailer (differs from HATCH): fill CMC + x-direction + degenerate
  // path count. No pixel size / seed points here.
  std::int32_t rgb = -1;
  UTF8STRINGstd::string colName;
  fillColorAci = static_cast<int>(buf->getCmColor(version, &rgb, sBuf, &colName));
  fillColorRgb = rgb;
  fillColorName = colName;
  DRW_Coord xdir = buf->get2RawDouble();
  xDirX = xdir.x;
  xDirY = xdir.y;
  degenerateLoops = buf->getBitLong();

  if (!DRW_Entity::parseDwgEntHandle(version, buf))
      return false;
  for (std::uint32_t i = 0 ; i < totalBoundItems; ++i)
      buf->getHandle();                 // boundary-source handles
  return buf->isGood();
6568}

6570// Shared DWG boundary-loop reader for HATCH and MPOLYGON (ODA §20.4.36).
6571// Reads the loop count and, per loop, the derived-boundary flag plus its edge
6572// list or polyline. Accumulates the running boundary-source-handle total and
6573// whether any loop is derived (needs a trailing pixel size). Extracted from
6574// DRW_Hatch::parseDwg so DRW_MPolygon::parseDwg reuses the identical body while
6575// supplying its own differing leading (BS style) and trailing (fill CMC +
6576// x-direction + degenerate count) field order.
6577bool DRW_MPolygon::encodeDwg(DRW::Version version, dwgBufferW *buf,
                           std::uint32_t bs, dwgBufferW *strBuf,
                           dwgBufferW *handleBuf) {
  (void)bs;
  oType = kDwgClassNum;
  if (!encodeDwgCommon(version, buf, strBuf))
      return false;

  dwgBufferW *sb = strBuf ? strBuf : buf;

  // AcDbMPolygon has a leading style field before the HATCH-like gradient
  // prologue. The same style is emitted again after the boundary data.
  buf->putBitShort(static_cast<std::uint16_t>(hstyle));
  encodeDwgGradientData(version, buf, sb);

  buf->putBitDouble(basePoint.z);
  buf->put3BitDouble(extPoint);
  sb->putVariableText(version, name);
  buf->putBit(static_cast<std::uint8_t>(solid));
  buf->putBit(static_cast<std::uint8_t>(associative));
  if (!encodeDwgBoundaryData(version, buf)) return false;

  buf->putBitShort(static_cast<std::uint16_t>(hstyle));
  buf->putBitShort(static_cast<std::uint16_t>(hpattern));

  if (!solid) {
      buf->putBitDouble(angle);
      buf->putBitDouble(scale);
      buf->putBit(static_cast<std::uint8_t>(doubleflag));
      buf->putBitShort(static_cast<std::uint16_t>(patternLines.size()));
      for (const PatternLine& pl : patternLines) {
          buf->putBitDouble(pl.angle);
          buf->putBitDouble(pl.baseX);
          buf->putBitDouble(pl.baseY);
          buf->putBitDouble(pl.offsetX);
          buf->putBitDouble(pl.offsetY);
          buf->putBitShort(static_cast<std::uint16_t>(pl.dashList.size()));
          for (double dash : pl.dashList)
              buf->putBitDouble(dash);
      }
  }

  buf->putCmColor(version,
                  static_cast<std::uint16_t>(fillColorAci),
                  fillColorRgb,
                  fillColorName,
                  {},
                  sb);
  buf->put2RawDouble(DRW_Coord{xDirX, xDirY, 0.0});
  buf->putBitLong(degenerateLoops);

  return encodeDwgEntHandle(version, buf, handleBuf);
6629}

6631bool DRW_Hatch::parseDwgBoundaryData(DRW::Version version, dwgBuffer *buf,
                                   std::uint32_t &totalBoundItems, bool &havePixelSize) {
  loopsnum = buf->getBitLong();
  DRW_DBG("solid: ")DRW_dbg::dbg("solid: "); DRW_DBG(solid)DRW_dbg::dbg(solid); DRW_DBG(" associative: ")DRW_dbg::dbg(" associative: "); DRW_DBG(associative)DRW_dbg::dbg(associative);
  DRW_DBG(" loopsnum: ")DRW_dbg::dbg(" loopsnum: "); DRW_DBG(loopsnum)DRW_dbg::dbg(loopsnum); DRW_DBG("\n")DRW_dbg::dbg("\n");

  //read loops
  for (std::int32_t i = 0 ; i < loopsnum; ++i){
      loop = std::make_shared<DRW_HatchLoop>(buf->getBitLong());
      havePixelSize = havePixelSize || ((loop->type & 4) != 0);
      DRW_DBG(" loop[")DRW_dbg::dbg(" loop["); DRW_DBG(i)DRW_dbg::dbg(i); DRW_DBG("] type: ")DRW_dbg::dbg("] type: "); DRW_DBG(loop->type)DRW_dbg::dbg(loop->type);
      if (!(loop->type & 2)){ //Not polyline
          std::int32_t numPathSeg = buf->getBitLong();
          DRW_DBG(" numPathSeg: ")DRW_dbg::dbg(" numPathSeg: "); DRW_DBG(numPathSeg)DRW_dbg::dbg(numPathSeg); DRW_DBG("\n")DRW_dbg::dbg("\n");
          for (std::int32_t j = 0; j<numPathSeg;++j){
              std::uint8_t typePath = buf->getRawChar8();
              DRW_DBG("  seg[")DRW_dbg::dbg("  seg["); DRW_DBG(j)DRW_dbg::dbg(j); DRW_DBG("] typePath: ")DRW_dbg::dbg("] typePath: "); DRW_DBG(typePath)DRW_dbg::dbg(typePath); DRW_DBG("\n")DRW_dbg::dbg("\n");
              if (typePath == 1){ //line
                  addLine();
                  line->basePoint = buf->get2RawDouble();
                  line->secPoint = buf->get2RawDouble();
              } else if (typePath == 2){ //circle arc
                  addArc();
                  arc->basePoint = buf->get2RawDouble();
                  arc->radious = buf->getBitDouble();
                  arc->staangle = buf->getBitDouble();
                  arc->endangle = buf->getBitDouble();
                  arc->isccw = buf->getBit();
              } else if (typePath == 3){ //ellipse arc
                  addEllipse();
                  ellipse->basePoint = buf->get2RawDouble();
                  ellipse->secPoint = buf->get2RawDouble();
                  ellipse->ratio = buf->getBitDouble();
                  ellipse->staparam = buf->getBitDouble();
                  ellipse->endparam = buf->getBitDouble();
                  ellipse->isccw = buf->getBit();
              } else if (typePath == 4){ //spline
                  addSpline();
                  spline->degree = buf->getBitLong();
                  bool isRational = buf->getBit();
                  spline->flags |= (isRational << 2); //rational
                  spline->flags |= (buf->getBit() << 1); //periodic
                  spline->nknots = buf->getBitLong();
                  if (!DRW::reserve( spline->knotslist, spline->nknots)) {
                      return false;
                  }
                  spline->ncontrol = buf->getBitLong();
                  if (!DRW::reserve( spline->controllist, spline->ncontrol)) {
                      return false;
                  }
                  for (std::int32_t j = 0; j < spline->nknots;++j){
                      spline->knotslist.push_back (buf->getBitDouble());
                  }
                  for (std::int32_t j = 0; j < spline->ncontrol;++j){
                      std::shared_ptr<DRW_Coord> crd = std::make_shared<DRW_Coord>(buf->get2RawDouble());
                      if(isRational)
                          crd->z =  buf->getBitDouble(); //RLZ: investigate how store weight
                      spline->controllist.push_back(crd);
                  }
                  if (version > DRW::AC1021) { //2010+
                      spline->nfit = buf->getBitLong();
                      // Fit points AND the start/end tangents are present only
                      // when nfit > 0 (matches ACadSharp's `if (nfitPoints > 0)`).
                      // Reading the two tangents unconditionally on an nfit==0
                      // spline edge over-runs the entity body and fails the parse
                      // (e.g. svg/export_sample.dwg: a degree-3 non-rational
                      // spline boundary edge with 9 control points / 0 fit points).
                      if (spline->nfit > 0) {
                          if (!DRW::reserve( spline->fitlist, spline->nfit)) {
                              return false;
                          }
                          for (std::int32_t j = 0; j < spline->nfit;++j){
                              std::shared_ptr<DRW_Coord> crd = std::make_shared<DRW_Coord>(buf->get2RawDouble());
                              spline->fitlist.push_back(crd);
                          }
                          spline->tgStart = buf->get2RawDouble();
                          spline->tgEnd = buf->get2RawDouble();
                      }
                  }
              }
          }
      } else { //end not pline, start polyline
          pline = std::make_shared<DRW_LWPolyline>();
          bool asBulge = buf->getBit();
          pline->flags = buf->getBit();//closed bit
          std::int32_t numVert = buf->getBitLong();
          DRW_DBG(" asBulge: ")DRW_dbg::dbg(" asBulge: "); DRW_DBG(asBulge)DRW_dbg::dbg(asBulge); DRW_DBG(" closed: ")DRW_dbg::dbg(" closed: "); DRW_DBG(pline->flags)DRW_dbg::dbg(pline->flags);
          DRW_DBG(" numVert: ")DRW_dbg::dbg(" numVert: "); DRW_DBG(numVert)DRW_dbg::dbg(numVert); DRW_DBG("\n")DRW_dbg::dbg("\n");
          for (std::int32_t j = 0; j<numVert;++j){
              DRW_Vertex2D v;
              v.x = buf->getRawDouble();
              v.y = buf->getRawDouble();
              if (asBulge)
                  v.bulge = buf->getBitDouble();
              pline->addVertex(v);
          }
          loop->objlist.push_back(pline);
      }//end polyline
      loop->update();
      looplist.push_back(loop);
      totalBoundItems += buf->getBitLong();
      DRW_DBG(" totalBoundItems: ")DRW_dbg::dbg(" totalBoundItems: "); DRW_DBG(totalBoundItems)DRW_dbg::dbg(totalBoundItems);
  } //end read loops
  return true;
6735}

6737bool DRW_Hatch::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  std::uint32_t totalBoundItems = 0;
  bool havePixelSize = false;

  if (version > DRW::AC1018) {//2007+
      sBuf = &sBuff; //separate buffer for strings
  }
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing hatch *********************************************\n")DRW_dbg::dbg("\n***************************** parsing hatch *********************************************\n"
);

  //Gradient data, RLZ: is ok or if grad > 0 continue read ?
  if (version > DRW::AC1015) { //2004+
      isGradient = buf->getBitLong();
      DRW_DBG("is Gradient: ")DRW_dbg::dbg("is Gradient: "); DRW_DBG(isGradient)DRW_dbg::dbg(isGradient);
      gradReserved = buf->getBitLong();
      DRW_DBG(" reserved: ")DRW_dbg::dbg(" reserved: "); DRW_DBG(gradReserved)DRW_dbg::dbg(gradReserved);
      gradAngle = buf->getBitDouble();
      DRW_DBG(" Gradient angle: ")DRW_dbg::dbg(" Gradient angle: "); DRW_DBG(gradAngle)DRW_dbg::dbg(gradAngle);
      gradShift = buf->getBitDouble();
      DRW_DBG(" Gradient shift: ")DRW_dbg::dbg(" Gradient shift: "); DRW_DBG(gradShift)DRW_dbg::dbg(gradShift);
      singleColor = buf->getBitLong();
      DRW_DBG("\nsingle color Grad: ")DRW_dbg::dbg("\nsingle color Grad: "); DRW_DBG(singleColor)DRW_dbg::dbg(singleColor);
      gradTint = buf->getBitDouble();
      DRW_DBG(" Gradient tint: ")DRW_dbg::dbg(" Gradient tint: "); DRW_DBG(gradTint)DRW_dbg::dbg(gradTint);
      std::int32_t numCol = buf->getBitLong();
      DRW_DBG(" num colors: ")DRW_dbg::dbg(" num colors: "); DRW_DBG(numCol)DRW_dbg::dbg(numCol);
      if (numCol > 0)
          DRW::reserve(gradColors, numCol);
      for (std::int32_t i = 0 ; i < numCol; ++i){
          GradientStop stop;
          // First field is the stop position (per libreDWG: BD/unkDouble holds
          // the stop value in [0,1]); falls back to even spacing if missing.
          stop.value = buf->getBitDouble();
          DRW_DBG("\nstop value: ")DRW_dbg::dbg("\nstop value: "); DRW_DBG(stop.value)DRW_dbg::dbg(stop.value);
          std::uint16_t unkShort = buf->getBitShort();
          DRW_DBG(" unkShort: ")DRW_dbg::dbg(" unkShort: "); DRW_DBG(unkShort)DRW_dbg::dbg(unkShort);
          stop.rgb = buf->getBitLong();
          DRW_DBG(" rgb color: ")DRW_dbg::dbg(" rgb color: "); DRW_DBG(stop.rgb)DRW_dbg::dbg(stop.rgb);
          std::uint8_t ignCol = buf->getRawChar8();
          DRW_DBG(" ignored color: ")DRW_dbg::dbg(" ignored color: "); DRW_DBG(ignCol)DRW_dbg::dbg(ignCol);
          gradColors.push_back(stop);
      }
      gradName = sBuf->getVariableText(version, false);
      DRW_DBG("\ngradient name: ")DRW_dbg::dbg("\ngradient name: "); DRW_DBG(gradName.c_str())DRW_dbg::dbg(gradName.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  basePoint.z = buf->getBitDouble();
  extPoint = buf->get3BitDouble();
  DRW_DBG("base point: ")DRW_dbg::dbg("base point: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
  DRW_DBG("\nextrusion: ")DRW_dbg::dbg("\nextrusion: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z);
  name = sBuf->getVariableText(version, false);
  DRW_DBG("\nhatch pattern name: ")DRW_dbg::dbg("\nhatch pattern name: "); DRW_DBG(name.c_str())DRW_dbg::dbg(name.c_str()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  solid = buf->getBit();
  associative = buf->getBit();
  if (!parseDwgBoundaryData(version, buf, totalBoundItems, havePixelSize))
      return false;

  hstyle = buf->getBitShort();
  hpattern = buf->getBitShort();
  DRW_DBG("\nhatch style: ")DRW_dbg::dbg("\nhatch style: "); DRW_DBG(hstyle)DRW_dbg::dbg(hstyle); DRW_DBG(" pattern type")DRW_dbg::dbg(" pattern type"); DRW_DBG(hpattern)DRW_dbg::dbg(hpattern);
  if (!solid){
      angle = buf->getBitDouble();
      scale = buf->getBitDouble();
      doubleflag = buf->getBit();
      deflines = buf->getBitShort();
      for (std::int32_t i = 0 ; i < deflines; ++i){
          DRW_Coord ptL, offL;
          double angleL = buf->getBitDouble();
          ptL.x = buf->getBitDouble();
          ptL.y = buf->getBitDouble();
          offL.x = buf->getBitDouble();
          offL.y = buf->getBitDouble();
          std::uint16_t numDashL = buf->getBitShort();
          DRW_DBG("\ndef line: ")DRW_dbg::dbg("\ndef line: "); DRW_DBG(angleL)DRW_dbg::dbg(angleL); DRW_DBG(",")DRW_dbg::dbg(","); DRW_DBG(ptL.x)DRW_dbg::dbg(ptL.x); DRW_DBG(",")DRW_dbg::dbg(","); DRW_DBG(ptL.y)DRW_dbg::dbg(ptL.y);
          DRW_DBG(",")DRW_dbg::dbg(","); DRW_DBG(offL.x)DRW_dbg::dbg(offL.x); DRW_DBG(",")DRW_dbg::dbg(","); DRW_DBG(offL.y)DRW_dbg::dbg(offL.y); DRW_DBG(",")DRW_dbg::dbg(","); DRW_DBG(angleL)DRW_dbg::dbg(angleL);
          for (std::uint16_t i = 0 ; i < numDashL; ++i){
              double lengthL = buf->getBitDouble();
              DRW_DBG(",")DRW_dbg::dbg(","); DRW_DBG(lengthL)DRW_dbg::dbg(lengthL);
          }
      }//end deflines
  } //end not solid

  if (havePixelSize){
      double pixsize = buf->getBitDouble();
      DRW_DBG("\npixel size: ")DRW_dbg::dbg("\npixel size: "); DRW_DBG(pixsize)DRW_dbg::dbg(pixsize);
  }
  std::int32_t numSeedPoints = buf->getBitLong();
  DRW_DBG("\nnum Seed Points  ")DRW_dbg::dbg("\nnum Seed Points  "); DRW_DBG(numSeedPoints)DRW_dbg::dbg(numSeedPoints);
  if (numSeedPoints > 0)
      DRW::reserve(seedPoints, numSeedPoints);
  for (std::int32_t i = 0 ; i < numSeedPoints; ++i){
      DRW_Coord seedPt;
      seedPt.x = buf->getRawDouble();
      seedPt.y = buf->getRawDouble();
      DRW_DBG("\n  ")DRW_dbg::dbg("\n  "); DRW_DBG(seedPt.x)DRW_dbg::dbg(seedPt.x); DRW_DBG(",")DRW_dbg::dbg(","); DRW_DBG(seedPt.y)DRW_dbg::dbg(seedPt.y);
      seedPoints.push_back(seedPt);
  }

  DRW_DBG("\n")DRW_dbg::dbg("\n");
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  for (std::uint32_t i = 0 ; i < totalBoundItems; ++i){
      dwgHandle biH = buf->getHandle();
      DRW_DBG("Boundary Items Handle: ")DRW_dbg::dbg("Boundary Items Handle: "); DRW_DBGHL(biH.code, biH.size, biH.ref)DRW_dbg::dbgHL(biH.code, biH.size, biH.ref);
  }
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
6849//    RS crc;   //RS */
  return buf->isGood();
6851}

6853void DRW_Hatch::encodeDwgGradientData(DRW::Version version, dwgBufferW *buf,
                                    dwgBufferW *strBuf) const {
  if (version <= DRW::AC1015)
7
←
Assuming 'version' is > AC1015→
      return;

  dwgBufferW *sb = strBuf ? strBuf : buf;
8
←
Taking false branch→
9
←
Assuming 'strBuf' is null→
10
←
'?' condition is false→
  buf->putBitLong(isGradient);
11
←
Called C++ object pointer is null
  buf->putBitLong(gradReserved);
  buf->putBitDouble(gradAngle);
  buf->putBitDouble(gradShift);
  buf->putBitLong(singleColor);
  buf->putBitDouble(gradTint);
  buf->putBitLong(static_cast<std::int32_t>(gradColors.size()));
  for (const GradientStop& stop : gradColors) {
      buf->putBitDouble(stop.value);
      buf->putBitShort(static_cast<std::uint16_t>(stop.aciColor));
      buf->putBitLong(static_cast<std::uint32_t>(stop.rgb));
      buf->putRawChar8(0);
  }
  sb->putVariableText(version, gradName);
6873}

6875bool DRW_Hatch::encodeDwgBoundaryData(DRW::Version version, dwgBufferW *buf) const {
  buf->putBitLong(static_cast<std::int32_t>(looplist.size()));

  for (const auto& lp : looplist) {
      // Strip bit 4 (pixel-size flag): DRW_Hatch has no storage for the
      // associated pixelSize BD, so a reader would desync if the flag were
      // set and we then omitted the field.
      buf->putBitLong(lp->type & ~4);

      if (!(lp->type & 2)) {
          buf->putBitLong(static_cast<std::int32_t>(lp->objlist.size()));
          for (const auto& seg : lp->objlist) {
              if (const auto* ln = dynamic_cast<const DRW_Line*>(seg.get())) {
                  buf->putRawChar8(1);  // line
                  buf->put2RawDouble(ln->basePoint);
                  buf->put2RawDouble(ln->secPoint);
              } else if (const auto* arc = dynamic_cast<const DRW_Arc*>(seg.get())) {
                  buf->putRawChar8(2);  // circular arc
                  buf->put2RawDouble(arc->basePoint);
                  buf->putBitDouble(arc->radious);
                  buf->putBitDouble(arc->staangle);
                  buf->putBitDouble(arc->endangle);
                  buf->putBit(static_cast<std::uint8_t>(arc->isccw));
              } else if (const auto* el = dynamic_cast<const DRW_Ellipse*>(seg.get())) {
                  buf->putRawChar8(3);  // ellipse arc
                  buf->put2RawDouble(el->basePoint);
                  buf->put2RawDouble(el->secPoint);
                  buf->putBitDouble(el->ratio);
                  buf->putBitDouble(el->staparam);
                  buf->putBitDouble(el->endparam);
                  buf->putBit(static_cast<std::uint8_t>(el->isccw));
              } else if (const auto* sp = dynamic_cast<const DRW_Spline*>(seg.get())) {
                  buf->putRawChar8(4);  // spline
                  buf->putBitLong(sp->degree);
                  bool isRational = (sp->flags & 4) != 0;
                  bool isPeriodic = (sp->flags & 2) != 0;
                  buf->putBit(static_cast<std::uint8_t>(isRational));
                  buf->putBit(static_cast<std::uint8_t>(isPeriodic));
                  buf->putBitLong(static_cast<std::int32_t>(sp->knotslist.size()));
                  buf->putBitLong(static_cast<std::int32_t>(sp->controllist.size()));
                  for (double k : sp->knotslist)
                      buf->putBitDouble(k);
                  for (const auto& cp : sp->controllist) {
                      DRW_Coord c2{cp->x, cp->y, 0.0};
                      buf->put2RawDouble(c2);
                      if (isRational)
                          buf->putBitDouble(cp->z);
                  }
                  if (version > DRW::AC1021) {
                      buf->putBitLong(static_cast<std::int32_t>(sp->fitlist.size()));
                      for (const auto& fp : sp->fitlist) {
                          DRW_Coord f2{fp->x, fp->y, 0.0};
                          buf->put2RawDouble(f2);
                      }
                      buf->put2RawDouble(sp->tgStart);
                      buf->put2RawDouble(sp->tgEnd);
                  }
              } else {
                  return false;
              }
          }
      } else {
          const DRW_LWPolyline* pl = nullptr;
          if (!lp->objlist.empty())
              pl = dynamic_cast<const DRW_LWPolyline*>(lp->objlist[0].get());
          if (!pl)
              return false;

          bool asBulge = false;
          for (const auto& v : pl->vertlist)
              if (v->bulge != 0.0) { asBulge = true; break; }

          buf->putBit(static_cast<std::uint8_t>(asBulge));
          buf->putBit(static_cast<std::uint8_t>(pl->flags & 1));
          buf->putBitLong(static_cast<std::int32_t>(pl->vertlist.size()));
          for (const auto& v : pl->vertlist) {
              buf->putRawDouble(v->x);
              buf->putRawDouble(v->y);
              if (asBulge)
                  buf->putBitDouble(v->bulge);
          }
      }

      buf->putBitLong(0);  // numBoundHandles for this loop (0 = non-associative)
  }

  return true;
6962}

6964bool DRW_Hatch::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 78;  // HATCH class id — see dwgreader.cpp:1380
  if (!encodeDwgCommon(version, buf)) return false;
1
Assuming the condition is false→

  dwgBufferW *sb = strBuf ? strBuf : buf;
2
←
Taking false branch→
3
←
Assuming 'strBuf' is null→
4
←
'?' condition is false→
  encodeDwgGradientData(version, buf, sb);
5
←
Passing 'sb' via 2nd parameter 'buf'→
6
←
Calling 'DRW_Hatch::encodeDwgGradientData'→

  buf->putBitDouble(basePoint.z);            // BD: elevation
  buf->put3BitDouble(extPoint);              // 3BD: extrusion (NOT BE-style for HATCH)
  sb->putVariableText(version, name);        // TV: hatch pattern name
  buf->putBit(static_cast<std::uint8_t>(solid));
  buf->putBit(static_cast<std::uint8_t>(associative));
  if (!encodeDwgBoundaryData(version, buf)) return false;

  buf->putBitShort(static_cast<std::uint16_t>(hstyle));
  buf->putBitShort(static_cast<std::uint16_t>(hpattern));

  if (!solid) {
      buf->putBitDouble(angle);
      buf->putBitDouble(scale);
      buf->putBit(static_cast<std::uint8_t>(doubleflag));
      // Pattern definition lines: the parseDwg reads them but DRW_Hatch
      // has no storage for per-line data, so emit 0 here.
      buf->putBitShort(0);  // deflines = 0
  }

