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[TD]migrate DrawingWB projection functions to TechDrawWB

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This commit is contained in:
Wanderer Fan
2022-01-27 15:06:10 -05:00
committed by WandererFan
parent 81fa1d6a27
commit aa6f8c4b14
18 changed files with 2771 additions and 5 deletions
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4
src/Mod/TechDraw/App/AppTechDraw.cpp
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@@ -65,6 +65,8 @@
#include "CosmeticExtension.h"
#include "FeatureProjection.h"
namespace TechDraw {
extern PyObject* initModule();
}
@@ -130,6 +132,8 @@ PyMOD_INIT_FUNC(TechDraw)
TechDraw::CosmeticExtension ::init();
TechDraw::CosmeticExtensionPython::init();
TechDraw::FeatureProjection::init();
// are these python init calls required? some modules don't have them
// Python Types
TechDraw::DrawPagePython ::init();

251
src/Mod/TechDraw/App/AppTechDrawPy.cpp
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@@ -34,9 +34,12 @@
#include <gp_Vec.hxx>
#include <BRep_Builder.hxx>
#include <BRepBuilderAPI_Transform.hxx>
#endif
#include <Mod/TechDraw/TechDrawGlobal.h>
#include <boost/regex.hpp>
#include <CXX/Extensions.hxx>
#include <CXX/Objects.hxx>
@@ -58,7 +61,6 @@
#include <Mod/Part/App/TopoShapeCompoundPy.h>
#include <Mod/Part/App/OCCError.h>
#include <Mod/Drawing/App/DrawingExport.h>
#include <Mod/Import/App/ImpExpDxf.h>
#include "DrawProjectSplit.h"
@@ -78,6 +80,10 @@
#include "HatchLine.h"
#include "DrawGeomHatch.h"
#include "TechDrawExport.h"
#include "ProjectionAlgos.h"
namespace TechDraw {
//module level static C++ functions go here
}
@@ -90,8 +96,39 @@ using Part::TopoShapeWirePy;
using Part::TopoShapeCompoundPy;
using Import::ImpExpDxfWrite;
using TechDraw::ProjectionAlgos;
using namespace std;
namespace TechDraw {
/** Copies a Python dictionary of Python strings to a C++ container.
*
* After the function call, the key-value pairs of the Python
* dictionary are copied into the target buffer as C++ pairs
* (pair<string, string>).
*
* @param sourceRange is a Python dictionary (Py::Dict). Both, the
* keys and the values must be Python strings.
*
* @param targetIt refers to where the data should be inserted. Must
* be of concept output iterator.
*/
template<typename OutputIt>
void copy(Py::Dict sourceRange, OutputIt targetIt)
{
string key;
string value;
for (auto keyPy : sourceRange.keys()) {
key = Py::String(keyPy);
value = Py::String(sourceRange[keyPy]);
*targetIt = {key, value};
++targetIt;
}
}
class Module : public Py::ExtensionModule<Module>
{
public:
@@ -133,6 +170,26 @@ public:
add_varargs_method("makeGeomHatch",&Module::makeGeomHatch,
"makeGeomHatch(face, [patScale], [patName], [patFile]) -- draw a geom hatch on a given face, using optionally the given scale (default 1) and a given pattern name (ex. Diamond) and .pat file (the default pattern name and/or .pat files set in preferences are used if none are given). Returns a Part compound shape."
);
add_varargs_method("project",&Module::project,
"[visiblyG0,visiblyG1,hiddenG0,hiddenG1] = project(TopoShape[,App.Vector Direction, string type])\n"
" -- Project a shape and return the visible/invisible parts of it."
);
add_varargs_method("projectEx",&Module::projectEx,
"[V,V1,VN,VO,VI,H,H1,HN,HO,HI] = projectEx(TopoShape[,App.Vector Direction, string type])\n"
" -- Project a shape and return the all parts of it."
);
add_keyword_method("projectToSVG",&Module::projectToSVG,
"string = projectToSVG(TopoShape[, App.Vector direction, string type, float tolerance, dict vStyle, dict v0Style, dict v1Style, dict hStyle, dict h0Style, dict h1Style])\n"
" -- Project a shape and return the SVG representation as string."
);
add_varargs_method("projectToDXF",&Module::projectToDXF,
"string = projectToDXF(TopoShape[,App.Vector Direction, string type])\n"
" -- Project a shape and return the DXF representation as string."
