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0cdf8a076155c28a1dbb2354ba485d5418f4bd63
create/src/Mod/Import/App/dxf/dxf.cpp
luzpaz e9f9e441fc Fix typos
2023-12-22 13:35:23 +00:00

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// dxf.cpp
// Copyright (c) 2009, Dan Heeks
// This program is released under the BSD license. See the file COPYING for details.
// modified 2018 wandererfan
#include "PreCompiled.h"
// required by windows for M_PI definition
#define _USE_MATH_DEFINES
#include <cmath>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <sstream>
#include "dxf.h"
#include <App/Application.h>
#include <App/Color.h>
#include <Base/Console.h>
#include <Base/FileInfo.h>
#include <Base/Interpreter.h>
#include <Base/Stream.h>
#include <Base/Vector3D.h>
using namespace std;
Base::Vector3d toVector3d(const double* a)
{
Base::Vector3d result;
result.x = a[0];
result.y = a[1];
result.z = a[2];
return result;
}
CDxfWrite::CDxfWrite(const char* filepath)
: // TODO: these should probably be parameters in config file
// handles:
// boilerplate 0 - A00
// used by dxf.cpp A01 - FFFE
// ACAD HANDSEED FFFF
m_handle(0xA00)
, // room for 2560 handles in boilerplate files
// m_entityHandle(0x300), //don't need special ranges for handles
// m_layerHandle(0x30),
// m_blockHandle(0x210),
// m_blkRecordHandle(0x110),
m_polyOverride(false)
, m_layerName("none")
{
// start the file
m_fail = false;
m_version = 12;
Base::FileInfo fi(filepath);
m_ofs = new Base::ofstream(fi, ios::out);
m_ssBlock = new std::ostringstream();
m_ssBlkRecord = new std::ostringstream();
m_ssEntity = new std::ostringstream();
m_ssLayer = new std::ostringstream();
if (!(*m_ofs)) {
m_fail = true;
return;
}
m_ofs->imbue(std::locale("C"));
}
CDxfWrite::~CDxfWrite()
{
delete m_ofs;
delete m_ssBlock;
delete m_ssBlkRecord;
delete m_ssEntity;
delete m_ssLayer;
}
void CDxfWrite::init()
{
writeHeaderSection();
makeBlockRecordTableHead();
makeBlockSectionHead();
}
//! assemble pieces into output file
void CDxfWrite::endRun()
{
makeLayerTable();
makeBlockRecordTableBody();
writeClassesSection();
writeTablesSection();
writeBlocksSection();
writeEntitiesSection();
writeObjectsSection();
(*m_ofs) << " 0" << endl;
(*m_ofs) << "EOF";
}
//***************************
// writeHeaderSection
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeHeaderSection()
{
std::stringstream ss;
ss << "FreeCAD v" << App::Application::Config()["BuildVersionMajor"] << "."
<< App::Application::Config()["BuildVersionMinor"] << " "
<< App::Application::Config()["BuildRevision"];
// header & version
(*m_ofs) << "999" << endl;
(*m_ofs) << ss.str() << endl;
// static header content
ss.str("");
ss.clear();
ss << "header" << m_version << ".rub";
std::string fileSpec = m_dataDir + ss.str();
(*m_ofs) << getPlateFile(fileSpec);
}
//***************************
// writeClassesSection
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeClassesSection()
{
if (m_version < 14) {
return;
}
// static classes section content
std::stringstream ss;
ss << "classes" << m_version << ".rub";
std::string fileSpec = m_dataDir + ss.str();
(*m_ofs) << getPlateFile(fileSpec);
}
//***************************
// writeTablesSection
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeTablesSection()
{
// static tables section head end content
std::stringstream ss;
ss << "tables1" << m_version << ".rub";
std::string fileSpec = m_dataDir + ss.str();
(*m_ofs) << getPlateFile(fileSpec);
(*m_ofs) << (*m_ssLayer).str();
// static tables section tail end content
ss.str("");
ss.clear();
ss << "tables2" << m_version << ".rub";
fileSpec = m_dataDir + ss.str();
(*m_ofs) << getPlateFile(fileSpec);
if (m_version > 12) {
(*m_ofs) << (*m_ssBlkRecord).str();
(*m_ofs) << " 0" << endl;
(*m_ofs) << "ENDTAB" << endl;
}
(*m_ofs) << " 0" << endl;
(*m_ofs) << "ENDSEC" << endl;
}
//***************************
// makeLayerTable
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::makeLayerTable()
{
std::string tablehash = getLayerHandle();
(*m_ssLayer) << " 0" << endl;
(*m_ssLayer) << "TABLE" << endl;
(*m_ssLayer) << " 2" << endl;
(*m_ssLayer) << "LAYER" << endl;
(*m_ssLayer) << " 5" << endl;
(*m_ssLayer) << tablehash << endl;
if (m_version > 12) {
(*m_ssLayer) << "330" << endl;
(*m_ssLayer) << 0 << endl;
(*m_ssLayer) << "100" << endl;
(*m_ssLayer) << "AcDbSymbolTable" << endl;
}
(*m_ssLayer) << " 70" << endl;
(*m_ssLayer) << m_layerList.size() + 1 << endl;
(*m_ssLayer) << " 0" << endl;
(*m_ssLayer) << "LAYER" << endl;
(*m_ssLayer) << " 5" << endl;
(*m_ssLayer) << getLayerHandle() << endl;
if (m_version > 12) {
(*m_ssLayer) << "330" << endl;
(*m_ssLayer) << tablehash << endl;
(*m_ssLayer) << "100" << endl;
(*m_ssLayer) << "AcDbSymbolTableRecord" << endl;
(*m_ssLayer) << "100" << endl;
(*m_ssLayer) << "AcDbLayerTableRecord" << endl;
}
(*m_ssLayer) << " 2" << endl;
(*m_ssLayer) << "0" << endl;
(*m_ssLayer) << " 70" << endl;
(*m_ssLayer) << " 0" << endl;
(*m_ssLayer) << " 62" << endl;
(*m_ssLayer) << " 7" << endl;
(*m_ssLayer) << " 6" << endl;
(*m_ssLayer) << "CONTINUOUS" << endl;
for (auto& l : m_layerList) {
(*m_ssLayer) << " 0" << endl;
(*m_ssLayer) << "LAYER" << endl;
(*m_ssLayer) << " 5" << endl;
(*m_ssLayer) << getLayerHandle() << endl;
if (m_version > 12) {
(*m_ssLayer) << "330" << endl;
(*m_ssLayer) << tablehash << endl;
(*m_ssLayer) << "100" << endl;
(*m_ssLayer) << "AcDbSymbolTableRecord" << endl;
(*m_ssLayer) << "100" << endl;
(*m_ssLayer) << "AcDbLayerTableRecord" << endl;
}
(*m_ssLayer) << " 2" << endl;
(*m_ssLayer) << l << endl;
(*m_ssLayer) << " 70" << endl;
(*m_ssLayer) << " 0" << endl;
(*m_ssLayer) << " 62" << endl;
(*m_ssLayer) << " 7" << endl;
(*m_ssLayer) << " 6" << endl;
(*m_ssLayer) << "CONTINUOUS" << endl;
}
(*m_ssLayer) << " 0" << endl;
(*m_ssLayer) << "ENDTAB" << endl;
}
//***************************
// makeBlockRecordTableHead
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::makeBlockRecordTableHead()
{
if (m_version < 14) {
return;
}
std::string tablehash = getBlkRecordHandle();
m_saveBlockRecordTableHandle = tablehash;
(*m_ssBlkRecord) << " 0" << endl;
(*m_ssBlkRecord) << "TABLE" << endl;
(*m_ssBlkRecord) << " 2" << endl;
(*m_ssBlkRecord) << "BLOCK_RECORD" << endl;
(*m_ssBlkRecord) << " 5" << endl;
(*m_ssBlkRecord) << tablehash << endl;
(*m_ssBlkRecord) << "330" << endl;
(*m_ssBlkRecord) << "0" << endl;
(*m_ssBlkRecord) << "100" << endl;
(*m_ssBlkRecord) << "AcDbSymbolTable" << endl;
(*m_ssBlkRecord) << " 70" << endl;
(*m_ssBlkRecord) << (m_blockList.size() + 5) << endl;
m_saveModelSpaceHandle = getBlkRecordHandle();
(*m_ssBlkRecord) << " 0" << endl;
(*m_ssBlkRecord) << "BLOCK_RECORD" << endl;
(*m_ssBlkRecord) << " 5" << endl;
(*m_ssBlkRecord) << m_saveModelSpaceHandle << endl;
(*m_ssBlkRecord) << "330" << endl;
(*m_ssBlkRecord) << tablehash << endl;
(*m_ssBlkRecord) << "100" << endl;
(*m_ssBlkRecord) << "AcDbSymbolTableRecord" << endl;
(*m_ssBlkRecord) << "100" << endl;
(*m_ssBlkRecord) << "AcDbBlockTableRecord" << endl;
(*m_ssBlkRecord) << " 2" << endl;
(*m_ssBlkRecord) << "*MODEL_SPACE" << endl;
// (*m_ssBlkRecord) << " 1" << endl;
// (*m_ssBlkRecord) << " " << endl;
m_savePaperSpaceHandle = getBlkRecordHandle();
(*m_ssBlkRecord) << " 0" << endl;
(*m_ssBlkRecord) << "BLOCK_RECORD" << endl;
(*m_ssBlkRecord) << " 5" << endl;
(*m_ssBlkRecord) << m_savePaperSpaceHandle << endl;
(*m_ssBlkRecord) << "330" << endl;
(*m_ssBlkRecord) << tablehash << endl;
(*m_ssBlkRecord) << "100" << endl;
(*m_ssBlkRecord) << "AcDbSymbolTableRecord" << endl;
(*m_ssBlkRecord) << "100" << endl;
(*m_ssBlkRecord) << "AcDbBlockTableRecord" << endl;
(*m_ssBlkRecord) << " 2" << endl;
(*m_ssBlkRecord) << "*PAPER_SPACE" << endl;
// (*m_ssBlkRecord) << " 1" << endl;
// (*m_ssBlkRecord) << " " << endl;
}
//***************************
// makeBlockRecordTableBody
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::makeBlockRecordTableBody()
{
if (m_version < 14) {
return;
}
int iBlkRecord = 0;
for (auto& b : m_blockList) {
(*m_ssBlkRecord) << " 0" << endl;
(*m_ssBlkRecord) << "BLOCK_RECORD" << endl;
(*m_ssBlkRecord) << " 5" << endl;
(*m_ssBlkRecord) << m_blkRecordList.at(iBlkRecord) << endl;
(*m_ssBlkRecord) << "330" << endl;
(*m_ssBlkRecord) << m_saveBlockRecordTableHandle << endl;
(*m_ssBlkRecord) << "100" << endl;
(*m_ssBlkRecord) << "AcDbSymbolTableRecord" << endl;
(*m_ssBlkRecord) << "100" << endl;
(*m_ssBlkRecord) << "AcDbBlockTableRecord" << endl;
(*m_ssBlkRecord) << " 2" << endl;
(*m_ssBlkRecord) << b << endl;
// (*m_ssBlkRecord) << " 70" << endl;
// (*m_ssBlkRecord) << " 0" << endl;
iBlkRecord++;
}
}
//***************************
// makeBlockSectionHead
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::makeBlockSectionHead()
{
(*m_ssBlock) << " 0" << endl;
(*m_ssBlock) << "SECTION" << endl;
(*m_ssBlock) << " 2" << endl;
(*m_ssBlock) << "BLOCKS" << endl;
(*m_ssBlock) << " 0" << endl;
(*m_ssBlock) << "BLOCK" << endl;
(*m_ssBlock) << " 5" << endl;
m_currentBlock = getBlockHandle();
(*m_ssBlock) << m_currentBlock << endl;
if (m_version > 12) {
(*m_ssBlock) << "330" << endl;
(*m_ssBlock) << m_saveModelSpaceHandle << endl;
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbEntity" << endl;
}
(*m_ssBlock) << " 8" << endl;
(*m_ssBlock) << "0" << endl;
if (m_version > 12) {
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbBlockBegin" << endl;
}
(*m_ssBlock) << " 2" << endl;
(*m_ssBlock) << "*MODEL_SPACE" << endl;
(*m_ssBlock) << " 70" << endl;
(*m_ssBlock) << " 0" << endl;
(*m_ssBlock) << " 10" << endl;
(*m_ssBlock) << 0.0 << endl;
(*m_ssBlock) << " 20" << endl;
(*m_ssBlock) << 0.0 << endl;
(*m_ssBlock) << " 30" << endl;
(*m_ssBlock) << 0.0 << endl;
(*m_ssBlock) << " 3" << endl;
(*m_ssBlock) << "*MODEL_SPACE" << endl;
(*m_ssBlock) << " 1" << endl;
(*m_ssBlock) << " " << endl;
(*m_ssBlock) << " 0" << endl;
(*m_ssBlock) << "ENDBLK" << endl;
(*m_ssBlock) << " 5" << endl;
(*m_ssBlock) << getBlockHandle() << endl;
if (m_version > 12) {
(*m_ssBlock) << "330" << endl;
(*m_ssBlock) << m_saveModelSpaceHandle << endl;
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbEntity" << endl;
}
(*m_ssBlock) << " 8" << endl;
(*m_ssBlock) << "0" << endl;
if (m_version > 12) {
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbBlockEnd" << endl;
}
(*m_ssBlock) << " 0" << endl;
(*m_ssBlock) << "BLOCK" << endl;
(*m_ssBlock) << " 5" << endl;
m_currentBlock = getBlockHandle();
(*m_ssBlock) << m_currentBlock << endl;
if (m_version > 12) {
(*m_ssBlock) << "330" << endl;
(*m_ssBlock) << m_savePaperSpaceHandle << endl;
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbEntity" << endl;
(*m_ssBlock) << " 67" << endl;
(*m_ssBlock) << "1" << endl;
}
(*m_ssBlock) << " 8" << endl;
(*m_ssBlock) << "0" << endl;
if (m_version > 12) {
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbBlockBegin" << endl;
}
(*m_ssBlock) << " 2" << endl;
(*m_ssBlock) << "*PAPER_SPACE" << endl;
(*m_ssBlock) << " 70" << endl;
(*m_ssBlock) << " 0" << endl;
(*m_ssBlock) << " 10" << endl;
(*m_ssBlock) << 0.0 << endl;