  // pixelSize BD omitted: bit 4 is stripped from every emitted loop type
  // above (DRW_Hatch has no pixelSize storage), so havePixelSize is always
  // false on the read side and parseDwg never expects this field.

  buf->putBitLong(static_cast<std::int32_t>(seedPoints.size()));
  for (const auto& sp : seedPoints) {
      buf->putRawDouble(sp.x);
      buf->putRawDouble(sp.y);
  }

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  return true;
7003}

7005bool DRW_Spline::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 210:
      normalVec.x = reader->getDouble();
      break;
  case 220:
      normalVec.y = reader->getDouble();
      break;
  case 230:
      normalVec.z = reader->getDouble();
      break;
  case 12:
      tgStart.x = reader->getDouble();
      break;
  case 22:
      tgStart.y = reader->getDouble();
      break;
  case 32:
      tgStart.z = reader->getDouble();
      break;
  case 13:
      tgEnd.x = reader->getDouble();
      break;
  case 23:
      tgEnd.y = reader->getDouble();
      break;
  case 33:
      tgEnd.z = reader->getDouble();
      break;
  case 70:
      flags = reader->getInt32();
      break;
  case 71:
      degree = reader->getInt32();
      break;
  case 72:
      nknots = reader->getInt32();
      break;
  case 73:
      ncontrol = reader->getInt32();
      break;
  case 74:
      nfit = reader->getInt32();
      break;
  case 42:
      tolknot = reader->getDouble();
      break;
  case 43:
      tolcontrol = reader->getDouble();
      break;
  case 44:
      tolfit = reader->getDouble();
      break;
  case 10: {
      controlpoint = std::make_shared<DRW_Coord>();
      controllist.push_back(controlpoint);
      controlpoint->x = reader->getDouble();
      break; }
  case 20:
      if(controlpoint)
          controlpoint->y = reader->getDouble();
      break;
  case 30:
      if(controlpoint)
          controlpoint->z = reader->getDouble();
      break;
  case 11: {
      fitpoint = std::make_shared<DRW_Coord>();
      fitlist.push_back(fitpoint);
      fitpoint->x = reader->getDouble();
      break; }
  case 21:
      if(fitpoint)
          fitpoint->y = reader->getDouble();
      break;
  case 31:
      if(fitpoint)
          fitpoint->z = reader->getDouble();
      break;
  case 40:
      knotslist.push_back(reader->getDouble());
      break;
  case 41:
      weightlist.push_back(reader->getDouble());
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }

  return true;
7095}

7097bool DRW_Helix::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  if (code == 100) {
      const std::string subclass = reader->getString();
      m_parsingHelixSubclass = (subclass == "AcDbHelix");
      return true;
  }

  if (!m_parsingHelixSubclass)
      return DRW_Spline::parseCode(code, reader);

  switch (code) {
  case 90:
      m_majorVersion = reader->getInt32();
      break;
  case 91:
      m_maintVersion = reader->getInt32();
      break;
  case 10:
      axisBasePt.x = reader->getDouble();
      break;
  case 20:
      axisBasePt.y = reader->getDouble();
      break;
  case 30:
      axisBasePt.z = reader->getDouble();
      break;
  case 11:
      startPt.x = reader->getDouble();
      break;
  case 21:
      startPt.y = reader->getDouble();
      break;
  case 31:
      startPt.z = reader->getDouble();
      break;
  case 12:
      axisVector.x = reader->getDouble();
      break;
  case 22:
      axisVector.y = reader->getDouble();
      break;
  case 32:
      axisVector.z = reader->getDouble();
      break;
  case 40:
      radius = reader->getDouble();
      break;
  case 41:
      turns = reader->getDouble();
      break;
  case 42:
      turnHeight = reader->getDouble();
      break;
  case 290:
      handedness = reader->getInt32() != 0;
      break;
  case 280:
      constraintType = static_cast<std::uint8_t>(reader->getInt32() & 0xff);
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }

  return true;
7161}

7163bool DRW_Spline::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  if (!parseDwgSplineBody(version, buf))
      return false;
  /* Common Entity Handle Data */
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
7173//    RS crc;   //RS */
  return buf->isGood();
7175}

7177// Spline body decode: the scenario/degree/knots/ctrl/fit section, WITHOUT
7178// the leading DRW_Entity::parseDwg(common) or the trailing parseDwgEntHandle.
7179// Factored out so DRW_Helix can reuse the identical spline payload before its
7180// AcDbHelix trailer (Phase 8a-1).
7181bool DRW_Spline::parseDwgSplineBody(DRW::Version version, dwgBuffer *buf){
  DRW_DBG("\n***************************** parsing spline *********************************************\n")DRW_dbg::dbg("\n***************************** parsing spline *********************************************\n"
);
  std::uint8_t weight = 0; // RLZ ??? flags, weight, code 70, bit 4 (16)

  std::int32_t scenario = buf->getBitLong();
  m_scenario = scenario;
  DRW_DBG("scenario: ")DRW_dbg::dbg("scenario: "); DRW_DBG(scenario)DRW_dbg::dbg(scenario);
  if (version > DRW::AC1024) {
      std::int32_t splFlag1 = buf->getBitLong();
      m_splineFlags1 = splFlag1;
      std::int32_t knotParam = buf->getBitLong();
      m_knotParam = knotParam;
      if (knotParam == kSplineKnotParamCustom || !(splFlag1 & kSplineFlagUseKnotParameter)) {
          scenario = 1;
      } else if (splFlag1 & kSplineFlagMethodFitPoints) {
          scenario = 2;
      }
      m_scenario = scenario;
      DRW_DBG(" 2013 splFlag1: ")DRW_dbg::dbg(" 2013 splFlag1: "); DRW_DBG(splFlag1)DRW_dbg::dbg(splFlag1);
      DRW_DBG(" 2013 knotParam: ")DRW_dbg::dbg(" 2013 knotParam: "); DRW_DBG(knotParam)DRW_dbg::dbg(knotParam);
7201//        DRW_DBG("unk bit: "); DRW_DBG(buf->getBit());
  }
  degree = buf->getBitLong(); //RLZ: code 71, verify with dxf
  DRW_DBG(" degree: ")DRW_dbg::dbg(" degree: "); DRW_DBG(degree)DRW_dbg::dbg(degree); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (!isValidSplineDegree(degree)) {
      DRW_DBG("\ndwg Spline, invalid degree ")DRW_dbg::dbg("\ndwg Spline, invalid degree "); DRW_DBG(degree)DRW_dbg::dbg(degree); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return false;
  }
  if (scenario == 2) {
      flags = 8;//scenario 2 = not rational & planar
      if (m_splineFlags1 & kSplineFlagClosed)
          flags |= 1;
      tolfit = buf->getBitDouble();//BD
      DRW_DBG("flags: ")DRW_dbg::dbg("flags: "); DRW_DBG(flags)DRW_dbg::dbg(flags); DRW_DBG(" tolfit: ")DRW_dbg::dbg(" tolfit: "); DRW_DBG(tolfit)DRW_dbg::dbg(tolfit);
      tgStart =buf->get3BitDouble();
      DRW_DBG(" Start Tangent: ")DRW_dbg::dbg(" Start Tangent: "); DRW_DBGPT(tgStart.x, tgStart.y, tgStart.z)DRW_dbg::dbgPT(tgStart.x, tgStart.y, tgStart.z);
      tgEnd =buf->get3BitDouble();
      DRW_DBG("\nEnd Tangent: ")DRW_dbg::dbg("\nEnd Tangent: "); DRW_DBGPT(tgEnd.x, tgEnd.y, tgEnd.z)DRW_dbg::dbgPT(tgEnd.x, tgEnd.y, tgEnd.z);
      nfit = buf->getBitLong();
      if (!isValidFitSplineLayout(degree, nfit)) {
          DRW_DBG("\ndwg Spline, invalid fit layout degree/count: ")DRW_dbg::dbg("\ndwg Spline, invalid fit layout degree/count: "
);
          DRW_DBG(degree)DRW_dbg::dbg(degree); DRW_DBG("/")DRW_dbg::dbg("/"); DRW_DBG(nfit)DRW_dbg::dbg(nfit); DRW_DBG("\n")DRW_dbg::dbg("\n");
          return false;
      }
      DRW_DBG("\nnumber of fit points: ")DRW_dbg::dbg("\nnumber of fit points: "); DRW_DBG(nfit)DRW_dbg::dbg(nfit);
  } else if (scenario == 1) {
      flags = 8;//scenario 1 = rational & planar
      flags |= buf->getBit() << 2; //flags, rational, code 70, bit 2 (4)
      flags |= buf->getBit(); //flags, closed, code 70, bit 0 (1)
      flags |= buf->getBit() << 1; //flags, periodic, code 70, bit 1 (2)
      tolknot = buf->getBitDouble();
      tolcontrol = buf->getBitDouble();
      DRW_DBG("flags: ")DRW_dbg::dbg("flags: "); DRW_DBG(flags)DRW_dbg::dbg(flags); DRW_DBG(" knot tolerance: ")DRW_dbg::dbg(" knot tolerance: "); DRW_DBG(tolknot)DRW_dbg::dbg(tolknot);
      DRW_DBG(" control point tolerance: ")DRW_dbg::dbg(" control point tolerance: "); DRW_DBG(tolcontrol)DRW_dbg::dbg(tolcontrol);
      nknots = buf->getBitLong();
      ncontrol = buf->getBitLong();
      if (!isValidControlSplineLayout(degree, nknots, ncontrol)) {
          DRW_DBG("\ndwg Spline, invalid control layout degree/knots/control: ")DRW_dbg::dbg("\ndwg Spline, invalid control layout degree/knots/control: "
);
          DRW_DBG(degree)DRW_dbg::dbg(degree); DRW_DBG("/")DRW_dbg::dbg("/"); DRW_DBG(nknots)DRW_dbg::dbg(nknots); DRW_DBG("/")DRW_dbg::dbg("/");
          DRW_DBG(ncontrol)DRW_dbg::dbg(ncontrol); DRW_DBG("\n")DRW_dbg::dbg("\n");
          return false;
      }
      weight = buf->getBit(); // flags bit 4: weights present (code 70)
      if (weight) flags |= 0x10;
      DRW_DBG("\nnum of knots: ")DRW_dbg::dbg("\nnum of knots: "); DRW_DBG(nknots)DRW_dbg::dbg(nknots); DRW_DBG(" num of control pt: ")DRW_dbg::dbg(" num of control pt: ");
      DRW_DBG(ncontrol)DRW_dbg::dbg(ncontrol); DRW_DBG(" weight bit: ")DRW_dbg::dbg(" weight bit: "); DRW_DBG(weight)DRW_dbg::dbg(weight);
  } else {
      DRW_DBG("\ndwg Spline, unknown scenario ")DRW_dbg::dbg("\ndwg Spline, unknown scenario "); DRW_DBG(scenario)DRW_dbg::dbg(scenario);
      DRW_DBG(" (expected 1 or 2)\n")DRW_dbg::dbg(" (expected 1 or 2)\n");
      return false; //RLZ: from doc only 1 or 2 are ok ?
  }

  if (!DRW::reserve( knotslist, nknots)) {
      return false;
  }
  for (std::int32_t i= 0; i<nknots; ++i){
      knotslist.push_back (buf->getBitDouble());
  }
  if (!DRW::reserve( controllist, ncontrol)) {
      return false;
  }
  if (weight && !DRW::reserve(weightlist, ncontrol)) {
      return false;
  }
  for (std::int32_t i= 0; i<ncontrol; ++i){
      controllist.push_back(std::make_shared<DRW_Coord>(buf->get3BitDouble()));
      if (weight) {
          //per-control-point weight; required for hyperbola/parabola
          //conic detection in consumers (e.g. LibreCAD addSpline)
          double w = buf->getBitDouble(); //RLZ Warning: D (BD or RD)
          weightlist.push_back(w);
          DRW_DBG("\n w: ")DRW_dbg::dbg("\n w: "); DRW_DBG(w)DRW_dbg::dbg(w);
      }
  }
  if (!DRW::reserve( fitlist, nfit)) {
      return false;
  }
  for (std::int32_t i= 0; i<nfit; ++i)
      fitlist.push_back(std::make_shared<DRW_Coord>(buf->get3BitDouble()));

  if (DRW_DBGGLDRW_dbg::getInstance()->getLevel() == DRW_dbg::Level::Debug) {
      DRW_DBG("\nknots list: ")DRW_dbg::dbg("\nknots list: ");
      for (auto const& v: knotslist) {
          DRW_DBG("\n")DRW_dbg::dbg("\n"); DRW_DBG(v)DRW_dbg::dbg(v);
      }
      DRW_DBG("\ncontrol point list: ")DRW_dbg::dbg("\ncontrol point list: ");
      for (auto const& v: controllist) {
          DRW_DBG("\n")DRW_dbg::dbg("\n"); DRW_DBGPT(v->x, v->y, v->z)DRW_dbg::dbgPT(v->x, v->y, v->z);
      }
      DRW_DBG("\nfit point list: ")DRW_dbg::dbg("\nfit point list: ");
      for (auto const& v: fitlist) {
          DRW_DBG("\n")DRW_dbg::dbg("\n"); DRW_DBGPT(v->x, v->y, v->z)DRW_dbg::dbgPT(v->x, v->y, v->z);
      }
  }

  return buf->isGood();
7297}

7299// AcDbHelix trailer order (libreDWG dwg2.spec:2493-2503):
7300//   major_version BL, maint_version BL, axis_base_pt 3BD, start_pt 3BD,
7301//   axis_vector 3BD, radius BD, turns BD, turn_height BD, handedness B,
7302//   constraint_type RC.
7303bool DRW_Helix::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  bool ret = DRW_Entity::parseDwg(version, buf, NULL__null, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing helix *********************************************\n")DRW_dbg::dbg("\n***************************** parsing helix *********************************************\n"
);
  if (!parseDwgSplineBody(version, buf))
      return false;

  // AcDbHelix trailer (see field order above).
  m_majorVersion = buf->getBitLong();
  m_maintVersion = buf->getBitLong();
  axisBasePt  = buf->get3BitDouble();
  startPt     = buf->get3BitDouble();
  axisVector  = buf->get3BitDouble();
  radius      = buf->getBitDouble();
  turns       = buf->getBitDouble();
  turnHeight  = buf->getBitDouble();
  handedness  = buf->getBit() != 0;
  constraintType = buf->getRawChar8();
  DRW_DBG("\nhelix radius: ")DRW_dbg::dbg("\nhelix radius: "); DRW_DBG(radius)DRW_dbg::dbg(radius); DRW_DBG(" turns: ")DRW_dbg::dbg(" turns: "); DRW_DBG(turns)DRW_dbg::dbg(turns);

  /* Common Entity Handle Data */
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
7328//    RS crc;   //RS */
  return buf->isGood();
7330}

7332bool DRW_Image::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 12:
      vVector.x = reader->getDouble();
      break;
  case 22:
      vVector.y = reader->getDouble();
      break;
  case 32:
      vVector.z = reader->getDouble();
      break;
  case 13:
      sizeu = reader->getDouble();
      break;
  case 23:
      sizev = reader->getDouble();
      break;
  case 340:
      ref = reader->getHandleString();
      break;
  case 280:
      clip = reader->getInt32();
      break;
  case 281:
      brightness = reader->getInt32();
      break;
  case 282:
      contrast = reader->getInt32();
      break;
  case 283:
      fade = reader->getInt32();
      break;
  case 71:
      m_clipBoundaryType = reader->getInt32();
      break;
  case 91:
      // WIPEOUT: number of polygon vertices.  We don't pre-size — the count
      // is informational and the 14/24 pairs follow in order.
      clipPath.clear();
      clipPath.reserve(static_cast<size_t>(reader->getInt32()));
      break;
  case 14:
      // WIPEOUT polygon vertex x — start a new vertex.  Group 24 (y) follows.
      clipPath.emplace_back(reader->getDouble(), 0.0);
      break;
  case 24:
      // WIPEOUT polygon vertex y — complete the most recently started vertex.
      if (!clipPath.empty()) {
          clipPath.back().y = reader->getDouble();
      }
      break;
  case 290:
      // R2010+ Clip mode (IMAGE/WIPEOUT, ODA spec §20.4.80):
      // 0 = mask outside the polygon, 1 = mask inside.
      clipMode = reader->getBool();
      break;
  default:
      return DRW_Line::parseCode(code, reader);
  }

  return true;
7393}

7395bool DRW_Image::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018) {//2007+
      sBuf = &sBuff; //separate buffer for strings
  }
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing image *********************************************\n")DRW_dbg::dbg("\n***************************** parsing image *********************************************\n"
);

  std::int32_t classVersion = buf->getBitLong();
  DRW_DBG("class Version: ")DRW_dbg::dbg("class Version: "); DRW_DBG(classVersion)DRW_dbg::dbg(classVersion);
  basePoint = buf->get3BitDouble();
  DRW_DBG("\nbase point: ")DRW_dbg::dbg("\nbase point: "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
  secPoint = buf->get3BitDouble();
  DRW_DBG("\nU vector: ")DRW_dbg::dbg("\nU vector: "); DRW_DBGPT(secPoint.x, secPoint.y, secPoint.z)DRW_dbg::dbgPT(secPoint.x, secPoint.y, secPoint.z);
  vVector = buf->get3BitDouble();
  DRW_DBG("\nV vector: ")DRW_dbg::dbg("\nV vector: "); DRW_DBGPT(vVector.x, vVector.y, vVector.z)DRW_dbg::dbgPT(vVector.x, vVector.y, vVector.z);
  sizeu = buf->getRawDouble();
  sizev = buf->getRawDouble();
  DRW_DBG("\nsize U: ")DRW_dbg::dbg("\nsize U: "); DRW_DBG(sizeu)DRW_dbg::dbg(sizeu); DRW_DBG("\nsize V: ")DRW_dbg::dbg("\nsize V: "); DRW_DBG(sizev)DRW_dbg::dbg(sizev);
  m_displayProps = buf->getBitShort();
  DRW_DBG("\ndisplay props: ")DRW_dbg::dbg("\ndisplay props: "); DRW_DBG(m_displayProps)DRW_dbg::dbg(m_displayProps);
  clip = buf->getBit();
  brightness = buf->getRawChar8();
  contrast = buf->getRawChar8();
  fade = buf->getRawChar8();
  if (version > DRW::AC1021){ //2010+
      clipMode = buf->getBit() != 0;  // ODA §20.4.80: Clip mode B (R2010+)
  }
  m_clipBoundaryType = buf->getBitShort();
  clipPath.clear();
  if (m_clipBoundaryType == 0) {
      // No clip boundary payload.
  } else if (m_clipBoundaryType == 1){
      // rectangular clip: lower-left and upper-right corners; expand to a
      // 4-vertex polygon so downstream consumers can treat both kinds uniformly.
      DRW_Coord ll = buf->get2RawDouble();
      DRW_Coord ur = buf->get2RawDouble();
      clipPath.push_back(ll);
      clipPath.push_back(DRW_Coord(ur.x, ll.y, 0.0));
      clipPath.push_back(ur);
      clipPath.push_back(DRW_Coord(ll.x, ur.y, 0.0));
  } else if (m_clipBoundaryType == 2) {
      std::int32_t numVerts = buf->getBitLong();
      if (numVerts < 0 || numVerts > 100000)
          return false;
      clipPath.reserve(numVerts);
      for (int i= 0; i< numVerts;++i)
          clipPath.push_back(buf->get2RawDouble());
  } else {
      DRW_DBG("unsupported image clip type: ")DRW_dbg::dbg("unsupported image clip type: "); DRW_DBG(m_clipBoundaryType)DRW_dbg::dbg(m_clipBoundaryType); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return false;
  }