);
add_varargs_method("removeSvgTags",&Module::removeSvgTags,
"string = removeSvgTags(string) -- Removes the opening and closing svg tags\n"
"and other metatags from a svg code, making it embeddable"
);
initialize("This is a module for making drawings"); // register with Python
}
virtual ~Module() {}
@@ -362,7 +419,7 @@ private:
try {
App::DocumentObject* obj = 0;
TechDraw::DrawViewPart* dvp = 0;
Drawing::DXFOutput dxfOut;
TechDraw::DXFOutput dxfOut;
std::string dxfText;
std::stringstream ss;
if (PyObject_TypeCheck(viewObj, &(TechDraw::DrawViewPartPy::Type))) {
@@ -419,7 +476,7 @@ private:
try {
App::DocumentObject* obj = 0;
TechDraw::DrawViewPart* dvp = 0;
Drawing::SVGOutput svgOut;
TechDraw::SVGOutput svgOut;
std::string svgText;
std::stringstream ss;
if (PyObject_TypeCheck(viewObj, &(TechDraw::DrawViewPartPy::Type))) {
@@ -965,6 +1022,192 @@ private:
return Py::None();
}
Py::Object project(const Py::Tuple& args)
{
PyObject *pcObjShape;
PyObject *pcObjDir=0;
if (!PyArg_ParseTuple(args.ptr(), "O!|O!",
&(Part::TopoShapePy::Type), &pcObjShape,
&(Base::VectorPy::Type), &pcObjDir))
throw Py::Exception();
Part::TopoShapePy* pShape = static_cast<Part::TopoShapePy*>(pcObjShape);
Base::Vector3d Vector(0,0,1);
if (pcObjDir)
Vector = *static_cast<Base::VectorPy*>(pcObjDir)->getVectorPtr();
ProjectionAlgos Alg(pShape->getTopoShapePtr()->getShape(),Vector);
Py::List list;
list.append(Py::Object(new Part::TopoShapePy(new Part::TopoShape(Alg.V)) , true));
list.append(Py::Object(new Part::TopoShapePy(new Part::TopoShape(Alg.V1)), true));
list.append(Py::Object(new Part::TopoShapePy(new Part::TopoShape(Alg.H)) , true));
list.append(Py::Object(new Part::TopoShapePy(new Part::TopoShape(Alg.H1)), true));
return list;
}
Py::Object projectEx(const Py::Tuple& args)
{
PyObject *pcObjShape;
PyObject *pcObjDir=0;
if (!PyArg_ParseTuple(args.ptr(), "O!|O!",
&(TopoShapePy::Type), &pcObjShape,
&(Base::VectorPy::Type), &pcObjDir))
throw Py::Exception();
TopoShapePy* pShape = static_cast<TopoShapePy*>(pcObjShape);
Base::Vector3d Vector(0,0,1);
if (pcObjDir)
Vector = *static_cast<Base::VectorPy*>(pcObjDir)->getVectorPtr();
ProjectionAlgos Alg(pShape->getTopoShapePtr()->getShape(),Vector);
Py::List list;
list.append(Py::Object(new TopoShapePy(new TopoShape(Alg.V)) , true));
list.append(Py::Object(new TopoShapePy(new TopoShape(Alg.V1)), true));
list.append(Py::Object(new TopoShapePy(new TopoShape(Alg.VN)), true));
list.append(Py::Object(new TopoShapePy(new TopoShape(Alg.VO)), true));
list.append(Py::Object(new TopoShapePy(new TopoShape(Alg.VI)), true));
list.append(Py::Object(new TopoShapePy(new TopoShape(Alg.H)) , true));
list.append(Py::Object(new TopoShapePy(new TopoShape(Alg.H1)), true));
list.append(Py::Object(new TopoShapePy(new TopoShape(Alg.HN)), true));
list.append(Py::Object(new TopoShapePy(new TopoShape(Alg.HO)), true));
list.append(Py::Object(new TopoShapePy(new TopoShape(Alg.HI)), true));
return list;
}
Py::Object projectToSVG(const Py::Tuple& args, const Py::Dict& keys)
{
static char* argNames[] = {"topoShape", "direction", "type", "tolerance", "vStyle", "v0Style", "v1Style", "hStyle", "h0Style", "h1Style", NULL};
PyObject *pcObjShape = 0;
PyObject *pcObjDir = 0;
const char *extractionTypePy = 0;
ProjectionAlgos::ExtractionType extractionType = ProjectionAlgos::Plain;
const float tol = 0.1f;
PyObject* vStylePy = 0;
ProjectionAlgos::XmlAttributes vStyle;
PyObject* v0StylePy = 0;
ProjectionAlgos::XmlAttributes v0Style;
PyObject* v1StylePy = 0;
ProjectionAlgos::XmlAttributes v1Style;
PyObject* hStylePy = 0;
ProjectionAlgos::XmlAttributes hStyle;
PyObject* h0StylePy = 0;
ProjectionAlgos::XmlAttributes h0Style;
PyObject* h1StylePy = 0;