(*m_ssBlock) << " 20" << endl;
(*m_ssBlock) << 0.0 << endl;
(*m_ssBlock) << " 30" << endl;
(*m_ssBlock) << 0.0 << endl;
(*m_ssBlock) << " 3" << endl;
(*m_ssBlock) << "*PAPER_SPACE" << endl;
(*m_ssBlock) << " 1" << endl;
(*m_ssBlock) << " " << endl;
(*m_ssBlock) << " 0" << endl;
(*m_ssBlock) << "ENDBLK" << endl;
(*m_ssBlock) << " 5" << endl;
(*m_ssBlock) << getBlockHandle() << endl;
if (m_version > 12) {
(*m_ssBlock) << "330" << endl;
(*m_ssBlock) << m_savePaperSpaceHandle << endl;
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbEntity" << endl;
(*m_ssBlock) << " 67" << endl; // paper_space flag
(*m_ssBlock) << " 1" << endl;
}
(*m_ssBlock) << " 8" << endl;
(*m_ssBlock) << "0" << endl;
if (m_version > 12) {
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbBlockEnd" << endl;
}
}
std::string CDxfWrite::getPlateFile(std::string fileSpec)
{
std::stringstream outString;
Base::FileInfo fi(fileSpec);
if (!fi.isReadable()) {
Base::Console().Message("dxf unable to open %s!\n", fileSpec.c_str());
}
else {
string line;
ifstream inFile(fi.filePath().c_str());
while (!inFile.eof()) {
getline(inFile, line);
if (!inFile.eof()) {
outString << line << '\n';
}
}
}
return outString.str();
}
std::string CDxfWrite::getHandle()
{
m_handle++;
std::stringstream ss;
ss << std::uppercase << std::hex << std::setfill('0') << std::setw(2);
ss << m_handle;
return ss.str();
}
std::string CDxfWrite::getEntityHandle()
{
return getHandle();
// m_entityHandle++;
// std::stringstream ss;
// ss << std::uppercase << std::hex << std::setfill('0') << std::setw(2);
// ss << m_entityHandle;
// return ss.str();
}
std::string CDxfWrite::getLayerHandle()
{
return getHandle();
// m_layerHandle++;
// std::stringstream ss;
// ss << std::uppercase << std::hex << std::setfill('0') << std::setw(2);
// ss << m_layerHandle;
// return ss.str();
}
std::string CDxfWrite::getBlockHandle()
{
return getHandle();
// m_blockHandle++;
// std::stringstream ss;
// ss << std::uppercase << std::hex << std::setfill('0') << std::setw(2);
// ss << m_blockHandle;
// return ss.str();
}
std::string CDxfWrite::getBlkRecordHandle()
{
return getHandle();
// m_blkRecordHandle++;
// std::stringstream ss;
// ss << std::uppercase << std::hex << std::setfill('0') << std::setw(2);
// ss << m_blkRecordHandle;
// return ss.str();
}
void CDxfWrite::addBlockName(std::string b, std::string h)
{
m_blockList.push_back(b);
m_blkRecordList.push_back(h);
}
void CDxfWrite::setLayerName(std::string s)
{
m_layerName = s;
m_layerList.push_back(s);
}
void CDxfWrite::writeLine(const double* s, const double* e)
{
putLine(toVector3d(s), toVector3d(e), m_ssEntity, getEntityHandle(), m_saveModelSpaceHandle);
}
void CDxfWrite::putLine(const Base::Vector3d s,
const Base::Vector3d e,
std::ostringstream* outStream,
const std::string handle,
const std::string ownerHandle)
{
(*outStream) << " 0" << endl;
(*outStream) << "LINE" << endl;
(*outStream) << " 5" << endl;
(*outStream) << handle << endl;
if (m_version > 12) {
(*outStream) << "330" << endl;
(*outStream) << ownerHandle << endl;
(*outStream) << "100" << endl;
(*outStream) << "AcDbEntity" << endl;
}
(*outStream) << " 8" << endl; // Group code for layer name
(*outStream) << getLayerName() << endl; // Layer number
if (m_version > 12) {
(*outStream) << "100" << endl;
(*outStream) << "AcDbLine" << endl;
}
(*outStream) << " 10" << endl; // Start point of line
(*outStream) << s.x << endl; // X in WCS coordinates
(*outStream) << " 20" << endl;
(*outStream) << s.y << endl; // Y in WCS coordinates
(*outStream) << " 30" << endl;
(*outStream) << s.z << endl; // Z in WCS coordinates
(*outStream) << " 11" << endl; // End point of line
(*outStream) << e.x << endl; // X in WCS coordinates
(*outStream) << " 21" << endl;
(*outStream) << e.y << endl; // Y in WCS coordinates
(*outStream) << " 31" << endl;
(*outStream) << e.z << endl; // Z in WCS coordinates
}
//***************************
// writeLWPolyLine (Note: LWPolyline might not be supported in R12
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeLWPolyLine(const LWPolyDataOut& pd)
{
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "LWPOLYLINE" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
if (m_version > 12) {
(*m_ssEntity) << "100" << endl; // 100 groups are not part of R12
(*m_ssEntity) << "AcDbPolyline" << endl;
}
(*m_ssEntity) << " 8" << endl; // Group code for layer name
(*m_ssEntity) << getLayerName() << endl; // Layer name
(*m_ssEntity) << " 90" << endl;
(*m_ssEntity) << pd.nVert << endl; // number of vertices
(*m_ssEntity) << " 70" << endl;
(*m_ssEntity) << pd.Flag << endl;
(*m_ssEntity) << " 43" << endl;
(*m_ssEntity) << "0" << endl; // Constant width opt
// (*m_ssEntity) << pd.Width << endl; //Constant width opt
// (*m_ssEntity) << " 38" << endl;
// (*m_ssEntity) << pd.Elev << endl; // Elevation
// (*m_ssEntity) << " 39" << endl;
// (*m_ssEntity) << pd.Thick << endl; // Thickness
for (auto& p : pd.Verts) {
(*m_ssEntity) << " 10" << endl; // Vertices
(*m_ssEntity) << p.x << endl;
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << p.y << endl;
}
for (auto& s : pd.StartWidth) {
(*m_ssEntity) << " 40" << endl;
(*m_ssEntity) << s << endl; // Start Width
}
for (auto& e : pd.EndWidth) {
(*m_ssEntity) << " 41" << endl;
(*m_ssEntity) << e << endl; // End Width
}
for (auto& b : pd.Bulge) { // Bulge
(*m_ssEntity) << " 42" << endl;
(*m_ssEntity) << b << endl;
}
// (*m_ssEntity) << "210" << endl; //Extrusion dir
// (*m_ssEntity) << pd.Extr.x << endl;
// (*m_ssEntity) << "220" << endl;
// (*m_ssEntity) << pd.Extr.y << endl;
// (*m_ssEntity) << "230" << endl;
// (*m_ssEntity) << pd.Extr.z << endl;
}
//***************************
// writePolyline
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writePolyline(const LWPolyDataOut& pd)
{
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "POLYLINE" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl;
(*m_ssEntity) << getLayerName() << endl; // Layer name
if (m_version > 12) {
(*m_ssEntity) << "100" << endl; // 100 groups are not part of R12
(*m_ssEntity) << "AcDbPolyline" << endl;
}
(*m_ssEntity) << " 66" << endl;
(*m_ssEntity) << " 1" << endl; // vertices follow
(*m_ssEntity) << " 10" << endl;
(*m_ssEntity) << "0.0" << endl;
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << "0.0" << endl;
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << "0.0" << endl;
(*m_ssEntity) << " 70" << endl;
(*m_ssEntity) << "0" << endl;
for (auto& p : pd.Verts) {
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "VERTEX" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
(*m_ssEntity) << " 8" << endl;
(*m_ssEntity) << getLayerName() << endl;
(*m_ssEntity) << " 10" << endl;
(*m_ssEntity) << p.x << endl;
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << p.y << endl;
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << "0.0" << endl;
}
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "SEQEND" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
(*m_ssEntity) << " 8" << endl;
(*m_ssEntity) << getLayerName() << endl;
}
void CDxfWrite::writePoint(const double* s)
{
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "POINT" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl; // Group code for layer name
(*m_ssEntity) << getLayerName() << endl; // Layer name
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbPoint" << endl;
}
(*m_ssEntity) << " 10" << endl;
(*m_ssEntity) << s[0] << endl; // X in WCS coordinates
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << s[1] << endl; // Y in WCS coordinates
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << s[2] << endl; // Z in WCS coordinates
}
void CDxfWrite::writeArc(const double* s, const double* e, const double* c, bool dir)
{
double ax = s[0] - c[0];
double ay = s[1] - c[1];
double bx = e[0] - c[0];
double by = e[1] - c[1];
double start_angle = atan2(ay, ax) * 180 / M_PI;
double end_angle = atan2(by, bx) * 180 / M_PI;
double radius = sqrt(ax * ax + ay * ay);
if (!dir) {
double temp = start_angle;
start_angle = end_angle;
end_angle = temp;
}
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "ARC" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl; // Group code for layer name
(*m_ssEntity) << getLayerName() << endl; // Layer number
// (*m_ssEntity) << " 62" << endl;
// (*m_ssEntity) << " 0" << endl;
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbCircle" << endl;
}
(*m_ssEntity) << " 10" << endl; // Centre X
(*m_ssEntity) << c[0] << endl; // X in WCS coordinates
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << c[1] << endl; // Y in WCS coordinates
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << c[2] << endl; // Z in WCS coordinates
(*m_ssEntity) << " 40" << endl; //
(*m_ssEntity) << radius << endl; // Radius
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbArc" << endl;
}
(*m_ssEntity) << " 50" << endl;
(*m_ssEntity) << start_angle << endl; // Start angle
(*m_ssEntity) << " 51" << endl;
(*m_ssEntity) << end_angle << endl; // End angle
}
void CDxfWrite::writeCircle(const double* c, double radius)
{
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "CIRCLE" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl; // Group code for layer name
(*m_ssEntity) << getLayerName() << endl; // Layer number
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbCircle" << endl;
}
(*m_ssEntity) << " 10" << endl; // Centre X
(*m_ssEntity) << c[0] << endl; // X in WCS coordinates
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << c[1] << endl; // Y in WCS coordinates
// (*m_ssEntity) << " 30" << endl;
// (*m_ssEntity) << c[2] << endl; // Z in WCS coordinates
(*m_ssEntity) << " 40" << endl; //
(*m_ssEntity) << radius << endl; // Radius
}
void CDxfWrite::writeEllipse(const double* c,
double major_radius,
double minor_radius,
double rotation,
double start_angle,
double end_angle,
bool endIsCW)
{
double m[3] = {major_radius * sin(rotation), major_radius * cos(rotation), 0};
double ratio = minor_radius / major_radius;
if (!endIsCW) { // end is NOT CW from start
double temp = start_angle;
start_angle = end_angle;
end_angle = temp;
}
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "ELLIPSE" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl; // Group code for layer name
(*m_ssEntity) << getLayerName() << endl; // Layer number
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEllipse" << endl;
}
(*m_ssEntity) << " 10" << endl; // Centre X
(*m_ssEntity) << c[0] << endl; // X in WCS coordinates
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << c[1] << endl; // Y in WCS coordinates
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << c[2] << endl; // Z in WCS coordinates
(*m_ssEntity) << " 11" << endl; //
(*m_ssEntity) << m[0] << endl; // Major X
(*m_ssEntity) << " 21" << endl;
(*m_ssEntity) << m[1] << endl; // Major Y
(*m_ssEntity) << " 31" << endl;
(*m_ssEntity) << m[2] << endl; // Major Z
(*m_ssEntity) << " 40" << endl; //
(*m_ssEntity) << ratio
<< endl; // Ratio
// (*m_ssEntity) << "210" << endl; //extrusion dir??