  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  dwgHandle biH = buf->getHandle();
  DRW_DBG("ImageDef Handle: ")DRW_dbg::dbg("ImageDef Handle: "); DRW_DBGHL(biH.code, biH.size, biH.ref)DRW_dbg::dbgHL(biH.code, biH.size, biH.ref);
  ref = biH.ref;
  biH = buf->getHandle();
  DRW_DBG("ImageDefReactor Handle: ")DRW_dbg::dbg("ImageDefReactor Handle: "); DRW_DBGHL(biH.code, biH.size, biH.ref)DRW_dbg::dbgHL(biH.code, biH.size, biH.ref);
  m_imageDefReactorHandle = biH.ref;
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
7463//    RS crc;   //RS */
  return buf->isGood();
7465}

7467// DRW_Image::encodeDwg — inverse of DRW_Image::parseDwg above (libreDWG
7468// dwg.spec:5533-5563).  Body field order: BL class_version (0), 3 x 3BD
7469// (base/uvec/vvec), 2 x RD (sizeu/sizev), BS display_props, B clip,
7470// 3 x RC (brightness/contrast/fade), [R2010+ B clip_mode], BS
7471// clip_boundary_type + verts.  Both handles (imagedef code 5 + reactor
7472// code 3) are emitted UNCONDITIONALLY at the END of the handle stream,
7473// matching parseDwg's order — NOT the spec's interleaved mid-stream slots.
7474bool DRW_Image::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                        dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 101;  // IMAGE class id — see dwgreader.cpp case 101
  if (!encodeDwgCommon(version, buf)) return false;

  buf->putBitLong(0);  // class_version (reader discards; ODA emits 0)
  buf->putBitDouble(basePoint.x); buf->putBitDouble(basePoint.y); buf->putBitDouble(basePoint.z);
  buf->putBitDouble(secPoint.x);  buf->putBitDouble(secPoint.y);  buf->putBitDouble(secPoint.z);  // uvec
  buf->putBitDouble(vVector.x);   buf->putBitDouble(vVector.y);   buf->putBitDouble(vVector.z);
  buf->putRawDouble(sizeu);
  buf->putRawDouble(sizev);
  buf->putBitShort(static_cast<std::uint16_t>(m_displayProps));
  buf->putBit(static_cast<std::uint8_t>(clip & 1));
  buf->putRawChar8(static_cast<std::uint8_t>(brightness));
  buf->putRawChar8(static_cast<std::uint8_t>(contrast));
  buf->putRawChar8(static_cast<std::uint8_t>(fade));
  if (version > DRW::AC1021) {  // 2010+ clip mode
      buf->putBit(clipMode ? 1 : 0);
  }
  if (clipPath.empty()) {
      buf->putBitShort(0);  // clip_boundary_type 0 = none
  } else {
      // Always emit polygon type 2 — reader expands a stored rect (type 1)
      // into a 4-vertex polygon, so re-emit it as a polygon, never type 1.
      buf->putBitShort(2);
      // Clamp to the count parseDwg accepts (it rejects clipType==2 with
      // numVerts > 100000, dropping the entity on re-read). The DXF parseCode
      // path (code 91) has no such bound, so a DXF-sourced clip can exceed it;
      // cap on encode and emit exactly that many vertices. Compute the min on
      // size_t (NOT a pre-cast int32) so an enormous size cannot wrap negative.
      constexpr std::size_t kMaxClipVerts = 100000u;
      const std::size_t emitVerts = std::min(clipPath.size(), kMaxClipVerts);
      if (clipPath.size() > kMaxClipVerts) {
          DRW_DBG("IMAGE clip vertices truncated to 100000 (was ")DRW_dbg::dbg("IMAGE clip vertices truncated to 100000 (was ");
          DRW_DBG(static_cast<int>(clipPath.size()))DRW_dbg::dbg(static_cast<int>(clipPath.size())); DRW_DBG(")\n")DRW_dbg::dbg(")\n");
      }
      buf->putBitLong(static_cast<std::int32_t>(emitVerts));
      for (std::size_t i = 0; i < emitVerts; ++i)
          buf->put2RawDouble(clipPath[i]);
  }

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  // Emit both trailing handles UNCONDITIONALLY in parseDwg order:
  // imagedef (hard pointer, code 5) then imagedefreactor (hard owner, code 3).
  dwgBufferW *hb = handleBuf ? handleBuf : buf;
  auto makeHandle = [](std::uint8_t code, std::uint32_t r) {
      dwgHandle h;
      h.code = (r == 0) ? 0 : code;
      h.ref  = r;
      h.size = 0;
      if (r != 0) { std::uint32_t t = r; while (t != 0) { t >>= 8; ++h.size; } }
      return h;
  };
  hb->putHandle(makeHandle(5, ref));                       // imagedef (340)
  hb->putHandle(makeHandle(3, m_imageDefReactorHandle));   // imagedefreactor (360)
  return true;
7532}

7534bool DRW_Wipeout::parseCode(int code, const std::unique_ptr<dxfReader>& reader) {
  return DRW_Image::parseCode(code, reader);
7536}

7538bool DRW_Wipeout::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs) {
  return DRW_Image::parseDwg(version, buf, bs);
7540}

7542bool DRW_Wipeout::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                           dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 1109;
  if (!encodeDwgCommon(version, buf)) return false;

  buf->putBitLong(0);
  buf->putBitDouble(basePoint.x); buf->putBitDouble(basePoint.y); buf->putBitDouble(basePoint.z);
  buf->putBitDouble(secPoint.x);  buf->putBitDouble(secPoint.y);  buf->putBitDouble(secPoint.z);
  buf->putBitDouble(vVector.x);   buf->putBitDouble(vVector.y);   buf->putBitDouble(vVector.z);
  buf->putRawDouble(sizeu);
  buf->putRawDouble(sizev);
  buf->putBitShort(static_cast<std::uint16_t>(m_displayProps));
  buf->putBit(static_cast<std::uint8_t>(clip & 1));
  buf->putRawChar8(static_cast<std::uint8_t>(brightness));
  buf->putRawChar8(static_cast<std::uint8_t>(contrast));
  buf->putRawChar8(static_cast<std::uint8_t>(fade));
  if (version > DRW::AC1021) {
      buf->putBit(clipMode ? 1 : 0);
  }
  if (clipPath.empty()) {
      buf->putBitShort(0);
  } else {
      buf->putBitShort(2);
      constexpr std::size_t kMaxClipVerts = 100000u;
      const std::size_t emitVerts = std::min(clipPath.size(), kMaxClipVerts);
      if (clipPath.size() > kMaxClipVerts) {
          DRW_DBG("WIPEOUT clip vertices truncated to 100000 (was ")DRW_dbg::dbg("WIPEOUT clip vertices truncated to 100000 (was "
);
          DRW_DBG(static_cast<int>(clipPath.size()))DRW_dbg::dbg(static_cast<int>(clipPath.size())); DRW_DBG(")\n")DRW_dbg::dbg(")\n");
      }
      buf->putBitLong(static_cast<std::int32_t>(emitVerts));
      for (std::size_t i = 0; i < emitVerts; ++i)
          buf->put2RawDouble(clipPath[i]);
  }

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  dwgBufferW *hb = handleBuf ? handleBuf : buf;
  auto makeHandle = [](std::uint8_t code, std::uint32_t r) {
      dwgHandle h;
      h.code = (r == 0) ? 0 : code;
      h.ref  = r;
      h.size = 0;
      if (r != 0) { std::uint32_t t = r; while (t != 0) { t >>= 8; ++h.size; } }
      return h;
  };
  hb->putHandle(makeHandle(5, ref));
  hb->putHandle(makeHandle(3, m_imageDefReactorHandle));
  return true;
7591}

7593bool DRW_PointCloud::parseCode(int code, const std::unique_ptr<dxfReader>& reader) {
  switch (code) {
  case 90: classVersion = reader->getInt32(); break;
  case 10: origin.x = reader->getDouble(); break;
  case 20: origin.y = reader->getDouble(); break;
  case 30: origin.z = reader->getDouble(); break;
  case 1: savedFilename = reader->getUtf8String(); break;
  case 91: sourceFileCount = reader->getInt32(); break;
  case 101:
      sourceFiles.clear();
      sourceFiles.reserve(static_cast<size_t>(sourceFileCount));
      break;
  case 300:
      if (sourceFiles.size() < static_cast<size_t>(sourceFileCount)) {
          sourceFiles.push_back(reader->getUtf8String());
      }
      break;
  case 11: extentsMin.x = reader->getDouble(); break;
  case 21: extentsMin.y = reader->getDouble(); break;
  case 31: extentsMin.z = reader->getDouble(); break;
  case 12: extentsMax.x = reader->getDouble(); break;
  case 22: extentsMax.y = reader->getDouble(); break;
  case 32: extentsMax.z = reader->getDouble(); break;
  case 92: pointCount = reader->getInt64(); break;
  case 2: ucsName = reader->getUtf8String(); break;
  case 13: ucsOrigin.x = reader->getDouble(); break;
  case 23: ucsOrigin.y = reader->getDouble(); break;
  case 33: ucsOrigin.z = reader->getDouble(); break;
  case 14: ucsXDirection.x = reader->getDouble(); break;
  case 24: ucsXDirection.y = reader->getDouble(); break;
  case 34: ucsXDirection.z = reader->getDouble(); break;
  case 15: ucsYDirection.x = reader->getDouble(); break;
  case 25: ucsYDirection.y = reader->getDouble(); break;
  case 35: ucsYDirection.z = reader->getDouble(); break;
  case 16: ucsZDirection.x = reader->getDouble(); break;
  case 26: ucsZDirection.y = reader->getDouble(); break;
  case 36: ucsZDirection.z = reader->getDouble(); break;
  case 340: definitionHandle = static_cast<std::uint32_t>(reader->getHandleString()); break;
  case 360: reactorHandle = static_cast<std::uint32_t>(reader->getHandleString()); break;
  case 290: showIntensity = reader->getBool(); break;
  case 280: intensityScheme = reader->getInt32(); break;
  case 441: intensityStyle.minIntensity = reader->getDouble(); break;
  case 442: intensityStyle.maxIntensity = reader->getDouble(); break;
  case 443: intensityStyle.lowThreshold = reader->getDouble(); break;
  case 444: intensityStyle.highThreshold = reader->getDouble(); break;
  case 291: showClipping = reader->getBool(); break;
  case 93: clippingCount = reader->getInt32(); break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }
  return true;
7644}

7646bool DRW_PointCloud::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs) {
  return DRW_Entity::parseDwg(version, buf, nullptr, bs);
7648}

7650bool DRW_PointCloud::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                              dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf; (void)handleBuf;
  oType = 1157;
  return encodeDwgCommon(version, buf);
7655}

7657bool DRW_PointCloudEx::parseCode(int code, const std::unique_ptr<dxfReader>& reader) {
  switch (code) {
  case 90: classVersion = reader->getInt32(); break;
  case 11: extentsMin.x = reader->getDouble(); break;
  case 21: extentsMin.y = reader->getDouble(); break;
  case 31: extentsMin.z = reader->getDouble(); break;
  case 12: extentsMax.x = reader->getDouble(); break;
  case 22: extentsMax.y = reader->getDouble(); break;
  case 32: extentsMax.z = reader->getDouble(); break;
  case 13: ucsOrigin.x = reader->getDouble(); break;
  case 23: ucsOrigin.y = reader->getDouble(); break;
  case 33: ucsOrigin.z = reader->getDouble(); break;
  case 14: ucsXDirection.x = reader->getDouble(); break;
  case 24: ucsXDirection.y = reader->getDouble(); break;
  case 34: ucsXDirection.z = reader->getDouble(); break;
  case 15: ucsYDirection.x = reader->getDouble(); break;
  case 25: ucsYDirection.y = reader->getDouble(); break;
  case 35: ucsYDirection.z = reader->getDouble(); break;
  case 16: ucsZDirection.x = reader->getDouble(); break;
  case 26: ucsZDirection.y = reader->getDouble(); break;
  case 36: ucsZDirection.z = reader->getDouble(); break;
  case 290: isLocked = reader->getBool(); break;
  case 340: definitionHandle = static_cast<std::uint32_t>(reader->getHandleString()); break;
  case 360: reactorHandle = static_cast<std::uint32_t>(reader->getHandleString()); break;
  case 1: name = reader->getUtf8String(); break;
  case 291: showIntensity = reader->getBool(); break;
  case 292: showCropping = reader->getBool(); break;
  case 91: croppingCount = reader->getInt32(); break;
  case 92: unknownInt0 = reader->getInt32(); break;
  case 93: unknownInt1 = reader->getInt32(); break;
  case 280: stylizationType = reader->getInt32(); break;
  case 300: intensityColorScheme = reader->getUtf8String(); break;
  case 301: currentColorScheme = reader->getUtf8String(); break;
  case 302: classificationColorScheme = reader->getUtf8String(); break;
  case 440: elevationMin = reader->getDouble(); break;
  case 441: elevationMax = reader->getDouble(); break;
  case 442: intensityMin = reader->getDouble(); break;
  case 443: intensityMax = reader->getDouble(); break;
  case 281: intensityOutOfRangeBehavior = reader->getInt32(); break;
  case 282: elevationOutOfRangeBehavior = reader->getInt32(); break;
  case 293: elevationApplyToFixedRange = reader->getBool(); break;
  case 294: intensityAsGradient = reader->getBool(); break;
  case 295: elevationAsGradient = reader->getBool(); break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }
  return true;
7704}

7706bool DRW_PointCloudEx::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs) {
  return DRW_Entity::parseDwg(version, buf, nullptr, bs);
7708}

7710bool DRW_PointCloudEx::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                                dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf; (void)handleBuf;
  oType = 1158;
  return encodeDwgCommon(version, buf);
7715}

7717bool DRW_Surface::parseCode(int code, const std::unique_ptr<dxfReader>& reader) {
  switch (code) {
  case 70:
      modelerFormatVersion = reader->getInt32();
      break;
  case 71:
      uIsolines = reader->getInt32();
      break;
  case 72:
      vIsolines = reader->getInt32();
      break;
  case 310:
      {
          std::vector<std::uint8_t> decoded;
          if (!decodeHexBytes(reader->getString(), decoded))
              return false;
          appendBytes(rawAcisData, decoded);
      }
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }
  return true;
7740}

7742bool DRW_Surface::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs) {
  return DRW_Entity::parseDwg(version, buf, nullptr, bs);
7744}

7746bool DRW_Surface::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                           dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf; (void)handleBuf;
  return encodeDwgCommon(version, buf);
7750}

7752bool DRW_Dimension::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 1:
      text = reader->getUtf8String();
      break;
  case 2:
      name = reader->getString();
      break;
  case 3:
      style = reader->getUtf8String();
      break;
  case 70:
      type = reader->getInt32();
      break;
  case 71:
      align = reader->getInt32();
      break;
  case 72:
      linesty = reader->getInt32();
      break;
  case 10:
      defPoint.x = reader->getDouble();
      break;
  case 20:
      defPoint.y = reader->getDouble();
      break;
  case 30:
      defPoint.z = reader->getDouble();
      break;
  case 11:
      textPoint.x = reader->getDouble();
      break;
  case 21:
      textPoint.y = reader->getDouble();
      break;
  case 31:
      textPoint.z = reader->getDouble();
      break;
  case 12:
      clonePoint.x = reader->getDouble();
      break;
  case 22:
      clonePoint.y = reader->getDouble();
      break;
  case 32:
      clonePoint.z = reader->getDouble();
      break;
  case 13:
      def1.x = reader->getDouble();
      break;
  case 23:
      def1.y = reader->getDouble();
      break;
  case 33:
      def1.z = reader->getDouble();
      break;
  case 14:
      def2.x = reader->getDouble();
      break;
  case 24:
      def2.y = reader->getDouble();
      break;
  case 34:
      def2.z = reader->getDouble();
      break;
  case 15:
      circlePoint.x = reader->getDouble();
      break;
  case 25:
      circlePoint.y = reader->getDouble();
      break;
  case 35:
      circlePoint.z = reader->getDouble();
      break;
  case 16:
      arcPoint.x = reader->getDouble();
      break;
  case 26:
      arcPoint.y = reader->getDouble();
      break;
  case 36:
      arcPoint.z = reader->getDouble();
      break;
  case 41:
      linefactor = reader->getDouble();
      break;
  case 53:
      rot = reader->getDouble();
      break;
  case 50:
      angle = reader->getDouble();
      break;
  case 52:
      oblique = reader->getDouble();
      break;
  case 40:
      length = reader->getDouble();
      break;
  case 51:
      hdir = reader->getDouble();
      break;
  case 42:
      measureValue = reader->getDouble();
      break;
  case 74:
      flipArrow1 = reader->getInt32() != 0;
      break;
  case 75:
      flipArrow2 = reader->getInt32() != 0;
      break;
  case 76:
      genTol = reader->getInt32() != 0;
      break;
  case 77:
      limGen = reader->getInt32() != 0;
      break;
  case 43:
      tolPlus = reader->getDouble();
      break;
  case 44:
      tolMinus = reader->getDouble();
      break;
  case 45:
      tolScale = reader->getDouble();
      break;
  case 78:
      tolDecimals = reader->getInt32();
      break;
  case 79:
      tolAlign = reader->getInt32();
      break;
  case 80:
      tolZero = reader->getInt32();
      break;
  case 81:
      altTolDecimals = reader->getInt32();
      break;
  case 82:
      altZero = reader->getInt32();
      break;
  case 83:
      altTolZero = reader->getInt32();
      break;
  case 84:
      textMove = reader->getInt32();
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }

  return true;
7903}

7905bool DRW_Dimension::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs)
7906{
  DRW_UNUSED( version)(void)version;
  DRW_UNUSED( buf)(void)buf;
  DRW_UNUSED( bs)(void)bs;

  DRW_DBG("DRW_Dimension::parseDwg(): base class implemntation should never be called direct!\n")DRW_dbg::dbg("DRW_Dimension::parseDwg(): base class implemntation should never be called direct!\n"
);

  return false;
7914}

7916bool DRW_Dimension::parseDwg(DRW::Version version, dwgBuffer *buf, dwgBuffer *sBuf, std::uint32_t bs /*= 0*/) {
  dwgBuffer sBuff = *buf;
  sBuf = buf;
  if (version > DRW::AC1018) {//2007+
      sBuf = &sBuff; //separate buffer for strings
  }

  if (!DRW_Entity::parseDwg( version, buf, sBuf, bs)) {
      return false;
  }

  DRW_DBG("\n***************************** parsing dimension *********************************************")DRW_dbg::dbg("\n***************************** parsing dimension *********************************************"
);
  if (version > DRW::AC1021) { //2010+
      std::uint8_t dimVersion = buf->getRawChar8();
      DRW_DBG("\ndimVersion: ")DRW_dbg::dbg("\ndimVersion: "); DRW_DBG(dimVersion)DRW_dbg::dbg(dimVersion);
  }
  // ODA §20.4.22: Extrusion is plain 3BD (NOT BE) — confirmed by libreDWG dwg_spec_shared.h
  extPoint = buf->get3BitDouble();
  DRW_DBG("\nextPoint: ")DRW_dbg::dbg("\nextPoint: "); DRW_DBGPT(extPoint.x, extPoint.y, extPoint.z)DRW_dbg::dbgPT(extPoint.x, extPoint.y, extPoint.z);
  textPoint.x = buf->getRawDouble();
  textPoint.y = buf->getRawDouble();
  textPoint.z = buf->getBitDouble();
  DRW_DBG("\ntextPoint: ")DRW_dbg::dbg("\ntextPoint: "); DRW_DBGPT(textPoint.x, textPoint.y, textPoint.z)DRW_dbg::dbgPT(textPoint.x, textPoint.y, textPoint.z);
  type = buf->getRawChar8();
  DRW_DBG("\ntype (70) read: ")DRW_dbg::dbg("\ntype (70) read: "); DRW_DBG(type)DRW_dbg::dbg(type);
  type =  (type & 1) ? type & 0x7F : type | 0x80; //set bit 7
  type =  (type & 2) ? type | 0x20 : type & 0xDF; //set bit 5
  DRW_DBG(" type (70) set: ")DRW_dbg::dbg(" type (70) set: "); DRW_DBG(type)DRW_dbg::dbg(type);
  //clear last 3 bits to set integer dim type
  type &= 0xF8;
  text = sBuf->getVariableText(version, false);
  DRW_DBG("\nforced dim text: ")DRW_dbg::dbg("\nforced dim text: "); DRW_DBG(text.c_str())DRW_dbg::dbg(text.c_str());
  rot = buf->getBitDouble();
  hdir = buf->getBitDouble();
  DRW_Coord inspoint = buf->get3BitDouble();
  DRW_DBG("\ninspoint: ")DRW_dbg::dbg("\ninspoint: "); DRW_DBGPT(inspoint.x, inspoint.y, inspoint.z)DRW_dbg::dbgPT(inspoint.x, inspoint.y, inspoint.z);
  double insRot_code54 = buf->getBitDouble(); //RLZ: unknown, investigate
  DRW_DBG(" insRot_code54: ")DRW_dbg::dbg(" insRot_code54: "); DRW_DBG(insRot_code54)DRW_dbg::dbg(insRot_code54);
  if (version > DRW::AC1014) { //2000+
      align = buf->getBitShort();
      linesty = buf->getBitShort();
      linefactor = buf->getBitDouble();
      measureValue = buf->getBitDouble();
      DRW_DBG("\n  actMeas_code42: ")DRW_dbg::dbg("\n  actMeas_code42: "); DRW_DBG(measureValue)DRW_dbg::dbg(measureValue);
      if (version > DRW::AC1018) { //2007+
          bool unk = buf->getBit();
          flipArrow1 = buf->getBit();
          flipArrow2 = buf->getBit();
          DRW_DBG("\n2007, unk, flip1, flip2: ")DRW_dbg::dbg("\n2007, unk, flip1, flip2: "); DRW_DBG(unk)DRW_dbg::dbg(unk); DRW_DBG(flipArrow1)DRW_dbg::dbg(flipArrow1); DRW_DBG(flipArrow2)DRW_dbg::dbg(flipArrow2);
      }
  }
  clonePoint.x = buf->getRawDouble();
  clonePoint.y = buf->getRawDouble();
  DRW_DBG("\nclonePoint: ")DRW_dbg::dbg("\nclonePoint: "); DRW_DBGPT(clonePoint.x, clonePoint.y, clonePoint.z)DRW_dbg::dbgPT(clonePoint.x, clonePoint.y, clonePoint.z);