ProjectionAlgos::XmlAttributes h1Style;
// Get the arguments
if (!PyArg_ParseTupleAndKeywords(
args.ptr(), keys.ptr(),
"O!|O!sfOOOOOO",
argNames,
&(TopoShapePy::Type), &pcObjShape,
&(Base::VectorPy::Type), &pcObjDir,
&extractionTypePy, &tol,
&vStylePy, &v0StylePy, &v1StylePy,
&hStylePy, &h0StylePy, &h1StylePy))
throw Py::Exception();
// Convert all arguments into the right format
TopoShapePy* pShape = static_cast<TopoShapePy*>(pcObjShape);
Base::Vector3d directionVector(0,0,1);
if (pcObjDir)
directionVector = static_cast<Base::VectorPy*>(pcObjDir)->value();
if (extractionTypePy && std::string(extractionTypePy) == "ShowHiddenLines")
extractionType = ProjectionAlgos::WithHidden;
if (vStylePy)
copy(Py::Dict(vStylePy), inserter(vStyle, vStyle.begin()));
if (v0StylePy)
copy(Py::Dict(v0StylePy), inserter(v0Style, v0Style.begin()));
if (v1StylePy)
copy(Py::Dict(v1StylePy), inserter(v1Style, v1Style.begin()));
if (hStylePy)
copy(Py::Dict(hStylePy), inserter(hStyle, hStyle.begin()));
if (h0StylePy)
copy(Py::Dict(h0StylePy), inserter(h0Style, h0Style.begin()));
if (h1StylePy)
copy(Py::Dict(h1StylePy), inserter(h1Style, h1Style.begin()));
// Execute the SVG generation
ProjectionAlgos Alg(pShape->getTopoShapePtr()->getShape(),
directionVector);
Py::String result(Alg.getSVG(extractionType, tol,
vStyle, v0Style, v1Style,
hStyle, h0Style, h1Style));
return result;
}
Py::Object projectToDXF(const Py::Tuple& args)
{
PyObject *pcObjShape;
PyObject *pcObjDir=0;
const char *type=0;
float scale=1.0f;
float tol=0.1f;
if (!PyArg_ParseTuple(args.ptr(), "O!|O!sff",
&(TopoShapePy::Type), &pcObjShape,
&(Base::VectorPy::Type), &pcObjDir, &type, &scale, &tol))
throw Py::Exception();
TopoShapePy* pShape = static_cast<TopoShapePy*>(pcObjShape);
Base::Vector3d Vector(0,0,1);
if (pcObjDir)
Vector = static_cast<Base::VectorPy*>(pcObjDir)->value();
ProjectionAlgos Alg(pShape->getTopoShapePtr()->getShape(),Vector);
bool hidden = false;
if (type && std::string(type) == "ShowHiddenLines")
hidden = true;
Py::String result(Alg.getDXF(hidden?ProjectionAlgos::WithHidden:ProjectionAlgos::Plain, scale, tol));
return result;
}
Py::Object removeSvgTags(const Py::Tuple& args)
{
const char* svgcode;
if (!PyArg_ParseTuple(args.ptr(), "s",&svgcode))
throw Py::Exception();
std::string svg(svgcode);
std::string empty = "";
std::string endline = "--endOfLine--";
std::string linebreak = "\\n";
// removing linebreaks for regex to work
boost::regex e1 ("\\n");
svg = boost::regex_replace(svg, e1, endline);
// removing starting xml definition
boost::regex e2 ("<\\?xml.*?\\?>");
svg = boost::regex_replace(svg, e2, empty);
// removing starting svg tag
boost::regex e3 ("<svg.*?>");
svg = boost::regex_replace(svg, e3, empty);
// removing sodipodi tags -- DANGEROUS, some sodipodi tags are single, better leave it
//boost::regex e4 ("<sodipodi.*?>");
//svg = boost::regex_replace(svg, e4, empty);
// removing metadata tags
boost::regex e5 ("<metadata.*?</metadata>");
svg = boost::regex_replace(svg, e5, empty);
// removing closing svg tags
boost::regex e6 ("</svg>");
svg = boost::regex_replace(svg, e6, empty);
// restoring linebreaks
boost::regex e7 ("--endOfLine--");
svg = boost::regex_replace(svg, e7, linebreak);
Py::String result(svg);
return result;
}
};

6
src/Mod/TechDraw/App/CMakeLists.txt
View File

@@ -132,6 +132,8 @@ SET(Draw_SRCS
DrawTileWeld.h
DrawWeldSymbol.cpp
DrawWeldSymbol.h
FeatureProjection.cpp
FeatureProjection.h
)
SET(TechDraw_SRCS
@@ -157,6 +159,10 @@ SET(TechDraw_SRCS
ArrowPropEnum.h
Preferences.cpp
Preferences.h
TechDrawExport.cpp
TechDrawExport.h
ProjectionAlgos.cpp
ProjectionAlgos.h
)
SET(Geometry_SRCS

116