// (*m_ssEntity) << "0" << endl;
// (*m_ssEntity) << "220" << endl;
// (*m_ssEntity) << "0" << endl;
// (*m_ssEntity) << "230" << endl;
// (*m_ssEntity) << "1" << endl;
(*m_ssEntity) << " 41" << endl;
(*m_ssEntity) << start_angle << endl; // Start angle (radians [0..2pi])
(*m_ssEntity) << " 42" << endl;
(*m_ssEntity) << end_angle << endl; // End angle
}
//***************************
// writeSpline
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeSpline(const SplineDataOut& sd)
{
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "SPLINE" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl; // Group code for layer name
(*m_ssEntity) << getLayerName() << endl; // Layer name
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbSpline" << endl;
}
(*m_ssEntity) << "210" << endl;
(*m_ssEntity) << "0" << endl;
(*m_ssEntity) << "220" << endl;
(*m_ssEntity) << "0" << endl;
(*m_ssEntity) << "230" << endl;
(*m_ssEntity) << "1" << endl;
(*m_ssEntity) << " 70" << endl;
(*m_ssEntity) << sd.flag << endl; // flags
(*m_ssEntity) << " 71" << endl;
(*m_ssEntity) << sd.degree << endl;
(*m_ssEntity) << " 72" << endl;
(*m_ssEntity) << sd.knots << endl;
(*m_ssEntity) << " 73" << endl;
(*m_ssEntity) << sd.control_points << endl;
(*m_ssEntity) << " 74" << endl;
(*m_ssEntity) << 0 << endl;
// (*m_ssEntity) << " 12" << endl;
// (*m_ssEntity) << sd.starttan.x << endl;
// (*m_ssEntity) << " 22" << endl;
// (*m_ssEntity) << sd.starttan.y << endl;
// (*m_ssEntity) << " 32" << endl;
// (*m_ssEntity) << sd.starttan.z << endl;
// (*m_ssEntity) << " 13" << endl;
// (*m_ssEntity) << sd.endtan.x << endl;
// (*m_ssEntity) << " 23" << endl;
// (*m_ssEntity) << sd.endtan.y << endl;
// (*m_ssEntity) << " 33" << endl;
// (*m_ssEntity) << sd.endtan.z << endl;
for (auto& k : sd.knot) {
(*m_ssEntity) << " 40" << endl;
(*m_ssEntity) << k << endl;
}
for (auto& w : sd.weight) {
(*m_ssEntity) << " 41" << endl;
(*m_ssEntity) << w << endl;
}
for (auto& center : sd.control) {
(*m_ssEntity) << " 10" << endl;
(*m_ssEntity) << center.x << endl; // X in WCS coordinates
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << center.y << endl; // Y in WCS coordinates
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << center.z << endl; // Z in WCS coordinates
}
for (auto& f : sd.fit) {
(*m_ssEntity) << " 11" << endl;
(*m_ssEntity) << f.x << endl; // X in WCS coordinates
(*m_ssEntity) << " 21" << endl;
(*m_ssEntity) << f.y << endl; // Y in WCS coordinates
(*m_ssEntity) << " 31" << endl;
(*m_ssEntity) << f.z << endl; // Z in WCS coordinates
}
}
//***************************
// writeVertex
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeVertex(double x, double y, double z)
{
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "VERTEX" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl;
(*m_ssEntity) << getLayerName() << endl;
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbVertex" << endl;
}
(*m_ssEntity) << " 10" << endl;
(*m_ssEntity) << x << endl;
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << y << endl;
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << z << endl;
(*m_ssEntity) << " 70" << endl;
(*m_ssEntity) << 0 << endl;
}
void CDxfWrite::writeText(const char* text,
const double* location1,
const double* location2,
const double height,
const int horizJust)
{
putText(text,
toVector3d(location1),
toVector3d(location2),
height,
horizJust,
m_ssEntity,
getEntityHandle(),
m_saveModelSpaceHandle);
}
//***************************
// putText
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::putText(const char* text,
const Base::Vector3d location1,
const Base::Vector3d location2,
const double height,
const int horizJust,
std::ostringstream* outStream,
const std::string handle,
const std::string ownerHandle)
{
(void)location2;
(*outStream) << " 0" << endl;
(*outStream) << "TEXT" << endl;
(*outStream) << " 5" << endl;
(*outStream) << handle << endl;
if (m_version > 12) {
(*outStream) << "330" << endl;
(*outStream) << ownerHandle << endl;
(*outStream) << "100" << endl;
(*outStream) << "AcDbEntity" << endl;
}
(*outStream) << " 8" << endl;
(*outStream) << getLayerName() << endl;
if (m_version > 12) {
(*outStream) << "100" << endl;
(*outStream) << "AcDbText" << endl;
}
// (*outStream) << " 39" << endl;
// (*outStream) << 0 << endl; //thickness
(*outStream) << " 10" << endl; // first alignment point
(*outStream) << location1.x << endl;
(*outStream) << " 20" << endl;
(*outStream) << location1.y << endl;
(*outStream) << " 30" << endl;
(*outStream) << location1.z << endl;
(*outStream) << " 40" << endl;
(*outStream) << height << endl;
(*outStream) << " 1" << endl;
(*outStream) << text << endl;
// (*outStream) << " 50" << endl;
// (*outStream) << 0 << endl; //rotation
// (*outStream) << " 41" << endl;
// (*outStream) << 1 << endl;
// (*outStream) << " 51" << endl;
// (*outStream) << 0 << endl;
(*outStream) << " 7" << endl;
(*outStream) << "STANDARD" << endl; // style
// (*outStream) << " 71" << endl; //default
// (*outStream) << "0" << endl;
(*outStream) << " 72" << endl;
(*outStream) << horizJust << endl;
//// (*outStream) << " 73" << endl;
//// (*outStream) << "0" << endl;
(*outStream) << " 11" << endl; // second alignment point
(*outStream) << location2.x << endl;
(*outStream) << " 21" << endl;
(*outStream) << location2.y << endl;
(*outStream) << " 31" << endl;
(*outStream) << location2.z << endl;
// (*outStream) << "210" << endl;
// (*outStream) << "0" << endl;
// (*outStream) << "220" << endl;
// (*outStream) << "0" << endl;
// (*outStream) << "230" << endl;
// (*outStream) << "1" << endl;
if (m_version > 12) {
(*outStream) << "100" << endl;
(*outStream) << "AcDbText" << endl;
}
}
void CDxfWrite::putArrow(Base::Vector3d arrowPos,
Base::Vector3d barb1Pos,
Base::Vector3d barb2Pos,
std::ostringstream* outStream,
const std::string handle,
const std::string ownerHandle)
{
(*outStream) << " 0" << endl;
(*outStream) << "SOLID" << endl;
(*outStream) << " 5" << endl;
(*outStream) << handle << endl;
if (m_version > 12) {
(*outStream) << "330" << endl;
(*outStream) << ownerHandle << endl;
(*outStream) << "100" << endl;
(*outStream) << "AcDbEntity" << endl;
}
(*outStream) << " 8" << endl;
(*outStream) << "0" << endl;
(*outStream) << " 62" << endl;
(*outStream) << " 0" << endl;
if (m_version > 12) {
(*outStream) << "100" << endl;
(*outStream) << "AcDbTrace" << endl;
}
(*outStream) << " 10" << endl;
(*outStream) << barb1Pos.x << endl;
(*outStream) << " 20" << endl;
(*outStream) << barb1Pos.y << endl;
(*outStream) << " 30" << endl;
(*outStream) << barb1Pos.z << endl;
(*outStream) << " 11" << endl;
(*outStream) << barb2Pos.x << endl;
(*outStream) << " 21" << endl;
(*outStream) << barb2Pos.y << endl;
(*outStream) << " 31" << endl;
(*outStream) << barb2Pos.z << endl;
(*outStream) << " 12" << endl;
(*outStream) << arrowPos.x << endl;
(*outStream) << " 22" << endl;
(*outStream) << arrowPos.y << endl;
(*outStream) << " 32" << endl;
(*outStream) << arrowPos.z << endl;
(*outStream) << " 13" << endl;
(*outStream) << arrowPos.x << endl;
(*outStream) << " 23" << endl;
(*outStream) << arrowPos.y << endl;
(*outStream) << " 33" << endl;
(*outStream) << arrowPos.z << endl;
}
//***************************
// writeLinearDim
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
#define ALIGNED 0
#define HORIZONTAL 1
#define VERTICAL 2
void CDxfWrite::writeLinearDim(const double* textMidPoint,
const double* lineDefPoint,
const double* extLine1,
const double* extLine2,
const char* dimText,
int type)
{
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "DIMENSION" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl;
(*m_ssEntity) << getLayerName() << endl;
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbDimension" << endl;
}
(*m_ssEntity) << " 2" << endl;
(*m_ssEntity) << "*" << getLayerName() << endl; // blockName
(*m_ssEntity) << " 10" << endl; // dimension line definition point
(*m_ssEntity) << lineDefPoint[0] << endl;
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << lineDefPoint[1] << endl;
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << lineDefPoint[2] << endl;
(*m_ssEntity) << " 11" << endl; // text mid point
(*m_ssEntity) << textMidPoint[0] << endl;
(*m_ssEntity) << " 21" << endl;
(*m_ssEntity) << textMidPoint[1] << endl;
(*m_ssEntity) << " 31" << endl;
(*m_ssEntity) << textMidPoint[2] << endl;
if (type == ALIGNED) {
(*m_ssEntity) << " 70" << endl;
(*m_ssEntity) << 1 << endl; // dimType1 = Aligned
}
if ((type == HORIZONTAL) || (type == VERTICAL)) {
(*m_ssEntity) << " 70" << endl;
(*m_ssEntity) << 32 << endl; // dimType0 = Aligned + 32 (bit for unique block)?
}
// (*m_ssEntity) << " 71" << endl; // not R12
// (*m_ssEntity) << 1 << endl; // attachPoint ??1 = topleft
(*m_ssEntity) << " 1" << endl;
(*m_ssEntity) << dimText << endl;
(*m_ssEntity) << " 3" << endl;
(*m_ssEntity) << "STANDARD" << endl; // style
// linear dims
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbAlignedDimension" << endl;
}
(*m_ssEntity) << " 13" << endl;
(*m_ssEntity) << extLine1[0] << endl;
(*m_ssEntity) << " 23" << endl;
(*m_ssEntity) << extLine1[1] << endl;
(*m_ssEntity) << " 33" << endl;
(*m_ssEntity) << extLine1[2] << endl;
(*m_ssEntity) << " 14" << endl;
(*m_ssEntity) << extLine2[0] << endl;
(*m_ssEntity) << " 24" << endl;
(*m_ssEntity) << extLine2[1] << endl;
(*m_ssEntity) << " 34" << endl;
(*m_ssEntity) << extLine2[2] << endl;
if (m_version > 12) {
if (type == VERTICAL) {
(*m_ssEntity) << " 50" << endl;
(*m_ssEntity) << "90" << endl;
}
if ((type == HORIZONTAL) || (type == VERTICAL)) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbRotatedDimension" << endl;
}
}
writeDimBlockPreamble();
writeLinearDimBlock(textMidPoint, lineDefPoint, extLine1, extLine2, dimText, type);
writeBlockTrailer();
}
//***************************
// writeAngularDim
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeAngularDim(const double* textMidPoint,
const double* lineDefPoint,
const double* startExt1,
const double* endExt1,
const double* startExt2,
const double* endExt2,
const char* dimText)
{
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "DIMENSION" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl;
(*m_ssEntity) << getLayerName() << endl;
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbDimension" << endl;
}
(*m_ssEntity) << " 2" << endl;
(*m_ssEntity) << "*" << getLayerName() << endl; // blockName
(*m_ssEntity) << " 10" << endl;
(*m_ssEntity) << endExt2[0] << endl;
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << endExt2[1] << endl;
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << endExt2[2] << endl;
(*m_ssEntity) << " 11" << endl;
(*m_ssEntity) << textMidPoint[0] << endl;
(*m_ssEntity) << " 21" << endl;
(*m_ssEntity) << textMidPoint[1] << endl;
(*m_ssEntity) << " 31" << endl;
(*m_ssEntity) << textMidPoint[2] << endl;
(*m_ssEntity) << " 70" << endl;
(*m_ssEntity) << 2 << endl; // dimType 2 = Angular 5 = Angular 3 point
// +32 for block?? (not R12)
// (*m_ssEntity) << " 71" << endl; // not R12? not required?