  return buf->isGood();
7972}

7974bool DRW_DimAligned::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (!DRW_Dimension::parseDwg(version, buf, nullptr, bs)) {
      return false;
  }

  if (oType == 0x15)
      DRW_DBG("\n***************************** parsing dim linear *********************************************\n")DRW_dbg::dbg("\n***************************** parsing dim linear *********************************************\n"
);
  else
      DRW_DBG("\n***************************** parsing dim aligned *********************************************\n")DRW_dbg::dbg("\n***************************** parsing dim aligned *********************************************\n"
);
  DRW_Coord pt = buf->get3BitDouble();
  setPt3(pt); //def1
  DRW_DBG("def1: ")DRW_dbg::dbg("def1: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setPt4(pt);
  DRW_DBG("\ndef2: ")DRW_dbg::dbg("\ndef2: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setDefPoint(pt);
  DRW_DBG("\ndefPoint: ")DRW_dbg::dbg("\ndefPoint: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  setOb52(buf->getBitDouble() * ARAD57.29577951308232);  // radians → degrees
  if (oType == 0x15)
      setAn50(buf->getBitDouble() * ARAD57.29577951308232);
  else
      type |= 1;
  DRW_DBG("\n  type (70) final: ")DRW_dbg::dbg("\n  type (70) final: "); DRW_DBG(type)DRW_dbg::dbg(type); DRW_DBG("\n")DRW_dbg::dbg("\n");

  if (!DRW_Entity::parseDwgEntHandle(version, buf)) {
      DRW_DBG("Failed: parseDwgEntHandle() in DRW_DimAligned::parseDwg()\n")DRW_dbg::dbg("Failed: parseDwgEntHandle() in DRW_DimAligned::parseDwg()\n"
);
      return false;
  }
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  dimStyleH = buf->getHandle();
  DRW_DBG("dim style Handle: ")DRW_dbg::dbg("dim style Handle: "); DRW_DBGHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref)DRW_dbg::dbgHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  blockH = buf->getHandle(); /* H 7 STYLE (hard pointer) */
  DRW_DBG("anon block Handle: ")DRW_dbg::dbg("anon block Handle: "); DRW_DBGHL(blockH.code, blockH.size, blockH.ref)DRW_dbg::dbgHL(blockH.code, blockH.size, blockH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  //    RS crc;   //RS */
  return buf->isGood();
}

8014bool DRW_DimRadial::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (!DRW_Dimension::parseDwg(version, buf, nullptr, bs)) {
      return false;
  }

  DRW_DBG("\n***************************** parsing dim radial *********************************************\n")DRW_dbg::dbg("\n***************************** parsing dim radial *********************************************\n"
);
  DRW_Coord pt = buf->get3BitDouble();
  setDefPoint(pt); //code 10
  DRW_DBG("defPoint: ")DRW_dbg::dbg("defPoint: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setPt5(pt); //center pt  code 15
  DRW_DBG("\ncenter point: ")DRW_dbg::dbg("\ncenter point: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  setRa40(buf->getBitDouble()); //leader length code 40
  DRW_DBG("\nleader length: ")DRW_dbg::dbg("\nleader length: "); DRW_DBG(getRa40())DRW_dbg::dbg(getRa40());
  type |= 4;
  DRW_DBG("\n  type (70) final: ")DRW_dbg::dbg("\n  type (70) final: "); DRW_DBG(type)DRW_dbg::dbg(type); DRW_DBG("\n")DRW_dbg::dbg("\n");

  if (!DRW_Entity::parseDwgEntHandle(version, buf)) {
      DRW_DBG("Failed: parseDwgEntHandle() in DRW_DimRadial::parseDwg()\n")DRW_dbg::dbg("Failed: parseDwgEntHandle() in DRW_DimRadial::parseDwg()\n"
);
      return false;
  }
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  dimStyleH = buf->getHandle();
  DRW_DBG("dim style Handle: ")DRW_dbg::dbg("dim style Handle: "); DRW_DBGHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref)DRW_dbg::dbgHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  blockH = buf->getHandle(); /* H 7 STYLE (hard pointer) */
  DRW_DBG("anon block Handle: ")DRW_dbg::dbg("anon block Handle: "); DRW_DBGHL(blockH.code, blockH.size, blockH.ref)DRW_dbg::dbgHL(blockH.code, blockH.size, blockH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  //    RS crc;   //RS */
  return buf->isGood();
8044}

8046// DRW_DimLargeRadial (AcDbRadialDimensionLarge, LARGE_RADIAL_DIMENSION).
8047// DXF group-code parser: the AcDbRadialDimensionLarge subclass overloads codes
8048// 13/14/15/40 (chord / override center / jog point / jog angle), so gate them on
8049// the subclass marker (like DRW_DimArc). The chord point is stored as the radial
8050// diameter point so the existing addDimRadial consumer renders center→chord.
8051bool DRW_DimLargeRadial::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  if (code == 100) {
      std::string s = reader->getString();
      if (s == "AcDbRadialDimensionLarge") {
          m_largeRadialSubclassSeen = true;
          return true;
      }
      return DRW_Dimension::parseCode(code, reader);
  }
  if (m_largeRadialSubclassSeen) {
      DRW_Coord chord;
      switch (code) {
      case 13: chord = getPt5(); chord.x = reader->getDouble(); setPt5(chord); return true;
      case 23: chord = getPt5(); chord.y = reader->getDouble(); setPt5(chord); return true;
      case 33: chord = getPt5(); chord.z = reader->getDouble(); setPt5(chord); return true;
      case 14: overrideCenterPoint.x = reader->getDouble(); return true;
      case 24: overrideCenterPoint.y = reader->getDouble(); return true;
      case 34: overrideCenterPoint.z = reader->getDouble(); return true;
      case 15: jogPoint.x = reader->getDouble(); return true;
      case 25: jogPoint.y = reader->getDouble(); return true;
      case 35: jogPoint.z = reader->getDouble(); return true;
      case 40: jogAngle = reader->getDouble(); return true;
      default: break;
      }
  }
  return DRW_Dimension::parseCode(code, reader);
8077}

8079// DRW_DimLargeRadial DWG body: five subclass reads then the dim-style and
8080// anon-block handles.  The three subclass points are ordered
8081//   definition point, JOG point, jog angle, CHORD point, OVERRIDDEN center
8082// so that the decoded fields match the DXF group codes (chord=13, override=14,
8083// jog=15) and libdxfrw's own DXF parseCode.  The read-only reference parser
8084// (parseLargeRadialDimension) labels the 2nd/4th/5th reads chord/override/jog,
8085// i.e. a cyclic rotation of the point roles; that is inconsistent with the DXF
8086// semantics and with an ODA File Converter DXF↔DWG round-trip (which preserves
8087// codes 13/14/15 exactly).  Verified by large_radial_dim_dwg_tests.cpp against
8088// an ODA-synthesized fixture, cross-checked with the dwg-parser's DXF read.
8089// Only the field labels change vs. the reference parser — the read sizes/order
8090// (3BD, 3BD, BD, 3BD, 3BD) are identical, so buffer alignment is unchanged.
8091bool DRW_DimLargeRadial::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (!DRW_Dimension::parseDwg(version, buf, nullptr, bs)) {
      return false;
  }
  setDefPoint(buf->get3BitDouble());          // definition point (code 10)
  jogPoint = buf->get3BitDouble();            // jog vertex (code 15)
  jogAngle = buf->getBitDouble();             // jog transverse angle (code 40)
  setPt5(buf->get3BitDouble());               // chord point → radial diameter point (code 13)
  overrideCenterPoint = buf->get3BitDouble(); // overridden center (code 14)
  type |= 4;                                  // radial dimension type bit
  if (!DRW_Entity::parseDwgEntHandle(version, buf)) {
      return false;
  }
  dimStyleH = buf->getHandle();
  blockH    = buf->getHandle();
  return buf->isGood();
8107}

8109bool DRW_DimDiametric::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (!DRW_Dimension::parseDwg(version, buf, nullptr, bs)) {
      return false;
  }

  DRW_DBG("\n***************************** parsing dim diametric *********************************************\n")DRW_dbg::dbg("\n***************************** parsing dim diametric *********************************************\n"
);
  DRW_Coord pt = buf->get3BitDouble();
  setPt5(pt); //center pt  code 15
  DRW_DBG("center point: ")DRW_dbg::dbg("center point: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setDefPoint(pt); //code 10
  DRW_DBG("\ndefPoint: ")DRW_dbg::dbg("\ndefPoint: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  setRa40(buf->getBitDouble()); //leader length code 40
  DRW_DBG("\nleader length: ")DRW_dbg::dbg("\nleader length: "); DRW_DBG(getRa40())DRW_dbg::dbg(getRa40());
  type |= 3;
  DRW_DBG("\n  type (70) final: ")DRW_dbg::dbg("\n  type (70) final: "); DRW_DBG(type)DRW_dbg::dbg(type); DRW_DBG("\n")DRW_dbg::dbg("\n");

  if (!DRW_Entity::parseDwgEntHandle(version, buf)) {
      DRW_DBG("Failed: parseDwgEntHandle() in DRW_DimDiametric::parseDwg()\n")DRW_dbg::dbg("Failed: parseDwgEntHandle() in DRW_DimDiametric::parseDwg()\n"
);
      return false;
  }
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  dimStyleH = buf->getHandle();
  DRW_DBG("dim style Handle: ")DRW_dbg::dbg("dim style Handle: "); DRW_DBGHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref)DRW_dbg::dbgHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  blockH = buf->getHandle(); /* H 7 STYLE (hard pointer) */
  DRW_DBG("anon block Handle: ")DRW_dbg::dbg("anon block Handle: "); DRW_DBGHL(blockH.code, blockH.size, blockH.ref)DRW_dbg::dbgHL(blockH.code, blockH.size, blockH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  //    RS crc;   //RS */
  return buf->isGood();
8139}

8141bool DRW_DimAngular::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (!DRW_Dimension::parseDwg(version, buf, nullptr, bs)) {
      return false;
  }

  DRW_DBG("\n***************************** parsing dim angular *********************************************\n")DRW_dbg::dbg("\n***************************** parsing dim angular *********************************************\n"
);
  DRW_Coord pt;
  pt.x = buf->getRawDouble();
  pt.y = buf->getRawDouble();
  setPt6(pt); //code 16
  DRW_DBG("arc Point: ")DRW_dbg::dbg("arc Point: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setPt3(pt); //def1  code 13
  DRW_DBG("\ndef1: ")DRW_dbg::dbg("\ndef1: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setPt4(pt); //def2  code 14
  DRW_DBG("\ndef2: ")DRW_dbg::dbg("\ndef2: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setPt5(pt); //center pt  code 15
  DRW_DBG("\ncenter point: ")DRW_dbg::dbg("\ncenter point: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setDefPoint(pt); //code 10
  DRW_DBG("\ndefPoint: ")DRW_dbg::dbg("\ndefPoint: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  type |= 0x02;
  DRW_DBG("\n  type (70) final: ")DRW_dbg::dbg("\n  type (70) final: "); DRW_DBG(type)DRW_dbg::dbg(type); DRW_DBG("\n")DRW_dbg::dbg("\n");

  if (!DRW_Entity::parseDwgEntHandle(version, buf)) {
      DRW_DBG("Failed: parseDwgEntHandle() in DRW_DimAngular::parseDwg()\n")DRW_dbg::dbg("Failed: parseDwgEntHandle() in DRW_DimAngular::parseDwg()\n"
);
      return false;
  }
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  dimStyleH = buf->getHandle();
  DRW_DBG("dim style Handle: ")DRW_dbg::dbg("dim style Handle: "); DRW_DBGHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref)DRW_dbg::dbgHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  blockH = buf->getHandle(); /* H 7 STYLE (hard pointer) */
  DRW_DBG("anon block Handle: ")DRW_dbg::dbg("anon block Handle: "); DRW_DBGHL(blockH.code, blockH.size, blockH.ref)DRW_dbg::dbgHL(blockH.code, blockH.size, blockH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  //    RS crc;   //RS */
  return buf->isGood();
8180}

8182bool DRW_DimAngular3p::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (!DRW_Dimension::parseDwg(version, buf, nullptr, bs)) {
      return false;
  }

  DRW_DBG("\n***************************** parsing dim angular3p *********************************************\n")DRW_dbg::dbg("\n***************************** parsing dim angular3p *********************************************\n"
);
  DRW_Coord pt = buf->get3BitDouble();
  setDefPoint(pt); //code 10
  DRW_DBG("defPoint: ")DRW_dbg::dbg("defPoint: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setPt3(pt); //def1  code 13
  DRW_DBG("\ndef1: ")DRW_dbg::dbg("\ndef1: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setPt4(pt); //def2  code 14
  DRW_DBG("\ndef2: ")DRW_dbg::dbg("\ndef2: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setPt5(pt); //center pt  code 15
  DRW_DBG("\ncenter point: ")DRW_dbg::dbg("\ncenter point: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  type |= 0x05;
  DRW_DBG("\n  type (70) final: ")DRW_dbg::dbg("\n  type (70) final: "); DRW_DBG(type)DRW_dbg::dbg(type); DRW_DBG("\n")DRW_dbg::dbg("\n");

  if (!DRW_Entity::parseDwgEntHandle(version, buf)) {
      DRW_DBG("Failed: parseDwgEntHandle() in DRW_DimAngular3p::parseDwg()\n")DRW_dbg::dbg("Failed: parseDwgEntHandle() in DRW_DimAngular3p::parseDwg()\n"
);
      return false;
  }
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  dimStyleH = buf->getHandle();
  DRW_DBG("dim style Handle: ")DRW_dbg::dbg("dim style Handle: "); DRW_DBGHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref)DRW_dbg::dbgHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  blockH = buf->getHandle(); /* H 7 STYLE (hard pointer) */
  DRW_DBG("anon block Handle: ")DRW_dbg::dbg("anon block Handle: "); DRW_DBGHL(blockH.code, blockH.size, blockH.ref)DRW_dbg::dbgHL(blockH.code, blockH.size, blockH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  //    RS crc;   //RS */
  return buf->isGood();
8216}

8218bool DRW_DimOrdinate::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  if (!DRW_Dimension::parseDwg(version, buf, nullptr, bs)) {
      return false;
  }

  DRW_DBG("\n***************************** parsing dim ordinate *********************************************\n")DRW_dbg::dbg("\n***************************** parsing dim ordinate *********************************************\n"
);
  DRW_Coord pt = buf->get3BitDouble();
  setDefPoint(pt);
  DRW_DBG("defPoint: ")DRW_dbg::dbg("defPoint: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setPt3(pt); //def1
  DRW_DBG("\ndef1: ")DRW_dbg::dbg("\ndef1: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  pt = buf->get3BitDouble();
  setPt4(pt);
  DRW_DBG("\ndef2: ")DRW_dbg::dbg("\ndef2: "); DRW_DBGPT(pt.x, pt.y, pt.z)DRW_dbg::dbgPT(pt.x, pt.y, pt.z);
  std::uint8_t type2 = buf->getRawChar8();//RLZ: correct this
  DRW_DBG("type2 (70) read: ")DRW_dbg::dbg("type2 (70) read: "); DRW_DBG(type2)DRW_dbg::dbg(type2);
  // 0B.1: x-vs-y ordinate flag is DXF group-70 bit 6 (0x40), matching the
  // filter (rs_filterdxfrw.cpp `type & 64`) and the DWG parseCode path.
  // (Previously set bit 7/0x80, which the filter never checks.) The clear
  // mask 0xBF already clears 0x40. The DIMENSION base type byte (bit 7) is
  // a separate field — see :6141/:6409/:6660, NOT touched here.
  type =  (type2 & 1) ? type | 0x40 : type & 0xBF; //set bit 6 (0x40)
  DRW_DBG(" type (70) set: ")DRW_dbg::dbg(" type (70) set: "); DRW_DBG(type)DRW_dbg::dbg(type);
  type |= 6;
  DRW_DBG("\n  type (70) final: ")DRW_dbg::dbg("\n  type (70) final: "); DRW_DBG(type)DRW_dbg::dbg(type); DRW_DBG("\n")DRW_dbg::dbg("\n");

  if (!DRW_Entity::parseDwgEntHandle(version, buf)) {
      DRW_DBG("Failed: parseDwgEntHandle() in DRW_DimAligned::parseDwg()\n")DRW_dbg::dbg("Failed: parseDwgEntHandle() in DRW_DimAligned::parseDwg()\n"
);
      return false;
  }
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  dimStyleH = buf->getHandle();
  DRW_DBG("dim style Handle: ")DRW_dbg::dbg("dim style Handle: "); DRW_DBGHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref)DRW_dbg::dbgHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  blockH = buf->getHandle(); /* H 7 STYLE (hard pointer) */
  DRW_DBG("anon block Handle: ")DRW_dbg::dbg("anon block Handle: "); DRW_DBGHL(blockH.code, blockH.size, blockH.ref)DRW_dbg::dbgHL(blockH.code, blockH.size, blockH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  //    RS crc;   //RS */
  return buf->isGood();
8258}

8260// ----------------------------------------------------------------------------
8261// DRW_Dimension shared base encoder (R2000 / AC1015)
8262// ----------------------------------------------------------------------------
8263bool DRW_Dimension::encodeDwgDimBase(DRW::Version version, dwgBufferW *buf,
                                   dwgBufferW *strBuf) const {
  // ODA §20.4.22: version RC present for R2010+ (mirrors parseDwg read at version > AC1021)
  if (version > DRW::AC1021)
      buf->putRawChar8(0);
  // R2007+: the dim text below is routed to strBuf (the separate string
  // stream) via the (strBuf ? strBuf : buf) selector in putVariableText.
  buf->put3BitDouble(extPoint);        // 3BD per ODA §20.4.22 (NOT BE, NO padding bits)
  buf->putRawDouble(textPoint.x);
  buf->putRawDouble(textPoint.y);
  buf->putBitDouble(textPoint.z);
  // Reverse the parseDwg type-byte transformation:
  //   parseDwg bit0=0 → type bit7 set;  bit0=1 → type bit7 clear
  //   parseDwg bit1=1 → type bit5 set;  bit1=0 → type bit5 clear
  std::uint8_t rawByte = static_cast<std::uint8_t>(
      ((type & 0x80) ? 0 : 1) | ((type & 0x20) ? 2 : 0));
  buf->putRawChar8(rawByte);
  (strBuf ? strBuf : buf)->putVariableText(version, text);
  buf->putBitDouble(rot);
  buf->putBitDouble(hdir);
  // ins_scale (3BD) of the dimension's anonymous block — not stored by the
  // reader, but ODA/libreDWG default it to (1,1,1) (dwg.spec FIELD_3BD_1), not
  // (0,0,0). A zero scale is degenerate for ODA consumers. (write-review #46)
  const DRW_Coord insScale{1.0, 1.0, 1.0};
  buf->put3BitDouble(insScale);
  buf->putBitDouble(0.0);         // ins_rotation (code 54) — default 0, not stored
  // R2000 (version > AC1014): alignment, spacing, line factor, measure
  buf->putBitShort(static_cast<std::uint16_t>(align));
  buf->putBitShort(static_cast<std::uint16_t>(linesty));
  buf->putBitDouble(linefactor);
  buf->putBitDouble(measureValue);
  if (version > DRW::AC1018) {
      buf->putBit(0); // unknown R2007+ bit
      buf->putBit(flipArrow1 ? 1 : 0);
      buf->putBit(flipArrow2 ? 1 : 0);
  }
  buf->putRawDouble(clonePoint.x);
  buf->putRawDouble(clonePoint.y);
  return true;
8302}

8304// Helper: emit dimStyleH (defaults to STANDARD=0x15) and blockH.
8305static void putDimHandles(dwgBufferW *buf, const dwgHandle& dimStyleH, const dwgHandle& blockH,
                        dwgBufferW *hBuf = nullptr) {
  dwgBufferW *hb = hBuf ? hBuf : buf;
  dwgHandle dsH;
  dsH.code = 5;
  dsH.ref  = (dimStyleH.ref == 0) ? 0x15 : dimStyleH.ref;
  dsH.size = 0;
  if (dsH.ref != 0) { std::uint32_t t = dsH.ref; while (t != 0) { t >>= 8; ++dsH.size; } }
  hb->putHandle(dsH);

  dwgHandle bhH;
  bhH.code = (blockH.ref == 0) ? 0 : 5;
  bhH.ref  = blockH.ref;
  bhH.size = 0;
  if (bhH.ref != 0) { std::uint32_t t = bhH.ref; while (t != 0) { t >>= 8; ++bhH.size; } }
  hb->putHandle(bhH);
8321}