src/Mod/TechDraw/App/FeatureProjection.cpp Normal file
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@@ -0,0 +1,116 @@
/***************************************************************************
* Copyright (c) 2009 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
//this file originally part of TechDraw workbench
//migrated to TechDraw workbench 2022-01-26 by Wandererfan
#include "PreCompiled.h"
#ifndef _PreComp_
# include <sstream>
# include <BRep_Builder.hxx>
# include <Standard_Failure.hxx>
# include <TopoDS_Compound.hxx>
#endif
#include <Base/Writer.h>
#include <Base/Reader.h>
#include <Base/Exception.h>
#include <Base/FileInfo.h>
#include "FeatureProjection.h"
#include "ProjectionAlgos.h"
using namespace TechDraw;
PROPERTY_SOURCE(TechDraw::FeatureProjection, Part::Feature)
FeatureProjection::FeatureProjection()
{
static const char *group = "Projection";
ADD_PROPERTY_TYPE(Source ,(0),group,App::Prop_None,"Shape to project");
ADD_PROPERTY_TYPE(Direction ,(Base::Vector3d(0,0,1)),group,App::Prop_None,"Projection direction");
ADD_PROPERTY_TYPE(VCompound ,(true),group,App::Prop_None,"Projection parameter");
ADD_PROPERTY_TYPE(Rg1LineVCompound ,(true),group,App::Prop_None,"Projection parameter");
ADD_PROPERTY_TYPE(RgNLineVCompound ,(true),group,App::Prop_None,"Projection parameter");
ADD_PROPERTY_TYPE(OutLineVCompound ,(true),group,App::Prop_None,"Projection parameter");
ADD_PROPERTY_TYPE(IsoLineVCompound ,(true),group,App::Prop_None,"Projection parameter");
ADD_PROPERTY_TYPE(HCompound ,(true),group,App::Prop_None,"Projection parameter");
ADD_PROPERTY_TYPE(Rg1LineHCompound ,(true),group,App::Prop_None,"Projection parameter");
ADD_PROPERTY_TYPE(RgNLineHCompound ,(true),group,App::Prop_None,"Projection parameter");
ADD_PROPERTY_TYPE(OutLineHCompound ,(true),group,App::Prop_None,"Projection parameter");
ADD_PROPERTY_TYPE(IsoLineHCompound ,(true),group,App::Prop_None,"Projection parameter");
}
FeatureProjection::~FeatureProjection()
{
}
App::DocumentObjectExecReturn *FeatureProjection::execute(void)
{
App::DocumentObject* link = Source.getValue();
if (!link)
return new App::DocumentObjectExecReturn("No object linked");
if (!link->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
return new App::DocumentObjectExecReturn("Linked object is not a Part object");
const TopoDS_Shape& shape = static_cast<Part::Feature*>(link)->Shape.getShape().getShape();
if (shape.IsNull())
return new App::DocumentObjectExecReturn("Linked shape object is empty");
try {
const Base::Vector3d& dir = Direction.getValue();
TechDraw::ProjectionAlgos alg(shape, dir);
TopoDS_Compound comp;
BRep_Builder builder;
builder.MakeCompound(comp);
if (!alg.V.IsNull() && VCompound.getValue())
builder.Add(comp, alg.V);
if (!alg.V1.IsNull() && Rg1LineVCompound.getValue())
builder.Add(comp, alg.V1);
if (!alg.VN.IsNull() && RgNLineVCompound.getValue())
builder.Add(comp, alg.VN);
if (!alg.VO.IsNull() && OutLineVCompound.getValue())
builder.Add(comp, alg.VO);
if (!alg.VI.IsNull() && IsoLineVCompound.getValue())
builder.Add(comp, alg.VI);
if (!alg.H.IsNull() && HCompound.getValue())
builder.Add(comp, alg.H);
if (!alg.H1.IsNull() && Rg1LineHCompound.getValue())
builder.Add(comp, alg.H1);
if (!alg.HN.IsNull() && RgNLineHCompound.getValue())
builder.Add(comp, alg.HN);
if (!alg.HO.IsNull() && OutLineHCompound.getValue())
builder.Add(comp, alg.HO);
if (!alg.HI.IsNull() && IsoLineHCompound.getValue())
builder.Add(comp, alg.HI);
Shape.setValue(comp);
return App::DocumentObject::StdReturn;
}
catch (Standard_Failure& e) {
return new App::DocumentObjectExecReturn(e.GetMessageString());
}
}

75
src/Mod/TechDraw/App/FeatureProjection.h Normal file
View File

@@ -0,0 +1,75 @@