// (*m_ssEntity) << 5 << endl; // attachPoint 5 = middle
(*m_ssEntity) << " 1" << endl;
(*m_ssEntity) << dimText << endl;
(*m_ssEntity) << " 3" << endl;
(*m_ssEntity) << "STANDARD" << endl; // style
// angular dims
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDb2LineAngularDimension" << endl;
}
(*m_ssEntity) << " 13" << endl;
(*m_ssEntity) << startExt1[0] << endl;
(*m_ssEntity) << " 23" << endl;
(*m_ssEntity) << startExt1[1] << endl;
(*m_ssEntity) << " 33" << endl;
(*m_ssEntity) << startExt1[2] << endl;
(*m_ssEntity) << " 14" << endl;
(*m_ssEntity) << endExt1[0] << endl;
(*m_ssEntity) << " 24" << endl;
(*m_ssEntity) << endExt1[1] << endl;
(*m_ssEntity) << " 34" << endl;
(*m_ssEntity) << endExt1[2] << endl;
(*m_ssEntity) << " 15" << endl;
(*m_ssEntity) << startExt2[0] << endl;
(*m_ssEntity) << " 25" << endl;
(*m_ssEntity) << startExt2[1] << endl;
(*m_ssEntity) << " 35" << endl;
(*m_ssEntity) << startExt2[2] << endl;
(*m_ssEntity) << " 16" << endl;
(*m_ssEntity) << lineDefPoint[0] << endl;
(*m_ssEntity) << " 26" << endl;
(*m_ssEntity) << lineDefPoint[1] << endl;
(*m_ssEntity) << " 36" << endl;
(*m_ssEntity) << lineDefPoint[2] << endl;
writeDimBlockPreamble();
writeAngularDimBlock(textMidPoint,
lineDefPoint,
startExt1,
endExt1,
startExt2,
endExt2,
dimText);
writeBlockTrailer();
}
//***************************
// writeRadialDim
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeRadialDim(const double* centerPoint,
const double* textMidPoint,
const double* arcPoint,
const char* dimText)
{
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "DIMENSION" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl;
(*m_ssEntity) << getLayerName() << endl;
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbDimension" << endl;
}
(*m_ssEntity) << " 2" << endl;
(*m_ssEntity) << "*" << getLayerName() << endl; // blockName
(*m_ssEntity) << " 10" << endl; // arc center point
(*m_ssEntity) << centerPoint[0] << endl;
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << centerPoint[1] << endl;
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << centerPoint[2] << endl;
(*m_ssEntity) << " 11" << endl; // text mid point
(*m_ssEntity) << textMidPoint[0] << endl;
(*m_ssEntity) << " 21" << endl;
(*m_ssEntity) << textMidPoint[1] << endl;
(*m_ssEntity) << " 31" << endl;
(*m_ssEntity) << textMidPoint[2] << endl;
(*m_ssEntity) << " 70" << endl;
(*m_ssEntity) << 4 << endl; // dimType 4 = Radius
// (*m_ssEntity) << " 71" << endl; // not R12
// (*m_ssEntity) << 1 << endl; // attachPoint 5 = middle center
(*m_ssEntity) << " 1" << endl;
(*m_ssEntity) << dimText << endl;
(*m_ssEntity) << " 3" << endl;
(*m_ssEntity) << "STANDARD" << endl; // style
// radial dims
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbRadialDimension" << endl;
}
(*m_ssEntity) << " 15" << endl;
(*m_ssEntity) << arcPoint[0] << endl;
(*m_ssEntity) << " 25" << endl;
(*m_ssEntity) << arcPoint[1] << endl;
(*m_ssEntity) << " 35" << endl;
(*m_ssEntity) << arcPoint[2] << endl;
(*m_ssEntity) << " 40" << endl; // leader length????
(*m_ssEntity) << 0 << endl;
writeDimBlockPreamble();
writeRadialDimBlock(centerPoint, textMidPoint, arcPoint, dimText);
writeBlockTrailer();
}
//***************************
// writeDiametricDim
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeDiametricDim(const double* textMidPoint,
const double* arcPoint1,
const double* arcPoint2,
const char* dimText)
{
(*m_ssEntity) << " 0" << endl;
(*m_ssEntity) << "DIMENSION" << endl;
(*m_ssEntity) << " 5" << endl;
(*m_ssEntity) << getEntityHandle() << endl;
if (m_version > 12) {
(*m_ssEntity) << "330" << endl;
(*m_ssEntity) << m_saveModelSpaceHandle << endl;
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbEntity" << endl;
}
(*m_ssEntity) << " 8" << endl;
(*m_ssEntity) << getLayerName() << endl;
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbDimension" << endl;
}
(*m_ssEntity) << " 2" << endl;
(*m_ssEntity) << "*" << getLayerName() << endl; // blockName
(*m_ssEntity) << " 10" << endl;
(*m_ssEntity) << arcPoint1[0] << endl;
(*m_ssEntity) << " 20" << endl;
(*m_ssEntity) << arcPoint1[1] << endl;
(*m_ssEntity) << " 30" << endl;
(*m_ssEntity) << arcPoint1[2] << endl;
(*m_ssEntity) << " 11" << endl; // text mid point
(*m_ssEntity) << textMidPoint[0] << endl;
(*m_ssEntity) << " 21" << endl;
(*m_ssEntity) << textMidPoint[1] << endl;
(*m_ssEntity) << " 31" << endl;
(*m_ssEntity) << textMidPoint[2] << endl;
(*m_ssEntity) << " 70" << endl;
(*m_ssEntity) << 3 << endl; // dimType 3 = Diameter
// (*m_ssEntity) << " 71" << endl; // not R12
// (*m_ssEntity) << 5 << endl; // attachPoint 5 = middle center
(*m_ssEntity) << " 1" << endl;
(*m_ssEntity) << dimText << endl;
(*m_ssEntity) << " 3" << endl;
(*m_ssEntity) << "STANDARD" << endl; // style
// diametric dims
if (m_version > 12) {
(*m_ssEntity) << "100" << endl;
(*m_ssEntity) << "AcDbDiametricDimension" << endl;
}
(*m_ssEntity) << " 15" << endl;
(*m_ssEntity) << arcPoint2[0] << endl;
(*m_ssEntity) << " 25" << endl;
(*m_ssEntity) << arcPoint2[1] << endl;
(*m_ssEntity) << " 35" << endl;
(*m_ssEntity) << arcPoint2[2] << endl;
(*m_ssEntity) << " 40" << endl; // leader length????
(*m_ssEntity) << 0 << endl;
writeDimBlockPreamble();
writeDiametricDimBlock(textMidPoint, arcPoint1, arcPoint2, dimText);
writeBlockTrailer();
}
//***************************
// writeDimBlockPreamble
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeDimBlockPreamble()
{
if (m_version > 12) {
std::string blockName("*");
blockName += getLayerName();
m_saveBlkRecordHandle = getBlkRecordHandle();
addBlockName(blockName, m_saveBlkRecordHandle);
}
m_currentBlock = getBlockHandle();
(*m_ssBlock) << " 0" << endl;
(*m_ssBlock) << "BLOCK" << endl;
(*m_ssBlock) << " 5" << endl;
(*m_ssBlock) << m_currentBlock << endl;
if (m_version > 12) {
(*m_ssBlock) << "330" << endl;
(*m_ssBlock) << m_saveBlkRecordHandle << endl;
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbEntity" << endl;
}
(*m_ssBlock) << " 8" << endl;
(*m_ssBlock) << getLayerName() << endl;
if (m_version > 12) {
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbBlockBegin" << endl;
}
(*m_ssBlock) << " 2" << endl;
(*m_ssBlock) << "*" << getLayerName() << endl; // blockName
(*m_ssBlock) << " 70" << endl;
(*m_ssBlock) << " 1" << endl;
(*m_ssBlock) << " 10" << endl;
(*m_ssBlock) << 0.0 << endl;
(*m_ssBlock) << " 20" << endl;
(*m_ssBlock) << 0.0 << endl;
(*m_ssBlock) << " 30" << endl;
(*m_ssBlock) << 0.0 << endl;
(*m_ssBlock) << " 3" << endl;
(*m_ssBlock) << "*" << getLayerName() << endl; // blockName
(*m_ssBlock) << " 1" << endl;
(*m_ssBlock) << " " << endl;
}
//***************************
// writeBlockTrailer
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeBlockTrailer()
{
(*m_ssBlock) << " 0" << endl;
(*m_ssBlock) << "ENDBLK" << endl;
(*m_ssBlock) << " 5" << endl;
(*m_ssBlock) << getBlockHandle() << endl;
if (m_version > 12) {
(*m_ssBlock) << "330" << endl;
(*m_ssBlock) << m_saveBlkRecordHandle << endl;
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbEntity" << endl;
}
// (*m_ssBlock) << " 67" << endl;
// (*m_ssBlock) << "1" << endl;
(*m_ssBlock) << " 8" << endl;
(*m_ssBlock) << getLayerName() << endl;
if (m_version > 12) {
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbBlockEnd" << endl;
}
}
//***************************
// writeLinearDimBlock
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeLinearDimBlock(const double* textMidPoint,
const double* dimLine,
const double* e1Start,
const double* e2Start,
const char* dimText,
int type)
{
Base::Vector3d e1S(e1Start[0], e1Start[1], e1Start[2]);
Base::Vector3d e2S(e2Start[0], e2Start[1], e2Start[2]);
Base::Vector3d dl(dimLine[0], dimLine[1], dimLine[2]); // point on DimLine (somewhere!)