8323// ----------------------------------------------------------------------------
8324// DRW_DimAligned::encodeDwg  (oType=22)
8325// ----------------------------------------------------------------------------
8326bool DRW_DimAligned::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 22;
  if (!encodeDwgCommon(version, buf)) return false;
  if (!encodeDwgDimBase(version, buf, strBuf)) return false;
  buf->put3BitDouble(getPt3());      // def1
  buf->put3BitDouble(getPt4());      // def2
  buf->put3BitDouble(getDefPoint()); // defPoint
  buf->putBitDouble(getOb52() / ARAD57.29577951308232);  // oblique: degrees → radians
  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  putDimHandles(buf, dimStyleH, blockH, handleBuf);
  return true;
8338}

8340// ----------------------------------------------------------------------------
8341// DRW_DimLinear::encodeDwg  (oType=21)
8342// ----------------------------------------------------------------------------
8343bool DRW_DimLinear::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 21;
  if (!encodeDwgCommon(version, buf)) return false;
  if (!encodeDwgDimBase(version, buf, strBuf)) return false;
  buf->put3BitDouble(getPt3());      // def1
  buf->put3BitDouble(getPt4());      // def2
  buf->put3BitDouble(getDefPoint()); // defPoint
  buf->putBitDouble(getOb52() / ARAD57.29577951308232);  // oblique: degrees → radians
  buf->putBitDouble(getAn50() / ARAD57.29577951308232);  // rotation angle: degrees → radians
  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  putDimHandles(buf, dimStyleH, blockH, handleBuf);
  return true;
8356}

8358// ----------------------------------------------------------------------------
8359// DRW_DimRadial::encodeDwg  (oType=25)
8360// ----------------------------------------------------------------------------
8361bool DRW_DimRadial::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 25;
  if (!encodeDwgCommon(version, buf)) return false;
  if (!encodeDwgDimBase(version, buf, strBuf)) return false;
  buf->put3BitDouble(getDefPoint());  // center point (code 10)
  buf->put3BitDouble(getPt5());       // diameter point (code 15)
  buf->putBitDouble(getRa40());       // leader length (code 40)
  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  putDimHandles(buf, dimStyleH, blockH, handleBuf);
  return true;
8372}

8374// ----------------------------------------------------------------------------
8375// DRW_DimLargeRadial::encodeDwg  (oType=519, custom AcDbRadialDimensionLarge)
8376// ----------------------------------------------------------------------------
8377bool DRW_DimLargeRadial::encodeDwg(DRW::Version version, dwgBufferW *buf,
                                 std::uint32_t bs, dwgBufferW *strBuf,
                                 dwgBufferW *handleBuf) {
  (void)bs;
  oType = kDwgClassNum;
  if (!encodeDwgCommon(version, buf)) return false;
  if (!encodeDwgDimBase(version, buf, strBuf)) return false;
  buf->put3BitDouble(getCenterPoint());       // definition point (code 10)
  buf->put3BitDouble(jogPoint);               // jog vertex (code 15)
  buf->putBitDouble(jogAngle);                // jog transverse angle (code 40)
  buf->put3BitDouble(getChordPoint());        // chord point (code 13)
  buf->put3BitDouble(overrideCenterPoint);    // overridden center (code 14)
  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  putDimHandles(buf, dimStyleH, blockH, handleBuf);
  return true;
8392}

8394// ----------------------------------------------------------------------------
8395// DRW_DimDiametric::encodeDwg  (oType=26)
8396// ----------------------------------------------------------------------------
8397bool DRW_DimDiametric::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 26;
  if (!encodeDwgCommon(version, buf)) return false;
  if (!encodeDwgDimBase(version, buf, strBuf)) return false;
  buf->put3BitDouble(getPt5());       // first diameter point (code 15) — matches parseDwg order
  buf->put3BitDouble(getDefPoint());  // opposite point (code 10)
  buf->putBitDouble(getRa40());       // leader length (code 40)
  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  putDimHandles(buf, dimStyleH, blockH, handleBuf);
  return true;
8408}

8410// ----------------------------------------------------------------------------
8411// DRW_DimAngular::encodeDwg  (oType=24, 2-line angular)
8412// ----------------------------------------------------------------------------
8413bool DRW_DimAngular::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 24;
  if (!encodeDwgCommon(version, buf)) return false;
  if (!encodeDwgDimBase(version, buf, strBuf)) return false;
  // arcPoint is 2RD (not 3BD) in parseDwg — only x and y
  buf->putRawDouble(getPt6().x);
  buf->putRawDouble(getPt6().y);
  buf->put3BitDouble(getPt3());       // def1 (line 1 start)
  buf->put3BitDouble(getPt4());       // def2 (line 1 end)
  buf->put3BitDouble(getPt5());       // circlePoint (center)
  buf->put3BitDouble(getDefPoint());  // defPoint
  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  putDimHandles(buf, dimStyleH, blockH, handleBuf);
  return true;
8428}

8430// ----------------------------------------------------------------------------
8431// DRW_DimAngular3p::encodeDwg  (oType=23, 3-point angular)
8432// ----------------------------------------------------------------------------
8433bool DRW_DimAngular3p::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 23;
  if (!encodeDwgCommon(version, buf)) return false;
  if (!encodeDwgDimBase(version, buf, strBuf)) return false;
  buf->put3BitDouble(getDefPoint());  // defPoint (code 10)
  buf->put3BitDouble(getPt3());       // def1 (code 13)
  buf->put3BitDouble(getPt4());       // def2 (code 14)
  buf->put3BitDouble(getPt5());       // circlePoint / vertex (code 15)
  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  putDimHandles(buf, dimStyleH, blockH, handleBuf);
  return true;
8445}

8447// ----------------------------------------------------------------------------
8448// DRW_DimArc::parseCode  (DXF group-code parser)
8449// ----------------------------------------------------------------------------
8450bool DRW_DimArc::parseCode(int code, const std::unique_ptr<dxfReader>& reader) {
  if (code == 100) {
      std::string s = reader->getString();
      if (s == "AcDbArcDimension") {
          m_arcSubclassSeen = true;
          return true;
      }
      // Fall through for AcDbEntity / AcDbDimension so base classes see them
      return DRW_Dimension::parseCode(code, reader);
  }
  if (m_arcSubclassSeen) {
      switch (code) {
      case 40: arcStartAngle = reader->getDouble();         return true;
      case 41: arcEndAngle   = reader->getDouble();         return true;
      case 70: arcSymbol     = reader->getInt32();          return true;
      case 71: isPartial     = reader->getInt32() != 0;    return true;
      }
  }
  switch (code) {
  case 17: leaderPt2.x = reader->getDouble(); return true;
  case 27: leaderPt2.y = reader->getDouble(); return true;
  case 37: leaderPt2.z = reader->getDouble(); return true;
  }
  return DRW_Dimension::parseCode(code, reader);
8474}

8476// ----------------------------------------------------------------------------
8477// DRW_DimArc::parseDwg  (ODA DWG spec §20.4.19)
8478// ----------------------------------------------------------------------------
8479bool DRW_DimArc::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs) {
  if (!DRW_Dimension::parseDwg(version, buf, nullptr, bs)) return false;
  setDefPoint(buf->get3BitDouble());   // arc dim-line arc point (code 10)
  setPt3(buf->get3BitDouble());        // extension line 1 (code 13)
  setPt4(buf->get3BitDouble());        // extension line 2 (code 14)
  setPt5(buf->get3BitDouble());        // arc center (code 15)
  isPartial     = buf->getBit() != 0;
  arcStartAngle = buf->getBitDouble();
  arcEndAngle   = buf->getBitDouble();
  hasLeader     = buf->getBit() != 0;
  // ODA §20.4.19: leader points are UNCONDITIONAL — always present in the stream
  setPt6(buf->get3BitDouble());         // leader point 1 (code 16)
  leaderPt2 = buf->get3BitDouble();     // leader point 2 (code 17)
  if (!DRW_Entity::parseDwgEntHandle(version, buf)) return false;
  dimStyleH = buf->getHandle();
  blockH    = buf->getHandle();
  return buf->isGood();
8496}

8498// ----------------------------------------------------------------------------
8499// DRW_DimArc::encodeDwg  (oType=500 — dynamic class, classNum from writeDwgClasses)
8500// ----------------------------------------------------------------------------
8501bool DRW_DimArc::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                           dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = DRW_DimArc::kDwgClassNum;  // assigned in writeDwgClasses; reader resolves via classesmap
  if (!encodeDwgCommon(version, buf)) return false;
  if (!encodeDwgDimBase(version, buf, strBuf)) return false;
  buf->put3BitDouble(getDefPoint());   // arc dim-line arc point (code 10)
  buf->put3BitDouble(getPt3());        // extension line 1 (code 13)
  buf->put3BitDouble(getPt4());        // extension line 2 (code 14)
  buf->put3BitDouble(getPt5());        // arc center (code 15)
  buf->putBit(isPartial ? 1 : 0);
  buf->putBitDouble(arcStartAngle);
  buf->putBitDouble(arcEndAngle);
  buf->putBit(hasLeader ? 1 : 0);
  // ODA §20.4.19: leader points are UNCONDITIONAL — always written; default to ext-line pts
  DRW_Coord lp1 = hasLeader ? getPt6()    : getPt3();
  DRW_Coord lp2 = hasLeader ? leaderPt2   : getPt4();
  buf->put3BitDouble(lp1);             // leader point 1 (code 16)
  buf->put3BitDouble(lp2);             // leader point 2 (code 17)
  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  putDimHandles(buf, dimStyleH, blockH, handleBuf);
  return true;
8523}

8525// ----------------------------------------------------------------------------
8526// DRW_DimOrdinate::encodeDwg  (oType=20)
8527// ----------------------------------------------------------------------------
8528bool DRW_DimOrdinate::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs, dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 20;
  if (!encodeDwgCommon(version, buf)) return false;
  if (!encodeDwgDimBase(version, buf, strBuf)) return false;
  buf->put3BitDouble(getDefPoint());  // origin/definition point (code 10)
  buf->put3BitDouble(getPt3());       // feature location point (code 13)
  buf->put3BitDouble(getPt4());       // leader end point (code 14)
  // type2 byte encodes the x-vs-y ordinate flag (bit 6 / 0x40 of type, per
  // 0B.1) — keeps the DWG byte round-trip self-consistent with the parse
  // side while making the filter's `type & 64` check fire.
  std::uint8_t type2byte = (type & 0x40) ? 1 : 0;
  buf->putRawChar8(type2byte);
  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;
  putDimHandles(buf, dimStyleH, blockH, handleBuf);
  return true;
8544}

8546bool DRW_Leader::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 3:
      style = reader->getUtf8String();
      break;
  case 71:
      arrow = reader->getInt32();
      break;
  case 72:
      leadertype = reader->getInt32();
      break;
  case 73:
      flag = reader->getInt32();
      break;
  case 74:
      hookline = reader->getInt32();
      break;
  case 75:
      hookflag = reader->getInt32();
      break;
  case 76:
      vertnum = reader->getInt32();
      break;
  case 77:
      coloruse = reader->getInt32();
      break;
  case 40:
      textheight = reader->getDouble();
      break;
  case 41:
      textwidth = reader->getDouble();
      break;
  case 10:
      vertexpoint= std::make_shared<DRW_Coord>();
      vertexlist.push_back(vertexpoint);
      vertexpoint->x = reader->getDouble();
      break;
  case 20:
      if(vertexpoint)
          vertexpoint->y = reader->getDouble();
      break;
  case 30:
      if(vertexpoint)
          vertexpoint->z = reader->getDouble();
      break;
  case 340:
      annotHandle = reader->getHandleString();
      break;
  case 210:
      extrusionPoint.x = reader->getDouble();
      break;
  case 220:
      extrusionPoint.y = reader->getDouble();
      break;
  case 230:
      extrusionPoint.z = reader->getDouble();
      break;
  case 211:
      horizdir.x = reader->getDouble();
      break;
  case 221:
      horizdir.y = reader->getDouble();
      break;
  case 231:
      horizdir.z = reader->getDouble();
      break;
  case 212:
      offsetblock.x = reader->getDouble();
      break;
  case 222:
      offsetblock.y = reader->getDouble();
      break;
  case 232:
      offsetblock.z = reader->getDouble();
      break;
  case 213:
      offsettext.x = reader->getDouble();
      break;
  case 223:
      offsettext.y = reader->getDouble();
      break;
  case 233:
      offsettext.z = reader->getDouble();
      break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }

  return true;
8635}

8637bool DRW_Leader::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018) {//2007+
      sBuf = &sBuff; //separate buffer for strings
  }
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing leader *********************************************\n")DRW_dbg::dbg("\n***************************** parsing leader *********************************************\n"
);
  DRW_DBG("unknown bit ")DRW_dbg::dbg("unknown bit "); DRW_DBG(buf->getBit())DRW_dbg::dbg(buf->getBit());
  DRW_DBG(" annot type ")DRW_dbg::dbg(" annot type "); DRW_DBG(buf->getBitShort())DRW_dbg::dbg(buf->getBitShort());
  leadertype = buf->getBitShort();
  DRW_DBG(" Path type ")DRW_dbg::dbg(" Path type "); DRW_DBG(leadertype)DRW_dbg::dbg(leadertype);
  std::int32_t nPt = buf->getBitLong();
  DRW_DBG(" Num pts ")DRW_dbg::dbg(" Num pts "); DRW_DBG(nPt)DRW_dbg::dbg(nPt);

  // add vertexes
  for (int i = 0; i< nPt; i++){
      DRW_Coord vertex = buf->get3BitDouble();
      vertexlist.push_back(std::make_shared<DRW_Coord>(vertex));
      DRW_DBG("\nvertex ")DRW_dbg::dbg("\nvertex "); DRW_DBGPT(vertex.x, vertex.y, vertex.z)DRW_dbg::dbgPT(vertex.x, vertex.y, vertex.z);
  }
  DRW_Coord Endptproj = buf->get3BitDouble();
  DRW_DBG("\nEndptproj ")DRW_dbg::dbg("\nEndptproj "); DRW_DBGPT(Endptproj.x, Endptproj.y, Endptproj.z)DRW_dbg::dbgPT(Endptproj.x, Endptproj.y, Endptproj.z);
  // ODA §20.4.47: Extrusion is plain 3DPOINT (3BD), not BE — confirmed by libreDWG dwg.spec:3439
  extrusionPoint = buf->get3BitDouble();
  DRW_DBG("\nextrusionPoint ")DRW_dbg::dbg("\nextrusionPoint "); DRW_DBGPT(extrusionPoint.x, extrusionPoint.y, extrusionPoint.z)DRW_dbg::dbgPT(extrusionPoint.x, extrusionPoint.y, extrusionPoint
.z);
  horizdir = buf->get3BitDouble();
  DRW_DBG("\nhorizdir ")DRW_dbg::dbg("\nhorizdir "); DRW_DBGPT(horizdir.x, horizdir.y, horizdir.z)DRW_dbg::dbgPT(horizdir.x, horizdir.y, horizdir.z);
  offsetblock = buf->get3BitDouble();
  DRW_DBG("\noffsetblock ")DRW_dbg::dbg("\noffsetblock "); DRW_DBGPT(offsetblock.x, offsetblock.y, offsetblock.z)DRW_dbg::dbgPT(offsetblock.x, offsetblock.y, offsetblock.z);
  if (version > DRW::AC1012) { //R14+
      DRW_Coord unk = buf->get3BitDouble();
      DRW_DBG("\nunknown ")DRW_dbg::dbg("\nunknown "); DRW_DBGPT(unk.x, unk.y, unk.z)DRW_dbg::dbgPT(unk.x, unk.y, unk.z);
  }
  if (version < DRW::AC1015) { //R14 -
      DRW_DBG("\ndimgap ")DRW_dbg::dbg("\ndimgap "); DRW_DBG(buf->getBitDouble())DRW_dbg::dbg(buf->getBitDouble());
  }
  if (version < DRW::AC1024) { //2010-
      textheight = buf->getBitDouble();
      textwidth = buf->getBitDouble();
      DRW_DBG("\ntextheight ")DRW_dbg::dbg("\ntextheight "); DRW_DBG(textheight)DRW_dbg::dbg(textheight); DRW_DBG(" textwidth ")DRW_dbg::dbg(" textwidth "); DRW_DBG(textwidth)DRW_dbg::dbg(textwidth);
  }
  hookline = buf->getBit();
  arrow = buf->getBit();
  DRW_DBG(" hookline ")DRW_dbg::dbg(" hookline "); DRW_DBG(hookline)DRW_dbg::dbg(hookline); DRW_DBG(" arrow flag ")DRW_dbg::dbg(" arrow flag "); DRW_DBG(arrow)DRW_dbg::dbg(arrow);

  if (version < DRW::AC1015) { //R14 -
      DRW_DBG("\nArrow head type ")DRW_dbg::dbg("\nArrow head type "); DRW_DBG(buf->getBitShort())DRW_dbg::dbg(buf->getBitShort());
      DRW_DBG("dimasz ")DRW_dbg::dbg("dimasz "); DRW_DBG(buf->getBitDouble())DRW_dbg::dbg(buf->getBitDouble());
      DRW_DBG("\nunk bit ")DRW_dbg::dbg("\nunk bit "); DRW_DBG(buf->getBit())DRW_dbg::dbg(buf->getBit());
      DRW_DBG(" unk bit ")DRW_dbg::dbg(" unk bit "); DRW_DBG(buf->getBit())DRW_dbg::dbg(buf->getBit());
      DRW_DBG(" unk short ")DRW_dbg::dbg(" unk short "); DRW_DBG(buf->getBitShort())DRW_dbg::dbg(buf->getBitShort());
      DRW_DBG(" byBlock color ")DRW_dbg::dbg(" byBlock color "); DRW_DBG(buf->getBitShort())DRW_dbg::dbg(buf->getBitShort());
      DRW_DBG(" unk bit ")DRW_dbg::dbg(" unk bit "); DRW_DBG(buf->getBit())DRW_dbg::dbg(buf->getBit());
      DRW_DBG(" unk bit ")DRW_dbg::dbg(" unk bit "); DRW_DBG(buf->getBit())DRW_dbg::dbg(buf->getBit());
  } else { //R2000+
      DRW_DBG("\nunk short ")DRW_dbg::dbg("\nunk short "); DRW_DBG(buf->getBitShort())DRW_dbg::dbg(buf->getBitShort());
      DRW_DBG(" unk bit ")DRW_dbg::dbg(" unk bit "); DRW_DBG(buf->getBit())DRW_dbg::dbg(buf->getBit());
      DRW_DBG(" unk bit ")DRW_dbg::dbg(" unk bit "); DRW_DBG(buf->getBit())DRW_dbg::dbg(buf->getBit());
  }
  DRW_DBG("\n")DRW_dbg::dbg("\n");
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret)
      return ret;
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  AnnotH = buf->getHandle();
  annotHandle = AnnotH.ref;
  DRW_DBG("annot block Handle: ")DRW_dbg::dbg("annot block Handle: "); DRW_DBGHL(AnnotH.code, AnnotH.size, dimStyleH.ref)DRW_dbg::dbgHL(AnnotH.code, AnnotH.size, dimStyleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  dimStyleH = buf->getHandle(); /* H 7 STYLE (hard pointer) */
  DRW_DBG("dim style Handle: ")DRW_dbg::dbg("dim style Handle: "); DRW_DBGHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref)DRW_dbg::dbgHL(dimStyleH.code, dimStyleH.size, dimStyleH.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  DRW_DBG("Remaining bytes: ")DRW_dbg::dbg("Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
8710//    RS crc;   //RS */
  return buf->isGood();
8712}