/***************************************************************************
* Copyright (c) 2009 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
//this file originally part of TechDraw workbench
//migrated to TechDraw workbench 2022-01-26 by Wandererfan
#ifndef TECHDRAW_FEATUREPROJECTION
#define TECHDRAW_FEATUREPROJECTION
#include <App/DocumentObject.h>
#include <App/PropertyStandard.h>
#include <App/PropertyGeo.h>
#include <Mod/Part/App/PartFeature.h>
namespace TechDraw
{
/** Base class of all View Features in the drawing module
*/
class TechDrawExport FeatureProjection : public Part::Feature
{
PROPERTY_HEADER(TechDraw::FeatureProjection);
public:
/// Constructor
FeatureProjection();
virtual ~FeatureProjection();
App::PropertyLink Source;
App::PropertyVector Direction;
App::PropertyBool VCompound;
App::PropertyBool Rg1LineVCompound;
App::PropertyBool RgNLineVCompound;
App::PropertyBool OutLineVCompound;
App::PropertyBool IsoLineVCompound;
App::PropertyBool HCompound;
App::PropertyBool Rg1LineHCompound;
App::PropertyBool RgNLineHCompound;
App::PropertyBool OutLineHCompound;
App::PropertyBool IsoLineHCompound;
/** @name methods override feature */
//@{
/// recalculate the Feature
virtual App::DocumentObjectExecReturn *execute(void);
//@}
};
} //namespace TechDraw
#endif // TECHDRAW_FEATUREPROJECTION

290
src/Mod/TechDraw/App/ProjectionAlgos.cpp Normal file
View File

@@ -0,0 +1,290 @@
/***************************************************************************
* Copyright (c) Jürgen Riegel (juergen.riegel@web.de) 2002 *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
//this file originally part of TechDraw workbench
//migrated to TechDraw workbench 2022-01-26 by Wandererfan
#include "PreCompiled.h"
#ifndef _PreComp_
# include <sstream>
# include <BRepAdaptor_Curve.hxx>
# include <Geom_Circle.hxx>
# include <gp_Circ.hxx>
# include <gp_Elips.hxx>
#endif
#include <Bnd_Box.hxx>
#include <BRepBndLib.hxx>
#include <BRepBuilderAPI_Transform.hxx>
#include <HLRBRep_Algo.hxx>
#include <TopoDS_Shape.hxx>
#include <HLRTopoBRep_OutLiner.hxx>
#include <HLRAlgo_Projector.hxx>
#include <HLRBRep_ShapeBounds.hxx>
#include <HLRBRep_HLRToShape.hxx>
#include <gp_Ax2.hxx>
#include <gp_Pnt.hxx>
#include <gp_Dir.hxx>
#include <gp_Vec.hxx>
#include <Poly_Polygon3D.hxx>
#include <Poly_Triangulation.hxx>
#include <Poly_PolygonOnTriangulation.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_IndexedMapOfShape.hxx>
#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
#include <TopTools_ListOfShape.hxx>
#include <TColgp_Array1OfPnt2d.hxx>
#include <BRep_Tool.hxx>
#include <BRepMesh_IncrementalMesh.hxx>
#include <BRepLib.hxx>
#include <BRepAdaptor_CompCurve.hxx>
#include <Approx_Curve3d.hxx>
#include <Geom_BSplineCurve.hxx>
#include <Geom_BezierCurve.hxx>
#include <GeomConvert_BSplineCurveToBezierCurve.hxx>
#include <GeomConvert_BSplineCurveKnotSplitting.hxx>
#include <Geom2d_BSplineCurve.hxx>
#include <Base/Exception.h>
#include <Base/FileInfo.h>
#include <Base/Tools.h>
#include <Mod/Part/App/PartFeature.h>
#include "ProjectionAlgos.h"
#include "TechDrawExport.h"
using namespace TechDraw;
using namespace std;
//===========================================================================
// ProjectionAlgos
//===========================================================================
ProjectionAlgos::ProjectionAlgos(const TopoDS_Shape &Input, const Base::Vector3d &Dir)
: Input(Input), Direction(Dir)
{
execute();
}
ProjectionAlgos::~ProjectionAlgos()
{
}
//added by tanderson. aka blobfish.
//projection algorithms build a 2d curve(pcurve) but no 3d curve.
//this causes problems with meshing algorithms after save and load.