Base::Vector3d perp = dl.DistanceToLineSegment(e2S, e1S);
Base::Vector3d e1E = e1S - perp;
Base::Vector3d e2E = e2S - perp;
Base::Vector3d para = e1E - e2E;
Base::Vector3d X(1.0, 0.0, 0.0);
double angle = para.GetAngle(X);
angle = angle * 180.0 / M_PI;
if (type == ALIGNED) {
// NOP
}
else if (type == HORIZONTAL) {
double x = e1Start[0];
double y = dimLine[1];
e1E = Base::Vector3d(x, y, 0.0);
x = e2Start[0];
e2E = Base::Vector3d(x, y, 0.0);
perp = Base::Vector3d(0, -1, 0); // down
para = Base::Vector3d(1, 0, 0); // right
if (dimLine[1] > e1Start[1]) {
perp = Base::Vector3d(0, 1, 0); // up
}
if (e1Start[0] > e2Start[0]) {
para = Base::Vector3d(-1, 0, 0); // left
}
angle = 0;
}
else if (type == VERTICAL) {
double x = dimLine[0];
double y = e1Start[1];
e1E = Base::Vector3d(x, y, 0.0);
y = e2Start[1];
e2E = Base::Vector3d(x, y, 0.0);
perp = Base::Vector3d(1, 0, 0);
para = Base::Vector3d(0, 1, 0);
if (dimLine[0] < e1Start[0]) {
perp = Base::Vector3d(-1, 0, 0);
}
if (e1Start[1] > e2Start[1]) {
para = Base::Vector3d(0, -1, 0);
}
angle = 90;
}
double arrowLen = 5.0; // magic number
double arrowWidth = arrowLen / 6.0 / 2.0; // magic number calc!
putLine(e2S, e2E, m_ssBlock, getBlockHandle(), m_saveBlkRecordHandle);
putLine(e1S, e1E, m_ssBlock, getBlockHandle(), m_saveBlkRecordHandle);
putLine(e1E, e2E, m_ssBlock, getBlockHandle(), m_saveBlkRecordHandle);
putText(dimText,
toVector3d(textMidPoint),
toVector3d(dimLine),
3.5,
1,
m_ssBlock,
getBlockHandle(),
m_saveBlkRecordHandle);
perp.Normalize();
para.Normalize();
Base::Vector3d arrowStart = e1E;
Base::Vector3d barb1 = arrowStart + perp * arrowWidth - para * arrowLen;
Base::Vector3d barb2 = arrowStart - perp * arrowWidth - para * arrowLen;
putArrow(arrowStart, barb1, barb2, m_ssBlock, getBlockHandle(), m_saveBlkRecordHandle);
arrowStart = e2E;
barb1 = arrowStart + perp * arrowWidth + para * arrowLen;
barb2 = arrowStart - perp * arrowWidth + para * arrowLen;
putArrow(arrowStart, barb1, barb2, m_ssBlock, getBlockHandle(), m_saveBlkRecordHandle);
}
//***************************
// writeAngularDimBlock
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeAngularDimBlock(const double* textMidPoint,
const double* lineDefPoint,
const double* startExt1,
const double* endExt1,
const double* startExt2,
const double* endExt2,
const char* dimText)
{
Base::Vector3d e1S(startExt1[0], startExt1[1], startExt1[2]); // apex
Base::Vector3d e2S(startExt2[0], startExt2[1], startExt2[2]);
Base::Vector3d e1E(endExt1[0], endExt1[1], endExt1[2]);
Base::Vector3d e2E(endExt2[0], endExt2[1], endExt2[2]);
Base::Vector3d e1 = e1E - e1S;
Base::Vector3d e2 = e2E - e2S;
double startAngle = atan2(e2.y, e2.x);
double endAngle = atan2(e1.y, e1.x);
double span = fabs(endAngle - startAngle);
double offset = span * 0.10;
if (startAngle < 0) {
startAngle += 2.0 * M_PI;
}
if (endAngle < 0) {
endAngle += 2.0 * M_PI;
}
Base::Vector3d startOff(cos(startAngle + offset), sin(startAngle + offset), 0.0);
Base::Vector3d endOff(cos(endAngle - offset), sin(endAngle - offset), 0.0);
startAngle = startAngle * 180.0 / M_PI;
endAngle = endAngle * 180.0 / M_PI;
Base::Vector3d linePt(lineDefPoint[0], lineDefPoint[1], lineDefPoint[2]);
double radius = (e2S - linePt).Length();
(*m_ssBlock) << " 0" << endl;
(*m_ssBlock) << "ARC" << endl; // dimline arc
(*m_ssBlock) << " 5" << endl;
(*m_ssBlock) << getBlockHandle() << endl;
if (m_version > 12) {
(*m_ssBlock) << "330" << endl;
(*m_ssBlock) << m_saveBlkRecordHandle << endl;
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbEntity" << endl;
}
(*m_ssBlock) << " 8" << endl;
(*m_ssBlock) << "0" << endl;
// (*m_ssBlock) << " 62" << endl;
// (*m_ssBlock) << " 0" << endl;
if (m_version > 12) {
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbCircle" << endl;
}
(*m_ssBlock) << " 10" << endl;
(*m_ssBlock) << startExt2[0] << endl; // arc center
(*m_ssBlock) << " 20" << endl;
(*m_ssBlock) << startExt2[1] << endl;
(*m_ssBlock) << " 30" << endl;
(*m_ssBlock) << startExt2[2] << endl;
(*m_ssBlock) << " 40" << endl;
(*m_ssBlock) << radius << endl; // radius
if (m_version > 12) {
(*m_ssBlock) << "100" << endl;
(*m_ssBlock) << "AcDbArc" << endl;
}
(*m_ssBlock) << " 50" << endl;
(*m_ssBlock) << startAngle << endl; // start angle
(*m_ssBlock) << " 51" << endl;
(*m_ssBlock) << endAngle << endl; // end angle
putText(dimText,
toVector3d(textMidPoint),
toVector3d(textMidPoint),
3.5,
1,
m_ssBlock,
getBlockHandle(),
m_saveBlkRecordHandle);
e1.Normalize();
e2.Normalize();
Base::Vector3d arrow1Start = e1S + e1 * radius;
Base::Vector3d arrow2Start = e2S + e2 * radius;
// wf: idk why the Tan pts have to be reversed. something to do with CW angles in Dxf?
Base::Vector3d endTan = e1S + (startOff * radius);
Base::Vector3d startTan = e2S + (endOff * radius);
Base::Vector3d tanP1 = (arrow1Start - startTan).Normalize();
Base::Vector3d perp1(-tanP1.y, tanP1.x, tanP1.z);
Base::Vector3d tanP2 = (arrow2Start - endTan).Normalize();
Base::Vector3d perp2(-tanP2.y, tanP2.x, tanP2.z);
double arrowLen = 5.0; // magic number
double arrowWidth = arrowLen / 6.0 / 2.0; // magic number calc!
Base::Vector3d barb1 = arrow1Start + perp1 * arrowWidth - tanP1 * arrowLen;
Base::Vector3d barb2 = arrow1Start - perp1 * arrowWidth - tanP1 * arrowLen;
putArrow(arrow1Start, barb1, barb2, m_ssBlock, getBlockHandle(), m_saveBlkRecordHandle);
barb1 = arrow2Start + perp2 * arrowWidth - tanP2 * arrowLen;
barb2 = arrow2Start - perp2 * arrowWidth - tanP2 * arrowLen;
putArrow(arrow2Start, barb1, barb2, m_ssBlock, getBlockHandle(), m_saveBlkRecordHandle);
}
//***************************
// writeRadialDimBlock
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeRadialDimBlock(const double* centerPoint,
const double* textMidPoint,
const double* arcPoint,
const char* dimText)
{
putLine(toVector3d(centerPoint),
toVector3d(arcPoint),
m_ssBlock,
getBlockHandle(),
m_saveBlkRecordHandle);
putText(dimText,
toVector3d(textMidPoint),
toVector3d(textMidPoint),
3.5,
1,
m_ssBlock,
getBlockHandle(),
m_saveBlkRecordHandle);
Base::Vector3d center(centerPoint[0], centerPoint[1], centerPoint[2]);
Base::Vector3d a(arcPoint[0], arcPoint[1], arcPoint[2]);
Base::Vector3d para = a - center;
double arrowLen = 5.0; // magic number
double arrowWidth = arrowLen / 6.0 / 2.0; // magic number calc!
para.Normalize();
Base::Vector3d perp(-para.y, para.x, para.z);
Base::Vector3d arrowStart = a;
Base::Vector3d barb1 = arrowStart + perp * arrowWidth - para * arrowLen;
Base::Vector3d barb2 = arrowStart - perp * arrowWidth - para * arrowLen;
putArrow(arrowStart, barb1, barb2, m_ssBlock, getBlockHandle(), m_saveBlkRecordHandle);
}
//***************************
// writeDiametricDimBlock
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeDiametricDimBlock(const double* textMidPoint,
const double* arcPoint1,
const double* arcPoint2,
const char* dimText)
{
putLine(toVector3d(arcPoint1),
toVector3d(arcPoint2),
m_ssBlock,
getBlockHandle(),
m_saveBlkRecordHandle);
putText(dimText,
toVector3d(textMidPoint),
toVector3d(textMidPoint),
3.5,
1,
m_ssBlock,
getBlockHandle(),
m_saveBlkRecordHandle);
Base::Vector3d a1(arcPoint1[0], arcPoint1[1], arcPoint1[2]);
Base::Vector3d a2(arcPoint2[0], arcPoint2[1], arcPoint2[2]);
Base::Vector3d para = a2 - a1;
double arrowLen = 5.0; // magic number
double arrowWidth = arrowLen / 6.0 / 2.0; // magic number calc!
para.Normalize();
Base::Vector3d perp(-para.y, para.x, para.z);
Base::Vector3d arrowStart = a1;
Base::Vector3d barb1 = arrowStart + perp * arrowWidth + para * arrowLen;
Base::Vector3d barb2 = arrowStart - perp * arrowWidth + para * arrowLen;
putArrow(arrowStart, barb1, barb2, m_ssBlock, getBlockHandle(), m_saveBlkRecordHandle);
arrowStart = a2;
barb1 = arrowStart + perp * arrowWidth - para * arrowLen;
barb2 = arrowStart - perp * arrowWidth - para * arrowLen;
putArrow(arrowStart, barb1, barb2, m_ssBlock, getBlockHandle(), m_saveBlkRecordHandle);
}
//***************************
// writeBlocksSection
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeBlocksSection()
{
if (m_version < 14) {
std::stringstream ss;
ss << "blocks1" << m_version << ".rub";
std::string fileSpec = m_dataDir + ss.str();
(*m_ofs) << getPlateFile(fileSpec);
}
// write blocks content
(*m_ofs) << (*m_ssBlock).str();
(*m_ofs) << " 0" << endl;
(*m_ofs) << "ENDSEC" << endl;
}
//***************************
// writeEntitiesSection
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeEntitiesSection()
{
std::stringstream ss;
ss << "entities" << m_version << ".rub";
std::string fileSpec = m_dataDir + ss.str();
(*m_ofs) << getPlateFile(fileSpec);
// write entities content
(*m_ofs) << (*m_ssEntity).str();
(*m_ofs) << " 0" << endl;
(*m_ofs) << "ENDSEC" << endl;
}
//***************************
// writeObjectsSection
// added by Wandererfan 2018 (wandererfan@gmail.com) for FreeCAD project
void CDxfWrite::writeObjectsSection()
{
if (m_version < 14) {
return;
}
std::stringstream ss;
ss << "objects" << m_version << ".rub";
std::string fileSpec = m_dataDir + ss.str();
(*m_ofs) << getPlateFile(fileSpec);
}
CDxfRead::CDxfRead(const char* filepath)
{
// start the file
m_ifs = new ifstream(filepath);
if (!(*m_ifs)) {
m_fail = true;
ImportError("DXF file didn't load\n");
return;
}
m_ifs->imbue(std::locale("C"));
}
CDxfRead::~CDxfRead()
{
delete m_ifs;
delete m_CodePage;
delete m_encoding;
}
double CDxfRead::mm(double value) const
{
// re #6461
// this if handles situation of malformed DXF file where
// MEASUREMENT specifies English units, but
// INSUNITS specifies millimeters or is not specified
//(millimeters is our default)
if (m_measurement_inch && (m_eUnits == eMillimeters)) {
value *= 25.4;
}
switch (m_eUnits) {
case eUnspecified:
return (value * 1.0); // We don't know any better.
case eInches:
return (value * 25.4);
case eFeet:
return (value * 25.4 * 12);
case eMiles:
return (value * 1609344.0);
case eMillimeters:
return (value * 1.0);
case eCentimeters:
return (value * 10.0);
case eMeters:
return (value * 1000.0);
case eKilometers:
return (value * 1000000.0);
case eMicroinches:
return (value * 25.4 / 1000.0);
case eMils:
return (value * 25.4 / 1000.0);
case eYards:
return (value * 3 * 12 * 25.4);
case eAngstroms:
return (value * 0.0000001);
case eNanometers:
return (value * 0.000001);
case eMicrons:
return (value * 0.001);
case eDecimeters:
return (value * 100.0);
case eDekameters:
return (value * 10000.0);
case eHectometers:
return (value * 100000.0);
case eGigameters:
return (value * 1000000000000.0);
case eAstronomicalUnits:
return (value * 149597870690000.0);
case eLightYears:
return (value * 9454254955500000000.0);
case eParsecs:
return (value * 30856774879000000000.0);
default:
return (value * 1.0); // We don't know any better.