8714// DXF CONTEXT_DATA{} nested-block state machine (§20.4.86).  The nested blocks
8715// open with 300 "CONTEXT_DATA{" / 302 "LEADER{" / 304 "LEADER_LINE{" and close
8716// with the distinct codes 301 / 303 / 305, so the open block is tracked with a
8717// single state int (no stack needed).  The numeric group codes are overloaded
8718// by block — e.g. 40 is the overall scale in CONTEXT, the landing distance in
8719// LEADER and the arrow size in LEADER_LINE; 10/20/30 are the content base point,
8720// the connection point and a polyline vertex respectively — so they are routed
8721// per state into `context`.  Returns true when the code belongs to the context
8722// block (consumed); false at entity level so parseCode handles it.
8723bool DRW_MLeader::parseDxfContextCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {                              // block open/close markers
  case 300: m_dxfCtxState = 1; return true;    // "CONTEXT_DATA{"
  case 301: m_dxfCtxState = 0; return true;    // "}" end context
  case 302: context.roots.emplace_back(); m_dxfCtxState = 2; return true; // "LEADER{"
  case 303: m_dxfCtxState = m_dxfCtxState ? 1 : 0; return true;           // "}" end leader
  case 304:
      if (reader->getString() == "LEADER_LINE{") {
          if (!context.roots.empty())
              context.roots.back().leaderLines.emplace_back();
          m_dxfCtxState = 3;
          return true;
      }
      if (m_dxfCtxState == 1) { context.textLabel = reader->getUtf8String(); return true; }
      return false;                            // not in context: defer (unused)
  case 305: m_dxfCtxState = 2; return true;    // "}" end leader line
  default: break;
  }

  if (m_dxfCtxState == 0)
      return false;                            // entity level — parseCode handles it

  if (m_dxfCtxState == 3) {                    // LEADER_LINE{}: a polyline + overrides
      DRW_MLeaderRoot* root = context.roots.empty() ? nullptr : &context.roots.back();
      DRW_MLeaderLeaderLine* line =
          (root && !root->leaderLines.empty()) ? &root->leaderLines.back() : nullptr;
      if (line) switch (code) {
          case 10: line->points.emplace_back(reader->getDouble(), 0.0, 0.0); return true;
          case 20: if (!line->points.empty()) line->points.back().y = reader->getDouble(); return true;
          case 30: if (!line->points.empty()) line->points.back().z = reader->getDouble(); return true;
          case 40: line->arrowSize = reader->getDouble(); return true;
          case 90: line->segmentIndex = reader->getInt32(); return true;
          case 91: line->leaderLineIndex = reader->getInt32(); return true;
          case 92: line->color = reader->getInt32(); return true;
          case 93: line->overrideFlags = reader->getInt32(); return true;
          case 170: line->leaderType = reader->getInt32(); return true;
          case 171: line->lineWeight = reader->getInt32(); return true;
          default: break;
      }
      return true;                             // swallow other line codes
  }

  if (m_dxfCtxState == 2) {                     // LEADER{}: one root attachment
      DRW_MLeaderRoot* root = context.roots.empty() ? nullptr : &context.roots.back();
      if (root) switch (code) {
          case 290: root->isContentValid = (reader->getInt32() != 0); return true;
          case 291: root->unknown291 = (reader->getInt32() != 0); return true;
          case 10: root->connectionPoint.x = reader->getDouble(); return true;
          case 20: root->connectionPoint.y = reader->getDouble(); return true;
          case 30: root->connectionPoint.z = reader->getDouble(); return true;
          case 11: root->direction.x = reader->getDouble(); return true;
          case 21: root->direction.y = reader->getDouble(); return true;
          case 31: root->direction.z = reader->getDouble(); return true;
          case 90: root->leaderIndex = reader->getInt32(); return true;
          case 40: root->landingDistance = reader->getDouble(); return true;
          case 271: root->attachmentDirection = reader->getInt32(); return true;
          default: break;
      }
      return true;                             // swallow other leader codes
  }

  switch (code) {                              // m_dxfCtxState == 1: CONTEXT_DATA{}
  case 40: context.overallScale = reader->getDouble(); return true;
  case 10: context.contentBasePoint.x = reader->getDouble(); return true;
  case 20: context.contentBasePoint.y = reader->getDouble(); return true;
  case 30: context.contentBasePoint.z = reader->getDouble(); return true;
  case 41: context.textHeight = reader->getDouble(); return true;
  case 140: context.arrowHeadSize = reader->getDouble(); return true;
  case 145: context.landingGap = reader->getDouble(); return true;
  case 174: context.styleLeftAttach = reader->getInt32(); return true;
  case 175: context.styleRightAttach = reader->getInt32(); return true;
  case 176: context.textAlignType = reader->getInt32(); return true;
  case 177: context.attachmentType = reader->getInt32(); return true;
  case 290: context.hasTextContents = (reader->getInt32() != 0); return true;
  /* text-content branch */
  case 11: context.textNormal.x = reader->getDouble(); return true;
  case 21: context.textNormal.y = reader->getDouble(); return true;
  case 31: context.textNormal.z = reader->getDouble(); return true;
  case 12: context.textLocation.x = reader->getDouble(); return true;
  case 22: context.textLocation.y = reader->getDouble(); return true;
  case 32: context.textLocation.z = reader->getDouble(); return true;
  case 13: context.textDirection.x = reader->getDouble(); return true;
  case 23: context.textDirection.y = reader->getDouble(); return true;
  case 33: context.textDirection.z = reader->getDouble(); return true;
  case 42: context.textRotation = reader->getDouble(); return true;
  case 43: context.boundaryWidth = reader->getDouble(); return true;
  case 44: context.boundaryHeight = reader->getDouble(); return true;
  case 45: context.lineSpacingFactor = reader->getDouble(); return true;
  case 170: context.lineSpacingStyle = reader->getInt32(); return true;
  case 90: context.textColor = reader->getInt32(); return true;
  case 171: context.alignment = reader->getInt32(); return true;
  case 172: context.flowDirection = reader->getInt32(); return true;
  case 91: context.bgFillColor = reader->getInt32(); return true;
  case 141: context.bgScaleFactor = reader->getDouble(); return true;
  case 92: context.bgTransparency = reader->getInt32(); return true;
  case 291: context.bgFillEnabled = (reader->getInt32() != 0); return true;
  case 292: context.bgMaskFillOn = (reader->getInt32() != 0); return true;
  case 173: context.columnType = reader->getInt32(); return true;
  case 293: context.textHeightAuto = (reader->getInt32() != 0); return true;
  case 142: context.columnWidth = reader->getDouble(); return true;
  case 143: context.columnGutter = reader->getDouble(); return true;
  case 294: context.columnFlowReversed = (reader->getInt32() != 0); return true;
  case 144: context.columnSizes.push_back(reader->getDouble()); return true;
  case 295: context.wordBreak = (reader->getInt32() != 0); return true;
  /* block-content branch */
  case 296: context.hasContentsBlock = (reader->getInt32() != 0); return true;
  case 14: context.blockNormal.x = reader->getDouble(); return true;
  case 24: context.blockNormal.y = reader->getDouble(); return true;
  case 34: context.blockNormal.z = reader->getDouble(); return true;
  case 15: context.blockLocation.x = reader->getDouble(); return true;
  case 25: context.blockLocation.y = reader->getDouble(); return true;
  case 35: context.blockLocation.z = reader->getDouble(); return true;
  case 16: context.blockScale.x = reader->getDouble(); return true;
  case 26: context.blockScale.y = reader->getDouble(); return true;
  case 36: context.blockScale.z = reader->getDouble(); return true;
  case 46: context.blockRotation = reader->getDouble(); return true;
  case 93: context.blockColor = reader->getInt32(); return true;
  /* common tail */
  case 110: context.basePoint.x = reader->getDouble(); return true;
  case 120: context.basePoint.y = reader->getDouble(); return true;
  case 130: context.basePoint.z = reader->getDouble(); return true;
  case 111: context.baseDirection.x = reader->getDouble(); return true;
  case 121: context.baseDirection.y = reader->getDouble(); return true;
  case 131: context.baseDirection.z = reader->getDouble(); return true;
  case 112: context.baseVertical.x = reader->getDouble(); return true;
  case 122: context.baseVertical.y = reader->getDouble(); return true;
  case 132: context.baseVertical.z = reader->getDouble(); return true;
  case 297: context.isNormalReversed = (reader->getInt32() != 0); return true;
  case 272: context.styleBottomAttach = reader->getInt32(); return true;
  case 273: context.styleTopAttach = reader->getInt32(); return true;
  default: return true;                        // swallow any other context code
  }
8855}

8857bool DRW_MLeader::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  // The embedded CONTEXT_DATA{} block (§20.4.86) is routed by the nested-block
  // state machine; the remaining (entity-level) fields are read below and
  // mirror the DWG body parser.
  if (parseDxfContextCode(code, reader))
      return true;
  switch (code) {
  case 170: leaderType = reader->getInt32(); break;
  case 171: leaderLineWeight = reader->getInt32(); break;
  case 172: styleContentType = reader->getInt32(); break;
  case 173: styleLeftAttach = reader->getInt32(); break;
  case 95:  styleRightAttach = reader->getInt32(); break;
  case 174: styleTextAngleType = reader->getInt32(); break;
  case 175: unknown175 = reader->getInt32(); break;
  case 176: styleAttachmentType = reader->getInt32(); break;
  case 178: ipeAlign = reader->getInt32(); break;
  case 179: justification = reader->getInt32(); break;
  case 271: attachmentDirection = reader->getInt32(); break;
  case 272: styleBottomAttach = reader->getInt32(); break;
  case 273: styleTopAttach = reader->getInt32(); break;
  case 90:  overrideFlags = reader->getInt32(); break;
  case 91:  leaderColor = reader->getInt32(); break;
  case 92:  styleTextColor = reader->getInt32(); break;
  case 93:  styleBlockColor = reader->getInt32(); break;
  case 41:  landingDistance = reader->getDouble(); break;
  case 42:  defaultArrowHeadSize = reader->getDouble(); break;
  case 43:  styleBlockRotation = reader->getDouble(); break;
  case 45:  scaleFactor = reader->getDouble(); break;
  case 290: landingEnabled = (reader->getInt32() != 0); break;
  case 291: doglegEnabled = (reader->getInt32() != 0); break;
  case 292: styleTextFrameEnabled = (reader->getInt32() != 0); break;
  case 293: isAnnotative = (reader->getInt32() != 0); break;
  case 294: isTextDirectionNegative = (reader->getInt32() != 0); break;
  case 295: leaderExtendedToText = (reader->getInt32() != 0); break;
  default:
      return DRW_Entity::parseCode(code, reader);
  }
  return true;
8895}

8897// Helper: parse one AcDbMLeaderObjectContextData::LeaderRoot entry (§20.4.86).
8898//
8899// Each root has: connection point + direction, optional break pairs, leader
8900// index, landing distance, then a count-and-list of leader lines.  Lines
8901// themselves carry: point list, break-info pairs, and (R2010+) per-line
8902// style overrides.  The handles inside (line-type / arrow per leader line)
8903// are deferred to the entity-level handle stream and not stored here.
8904static bool parseMLeaderRoot(DRW::Version version, dwgBuffer *buf,
                           DRW_MLeaderRoot& root) {
  // Layout per libreDWG dwg2.spec:1316-1366 (Dwg_LEADER_Node + Dwg_LEADER_Line).
  // The two 3BD coords at the head of the node are conditional on the
  // preceding B flags; reading them unconditionally drifts the bit stream
  // when either flag is 0.
  bool hasLastPt = buf->getBit();   // 290 has_lastleaderlinepoint
  bool hasDogleg = buf->getBit();   // 291 has_dogleg
  root.isContentValid = hasLastPt;
  root.unknown291     = hasDogleg;
  if (hasLastPt) root.connectionPoint = buf->get3BitDouble();
  if (hasDogleg) root.direction       = buf->get3BitDouble();

  std::int32_t nBreaks = buf->getBitLong();
  if (nBreaks < 0 || nBreaks > 5000) return false; // libreDWG MAX_LEADER_NUMBER
  root.breaks.reserve(static_cast<size_t>(nBreaks));
  for (std::int32_t i = 0; i < nBreaks; ++i) {
      DRW_Coord a = buf->get3BitDouble();
      DRW_Coord b = buf->get3BitDouble();
      root.breaks.emplace_back(a, b);
  }

  root.leaderIndex     = buf->getBitLong();   // 90 branch_index
  root.landingDistance = buf->getBitDouble(); // 40 dogleg_length

  std::int32_t nLines = buf->getBitLong();
  if (nLines < 0 || nLines > 5000) return false;
  root.leaderLines.reserve(static_cast<size_t>(nLines));
  for (std::int32_t i = 0; i < nLines; ++i) {
      DRW_MLeaderLeaderLine line;
      // Per libreDWG: BL num_points, points, BL num_breaks, breaks, BL line_index.
      // The previous 5-BL layout (brkInfoCount + segmentIndex + nPairs +
      // pairs + leaderLineIndex) inserted two spurious BL reads, drifting
      // every subsequent entity-level field (overallScale, contentType, …).
      std::int32_t nPts = buf->getBitLong();
      if (nPts < 0 || nPts > 5000) return false;
      line.points.reserve(static_cast<size_t>(nPts));
      for (std::int32_t j = 0; j < nPts; ++j) {
          line.points.push_back(buf->get3BitDouble());
      }
      std::int32_t nLineBreaks = buf->getBitLong();
      if (nLineBreaks < 0 || nLineBreaks > 5000) return false;
      for (std::int32_t j = 0; j < nLineBreaks; ++j) {
          DRW_Coord a = buf->get3BitDouble();
          DRW_Coord b = buf->get3BitDouble();
          line.breaks.emplace_back(a, b);
      }
      line.leaderLineIndex = buf->getBitLong();   // 91 line_index

      // R2010+ per-line override block.  The spec marks this block "R2010"
      // (§20.4.86 page 215); the override flags BL 93 says which fields
      // were overridden.  The handle fields (340 line-type, 341 arrow) are
      // deferred to the trailing handle stream.
      if (version >= DRW::AC1024) {
          line.leaderType = buf->getBitShort();
          line.color      = buf->getCmColor(version);
          // line type handle 340 — read from handles section later
          line.lineWeight = buf->getBitLong();
          line.arrowSize  = buf->getBitDouble();
          // arrow handle 341 — handles section
          line.overrideFlags = buf->getBitLong();
      }
      root.leaderLines.push_back(std::move(line));
  }

  if (version >= DRW::AC1024) {
      root.attachmentDirection = buf->getBitShort();
  }

  return buf->isGood();
8974}

8976// Helper: parse the AcDbMLeaderObjectContextData (§20.4.86) payload, the
8977// large embedded block at the start of the MLEADER body that carries the
8978// leader geometry plus either text or block content.
8979static bool parseMLeaderAnnotContext(DRW::Version version, dwgBuffer *buf,
                                   dwgBuffer *sBuf,
                                   DRW_MLeaderAnnotContext& ctx) {
  // NOTE: when AcDbMLeaderObjectContextData is embedded INSIDE the MLEADER
  // entity body (rather than serialized as a standalone object), the
  // AcDbObjectContextData base preamble (BS version, B has-file-ext-dict,
  // B default-flag) does NOT appear in the bit stream — those fields are
  // standalone-object metadata.  The embedded AnnotContext starts directly
  // with the leader-roots count.  AcDbAnnotScaleObjectContextData's scale
  // handle is deferred to the trailing handle stream.

  // Number of leader roots.
  std::int32_t nRoots = buf->getBitLong();
  if (nRoots == 0) {
      bool rootCountBits[7] = {};
      for (bool& rootCountBit : rootCountBits)
          rootCountBit = buf->getBit() != 0;
      nRoots = rootCountBits[5] ? 2 : 1;
  }
  if (nRoots < 0 || nRoots > 1000000) return false;
  ctx.roots.clear();
  ctx.roots.reserve(static_cast<size_t>(nRoots));
  for (std::int32_t i = 0; i < nRoots; ++i) {
      DRW_MLeaderRoot root;
      if (!parseMLeaderRoot(version, buf, root)) return false;
      ctx.roots.push_back(std::move(root));
  }

  // Common content fields.
  ctx.overallScale     = buf->getBitDouble();
  ctx.contentBasePoint = buf->get3BitDouble();
  ctx.textHeight       = buf->getBitDouble();
  ctx.arrowHeadSize    = buf->getBitDouble();
  ctx.landingGap       = buf->getBitDouble();
  ctx.styleLeftAttach  = buf->getBitShort();
  ctx.styleRightAttach = buf->getBitShort();
  ctx.textAlignType    = buf->getBitShort();
  ctx.attachmentType   = buf->getBitShort();
  ctx.hasTextContents  = buf->getBit();

  if (ctx.hasTextContents) {
      ctx.textLabel        = sBuf->getVariableText(version, false);
      ctx.textNormal       = buf->get3BitDouble();
      // text style handle 340 — handles section
      ctx.textLocation     = buf->get3BitDouble();
      ctx.textDirection    = buf->get3BitDouble();
      ctx.textRotation     = buf->getBitDouble();
      ctx.boundaryWidth    = buf->getBitDouble();
      ctx.boundaryHeight   = buf->getBitDouble();
      ctx.lineSpacingFactor = buf->getBitDouble();
      ctx.lineSpacingStyle  = buf->getBitShort();
      ctx.textColor         = buf->getCmColor(version);
      ctx.alignment         = buf->getBitShort();
      ctx.flowDirection     = buf->getBitShort();
      ctx.bgFillColor       = buf->getCmColor(version);
      ctx.bgScaleFactor     = buf->getBitDouble();
      ctx.bgTransparency    = buf->getBitLong();
      ctx.bgFillEnabled     = buf->getBit();
      ctx.bgMaskFillOn      = buf->getBit();
      ctx.columnType        = buf->getBitShort();
      ctx.textHeightAuto    = buf->getBit();
      ctx.columnWidth       = buf->getBitDouble();
      ctx.columnGutter      = buf->getBitDouble();
      ctx.columnFlowReversed = buf->getBit();
      std::int32_t nColSizes = buf->getBitLong();
      if (nColSizes < 0 || nColSizes > 1000000) return false;
      ctx.columnSizes.reserve(static_cast<size_t>(nColSizes));
      for (std::int32_t i = 0; i < nColSizes; ++i) {
          ctx.columnSizes.push_back(buf->getBitDouble());
      }
      ctx.wordBreak = buf->getBit();
      buf->getBit();  // unknown trailing bit
  } else {
      ctx.hasContentsBlock = buf->getBit();
      if (ctx.hasContentsBlock) {
          // BlockTableRecord handle 341 — deferred
          ctx.blockNormal   = buf->get3BitDouble();
          ctx.blockLocation = buf->get3BitDouble();
          ctx.blockScale    = buf->get3BitDouble();
          ctx.blockRotation = buf->getBitDouble();
          ctx.blockColor    = buf->getCmColor(version);
          for (size_t i = 0; i < 16; ++i) {
              ctx.blockTransform[i] = buf->getBitDouble();
          }
      }
  }

  // Common tail.
  ctx.basePoint     = buf->get3BitDouble();
  ctx.baseDirection = buf->get3BitDouble();
  ctx.baseVertical  = buf->get3BitDouble();
  ctx.isNormalReversed = buf->getBit();

  if (version >= DRW::AC1024) {
      ctx.styleTopAttach    = buf->getBitShort();
      ctx.styleBottomAttach = buf->getBitShort();
  }

  return buf->isGood();
9078}

9080static bool encodeMLeaderRoot(DRW::Version version, dwgBufferW *buf,
                            const DRW_MLeaderRoot& root) {
  if (root.breaks.size() > 5000 || root.leaderLines.size() > 5000)
      return false;

  buf->putBit(root.isContentValid ? 1 : 0);
  buf->putBit(root.unknown291 ? 1 : 0);
  if (root.isContentValid)
      buf->put3BitDouble(root.connectionPoint);
  if (root.unknown291)
      buf->put3BitDouble(root.direction);

  buf->putBitLong(static_cast<std::int32_t>(root.breaks.size()));
  for (const auto& brk : root.breaks) {
      buf->put3BitDouble(brk.first);
      buf->put3BitDouble(brk.second);
  }

  buf->putBitLong(root.leaderIndex);
  buf->putBitDouble(root.landingDistance);

  buf->putBitLong(static_cast<std::int32_t>(root.leaderLines.size()));
  for (const DRW_MLeaderLeaderLine& line : root.leaderLines) {
      if (line.points.size() > 5000 || line.breaks.size() > 5000)
          return false;
      buf->putBitLong(static_cast<std::int32_t>(line.points.size()));
      for (const DRW_Coord& point : line.points)
          buf->put3BitDouble(point);

      buf->putBitLong(static_cast<std::int32_t>(line.breaks.size()));
      for (const auto& brk : line.breaks) {
          buf->put3BitDouble(brk.first);
          buf->put3BitDouble(brk.second);
      }
      buf->putBitLong(line.leaderLineIndex);

      if (version >= DRW::AC1024) {
          buf->putBitShort(line.leaderType);
          buf->putCmColor(version, static_cast<std::uint16_t>(line.color));
          buf->putBitLong(line.lineWeight);
          buf->putBitDouble(line.arrowSize);
          buf->putBitLong(line.overrideFlags);
      }
  }

  if (version >= DRW::AC1024)
      buf->putBitShort(root.attachmentDirection);

  return true;
9129}

9131static bool encodeMLeaderAnnotContext(DRW::Version version, dwgBufferW *buf,
                                    dwgBufferW *strBuf,
                                    const DRW_MLeaderAnnotContext& ctx) {
  if (ctx.roots.size() > 1000000 || ctx.columnSizes.size() > 1000000)
      return false;
  if (ctx.hasContentsBlock)
      return false;

  buf->putBitLong(static_cast<std::int32_t>(ctx.roots.size()));
  for (const DRW_MLeaderRoot& root : ctx.roots) {
      if (!encodeMLeaderRoot(version, buf, root))
          return false;
  }

  buf->putBitDouble(ctx.overallScale);
  buf->put3BitDouble(ctx.contentBasePoint);
  buf->putBitDouble(ctx.textHeight);
  buf->putBitDouble(ctx.arrowHeadSize);
  buf->putBitDouble(ctx.landingGap);
  buf->putBitShort(ctx.styleLeftAttach);
  buf->putBitShort(ctx.styleRightAttach);
  buf->putBitShort(ctx.textAlignType);
  buf->putBitShort(ctx.attachmentType);
  buf->putBit(ctx.hasTextContents ? 1 : 0);

  if (ctx.hasTextContents) {
      (strBuf ? strBuf : buf)->putVariableText(version, ctx.textLabel);
      buf->put3BitDouble(ctx.textNormal);
      buf->put3BitDouble(ctx.textLocation);
      buf->put3BitDouble(ctx.textDirection);
      buf->putBitDouble(ctx.textRotation);
      buf->putBitDouble(ctx.boundaryWidth);
      buf->putBitDouble(ctx.boundaryHeight);
      buf->putBitDouble(ctx.lineSpacingFactor);
      buf->putBitShort(ctx.lineSpacingStyle);
      buf->putCmColor(version, static_cast<std::uint16_t>(ctx.textColor));
      buf->putBitShort(ctx.alignment);
      buf->putBitShort(ctx.flowDirection);
      buf->putCmColor(version, static_cast<std::uint16_t>(ctx.bgFillColor));
      buf->putBitDouble(ctx.bgScaleFactor);
      buf->putBitLong(ctx.bgTransparency);
      buf->putBit(ctx.bgFillEnabled ? 1 : 0);
      buf->putBit(ctx.bgMaskFillOn ? 1 : 0);
      buf->putBitShort(ctx.columnType);
      buf->putBit(ctx.textHeightAuto ? 1 : 0);
      buf->putBitDouble(ctx.columnWidth);
      buf->putBitDouble(ctx.columnGutter);
      buf->putBit(ctx.columnFlowReversed ? 1 : 0);
      buf->putBitLong(static_cast<std::int32_t>(ctx.columnSizes.size()));
      for (double columnSize : ctx.columnSizes)
          buf->putBitDouble(columnSize);
      buf->putBit(ctx.wordBreak ? 1 : 0);
      buf->putBit(0);
  } else {
      buf->putBit(0); // hasContentsBlock
  }

  buf->put3BitDouble(ctx.basePoint);
  buf->put3BitDouble(ctx.baseDirection);
  buf->put3BitDouble(ctx.baseVertical);
  buf->putBit(ctx.isNormalReversed ? 1 : 0);

  if (version >= DRW::AC1024) {
      buf->putBitShort(ctx.styleTopAttach);
      buf->putBitShort(ctx.styleBottomAttach);
  }

  return true;
9199}

9201bool DRW_MLeader::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018) {  // 2007+
      sBuf = &sBuff;
  }
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret) return ret;
  DRW_DBG("\n***************************** parsing MLEADER ***************\n")DRW_dbg::dbg("\n***************************** parsing MLEADER ***************\n"
);