static const TopoDS_Shape& build3dCurves(const TopoDS_Shape &shape)
{
TopExp_Explorer it;
for (it.Init(shape, TopAbs_EDGE); it.More(); it.Next())
BRepLib::BuildCurve3d(TopoDS::Edge(it.Current()));
return shape;
}
void ProjectionAlgos::execute(void)
{
Handle( HLRBRep_Algo ) brep_hlr = new HLRBRep_Algo;
brep_hlr->Add(Input);
gp_Ax2 transform(gp_Pnt(0,0,0),gp_Dir(Direction.x,Direction.y,Direction.z));
HLRAlgo_Projector projector( transform );
brep_hlr->Projector(projector);
brep_hlr->Update();
brep_hlr->Hide();
// extracting the result sets:
HLRBRep_HLRToShape shapes( brep_hlr );
V = build3dCurves(shapes.VCompound ());// hard edge visibly
V1 = build3dCurves(shapes.Rg1LineVCompound());// Smoth edges visibly
VN = build3dCurves(shapes.RgNLineVCompound());// contour edges visibly
VO = build3dCurves(shapes.OutLineVCompound());// contours apparents visibly
VI = build3dCurves(shapes.IsoLineVCompound());// isoparamtriques visibly
H = build3dCurves(shapes.HCompound ());// hard edge invisibly
H1 = build3dCurves(shapes.Rg1LineHCompound());// Smoth edges invisibly
HN = build3dCurves(shapes.RgNLineHCompound());// contour edges invisibly
HO = build3dCurves(shapes.OutLineHCompound());// contours apparents invisibly
HI = build3dCurves(shapes.IsoLineHCompound());// isoparamtriques invisibly
}
string ProjectionAlgos::getSVG(ExtractionType type,
double tolerance,
XmlAttributes V_style,
XmlAttributes V0_style,
XmlAttributes V1_style,
XmlAttributes H_style,
XmlAttributes H0_style,
XmlAttributes H1_style)
{
stringstream result;
SVGOutput output;
if (!H.IsNull() && (type & WithHidden)) {
H_style.insert({"stroke", "rgb(0, 0, 0)"});
H_style.insert({"stroke-width", "0.15"});
H_style.insert({"stroke-linecap", "butt"});
H_style.insert({"stroke-linejoin", "miter"});
H_style.insert({"stroke-dasharray", "0.2,0.1)"});
H_style.insert({"fill", "none"});
H_style.insert({"transform", "scale(1,-1)"});
BRepMesh_IncrementalMesh(H,tolerance);
result << "<g";
for (const auto& attribute : H_style)
result << " " << attribute.first << "=\""
<< attribute.second << "\"\n";
result << " >" << endl
<< output.exportEdges(H)
<< "</g>" << endl;
}
if (!HO.IsNull() && (type & WithHidden)) {
H0_style.insert({"stroke", "rgb(0, 0, 0)"});
H0_style.insert({"stroke-width", "0.15"});
H0_style.insert({"stroke-linecap", "butt"});
H0_style.insert({"stroke-linejoin", "miter"});
H0_style.insert({"stroke-dasharray", "0.02,0.1)"});
H0_style.insert({"fill", "none"});
H0_style.insert({"transform", "scale(1,-1)"});
BRepMesh_IncrementalMesh(HO,tolerance);
result << "<g";
for (const auto& attribute : H0_style)
result << " " << attribute.first << "=\""
<< attribute.second << "\"\n";
result << " >" << endl
<< output.exportEdges(HO)
<< "</g>" << endl;
}
if (!VO.IsNull()) {
V0_style.insert({"stroke", "rgb(0, 0, 0)"});
V0_style.insert({"stroke-width", "1.0"});
V0_style.insert({"stroke-linecap", "butt"});
V0_style.insert({"stroke-linejoin", "miter"});
V0_style.insert({"fill", "none"});
V0_style.insert({"transform", "scale(1,-1)"});
BRepMesh_IncrementalMesh(VO,tolerance);
result << "<g";
for (const auto& attribute : V0_style)
result << " " << attribute.first << "=\""
<< attribute.second << "\"\n";
result << " >" << endl
<< output.exportEdges(VO)
<< "</g>" << endl;
}
if (!V.IsNull()) {
V_style.insert({"stroke", "rgb(0, 0, 0)"});
V_style.insert({"stroke-width", "1.0"});
V_style.insert({"stroke-linecap", "butt"});
V_style.insert({"stroke-linejoin", "miter"});
V_style.insert({"fill", "none"});
V_style.insert({"transform", "scale(1,-1)"});
BRepMesh_IncrementalMesh(V,tolerance);
result << "<g";
for (const auto& attribute : V_style)
result << " " << attribute.first << "=\""
<< attribute.second << "\"\n";
result << " >" << endl
<< output.exportEdges(V)
<< "</g>" << endl;
}
if (!V1.IsNull() && (type & WithSmooth)) {
V1_style.insert({"stroke", "rgb(0, 0, 0)"});
V1_style.insert({"stroke-width", "1.0"});
V1_style.insert({"stroke-linecap", "butt"});
V1_style.insert({"stroke-linejoin", "miter"});
V1_style.insert({"fill", "none"});
V1_style.insert({"transform", "scale(1,-1)"});
BRepMesh_IncrementalMesh(V1,tolerance);