} // End switch
} // End mm() method
//
// Setup for ProcessCommonEntityAttribute
void CDxfRead::Setup3DVectorAttribute(int x_record_type, double destination[3])
{
SetupScaledDoubleAttribute(x_record_type, destination[0]);
SetupScaledDoubleAttribute(x_record_type + 10, destination[1]);
SetupScaledDoubleAttribute(x_record_type + 20, destination[2]);
destination[0] = destination[1] = destination[2] = 0.0;
}
void CDxfRead::Setup3DCoordinatesIntoLists(int x_record_type,
list<double>& x_destination,
list<double>& y_destination,
list<double>& z_destination)
{
SetupScaledDoubleIntoList(x_record_type, x_destination);
SetupScaledDoubleIntoList(x_record_type + 10, y_destination);
SetupScaledDoubleIntoList(x_record_type + 20, z_destination);
}
void CDxfRead::SetupScaledDoubleAttribute(int x_record_type, double& destination)
{
m_coordinate_attributes.emplace(x_record_type, std::pair(&ProcessScaledDouble, &destination));
}
void CDxfRead::SetupScaledDoubleIntoList(int x_record_type, list<double>& destination)
{
m_coordinate_attributes.emplace(x_record_type,
std::pair(&ProcessScaledDoubleIntoList, &destination));
}
void CDxfRead::SetupStringAttribute(int x_record_type, char* destination)
{
m_coordinate_attributes.emplace(x_record_type, std::pair(&ProcessString, destination));
}
void CDxfRead::SetupStringAttribute(int x_record_type, std::string& destination)
{
m_coordinate_attributes.emplace(x_record_type, std::pair(&ProcessStdString, &destination));
}
template<typename T>
void CDxfRead::SetupValueAttribute(int record_type, T& destination)
{
m_coordinate_attributes.emplace(record_type, std::pair(&ProcessValue<T>, &destination));
}
//
// Static processing helpers for ProcessCommonEntityAttribute
void CDxfRead::ProcessScaledDouble(CDxfRead* object, void* target)
{
std::istringstream ss;
ss.imbue(std::locale("C"));
ss.str(object->m_record_data);
double value;
ss >> value;
if (ss.fail()) {
object->ImportError("Unable to parse value '%s', using zero as its value\n",
object->m_record_data);
value = 0;
}
*static_cast<double*>(target) = object->mm(value);
}
void CDxfRead::ProcessScaledDoubleIntoList(CDxfRead* object, void* target)
{
std::istringstream ss;
ss.imbue(std::locale("C"));
ss.str(object->m_record_data);
double value;
ss >> value;
if (ss.fail()) {
object->ImportError("Unable to parse value '%s', using zero as its value\n",
object->m_record_data);
value = 0;
}
static_cast<std::list<double>*>(target)->push_back(object->mm(value));
}
template<typename T>
void CDxfRead::ProcessValue(CDxfRead* object, void* target)
{
std::istringstream ss;
ss.imbue(std::locale("C"));
ss.str(object->m_record_data);
ss >> *static_cast<T*>(target);
if (ss.fail()) {
object->ImportError("Unable to parse value '%s', using zero as its value\n",
object->m_record_data);
*static_cast<T*>(target) = 0;
}
}
void CDxfRead::ProcessStdString(CDxfRead* object, void* target)
{
*static_cast<std::string*>(target) = object->m_record_data;
}
void CDxfRead::ProcessString(CDxfRead* object, void* target)
{
strcpy(static_cast<char*>(target), object->m_record_data);
}
void CDxfRead::InitializeAttributes()
{
m_coordinate_attributes.clear();
}
void CDxfRead::InitializeCommonEntityAttributes()
{
InitializeAttributes();
strcpy(m_layer_name, "0");
m_LineType[0] = '\0';
m_ColorIndex = ColorBylayer;
SetupStringAttribute(6, m_LineType);
SetupStringAttribute(8, m_layer_name);
SetupValueAttribute(62, m_ColorIndex);
}
bool CDxfRead::ProcessAttribute()
{
auto found = m_coordinate_attributes.find(m_record_type);
if (found != m_coordinate_attributes.end()) {
(*found->second.first)(this, found->second.second);
return true;
}
return false;
}
void CDxfRead::ProcessAllAttributes()
{
while (get_next_record() && m_record_type != 0) {
ProcessAttribute();
}
repeat_last_record();
}
//
// The individual Entity reader functions
// These return false if they catch an exception and ignore it because of ignore_errors.
bool CDxfRead::ReadLine()
{
double start[3], end[3];
Setup3DVectorAttribute(10, start);
Setup3DVectorAttribute(11, end);
ProcessAllAttributes();
OnReadLine(start, end, LineTypeIsHidden());
return true;
}
bool CDxfRead::ReadPoint()
{
double location[3];
Setup3DVectorAttribute(10, location);
ProcessAllAttributes();
OnReadPoint(location);
return true;
}
bool CDxfRead::ReadArc()
{
double start_angle_degrees = 0;
double end_angle_degrees = 0;
double radius = 0;
double centre[3];
double z_extrusion_dir = 1.0;
Setup3DVectorAttribute(10, centre);
SetupScaledDoubleAttribute(40, radius);
SetupValueAttribute(50, start_angle_degrees);
SetupValueAttribute(51, end_angle_degrees);
SetupValueAttribute(230, z_extrusion_dir);
ProcessAllAttributes();
OnReadArc(start_angle_degrees,
end_angle_degrees,
radius,
centre,
z_extrusion_dir,
LineTypeIsHidden());
return true;
}
bool CDxfRead::ReadSpline()
{
struct SplineData sd;
sd.degree = 0;
sd.knots = 0;
sd.flag = 0;
sd.control_points = 0;
sd.fit_points = 0;
Setup3DVectorAttribute(210, sd.norm);
SetupValueAttribute(70, sd.flag);
SetupValueAttribute(71, sd.degree);
SetupValueAttribute(72, sd.knots);
SetupValueAttribute(73, sd.control_points);
SetupValueAttribute(74, sd.fit_points);
SetupScaledDoubleIntoList(40, sd.knot);
SetupScaledDoubleIntoList(41, sd.weight);
Setup3DCoordinatesIntoLists(10, sd.controlx, sd.controly, sd.controlz);
Setup3DCoordinatesIntoLists(11, sd.fitx, sd.fity, sd.fitz);
Setup3DCoordinatesIntoLists(12, sd.starttanx, sd.starttany, sd.starttanz);
Setup3DCoordinatesIntoLists(12, sd.endtanx, sd.endtany, sd.endtanz);
ProcessAllAttributes();
OnReadSpline(sd);
return true;
}
bool CDxfRead::ReadCircle()
{
double radius = 0.0;
double centre[3];
Setup3DVectorAttribute(10, centre);
SetupScaledDoubleAttribute(40, radius);
ProcessAllAttributes();
OnReadCircle(centre, radius, LineTypeIsHidden());
return true;
}
bool CDxfRead::ReadText()
{
double insertionPoint[3];
double height = 0.03082;
double rotation = 0;
std::string textPrefix;
Setup3DVectorAttribute(10, insertionPoint);
SetupScaledDoubleAttribute(40, height);
SetupValueAttribute(50, rotation);
while (get_next_record() && m_record_type != 0) {
if (!ProcessAttribute()) {
switch (m_record_type) {
case 3:
// Additional text that goes before the type 1 text
// Note that if breaking the text into type-3 records splits a UFT-8 encoding we
// do the decoding after splicing the lines together. I'm not sure if this
// actually occurs, but handling the text this way will treat this condition
// properly.
textPrefix.append(m_record_data);
break;
case 1:
// final text
textPrefix.append(m_record_data);
break;
}
}
}
const char* utfStr = (this->*stringToUTF8)(textPrefix.c_str());
if (utfStr != nullptr) {
OnReadText(insertionPoint, height * 25.4 / 72.0, utfStr, rotation);
if (utfStr != textPrefix.c_str()) {
delete utfStr;
}
}
else {
ImportError("Unable to process encoding for TEXT/MTEXT '%s'", textPrefix.c_str());
}
repeat_last_record();
return true;
}
bool CDxfRead::ReadEllipse()
{
double centre[3];
double majorAxisEnd[3]; // relative to centre
double eccentricity = 0;
double startAngleRadians = 0;
double endAngleRadians = 2 * M_PI;
Setup3DVectorAttribute(10, centre);
Setup3DVectorAttribute(11, majorAxisEnd);
SetupValueAttribute(40, eccentricity);
SetupValueAttribute(41, startAngleRadians);
SetupValueAttribute(42, endAngleRadians);
ProcessAllAttributes();
OnReadEllipse(centre, majorAxisEnd, eccentricity, startAngleRadians, endAngleRadians);
return true;
}
bool CDxfRead::ReadLwPolyLine()
{
VertexInfo currentVertex = {{0, 0, 0}, 0};
list<VertexInfo> vertices;
int flags = 0;
bool have_x = false;
bool have_y = false;
// The documentation for LZPOLYLINE does not specify how you know if you have a new vertex.
// It also does not specify where the bulge, line-width, etc for a particular segment are placed
// relative to the two end vertices.
// We assume here that if we see an X or Y coordinate but we already have the same coordinate,
// a new vertex is starting, and any previous vertex is completely specified. Furthermore, line
// attributes like bulge are placed between the X/Y coordinates for the vertex that starts the
// stroke and the X/Y coordinates for the vertex that ends the stroke or the end of the entity.
// In the latter case the stroke attributes apply to the closure stroke (if any) which ends at
// the first vertex.
Setup3DVectorAttribute(10, currentVertex.location);
SetupScaledDoubleAttribute(42, currentVertex.bulge);
SetupValueAttribute(70, flags);
while (get_next_record() && m_record_type != 0) {
if ((m_record_type == 10 && have_x) || (m_record_type == 21 && have_y)) {
// Starting a new vertex and there is a previous vertex. Save it and init a new one.
vertices.push_back(currentVertex);
currentVertex.location[0] = 0.0;
currentVertex.location[1] = 0.0;
currentVertex.location[2] = 0.0;
currentVertex.bulge = 0.0;
have_x = m_record_type == 10;
have_y = m_record_type == 20;
}
else if (m_record_type == 10) {
have_x = true;
}
else if (m_record_type == 10) {
have_y = true;
}
ProcessAttribute();
}
// At the end of the entity if we have vertex information use this as the final vertex.
// (else it was a line with no vertices at all)
if (have_x || have_y) {
vertices.push_back(currentVertex);
}
OnReadPolyline(vertices, flags);
repeat_last_record();
return true;
}
bool CDxfRead::ReadPolyLine()
{
VertexInfo currentVertex = {{0, 0, 0}, 0};
list<VertexInfo> vertices;
int flags = 0;
SetupValueAttribute(70, flags);
ProcessAllAttributes();
// We are now followed by a series of VERTEX entities followed by ENDSEQ.
// To avoid eating and discarding the rest of the entieies if ENDSEQ is missing,
// we quit on any unknown type-0 record.
Setup3DVectorAttribute(10, currentVertex.location);
SetupScaledDoubleAttribute(42, currentVertex.bulge);
while (get_next_record() && m_record_type == 0 && !strcmp(m_record_data, "VERTEX")) {
// Set vertex defaults
currentVertex.location[0] = 0.0;
currentVertex.location[1] = 0.0;
currentVertex.location[2] = 0.0;
currentVertex.bulge = 0.0;
ProcessAllAttributes();
vertices.push_back(currentVertex);
}
if (strcmp(m_record_data, "SEQEND")) {
ImportError("POLYLINE ends with '%s' record rather than 'SEQEND'\n", m_record_data);
repeat_last_record();
}
OnReadPolyline(vertices, flags);
return true;
}
bool CDxfRead::ReadInsert()
{
double center[3];
double scale[3] = {1, 1, 1};
double rotationDegrees = 0.0;
char blockName[1024] = {0};
Setup3DVectorAttribute(10, center);
SetupValueAttribute(41, scale[0]);
SetupValueAttribute(42, scale[1]);
SetupValueAttribute(43, scale[2]);
SetupValueAttribute(50, rotationDegrees);
SetupStringAttribute(2, blockName);
ProcessAllAttributes();
OnReadInsert(center, scale, blockName, rotationDegrees * M_PI / 180);
return (true);
}
bool CDxfRead::ReadDimension()
{
double start[3];
double end[3];
double linePosition[3];
double textPosition[3];
double rotation = 0;
int dimensionType = 0; // This appears to default to zero
// Per documentation:
// 10 is the "dimension line location"
// 11 is the midpoint of the dimension text
// 13 is the start point of the 1st extension line
// 14 is the start point of the 2nd extension line
// 50 is the rotation of the dimension (the direction of the dimension line)
// 52 (if present) is the angle relative to the dimension line for the extension lines; default
// 90 degrees
Setup3DVectorAttribute(13, start); // WCS
Setup3DVectorAttribute(14, end); // WCS
Setup3DVectorAttribute(10, linePosition); // WCS
Setup3DVectorAttribute(11, textPosition); // OCS
SetupValueAttribute(50, rotation);
SetupValueAttribute(70, dimensionType);
ProcessAllAttributes();
dimensionType &= ~0xE0; // Remove flags
switch (dimensionType) {
case 0:
case 1:
OnReadDimension(start, end, linePosition, rotation * M_PI / 180);
break;
default:
UnsupportedFeature("Dimension type '%d'", dimensionType);
break;
}
return (true);
}
bool CDxfRead::ReadUnknownEntity()
{
UnsupportedFeature("Entity type '%s'", m_record_data);
ProcessAllAttributes();
return true;
}
bool CDxfRead::ReadBlockInfo()
{
int blockType = 0;
InitializeAttributes();
// Both 2 and 3 are the block name.