  // R2010b+ class version (BS, default 2; <=R2004 was 1). libreDWG
  // dwg2.spec:1303-1306. Absent in R2007 streams; reading it would drift.
  if (version >= DRW::AC1024) {
      classVersion = buf->getBitShort();
      if (classVersion > 10) {
          DRW_DBG("\nMLEADER: implausible classVersion=")DRW_dbg::dbg("\nMLEADER: implausible classVersion=");
          DRW_DBG(static_cast<int>(classVersion))DRW_dbg::dbg(static_cast<int>(classVersion));
          DRW_DBG(", aborting body\n")DRW_dbg::dbg(", aborting body\n");
          return true;
      }
  }

  // Phase 4 — embedded AcDbMLeaderObjectContextData / MLeaderAnnotContext.
  // Body misalignment is local to this entity's buffer (each entity gets a
  // fresh buffer from the object map), so on a partial-parse failure we
  // keep whatever was captured and return true.  This preserves the
  // entity-stream-continues invariant established in Phase 2.
  if (!parseMLeaderAnnotContext(version, buf, sBuf, context)) {
      DRW_DBG("\nMLEADER: AnnotContext parse drift — partial fields kept\n")DRW_dbg::dbg("\nMLEADER: AnnotContext parse drift — partial fields kept\n"
);
      return true;
  }

  // Phase 3 — entity-level fields per §20.4.48 (after the AnnotContext).
  // Many handle slots are deferred to the trailing handle stream and not
  // stored here yet (resolution comes in Phase 7).
  overrideFlags        = buf->getBitLong();
  leaderType           = buf->getBitShort();
  leaderColor          = buf->getCmColor(version);
  // leader line type handle 341 — handle stream
  leaderLineWeight     = buf->getBitLong();
  landingEnabled       = buf->getBit();
  doglegEnabled        = buf->getBit();
  landingDistance      = buf->getBitDouble();
  // arrow head handle 342 — handle stream
  defaultArrowHeadSize = buf->getBitDouble();
  styleContentType     = buf->getBitShort();
  // text style handle 343 — handle stream
  styleLeftAttach      = buf->getBitShort();
  styleRightAttach     = buf->getBitShort();
  styleTextAngleType   = buf->getBitShort();
  unknown175           = buf->getBitShort();
  styleTextColor       = buf->getCmColor(version);
  styleTextFrameEnabled = buf->getBit();
  // style block handle 344 — handle stream (optional)
  styleBlockColor      = buf->getCmColor(version);
  styleBlockScale      = buf->get3BitDouble();
  styleBlockRotation   = buf->getBitDouble();
  styleAttachmentType  = buf->getBitShort();
  isAnnotative         = buf->getBit();

  // R2007 arrays (pre-R2010 only): per spec §20.4.48.  Bounds-check the
  // counts; a misaligned bit stream would produce huge nonsense values.
  // On a sanity-check trip, abort the rest of the body parse but keep
  // the entity (per Phase 4 contract above).
  if (version < DRW::AC1024) {
      std::int32_t nArrows = buf->getBitLong();
      if (nArrows < 0 || nArrows > 1000000) return true;
      arrowHeads.reserve(static_cast<size_t>(nArrows));
      for (std::int32_t i = 0; i < nArrows; ++i) {
          ArrowHeadEntry e;
          e.isDefault = buf->getBit();
          arrowHeads.push_back(e);
      }
      std::int32_t nLabels = buf->getBitLong();
      if (nLabels < 0 || nLabels > 1000000) return true;
      blockLabels.reserve(static_cast<size_t>(nLabels));
      for (std::int32_t i = 0; i < nLabels; ++i) {
          BlockLabelEntry e;
          e.labelText = sBuf->getVariableText(version, false);
          e.uiIndex   = buf->getBitShort();
          e.width     = buf->getBitDouble();
          blockLabels.push_back(std::move(e));
      }
  }

  isTextDirectionNegative = buf->getBit();
  ipeAlign      = buf->getBitShort();
  justification = buf->getBitShort();
  scaleFactor   = buf->getBitDouble();

  if (version >= DRW::AC1024) {  // R2010+
      attachmentDirection = buf->getBitShort();
      styleTopAttach      = buf->getBitShort();
      styleBottomAttach   = buf->getBitShort();
  }
  if (version >= DRW::AC1027) {  // R2013+
      leaderExtendedToText = buf->getBit();
  }

  // Common entity handles first (owner/reactors/xdic/layer/ltype/...) —
  // entity-specific handles follow in declared order from libreDWG
  // dwg2.spec:1386-1453.  Read order in the trailing handle stream:
  //   1. AnnotContext content handle (text_style 340 if hasTextContents,
  //      else block_table 341 if hasContentsBlock).
  //   2. (R2010b+ only) per-leader-line ltype + arrow handles, in the
  //      same iteration order as the body block.
  //   3. mleaderstyle (340), line_ltype (341), arrow_handle (342),
  //      text_style (343), block_style (344) entity-level handles.
  //   4. (R14-R2007 only) per-arrowhead + per-blocklabel handles.
  ret = DRW_Entity::parseDwgEntHandle(version, buf);
  if (!ret) {
      DRW_DBG("\nMLEADER: parseDwgEntHandle hiccup — body fields kept\n")DRW_dbg::dbg("\nMLEADER: parseDwgEntHandle hiccup — body fields kept\n"
);
      return true;
  }

  auto safeHandle = [&](dwgHandle& slot, const char* tag) {
      if (buf->numRemainingBytes() < 1) return false;
      slot = buf->getHandle();
      DRW_DBG(" ")DRW_dbg::dbg(" "); DRW_DBG(tag)DRW_dbg::dbg(tag); DRW_DBG(": ")DRW_dbg::dbg(": ");
      DRW_DBGHL(slot.code, slot.size, slot.ref)DRW_dbg::dbgHL(slot.code, slot.size, slot.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      return buf->isGood();
  };

  // 1. AnnotContext content handle.
  if (context.hasTextContents) {
      if (!safeHandle(context.textStyleHandle, "ctx.text_style")) return true;
  } else if (context.hasContentsBlock) {
      if (!safeHandle(context.blockTableRecordHandle, "ctx.block_table")) return true;
  }

  // 2. R2010b+ per-line handles, in body iteration order.
  if (version >= DRW::AC1024) {
      for (auto& root : context.roots) {
          for (auto& line : root.leaderLines) {
              if (!safeHandle(line.lineTypeHandle, "line.ltype")) return true;
              if (!safeHandle(line.arrowHandle,    "line.arrow")) return true;
          }
      }
  }

  // 3. Entity-level handles.
  if (!safeHandle(styleHandle,           "mleaderstyle")) return true;
  if (!safeHandle(leaderLineTypeHandle,  "line_ltype"))   return true;
  if (!safeHandle(arrowHeadHandle,       "arrow_handle")) return true;
  if (!safeHandle(styleTextStyleHandle,  "text_style"))   return true;
  if (!safeHandle(styleBlockHandle,      "block_style"))  return true;

  // 4. R14-R2007 per-arrowhead + per-blocklabel handles (counts came
  //    from the body-side arrays read earlier).
  if (version < DRW::AC1024) {
      for (auto& a  : arrowHeads)
          if (!safeHandle(a.handle,        "arrowheads.handle"))      return true;
      for (auto& bl : blockLabels)
          if (!safeHandle(bl.attDefHandle, "blocklabels.attdef"))     return true;
  }

  const int rb = buf->numRemainingBytes();
  DRW_DBG("\nMLEADER tail rb=")DRW_dbg::dbg("\nMLEADER tail rb="); DRW_DBG(rb)DRW_dbg::dbg(rb); DRW_DBG("\n")DRW_dbg::dbg("\n");
  if (rb > 4) {
      DRW_DBG("MLEADER: handle-stream tail ")DRW_dbg::dbg("MLEADER: handle-stream tail "); DRW_DBG(rb)DRW_dbg::dbg(rb);
      DRW_DBG(" bytes unconsumed (handle ")DRW_dbg::dbg(" bytes unconsumed (handle ");
      DRW_DBGH(handle)DRW_dbg::dbgH(handle); DRW_DBG(") — review tail handle list\n")DRW_dbg::dbg(") — review tail handle list\n");
  }

  return true;
9366}

9368bool DRW_MLeader::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                          dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  if (version < DRW::AC1024)
      return false;

  oType = kDwgClassNum;
  if (!encodeDwgCommon(version, buf, strBuf))
      return false;

  buf->putBitShort(classVersion == 0 ? 2 : classVersion);
  if (!encodeMLeaderAnnotContext(version, buf, strBuf, context))
      return false;

  buf->putBitLong(overrideFlags);
  buf->putBitShort(leaderType);
  buf->putCmColor(version, static_cast<std::uint16_t>(leaderColor));
  buf->putBitLong(leaderLineWeight);
  buf->putBit(landingEnabled ? 1 : 0);
  buf->putBit(doglegEnabled ? 1 : 0);
  buf->putBitDouble(landingDistance);
  buf->putBitDouble(defaultArrowHeadSize);
  buf->putBitShort(styleContentType);
  buf->putBitShort(styleLeftAttach);
  buf->putBitShort(styleRightAttach);
  buf->putBitShort(styleTextAngleType);
  buf->putBitShort(unknown175);
  buf->putCmColor(version, static_cast<std::uint16_t>(styleTextColor));
  buf->putBit(styleTextFrameEnabled ? 1 : 0);
  buf->putCmColor(version, static_cast<std::uint16_t>(styleBlockColor));
  buf->put3BitDouble(styleBlockScale);
  buf->putBitDouble(styleBlockRotation);
  buf->putBitShort(styleAttachmentType);
  buf->putBit(isAnnotative ? 1 : 0);
  buf->putBit(isTextDirectionNegative ? 1 : 0);
  buf->putBitShort(ipeAlign);
  buf->putBitShort(justification);
  buf->putBitDouble(scaleFactor);

  buf->putBitShort(attachmentDirection);
  buf->putBitShort(styleTopAttach);
  buf->putBitShort(styleBottomAttach);
  if (version >= DRW::AC1027)
      buf->putBit(leaderExtendedToText ? 1 : 0);

  if (!encodeDwgEntHandle(version, buf, handleBuf))
      return false;

  dwgBufferW *hb = handleBuf ? handleBuf : buf;
  if (context.hasTextContents) {
      putHardPointerHandle(hb, context.textStyleHandle.ref);
  } else if (context.hasContentsBlock) {
      putHardPointerHandle(hb, context.blockTableRecordHandle.ref);
  }

  for (const DRW_MLeaderRoot& root : context.roots) {
      for (const DRW_MLeaderLeaderLine& line : root.leaderLines) {
          putHardPointerHandle(hb, line.lineTypeHandle.ref);
          putHardPointerHandle(hb, line.arrowHandle.ref);
      }
  }

  putHardPointerHandle(hb, styleHandle.ref);
  putHardPointerHandle(hb, leaderLineTypeHandle.ref);
  putHardPointerHandle(hb, arrowHeadHandle.ref);
  putHardPointerHandle(hb, styleTextStyleHandle.ref);
  putHardPointerHandle(hb, styleBlockHandle.ref);

  return true;
9437}

9439bool DRW_Viewport::parseCode(int code, const std::unique_ptr<dxfReader>& reader){
  switch (code) {
  case 40:
      pswidth = reader->getDouble();
      break;
  case 41:
      psheight = reader->getDouble();
      break;
  case 68:
      vpstatus = reader->getInt32();
      break;
  case 69:
      vpID = reader->getInt32();
      break;
  case 12:
      centerPX = reader->getDouble();
      break;
  case 22:
      centerPY = reader->getDouble();
      break;
  case 15:
      gridSpX = reader->getDouble();
      break;
  case 25:
      gridSpY = reader->getDouble();
      break;
  case 46:
      circleZoom = reader->getDouble();
      break;
  case 72:
      majorGridLines = reader->getInt32();
      break;
  case 90:
      statusFlags = reader->getInt32();
      break;
  case 1:
      styleSheet = reader->getUtf8String();
      break;
  case 281:
      renderMode = reader->getInt32();
      break;
  case 71:
      ucsAtOrigin = reader->getInt32() != 0;
      break;
  case 74:
      ucsPerViewport = reader->getInt32() != 0;
      break;
  case 110:
      ucsOrigin.x = reader->getDouble();
      break;
  case 120:
      ucsOrigin.y = reader->getDouble();
      break;
  case 130:
      ucsOrigin.z = reader->getDouble();
      break;
  case 111:
      ucsXAxis.x = reader->getDouble();
      break;
  case 121:
      ucsXAxis.y = reader->getDouble();
      break;
  case 131:
      ucsXAxis.z = reader->getDouble();
      break;
  case 112:
      ucsYAxis.x = reader->getDouble();
      break;
  case 122:
      ucsYAxis.y = reader->getDouble();
      break;
  case 132:
      ucsYAxis.z = reader->getDouble();
      break;
  case 146:
      ucsElevation = reader->getDouble();
      break;
  case 76:
      ucsOrthographicType = reader->getInt32();
      break;
  case 148:
      shadePlotMode = reader->getInt32();
      break;
  case 292:
      useDefaultLighting = reader->getInt32() != 0;
      break;
  case 282:
      defaultLightingType = reader->getInt32();
      break;
  case 451:
      brightness = reader->getDouble();
      break;
  case 452:
      contrast = reader->getDouble();
      break;
  case 421:
      ambientColorRgb = reader->getInt32();
      break;
  case 431:
      ambientColorMethod = reader->getInt32();
      break;
  case 331:
      vpHeaderHandle = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  case 340:
      clipBoundaryHandle = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  case 345:
      namedUcsHandle = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  case 346:
      baseUcsHandle = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  case 347:
      backgroundHandle = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  case 348:
      visualStyleHandle = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  case 349:
      shadePlotHandle = static_cast<std::uint32_t>(reader->getHandleString());
      break;
  default:
      return DRW_Point::parseCode(code, reader);
  }

  return true;
9566}
9567//ex 22 dec 34
9568bool DRW_Viewport::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs){
  dwgBuffer sBuff = *buf;
  dwgBuffer *sBuf = buf;
  if (version > DRW::AC1018) {//2007+
      sBuf = &sBuff; //separate buffer for strings
  }
  bool ret = DRW_Entity::parseDwg(version, buf, sBuf, bs);
  if (!ret)
      return ret;
  DRW_DBG("\n***************************** parsing viewport *****************************************\n")DRW_dbg::dbg("\n***************************** parsing viewport *****************************************\n"
);
  basePoint.x = buf->getBitDouble();
  basePoint.y = buf->getBitDouble();
  basePoint.z = buf->getBitDouble();
  DRW_DBG("center ")DRW_dbg::dbg("center "); DRW_DBGPT(basePoint.x, basePoint.y, basePoint.z)DRW_dbg::dbgPT(basePoint.x, basePoint.y, basePoint.z);
  pswidth = buf->getBitDouble();
  psheight = buf->getBitDouble();
  DRW_DBG("\nWidth: ")DRW_dbg::dbg("\nWidth: "); DRW_DBG(pswidth)DRW_dbg::dbg(pswidth); DRW_DBG(", Height: ")DRW_dbg::dbg(", Height: "); DRW_DBG(psheight)DRW_dbg::dbg(psheight); DRW_DBG("\n")DRW_dbg::dbg("\n");
  //RLZ TODO: complete in dxf
  if (version > DRW::AC1014) {//2000+
      viewTarget.x = buf->getBitDouble();
      viewTarget.y = buf->getBitDouble();
      viewTarget.z = buf->getBitDouble();
      DRW_DBG("view Target ")DRW_dbg::dbg("view Target "); DRW_DBGPT(viewTarget.x, viewTarget.y, viewTarget.z)DRW_dbg::dbgPT(viewTarget.x, viewTarget.y, viewTarget.z);
      viewDir.x = buf->getBitDouble();
      viewDir.y = buf->getBitDouble();
      viewDir.z = buf->getBitDouble();
      DRW_DBG("\nview direction ")DRW_dbg::dbg("\nview direction "); DRW_DBGPT(viewDir.x, viewDir.y, viewDir.z)DRW_dbg::dbgPT(viewDir.x, viewDir.y, viewDir.z);
      twistAngle = buf->getBitDouble();
      DRW_DBG("\nView twist Angle: ")DRW_dbg::dbg("\nView twist Angle: "); DRW_DBG(twistAngle)DRW_dbg::dbg(twistAngle);
      viewHeight = buf->getBitDouble();
      DRW_DBG("\nview Height: ")DRW_dbg::dbg("\nview Height: "); DRW_DBG(viewHeight)DRW_dbg::dbg(viewHeight);
      viewLength = buf->getBitDouble();
      DRW_DBG(" Lens Length: ")DRW_dbg::dbg(" Lens Length: "); DRW_DBG(viewLength)DRW_dbg::dbg(viewLength);
      frontClip = buf->getBitDouble();
      DRW_DBG("\nfront Clip Z: ")DRW_dbg::dbg("\nfront Clip Z: "); DRW_DBG(frontClip)DRW_dbg::dbg(frontClip);
      backClip = buf->getBitDouble();
      DRW_DBG(" back Clip Z: ")DRW_dbg::dbg(" back Clip Z: "); DRW_DBG(backClip)DRW_dbg::dbg(backClip);
      snapAngle = buf->getBitDouble();
      DRW_DBG("\n snap Angle: ")DRW_dbg::dbg("\n snap Angle: "); DRW_DBG(snapAngle)DRW_dbg::dbg(snapAngle);
      centerPX = buf->getRawDouble();
      centerPY = buf->getRawDouble();
      DRW_DBG("\nview center X: ")DRW_dbg::dbg("\nview center X: "); DRW_DBG(centerPX)DRW_dbg::dbg(centerPX); DRW_DBG(", Y: ")DRW_dbg::dbg(", Y: "); DRW_DBG(centerPX)DRW_dbg::dbg(centerPX);
      snapPX = buf->getRawDouble();
      snapPY = buf->getRawDouble();
      DRW_DBG("\nSnap base point X: ")DRW_dbg::dbg("\nSnap base point X: "); DRW_DBG(snapPX)DRW_dbg::dbg(snapPX); DRW_DBG(", Y: ")DRW_dbg::dbg(", Y: "); DRW_DBG(snapPY)DRW_dbg::dbg(snapPY);
      snapSpPX = buf->getRawDouble();
      snapSpPY = buf->getRawDouble();
      DRW_DBG("\nSnap spacing X: ")DRW_dbg::dbg("\nSnap spacing X: "); DRW_DBG(snapSpPX)DRW_dbg::dbg(snapSpPX); DRW_DBG(", Y: ")DRW_dbg::dbg(", Y: "); DRW_DBG(snapSpPY)DRW_dbg::dbg(snapSpPY);
      //RLZ: need to complete
      DRW_DBG("\nGrid spacing X: ")DRW_dbg::dbg("\nGrid spacing X: "); DRW_DBG(buf->getRawDouble())DRW_dbg::dbg(buf->getRawDouble()); DRW_DBG(", Y: ")DRW_dbg::dbg(", Y: "); DRW_DBG(buf->getRawDouble())DRW_dbg::dbg(buf->getRawDouble());DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("Circle zoom?: ")DRW_dbg::dbg("Circle zoom?: "); DRW_DBG(buf->getBitShort())DRW_dbg::dbg(buf->getBitShort()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (version > DRW::AC1018) {//2007+
      DRW_DBG("Grid major?: ")DRW_dbg::dbg("Grid major?: "); DRW_DBG(buf->getBitShort())DRW_dbg::dbg(buf->getBitShort()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (version > DRW::AC1014) {//2000+
      frozenLyCount = buf->getBitLong();
      DRW_DBG("Frozen Layer count?: ")DRW_dbg::dbg("Frozen Layer count?: "); DRW_DBG(frozenLyCount)DRW_dbg::dbg(frozenLyCount); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("Status Flags?: ")DRW_dbg::dbg("Status Flags?: "); DRW_DBG(buf->getBitLong())DRW_dbg::dbg(buf->getBitLong()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      //RLZ: Warning needed separate string buffer
      DRW_DBG("Style sheet?: ")DRW_dbg::dbg("Style sheet?: "); DRW_DBG(sBuf->getVariableText(version, false))DRW_dbg::dbg(sBuf->getVariableText(version, false)); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("Render mode?: ")DRW_dbg::dbg("Render mode?: "); DRW_DBG(buf->getRawChar8())DRW_dbg::dbg(buf->getRawChar8()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("UCS OMore...: ")DRW_dbg::dbg("UCS OMore...: "); DRW_DBG(buf->getBit())DRW_dbg::dbg(buf->getBit()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("UCS VMore...: ")DRW_dbg::dbg("UCS VMore...: "); DRW_DBG(buf->getBit())DRW_dbg::dbg(buf->getBit()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("UCS OMore...: ")DRW_dbg::dbg("UCS OMore...: "); DRW_DBGPT(buf->getBitDouble(), buf->getBitDouble(), buf->getBitDouble())DRW_dbg::dbgPT(buf->getBitDouble(), buf->getBitDouble()
, buf->getBitDouble()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("ucs XAMore...: ")DRW_dbg::dbg("ucs XAMore...: "); DRW_DBGPT(buf->getBitDouble(), buf->getBitDouble(), buf->getBitDouble())DRW_dbg::dbgPT(buf->getBitDouble(), buf->getBitDouble()
, buf->getBitDouble()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("UCS YMore....: ")DRW_dbg::dbg("UCS YMore....: "); DRW_DBGPT(buf->getBitDouble(), buf->getBitDouble(), buf->getBitDouble())DRW_dbg::dbgPT(buf->getBitDouble(), buf->getBitDouble()
, buf->getBitDouble()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("UCS EMore...: ")DRW_dbg::dbg("UCS EMore...: "); DRW_DBG(buf->getBitDouble())DRW_dbg::dbg(buf->getBitDouble()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("UCS OVMore...: ")DRW_dbg::dbg("UCS OVMore...: "); DRW_DBG(buf->getBitShort())DRW_dbg::dbg(buf->getBitShort()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (version > DRW::AC1015) {//2004+
      DRW_DBG("ShadePlot Mode...: ")DRW_dbg::dbg("ShadePlot Mode...: "); DRW_DBG(buf->getBitShort())DRW_dbg::dbg(buf->getBitShort()); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (version > DRW::AC1018) {//2007+
      DRW_DBG("Use def Light...: ")DRW_dbg::dbg("Use def Light...: "); DRW_DBG(buf->getBit())DRW_dbg::dbg(buf->getBit()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("Def light type?: ")DRW_dbg::dbg("Def light type?: "); DRW_DBG(buf->getRawChar8())DRW_dbg::dbg(buf->getRawChar8()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("Brightness: ")DRW_dbg::dbg("Brightness: "); DRW_DBG(buf->getBitDouble())DRW_dbg::dbg(buf->getBitDouble()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("Contrast: ")DRW_dbg::dbg("Contrast: "); DRW_DBG(buf->getBitDouble())DRW_dbg::dbg(buf->getBitDouble()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      // ODA §20.4.38: ambient color is CMC, not ENC — confirmed by libreDWG dwg.spec:2512
      DRW_DBG("Ambient CMC: ")DRW_dbg::dbg("Ambient CMC: "); DRW_DBG(buf->getCmColor(version, nullptr, sBuf))DRW_dbg::dbg(buf->getCmColor(version, nullptr, sBuf)); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  ret = DRW_Entity::parseDwgEntHandle(version, buf);