result << "<g";
for (const auto& attribute : V1_style)
result << " " << attribute.first << "=\""
<< attribute.second << "\"\n";
result << " >" << endl
<< output.exportEdges(V1)
<< "</g>" << endl;
}
if (!H1.IsNull() && (type & WithSmooth) && (type & WithHidden)) {
H1_style.insert({"stroke", "rgb(0, 0, 0)"});
H1_style.insert({"stroke-width", "0.15"});
H1_style.insert({"stroke-linecap", "butt"});
H1_style.insert({"stroke-linejoin", "miter"});
H1_style.insert({"stroke-dasharray", "0.09,0.05)"});
H1_style.insert({"fill", "none"});
H1_style.insert({"transform", "scale(1,-1)"});
BRepMesh_IncrementalMesh(H1,tolerance);
result << "<g";
for (const auto& attribute : H1_style)
result << " " << attribute.first << "=\""
<< attribute.second << "\"\n";
result << " >" << endl
<< output.exportEdges(H1)
<< "</g>" << endl;
}
return result.str();
}
/* dxf output section - Dan Falck 2011/09/25 */
string ProjectionAlgos::getDXF(ExtractionType type, double /*scale*/, double tolerance)
{
stringstream result;
DXFOutput output;
if (!H.IsNull() && (type & WithHidden)) {
//float width = 0.15f/scale;
BRepMesh_IncrementalMesh(H,tolerance);
result << output.exportEdges(H);
}
if (!HO.IsNull() && (type & WithHidden)) {
//float width = 0.15f/scale;
BRepMesh_IncrementalMesh(HO,tolerance);
result << output.exportEdges(HO);
}
if (!VO.IsNull()) {
//float width = 0.35f/scale;
BRepMesh_IncrementalMesh(VO,tolerance);
result << output.exportEdges(VO);
}
if (!V.IsNull()) {
//float width = 0.35f/scale;
BRepMesh_IncrementalMesh(V,tolerance);
result << output.exportEdges(V);
}
if (!V1.IsNull() && (type & WithSmooth)) {
//float width = 0.35f/scale;
BRepMesh_IncrementalMesh(V1,tolerance);
result << output.exportEdges(V1);
}
if (!H1.IsNull() && (type & WithSmooth) && (type & WithHidden)) {
//float width = 0.15f/scale;
BRepMesh_IncrementalMesh(H1,tolerance);
result << output.exportEdges(H1);
}
return result.str();
}

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/***************************************************************************
* Copyright (c) Jürgen Riegel (juergen.riegel@web.de) 2009 *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
//this file originally part of TechDraw workbench
//migrated to TechDraw workbench 2022-01-26 by Wandererfan
#ifndef _TechDrawProjectionAlgos_h_
#define _TechDrawProjectionAlgos_h_
#include <Mod/TechDraw/TechDrawGlobal.h>
#include <TopoDS_Shape.hxx>
#include <Base/Vector3D.h>
#include <string>
class BRepAdaptor_Curve;
namespace TechDraw
{
/** Algo class for projecting shapes and creating SVG output of it
*/
class TechDrawExport ProjectionAlgos
{
public:
/// Constructor
ProjectionAlgos(const TopoDS_Shape &Input,const Base::Vector3d &Dir);
virtual ~ProjectionAlgos();
void execute(void);
enum ExtractionType {
Plain = 0,
WithHidden = 1,
WithSmooth = 2
};
typedef std::map<std::string,std::string> XmlAttributes;
std::string getSVG(ExtractionType type, double tolerance=0.05,
XmlAttributes V_style=XmlAttributes(),
XmlAttributes V0_style=XmlAttributes(),
XmlAttributes V1_style=XmlAttributes(),
XmlAttributes H_style=XmlAttributes(),
XmlAttributes H0_style=XmlAttributes(),
XmlAttributes H1_style=XmlAttributes());
std::string getDXF(ExtractionType type, double scale, double tolerance);//added by Dan Falck 2011/09/25
const TopoDS_Shape &Input;
const Base::Vector3d &Direction;
TopoDS_Shape V ;// hard edge visibly
TopoDS_Shape V1;// Smoth edges visibly
TopoDS_Shape VN;// contour edges visibly
TopoDS_Shape VO;// contours apparents visibly
TopoDS_Shape VI;// isoparamtriques visibly
TopoDS_Shape H ;// hard edge invisibly
TopoDS_Shape H1;// Smoth edges invisibly
TopoDS_Shape HN;// contour edges invisibly
TopoDS_Shape HO;// contours apparents invisibly
TopoDS_Shape HI;// isoparamtriques invisibly
};
} //namespace TechDraw
#endif

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/***************************************************************************
* Copyright (c) 2011 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
//this file originally part of TechDraw workbench
//migrated to TechDraw workbench 2022-01-26 by Wandererfan