SetupStringAttribute(2, m_block_name);
SetupStringAttribute(3, m_block_name);
SetupValueAttribute(70, blockType);
ProcessAllAttributes();
// Read the entities in the block definition.
// These are processed just like in-drawing entities but the code can
// recognize that we are in the BLOCKS section, and which block we are defining,
// by looking at the result of LayerName()
// Note that the Layer Name in the block entities is ignored even though it
// should be used to resolve BYLAYER attributes and also for placing the entity
// when the block is inserted.
if (blockType & 0x04) {
// Note that this doesn't mean there are not entities in the block. I don't
// know if the external reference can be cached because there are two other bits
// here, 0x10 and 0x20, that seem to handle "resolved" external references.
UnsupportedFeature("External (xref) BLOCK");
}
while (get_next_record() && m_record_type != 0 && strcmp(m_record_data, "ENDBLK")) {
if (blockType & 0x01) {
// It is an anonymous block used to build dimensions, hatches, etc so we don't need it
// and don't want to complaining about unhandled entity types.
while (get_next_record() && m_record_type != 0) {}
repeat_last_record();
}
else if (IgnoreErrors()) {
try {
if (!ReadEntity()) {
return false;
}
}
catch (...) {
}
}
else {
if (!ReadEntity()) {
return false;
}
}
}
return true;
}
void CDxfRead::UnsupportedFeature(const char* format, ...)
{
// Upcoming C++20 std::format might simplify some of this code
va_list args;
std::string formattedMessage;
va_start(args, format);
// Make room in formattedMessage for the formatted text and its terminating null byte
formattedMessage.resize((size_t)vsnprintf(nullptr, 0, format, args) + 1);
va_end(args);
va_start(args, format);
vsprintf(formattedMessage.data(), format, args);
va_end(args);
// Remove the null byte
formattedMessage.pop_back();
// We place these formatted messages in a map, count their occurrences and not their first
// occurrence.
if (m_unsupportedFeaturesNoted[formattedMessage].first++ == 0) {
m_unsupportedFeaturesNoted[formattedMessage].second = m_line;
}
}
bool CDxfRead::get_next_record()
{
if (m_repeat_last_record) {
m_repeat_last_record = false;
return m_not_eof;
}
if ((*m_ifs).eof()) {
m_not_eof = false;
return false;
}
m_ifs->getline(m_record_data, 1024);
++m_line;
if (sscanf(m_record_data, "%d", &m_record_type) != 1) {
ImportError("CDxfRead::get_next_record() Failed to get integer record type from '%s'\n",
m_record_data);
return (false);
}
if ((*m_ifs).eof()) {
return false;
}
m_ifs->getline(m_record_data, 1024);
++m_line;
// Remove any carriage return at the end of m_str which may occur because of inconsistent
// handling of LF vs. CRLF line termination.
size_t len = strlen(m_record_data);
if (len > 0 && m_record_data[len - 1] == '\r') {
m_record_data[len - 1] = '\0';
}
// The code that was here just blindly trimmed leading white space, but if you have, for
// instance, a TEXT entity whose text starts with spaces, or, more plausibly, a long TEXT entity
// where the text is broken into one or more type-3 records with a final type-1 and the break
// happens to be just before a space, this would be wrong.
return true;
}
void CDxfRead::repeat_last_record()
{
m_repeat_last_record = true;
}
bool CDxfRead::ReadUnits()
{
get_next_record(); // Get the value for the variable
int n = 0;
if (sscanf(m_record_data, "%d", &n) == 1) {
m_eUnits = eDxfUnits_t(n);
if (m_eUnits != eUnspecified) {
m_measurement_inch = false; // prioritize INSUNITS over MEASUREMENT variable
}
return (true);
} // End if - then
else {
ImportError("CDxfRead::ReadUnits() Failed to get integer from '%s'\n", m_record_data);
return (false);
}
}
//
// Intercepts for On... calls to derived class
// (These have distinct signatures from the ones they call)
bool CDxfRead::OnReadPolyline(std::list<VertexInfo>& vertices, int flags)
{
if (vertices.size() < 2) {
// TODO: Warning
return true;
}
bool closed = ((flags & 1) != 0);
auto startVertex = vertices.end();
if (closed) {
// If the shape is closed, point at the last vertex. The first stroke drawn will be the
// closure.
--startVertex;
}
for (auto endVertex = vertices.begin(); endVertex != vertices.end(); endVertex++) {
if (startVertex != vertices.end()) {
if (startVertex->bulge != 0.0) {
// Bulge is 1/4 tan(arc angle), positive for CCW arc.
double cot = 0.5 * ((1.0 / startVertex->bulge) - startVertex->bulge);
double cx = ((startVertex->location[0] + endVertex->location[0])
- ((endVertex->location[1] - startVertex->location[1]) * cot))
/ 2.0;
double cy = ((startVertex->location[1] + endVertex->location[1])
+ ((endVertex->location[0] - startVertex->location[0]) * cot))
/ 2.0;
double pc[3] = {cx, cy, (startVertex->location[2] + endVertex->location[2]) / 2.0};
OnReadArc(startVertex->location,
endVertex->location,
pc,
startVertex->bulge >= 0,
false);
}
else {
OnReadLine(startVertex->location, endVertex->location, false);
}
}
startVertex = endVertex;
}
return true;
}
void CDxfRead::OnReadArc(double start_angle,
double end_angle,
double radius,
const double* center,
double z_extrusion_dir,
bool hidden)
{
double s[3] = {0, 0, 0}, e[3] = {0, 0, 0}, temp[3] = {0, 0, 0};
if (z_extrusion_dir == 1.0) {
temp[0] = center[0];
temp[1] = center[1];
temp[2] = center[2];
s[0] = center[0] + radius * cos(start_angle * M_PI / 180);
s[1] = center[1] + radius * sin(start_angle * M_PI / 180);
s[2] = center[2];
e[0] = center[0] + radius * cos(end_angle * M_PI / 180);
e[1] = center[1] + radius * sin(end_angle * M_PI / 180);
e[2] = center[2];
}
else {
temp[0] = -center[0];
temp[1] = center[1];
temp[2] = center[2];
e[0] = -(center[0] + radius * cos(start_angle * M_PI / 180));
e[1] = (center[1] + radius * sin(start_angle * M_PI / 180));
e[2] = center[2];
s[0] = -(center[0] + radius * cos(end_angle * M_PI / 180));
s[1] = (center[1] + radius * sin(end_angle * M_PI / 180));
s[2] = center[2];
}
OnReadArc(s, e, temp, true, hidden);
}
void CDxfRead::OnReadCircle(const double* center, double radius, bool hidden)
{
// OnReadCircle wants a start point, so we pick an arbitrary point on the circumference
double s[3] = {center[0] + radius, center[1], center[2]};
OnReadCircle(s,
center,
false,
hidden); // false to change direction because otherwise the arc length is zero
}
void CDxfRead::OnReadEllipse(const double* center,
const double* m,
double ratio,
double start_angle,
double end_angle)
{
double major_radius = sqrt(m[0] * m[0] + m[1] * m[1] + m[2] * m[2]);
double minor_radius = major_radius * ratio;
// Since we only support 2d stuff, we can calculate the rotation from the major axis x and y
// value only, since z is zero, major_radius is the vector length
double rotation = atan2(m[1] / major_radius, m[0] / major_radius);
OnReadEllipse(center, major_radius, minor_radius, rotation, start_angle, end_angle, true);
}
bool CDxfRead::ReadVersion()
{
static const std::vector<std::string> VersionNames = {
// This table is indexed by eDXFVersion_t - (ROlder+1)
"AC1006",
"AC1009",
"AC1012",
"AC1014",
"AC1015",
"AC1018",
"AC1021",
"AC1024",
"AC1027",
"AC1032"};
assert(VersionNames.size() == RNewer - ROlder - 1);
get_next_record(); // Get the value for the variable
std::vector<std::string>::const_iterator first = VersionNames.cbegin();
std::vector<std::string>::const_iterator last = VersionNames.cend();
std::vector<std::string>::const_iterator found = std::lower_bound(first, last, m_record_data);
if (found == last) {
m_version = RNewer;
}
else if (*found == m_record_data) {
m_version = (eDXFVersion_t)((int)std::distance(first, found) + (ROlder + 1));
}
else if (found == first) {
m_version = ROlder;
}
else {
m_version = RUnknown;
}
return ResolveEncoding();
}
bool CDxfRead::ReadDWGCodePage()
{
get_next_record(); // Get the value for the variable
assert(m_CodePage == nullptr); // If not, we have found two DWGCODEPAGE variables or DoRead was
// called twice on the same CDxfRead object.
m_CodePage = new std::string(m_record_data);
return ResolveEncoding();
}
bool CDxfRead::ResolveEncoding()
{
if (m_encoding != nullptr) {
delete m_encoding;
m_encoding = nullptr;
}
if (m_version >= R2007) { // Note this does not include RUnknown, but does include RLater
m_encoding = new std::string("utf_8");
stringToUTF8 = &CDxfRead::UTF8ToUTF8;
}
else if (m_CodePage == nullptr) {
// cp1252
m_encoding = new std::string("cp1252");
stringToUTF8 = &CDxfRead::GeneralToUTF8;
}
else {
// Codepage names may be of the form "ansi_1252" which we map to "cp1252" but we don't map
// "ansi_x3xxxx" (which happens to mean "ascii")
// Also some DXF files have the codepage name in uppercase so we lowercase it.
std::string* p = new std::string(*m_CodePage);
std::transform(p->begin(), p->end(), p->begin(), ::tolower);
if (strncmp(p->c_str(), "ansi_", 5) == 0 && strncmp(p->c_str(), "ansi_x3", 7) != 0) {
p->replace(0, 5, "cp");
}
m_encoding = p;
// At this point we want to recognize synonyms for "utf_8" and use the custom decoder
// function. This is because this is one of the common cases and our decoder function is a
// fast no-op. We don't actually use the decoder function we get from PyCodec_Decoder
// because to call it we have to convert the (char *) text into a 'bytes' object first so we
// can pass it to the function using PyObject_Callxxx(), getting the PYObject containing the
// Python string, which we then decode back to UTF-8. It is simpler to call
// PyUnicode_DecodeXxxx which takes a (const char *) and is just a direct c++ callable.
Base::PyGILStateLocker lock;
PyObject* pyDecoder = PyCodec_Decoder(m_encoding->c_str());
if (pyDecoder == nullptr) {
return false; // A key error exception will have been placed.