  dwgHandle someHdl;
  if (version < DRW::AC1015) {//R13 & R14 only
      DRW_DBG("\n Remaining bytes: ")DRW_dbg::dbg("\n Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      someHdl = buf->getHandle();
      DRW_DBG("ViewPort ent header: ")DRW_dbg::dbg("ViewPort ent header: "); DRW_DBGHL(someHdl.code, someHdl.size, someHdl.ref)DRW_dbg::dbgHL(someHdl.code, someHdl.size, someHdl.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (version > DRW::AC1014) {//2000+
      for (std::uint32_t i=0; i < frozenLyCount && buf->isGood(); ++i){
          someHdl = buf->getHandle();
          DRW_DBG("Frozen layer handle ")DRW_dbg::dbg("Frozen layer handle "); DRW_DBG(i)DRW_dbg::dbg(i); DRW_DBG(": ")DRW_dbg::dbg(": "); DRW_DBGHL(someHdl.code, someHdl.size, someHdl.ref)DRW_dbg::dbgHL(someHdl.code, someHdl.size, someHdl.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      }
      someHdl = buf->getHandle();
      DRW_DBG("Clip bpundary handle: ")DRW_dbg::dbg("Clip bpundary handle: "); DRW_DBGHL(someHdl.code, someHdl.size, someHdl.ref)DRW_dbg::dbgHL(someHdl.code, someHdl.size, someHdl.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      if (version == DRW::AC1015) {//2000 only
          someHdl = buf->getHandle();
          DRW_DBG("ViewPort ent header: ")DRW_dbg::dbg("ViewPort ent header: "); DRW_DBGHL(someHdl.code, someHdl.size, someHdl.ref)DRW_dbg::dbgHL(someHdl.code, someHdl.size, someHdl.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      }
      someHdl = buf->getHandle();
      DRW_DBG("Named ucs handle: ")DRW_dbg::dbg("Named ucs handle: "); DRW_DBGHL(someHdl.code, someHdl.size, someHdl.ref)DRW_dbg::dbgHL(someHdl.code, someHdl.size, someHdl.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      DRW_DBG("\n Remaining bytes: ")DRW_dbg::dbg("\n Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
      someHdl = buf->getHandle();
      DRW_DBG("base ucs handle: ")DRW_dbg::dbg("base ucs handle: "); DRW_DBGHL(someHdl.code, someHdl.size, someHdl.ref)DRW_dbg::dbgHL(someHdl.code, someHdl.size, someHdl.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
  }
  if (version > DRW::AC1018) {//2007+
      someHdl = buf->getHandle();
      DRW_DBG("background handle: ")DRW_dbg::dbg("background handle: "); DRW_DBGHL(someHdl.code, someHdl.size, someHdl.ref)DRW_dbg::dbgHL(someHdl.code, someHdl.size, someHdl.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      someHdl = buf->getHandle();
      DRW_DBG("visual style handle: ")DRW_dbg::dbg("visual style handle: "); DRW_DBGHL(someHdl.code, someHdl.size, someHdl.ref)DRW_dbg::dbgHL(someHdl.code, someHdl.size, someHdl.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
      someHdl = buf->getHandle();
      DRW_DBG("shadeplot ID handle: ")DRW_dbg::dbg("shadeplot ID handle: "); DRW_DBGHL(someHdl.code, someHdl.size, someHdl.ref)DRW_dbg::dbgHL(someHdl.code, someHdl.size, someHdl.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
       DRW_DBG("\n Remaining bytes: ")DRW_dbg::dbg("\n Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");
       someHdl = buf->getHandle();
       m_sunHandle = someHdl.ref;
       DRW_DBG("SUN handle: ")DRW_dbg::dbg("SUN handle: "); DRW_DBGHL(someHdl.code, someHdl.size, someHdl.ref)DRW_dbg::dbgHL(someHdl.code, someHdl.size, someHdl.ref); DRW_DBG("\n")DRW_dbg::dbg("\n");
   }
  DRW_DBG("\n Remaining bytes: ")DRW_dbg::dbg("\n Remaining bytes: "); DRW_DBG(buf->numRemainingBytes())DRW_dbg::dbg(buf->numRemainingBytes()); DRW_DBG("\n")DRW_dbg::dbg("\n");

  if (!ret)
      return ret;
  return buf->isGood();
9691}

9693// ---------------------------------------------------------------------------
9694// Write helpers shared by the new encoders below.
9695// ---------------------------------------------------------------------------

9697namespace {
9698// Write an absolute hard-pointer handle (code=5, ref=ref) or null handle
9699// (code=3, ref=0) depending on whether ref is non-zero.
9700static void putAbsHandle(dwgBufferW *hb, std::uint32_t ref) {
  dwgHandle h;
  h.code = (ref != 0) ? 5 : 3;
  h.ref  = ref;
  h.size = 0;
  if (h.ref != 0) {
      std::uint32_t t = h.ref;
      while (t != 0) { t >>= 8; ++h.size; }
  }
  hb->putHandle(h);
9710}
9711} // namespace

9713// ---------------------------------------------------------------------------
9714// DRW_MLine::encodeDwg — OT=47 (AC1015/AC1018/AC1024)
9715// ---------------------------------------------------------------------------

9717bool DRW_MLine::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                         dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 47;
  if (!encodeDwgCommon(version, buf)) return false;

  buf->putBitDouble(scale);
  buf->putRawChar8(justification);
  buf->put3BitDouble(basePoint);
  buf->putExtrusion(extPoint, false);  // false = pre-2000 style (getExtrusion(false) in parser)
  buf->putBitShort(static_cast<std::uint16_t>(openClosed));
  buf->putRawChar8(numLines);
  buf->putBitShort(numVerts);

  for (const auto& vtx : vertlist) {
      buf->put3BitDouble(vtx.position);
      buf->put3BitDouble(vtx.vertexDir);
      buf->put3BitDouble(vtx.miterDir);
      for (int li = 0; li < static_cast<int>(numLines); ++li) {
          const auto& segs  = (li < static_cast<int>(vtx.segParms.size()))
                                  ? vtx.segParms[li]      : std::vector<double>{};
          const auto& fills = (li < static_cast<int>(vtx.areaFillParms.size()))
                                  ? vtx.areaFillParms[li] : std::vector<double>{};
          buf->putBitShort(static_cast<std::uint16_t>(segs.size()));
          for (double s : segs)  buf->putBitDouble(s);
          buf->putBitShort(static_cast<std::uint16_t>(fills.size()));
          for (double f : fills) buf->putBitDouble(f);
      }
  }

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  // MLINE style handle — extra handle after standard entity handles.
  if (version > DRW::AC1014) {
      dwgBufferW *hb = (handleBuf != nullptr) ? handleBuf : buf;
      putAbsHandle(hb, styleHandle);
  }
  return true;
9755}

9757// ---------------------------------------------------------------------------
9758// DRW_Vertex::encodeDwg — OT varies by flags
9759// ---------------------------------------------------------------------------

9761bool DRW_Vertex::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                           dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  switch (m_dwgSubtype) {
  case DwgSubtype::Vertex2D:     oType = 0x0A; break;
  case DwgSubtype::Vertex3D:     oType = 0x0B; break;
  case DwgSubtype::Mesh:         oType = 0x0C; break;
  case DwgSubtype::Polyface:     oType = 0x0D; break;
  case DwgSubtype::PolyfaceFace: oType = 0x0E; break;
  case DwgSubtype::Auto:
      if ((flags & 64) != 0)
          oType = 0x0D;  // VERTEX_PFACE coordinate vertex
      else if ((flags & 128) != 0)
          oType = 0x0E;  // VERTEX_PFACE_FACE
      else if ((flags & 16) != 0)
          oType = 0x0C;  // VERTEX_MESH
      else if ((flags & 32) != 0 || (flags & 8) != 0)
          oType = 0x0B;  // VERTEX_3D
      else
          oType = 0x0A;  // VERTEX_2D
      break;
  }

  if (!encodeDwgCommon(version, buf)) return false;

  if (oType == 0x0A) {
      buf->putRawChar8(static_cast<std::uint8_t>(flags));
      buf->put3BitDouble(basePoint);
      buf->putBitDouble(stawidth);
      buf->putBitDouble(endwidth);
      buf->putBitDouble(bulge);
      if (version > DRW::AC1021)
          buf->putBitLong(static_cast<std::int32_t>(identifier));
      buf->putBitDouble(tgdir);
  } else if (oType == 0x0B || oType == 0x0C || oType == 0x0D) {
      buf->putRawChar8(static_cast<std::uint8_t>(flags));
      buf->put3BitDouble(basePoint);
  } else {  // 0x0E pface face
      buf->putBitShort(static_cast<std::uint16_t>(vindex1));
      buf->putBitShort(static_cast<std::uint16_t>(vindex2));
      buf->putBitShort(static_cast<std::uint16_t>(vindex3));
      buf->putBitShort(static_cast<std::uint16_t>(vindex4));
  }

  return encodeDwgEntHandle(version, buf, handleBuf);
9806}

9808bool DRW_SeqEnd::parseDwg(DRW::Version version, dwgBuffer *buf, std::uint32_t bs) {
  if (!DRW_Entity::parseDwg(version, buf, nullptr, bs))
      return false;
  return DRW_Entity::parseDwgEntHandle(version, buf);
9812}

9814bool DRW_SeqEnd::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                         dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 0x06;
  if (!encodeDwgCommon(version, buf))
      return false;
  return encodeDwgEntHandle(version, buf, handleBuf);
9821}

9823// ---------------------------------------------------------------------------
9824// DRW_Polyline::encodeDwg — OT varies by flags; vertex handles emitted here.
9825// ---------------------------------------------------------------------------

9827bool DRW_Polyline::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                             dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  // Determine object type from stored flags (mirror of parseDwg dispatch).
  if (flags & 64)       oType = 0x1D;  // POLYLINE_PFACE
  else if (flags & 16)  oType = 0x1E;  // POLYLINE_MESH
  else if (flags & 8)   oType = 0x10;  // POLYLINE_3D
  else                  oType = 0x0F;  // POLYLINE_2D

  if (!encodeDwgCommon(version, buf)) return false;

  if (oType == 0x0F) {
      buf->putBitShort(static_cast<std::uint16_t>(flags));
      buf->putBitShort(static_cast<std::uint16_t>(curvetype));
      buf->putBitDouble(defstawidth);
      buf->putBitDouble(defendwidth);
      buf->putThickness(thickness, version > DRW::AC1014);
      buf->putBitDouble(basePoint.z);
      buf->putExtrusion(extPoint, version > DRW::AC1014);
  } else if (oType == 0x10) {
      // curvetype → 2 RC flag bytes (mirror of parser decode)
      std::uint8_t rc1 = 0;
      if      (curvetype == 5) rc1 = 1;
      else if (curvetype == 6) rc1 = 2;
      else if (curvetype == 8) rc1 = 3;
      buf->putRawChar8(rc1);
      buf->putRawChar8(static_cast<std::uint8_t>(flags & 1));  // bit 0 = closed
  } else if (oType == 0x1D) {
      buf->putBitShort(static_cast<std::uint16_t>(vertexcount));
      buf->putBitShort(static_cast<std::uint16_t>(facecount));
  } else {  // 0x1E MESH
      buf->putBitShort(static_cast<std::uint16_t>(flags & ~16));  // strip reader-added bit 4
      buf->putBitShort(static_cast<std::uint16_t>(curvetype));
      buf->putBitShort(static_cast<std::uint16_t>(vertexcount));  // M count
      buf->putBitShort(static_cast<std::uint16_t>(facecount));    // N count
      buf->putBitShort(static_cast<std::uint16_t>(smoothM));      // mDensity, DXF 73
      buf->putBitShort(static_cast<std::uint16_t>(smoothN));      // nDensity, DXF 74
  }

  // AC2004+ (>AC1015): emit vertex count before the handle section.
  std::int32_t ooCount = static_cast<std::int32_t>(vertlist.size());
  if (version > DRW::AC1015)
      buf->putBitLong(ooCount);

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  dwgBufferW *hb = (handleBuf != nullptr) ? handleBuf : buf;

  if (version < DRW::AC1018) {
      // R2000-: first/last vertex handles (absolute hard pointers).
      putAbsHandle(hb, vertlist.empty() ? 0u : vertlist.front()->handle);
      putAbsHandle(hb, vertlist.empty() ? 0u : vertlist.back()->handle);
  } else {
      // R2004+: one handle per vertex.
      for (const auto& v : vertlist)
          putAbsHandle(hb, v ? v->handle : 0u);
  }
  putAbsHandle(hb, seqEndH.ref);

  return true;
9887}

9889// ---------------------------------------------------------------------------
9890// DRW_Leader::encodeDwg — OT=45 (AC1015/AC1018/AC1024)
9891// ---------------------------------------------------------------------------

9893bool DRW_Leader::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                           dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs; (void)strBuf;
  oType = 45;
  if (!encodeDwgCommon(version, buf)) return false;

  buf->putBit(0);                                              // unknown bit
  buf->putBitShort(0);                                         // annotType (ignored on read)
  buf->putBitShort(static_cast<std::int16_t>(leadertype));           // pathType (DXF code 72)
  buf->putBitLong(static_cast<std::int32_t>(vertexlist.size()));
  for (const auto& vp : vertexlist)
      buf->put3BitDouble(*vp);
  buf->put3BitDouble(DRW_Coord(0, 0, 0));                     // Endptproj (ignored on read)
  // ODA §20.4.47: Extrusion is plain 3DPOINT (3BD), not BE — matches parseDwg.
  buf->put3BitDouble(extrusionPoint);

  buf->put3BitDouble(horizdir);
  buf->put3BitDouble(offsetblock);

  if (version > DRW::AC1012)
      buf->put3BitDouble(DRW_Coord(0, 0, 0));                 // unknown coord

  if (version < DRW::AC1015)
      buf->putBitDouble(0.0);                                  // dimgap (pre-R2000)

  if (version < DRW::AC1024) {
      buf->putBitDouble(textheight);
      buf->putBitDouble(textwidth);
  }

  buf->putBit(static_cast<std::uint8_t>(hookline));
  buf->putBit(static_cast<std::uint8_t>(arrow));

  if (version < DRW::AC1015) {
      buf->putBitShort(0);    // arrowHeadType
      buf->putBitDouble(0.0); // dimasz
      buf->putBit(0);         // unk
      buf->putBit(0);         // unk
      buf->putBitShort(0);    // unk short
      buf->putBitShort(0);    // byBlock color
      buf->putBit(0);         // unk
      buf->putBit(0);         // unk
  } else {
      buf->putBitShort(0);    // unk short (R2000+)
      buf->putBit(0);         // unk
      buf->putBit(0);         // unk
  }

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  dwgBufferW *hb = (handleBuf != nullptr) ? handleBuf : buf;
  putAbsHandle(hb, 0);       // AnnotH — null (no annotation entity)
  putAbsHandle(hb, 0x15);    // dimStyleH — hard ptr to STANDARD (handle 0x15)

  return true;
9948}

9950// ---------------------------------------------------------------------------
9951// DRW_Viewport::encodeDwg — OT=34 (AC1015/AC1018/AC1024)
9952// ---------------------------------------------------------------------------

9954bool DRW_Viewport::encodeDwg(DRW::Version version, dwgBufferW *buf, std::uint32_t bs,
                             dwgBufferW *strBuf, dwgBufferW *handleBuf) {
  (void)bs;
  oType = 34;
  // Use strBuf for TV strings in AC1024; for AC1015/AC1018 strings go inline.
  dwgBufferW *sb = (strBuf && version > DRW::AC1018) ? strBuf : buf;
  if (!encodeDwgCommon(version, buf)) return false;

  buf->putBitDouble(basePoint.x);
  buf->putBitDouble(basePoint.y);
  buf->putBitDouble(basePoint.z);
  buf->putBitDouble(pswidth);
  buf->putBitDouble(psheight);

  if (version > DRW::AC1014) {
      buf->putBitDouble(viewTarget.x);
      buf->putBitDouble(viewTarget.y);
      buf->putBitDouble(viewTarget.z);
      buf->putBitDouble(viewDir.x);
      buf->putBitDouble(viewDir.y);
      buf->putBitDouble(viewDir.z);
      buf->putBitDouble(twistAngle);
      buf->putBitDouble(viewHeight);
      buf->putBitDouble(viewLength);    // lens length
      buf->putBitDouble(frontClip);
      buf->putBitDouble(backClip);
      buf->putBitDouble(snapAngle);
      buf->putRawDouble(centerPX);
      buf->putRawDouble(centerPY);
      buf->putRawDouble(snapPX);
      buf->putRawDouble(snapPY);
      buf->putRawDouble(snapSpPX);
      buf->putRawDouble(snapSpPY);
      buf->putRawDouble(0.0);   // gridSpacingX
      buf->putRawDouble(0.0);   // gridSpacingY
      buf->putBitShort(0);      // circleZoom
  }

  if (version > DRW::AC1018)
      buf->putBitShort(0);      // gridMajor (AC2007+)

  if (version > DRW::AC1014) {
      buf->putBitLong(0);       // frozenLyCount
      buf->putBitLong(0);       // statusFlags
      sb->putVariableText(version, "");  // styleSheet TV
      buf->putRawChar8(0);      // renderMode
      buf->putBit(0);           // ucsPerVP
      buf->putBit(0);           // ucs flag
      // UCS origin / X-axis / Y-axis (3×3BD), elevation, ortho type
      for (int i = 0; i < 9; ++i) buf->putBitDouble(0.0);
      buf->putBitDouble(0.0);   // ucsElev
      buf->putBitShort(0);      // ucsOrthoType
  }

  if (version > DRW::AC1015)
      buf->putBitShort(0);      // shadePlotMode (AC2004+)

  if (version > DRW::AC1018) {
      buf->putBit(0);           // useDefLight
      buf->putRawChar8(0);      // defLightType
      buf->putBitDouble(0.0);   // brightness
      buf->putBitDouble(0.0);   // contrast
      buf->putCmColor(version, 256);  // ambientColor CMC (ByLayer) per ODA §20.4.38
  }

  if (!encodeDwgEntHandle(version, buf, handleBuf)) return false;

  dwgBufferW *hb = (handleBuf != nullptr) ? handleBuf : buf;

  if (version < DRW::AC1015) {
      putAbsHandle(hb, 0);    // viewport entity header (pre-2000)
  }
  if (version > DRW::AC1014) {
      // frozenLyCount=0, so no frozen layer handles.
      putAbsHandle(hb, 0);    // clip boundary (null)
      if (version == DRW::AC1015)
          putAbsHandle(hb, 0);  // viewport entity header (R2000 only)
      putAbsHandle(hb, 0);    // namedUCS (null)
      putAbsHandle(hb, 0);    // baseUCS (null)
  }
  if (version > DRW::AC1018) {
      putAbsHandle(hb, 0);    // background (null)
      putAbsHandle(hb, 0);    // visualStyle (null)
      putAbsHandle(hb, 0);    // shadeplotID (null)
      putAbsHandle(hb, 0);    // sun (null)
  }

  return true;
10042}