}
PyObject* pyUTF8Decoder = PyCodec_Decoder("utf_8");
assert(pyUTF8Decoder != nullptr);
if (pyDecoder == pyUTF8Decoder) {
stringToUTF8 = &CDxfRead::UTF8ToUTF8;
}
else {
stringToUTF8 = &CDxfRead::GeneralToUTF8;
}
Py_DECREF(pyDecoder);
Py_DECREF(pyUTF8Decoder);
}
return m_encoding != nullptr;
}
const char* CDxfRead::UTF8ToUTF8(const char* encoded) const
{
return encoded;
}
const char* CDxfRead::GeneralToUTF8(const char* encoded) const
{
Base::PyGILStateLocker lock;
PyObject* decoded = PyUnicode_Decode(encoded, strlen(encoded), m_encoding->c_str(), "strict");
if (decoded == nullptr) {
return nullptr;
}
Py_ssize_t len;
const char* converted = PyUnicode_AsUTF8AndSize(decoded, &len);
char* result = nullptr;
if (converted != nullptr) {
// converted only has lifetime of decoded so we must save a copy.
result = (char*)malloc(len + 1);
if (result == nullptr) {
PyErr_SetString(PyExc_MemoryError, "Out of memory");
}
else {
memcpy(result, converted, len + 1);
}
}
Py_DECREF(decoded);
return result;
}
void CDxfRead::DoRead(const bool ignore_errors /* = false */)
{
m_ignore_errors = ignore_errors;
if (m_fail) {
return;
}
// Loop reading and identifying the sections.
while (get_next_record()) {
if (m_record_type != 0) {
ImportError("Found type %d record when expecting start of a SECTION or EOF\n",
m_record_type);
continue;
}
if (!strcmp(m_record_data, "EOF")) { // TODO: Check for drivel beyond EOF record
break;
}
if (strcmp(m_record_data, "SECTION")) {
ImportError("Found %s record when expecting start of a SECTION\n", m_record_data);
continue;
}
if (!get_next_record()) {
ImportError("Unclosed SECTION at end of file\n");
return;
}
if (m_record_type != 2) {
ImportError("Ignored SECTION with no name record\n");
if (!ReadIgnoredSection()) {
return;
}
}
else if (!strcmp(m_record_data, "HEADER")) {
if (!ReadHeaderSection()) {
return;
}
}
else if (!strcmp(m_record_data, "TABLES")) {
if (!ReadTablesSection()) {
return;
}
}
else if (!strcmp(m_record_data, "BLOCKS")) {
if (!ReadBlocksSection()) {
return;
}
}
else if (!strcmp(m_record_data, "ENTITIES")) {
if (!ReadEntitiesSection()) {
return;
}
}
else {
if (!ReadIgnoredSection()) {
return;
}
}
}
AddGraphics();
// FLush out any unsupported features messages
auto i = m_unsupportedFeaturesNoted.begin();
if (i != m_unsupportedFeaturesNoted.end()) {
ImportError("Unsupported DXF features:\n");
do {
ImportError("%s: %d time(s) first at line %d\n",
i->first,
i->second.first,
i->second.second);
} while (++i != m_unsupportedFeaturesNoted.end());
}
}
bool CDxfRead::ReadEntity()
{
InitializeCommonEntityAttributes();
// The entity record is already the current record and is already checked as a type 0 record
if (!strcmp(m_record_data, "LINE")) {
return ReadLine();
}
else if (!strcmp(m_record_data, "ARC")) {
return ReadArc();
}
else if (!strcmp(m_record_data, "CIRCLE")) {
return ReadCircle();
}
else if (!strcmp(m_record_data, "MTEXT")) {
return ReadText();
}
else if (!strcmp(m_record_data, "TEXT")) {
return ReadText();
}
else if (!strcmp(m_record_data, "ELLIPSE")) {
return ReadEllipse();
}
else if (!strcmp(m_record_data, "SPLINE")) {
return ReadSpline();
}
else if (!strcmp(m_record_data, "LWPOLYLINE")) {
return ReadLwPolyLine();
}
else if (!strcmp(m_record_data, "POLYLINE")) {
return ReadPolyLine();
}
else if (!strcmp(m_record_data, "POINT")) {
return ReadPoint();
}
else if (!strcmp(m_record_data, "INSERT")) {
return ReadInsert();
}
else if (!strcmp(m_record_data, "DIMENSION")) {
return ReadDimension();
}
else {
return ReadUnknownEntity();
}
}
bool CDxfRead::ReadHeaderSection()
{
// Read to the next ENDSEC record marking the end of the section.
// This section contains variables, most of which we ignore. Each one is a type-9 record giving
// the variable name, followed by a single record giving the value; the record type depends on
// the variable's data type.
while (get_next_record()) {
if (m_record_type == 0 && !strcmp(m_record_data, "ENDSEC")) {
return true;
}
else if (m_record_type != 9) {
continue; // Quietly ignore unknown record types
}
if (!strcmp(m_record_data, "$INSUNITS")) {
if (!ReadUnits()) {
return false;
}
}
else if (!strcmp(m_record_data, "$MEASUREMENT")) {
get_next_record();
int n = 1;
if (sscanf(m_record_data, "%d", &n) == 1) {
if (n == 0) {
m_measurement_inch = true;
}
}
}
else if (!strcmp(m_record_data, "$ACADVER")) {
if (!ReadVersion()) {
return false;
}
}
else if (!strcmp(m_record_data, "$DWGCODEPAGE")) {
if (!ReadDWGCodePage()) {
return false;
}
}
else {
// any other variable, skip its value
if (!get_next_record()) {
return false;
}
}
}
return false;
}
bool CDxfRead::ReadTablesSection()
{
// Read to the next ENDSEC record marking the end of the section.
// This section contains various tables, many of which we ignore. Each one is a type-0 TABLE
// record followed by a type-2 (name) record giving the table name, followed by the table
// contents. Each set of contents is terminates by the next type-0 TABLE or ENDSEC directive.
while (get_next_record()) {
if (m_record_type != 0) {
continue; // Ignore any non-type-0 contents in the section.
}
if (!strcmp(m_record_data, "ENDSEC")) {
return true;
}
if (strcmp(m_record_data, "TABLE")) {
continue; // Ignore any type-0 non-TABLE contents in the section
}
get_next_record();
if (m_record_type != 2) {
ImportError("Found unexpected type %d record instead of table name\n", m_record_type);
}
else if (!strcmp(m_record_data, "LAYER")) {
if (!ReadLayerTable()) {
return false;
}
}
else {
if (!ReadIgnoredTable()) {
return false;
}
}
}
return false;
}
bool CDxfRead::ReadIgnoredSection()
{
// Read to the next ENDSEC record marking the end of the section.
while (get_next_record()) {
if (m_record_type == 0 && !strcmp(m_record_data, "ENDSEC")) {
return true;
}
}
return false;
}
bool CDxfRead::ReadBlocksSection()
{
// Read to the next ENDSEC record marking the end of the section.
// Within this section we should find type-0 BLOCK groups
while (get_next_record()) {
if (m_record_type != 0) {
continue; // quietly ignore non-type-0 records;
}
if (!strcmp(m_record_data, "ENDSEC")) {
// End of section
return true;
}
if (strcmp(m_record_data, "BLOCK")) {
continue; // quietly ignore non-BLOCK records
}
if (!ReadBlockInfo()) {
ImportError("CDxfRead::DoRead() Failed to read block\n");
}
m_block_name[0] = '\0';
}
return false;
}
bool CDxfRead::ReadEntitiesSection()
{
// Read to the next ENDSEC record marking the end of the section.
// Within this section we should find type-0 BLOCK groups
while (get_next_record()) {
if (m_record_type != 0) {
continue; // quietly ignore non-type-0 records;
}
if (!strcmp(m_record_data, "ENDSEC")) {
// End of section
return true;
}
if (IgnoreErrors()) {
try {
if (!ReadEntity()) {
return false;
}
}
catch (...) {
}
}
else {
if (!ReadEntity()) {
return false;
}
}
}
return false;
}
bool CDxfRead::ReadLayer()
{
std::string layername;
ColorIndex_t layerColor = 0;
int layerFlags = 0;
InitializeAttributes();
SetupStringAttribute(2, layername);
SetupValueAttribute(62, layerColor);
SetupValueAttribute(70, layerFlags);
ProcessAllAttributes();
if (layername.empty()) {
ImportError("CDxfRead::ReadLayer() - no layer name\n");
return false;
}
if (layerFlags & 0x01) {
// Frozen layers are implicitly hidden which we don't do yet.
// TODO: Should have an import option to omit frozen layers.
UnsupportedFeature("Frozen layers");
}
if (layerColor < 0) {
UnsupportedFeature("Hidden layers");
layerColor = -layerColor;
}
m_layer_ColorIndex_map[layername] = layerColor;
return true;
}
bool CDxfRead::ReadLayerTable()
{
// Read to the next TABLE record indicating another table in the TABLES section, or to the
// ENDSEC record marking the end of the TABLES section. This table contains a series of type-0
// LAYER groups
while (get_next_record()) {
if (m_record_type != 0) {
continue; // quietly ignore non-type-0 records; this table has some preamble
}
if (!strcmp(m_record_data, "TABLE") || !strcmp(m_record_data, "ENDSEC")) {
// End of table
repeat_last_record();
return true;
}
if (strcmp(m_record_data, "LAYER")) {
continue; // quietly ignore non-LAYER records
}
if (!ReadLayer()) {
ImportError("CDxfRead::DoRead() Failed to read layer\n");
}
continue;
}
return false;
}
bool CDxfRead::ReadIgnoredTable()
{
// Read to the next TABLE record indicating another table in the TABLES section, or to the
// ENDSEC record marking the end of the TABLES section.
while (get_next_record()) {
if (m_record_type == 0
&& (!strcmp(m_record_data, "TABLE") || !strcmp(m_record_data, "ENDSEC"))) {
repeat_last_record();
return true;
}
}
return false;
}
std::string CDxfRead::LayerName() const
{
std::string result;
if (strlen(m_block_name) > 0) {
result.append("BLOCKS ");
result.append(m_block_name);
result.append(" ");
}
else if (strlen(m_layer_name) > 0) {
result.append("ENTITIES ");
result.append(m_layer_name);
}
return (result);
}
inline static double level(int distance, double blackLevel)
{
// Distance is the number of 24ths around the color wheel between the desired hue and
// the primary hue in question. Coming in it is a ordinate difference and so can be negative
// so the first thing we do is take its absolute value.
if (distance < 0) {
distance = -distance;
}
// If the distance is greater than 12, it is measuring the long way around the color wheel so we
// reduce it to measuring along the short way instead
if (distance > 12) {
distance = 24 - distance;
}
if (distance <= 4) {
// A distance 4 or less givs full intensity of the primary color
return 1.0;
}
else if (distance < 8) {
// Between 4 and 8 gives a blend of the full primary and the black level
return ((8 - distance) + blackLevel * (distance - 4)) / 4;
}
else {
// 8 and beyond yield the black level
return blackLevel;
}
}
inline static App::Color wheel(int hue, double blackLevel, double multiplier = 1.0)
{
return App::Color(level(hue - 0, blackLevel) * multiplier,
level(hue - 8, blackLevel) * multiplier,
level(hue - 16, blackLevel) * multiplier);
}
App::Color CDxfRead::ObjectColor() const
{
int index = m_ColorIndex;
if (index == ColorBylayer) // if color = layer color, replace by color from layer
{
auto key = std::string(m_layer_name);
index = m_layer_ColorIndex_map.count(key) > 0 ? m_layer_ColorIndex_map.at(key) : 0;
}
// TODO: If it is ColorByBlock we need to use the color of the INSERT entity.
// This is tricky because a block can itself contain INSERT entities and we don't currently
// record the required information. IIRC INSERT in a block will do something strange like
// try to insert the block into the main drawing instead of into the block being defined.
// The first 7 colors (1-7) have ad hoc names red, yellow, green, cyan, blue, magenta, and
// black. 8, 9, 250-254 are lightening shades of gray. These are rendered by the app in a manner
// to contrast with the background color.
// For others, (color/10) determines the hue around the
// color circle, with even numbers fading to black on the tens digit,
// and odd numberd being blended with AA and again fading to black.
// The fade is FF BD 81 68 4F (100%, 74%, 50%, 40%, 30%) indexed by (index/2)%5
// The AA fades as AA 7E 56 45 35 which is almost the exact same percentages.
// For hue, (index-10)/10 : 0 is ff0000, and each step linearly adds green until 4 is pure
// yellow ffff00, then red starts to fade... until but not including 24 which is back to ff0000.
App::Color result = App::Color();
if (index == 0) {
// Technically, 0 is BYBLOCK and not a real color, but all that means is that an object in a
// block cannot specifically ask to be black. These colors are all contrasted to the
// background so there is no objective black colour, through 255 is an objective white.
result = App::Color();
}
else if (index < 7) {
result = wheel((index - 1) * 4, 0x00);
}
else if (index == 7) {
result = App::Color(1, 1, 1);
}
else if (index == 8) {
result = App::Color(0.5, 0.5, 0.5);
}
else if (index == 9) {
result = App::Color(0.75, 0.75, 0.75);
}
else if (index >= 250) {
int brightness = (index - 250 + (255 - index) * 0.2) / 5;
result = App::Color(brightness, brightness, brightness);
}
else {
int fade = (index / 2) % 5;
static double fades[5] = {1.00, 0.74, 0.50, 0.40, 0.30};
return wheel(index / 10 - 1, (index & 1) ? 0.69 : 0, fades[fade]);
}
// TODO: These colors are modified to contrast with the background. In the original program
// this is just a rendering feature, but FreeCAD does not support this so the user has the
// option of modifying the colors to contrast with the background at time of import.
return result;
}
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