#include "PreCompiled.h"
#ifndef _PreComp_
# include <sstream>
# include <cmath>
# include <BRepAdaptor_Curve.hxx>
# include <Geom_Circle.hxx>
# include <gp_Circ.hxx>
# include <gp_Elips.hxx>
#endif
#include <Bnd_Box.hxx>
#include <BRepBndLib.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <BRepBuilderAPI_Transform.hxx>
#include <HLRBRep_Algo.hxx>
#include <TopoDS_Shape.hxx>
#include <HLRTopoBRep_OutLiner.hxx>
//#include <BRepAPI_MakeOutLine.hxx>
#include <HLRAlgo_Projector.hxx>
#include <HLRBRep_ShapeBounds.hxx>
#include <HLRBRep_HLRToShape.hxx>
#include <gp_Ax2.hxx>
#include <gp_Pnt.hxx>
#include <gp_Dir.hxx>
#include <gp_Vec.hxx>
#include <Poly_Polygon3D.hxx>
#include <Poly_Triangulation.hxx>
#include <Poly_PolygonOnTriangulation.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_IndexedMapOfShape.hxx>
#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
#include <TopTools_ListOfShape.hxx>
#include <TColgp_Array1OfPnt2d.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <BRep_Tool.hxx>
#include <BRepAdaptor_CompCurve.hxx>
#include <Approx_Curve3d.hxx>
#include <Geom_BSplineCurve.hxx>
#include <Geom_BezierCurve.hxx>
#include <GeomConvert_BSplineCurveToBezierCurve.hxx>
#include <GeomConvert_BSplineCurveKnotSplitting.hxx>
#include <Geom2d_BSplineCurve.hxx>
#include <BRepLProp_CLProps.hxx>
#include <Standard_Failure.hxx>
#include <Standard_Version.hxx>
#if OCC_VERSION_HEX < 0x070600
#include <BRepAdaptor_HCurve.hxx>
#endif
#include "TechDrawExport.h"
#include <Base/Tools.h>
#include <Base/Vector3D.h>
#if OCC_VERSION_HEX >= 0x070600
using BRepAdaptor_HCurve = BRepAdaptor_Curve;
#endif
using namespace TechDraw;
using namespace std;
TopoDS_Edge TechDrawOutput::asCircle(const BRepAdaptor_Curve& c) const
{
double curv=0;
gp_Pnt pnt, center;
try {
// approximate the circle center from three positions
BRepLProp_CLProps prop(c,c.FirstParameter(),2,Precision::Confusion());
curv += prop.Curvature();
prop.CentreOfCurvature(pnt);
center.ChangeCoord().Add(pnt.Coord());
prop.SetParameter(0.5*(c.FirstParameter()+c.LastParameter()));
curv += prop.Curvature();
prop.CentreOfCurvature(pnt);
center.ChangeCoord().Add(pnt.Coord());
prop.SetParameter(c.LastParameter());
curv += prop.Curvature();
prop.CentreOfCurvature(pnt);
center.ChangeCoord().Add(pnt.Coord());
center.ChangeCoord().Divide(3);
curv /= 3;
}
catch (Standard_Failure&) {
// if getting center of curvature fails, e.g.
// for straight lines it raises LProp_NotDefined
return TopoDS_Edge();
}
// get circle from curvature information
double radius = 1 / curv;
TopLoc_Location location;
Handle(Poly_Polygon3D) polygon = BRep_Tool::Polygon3D(c.Edge(), location);
if (!polygon.IsNull()) {
const TColgp_Array1OfPnt& nodes = polygon->Nodes();
for (int i = nodes.Lower(); i <= nodes.Upper(); i++) {
gp_Pnt p = nodes(i);
double dist = p.Distance(center);
if (std::abs(dist - radius) > 0.001)
return TopoDS_Edge();
}
gp_Circ circ;
circ.SetLocation(center);
circ.SetRadius(radius);
gp_Pnt p1 = nodes(nodes.Lower());
gp_Pnt p2 = nodes(nodes.Upper());
double dist = p1.Distance(p2);
if (dist < Precision::Confusion()) {
BRepBuilderAPI_MakeEdge mkEdge(circ);
return mkEdge.Edge();
}
else {
gp_Vec dir1(center, p1);
dir1.Normalize();
gp_Vec dir2(center, p2);
dir2.Normalize();
p1 = gp_Pnt(center.XYZ() + radius * dir1.XYZ());
p2 = gp_Pnt(center.XYZ() + radius * dir2.XYZ());
BRepBuilderAPI_MakeEdge mkEdge(circ, p1, p2);
return mkEdge.Edge();
}
}
return TopoDS_Edge();
}
TopoDS_Edge TechDrawOutput::asBSpline(const BRepAdaptor_Curve& c, int maxDegree) const
{
Standard_Real tol3D = 0.001;
Standard_Integer maxSegment = 50;
Handle(BRepAdaptor_HCurve) hCurve = new BRepAdaptor_HCurve(c);
// approximate the curve using a tolerance
Approx_Curve3d approx(hCurve,tol3D,GeomAbs_C0,maxSegment,maxDegree);
if (approx.IsDone() && approx.HasResult()) {
// have the result
Handle(Geom_BSplineCurve) spline = approx.Curve();
BRepBuilderAPI_MakeEdge mkEdge(spline, spline->FirstParameter(), spline->LastParameter());
return mkEdge.Edge();
}
return TopoDS_Edge();
}
SVGOutput::SVGOutput()
{
}
std::string SVGOutput::exportEdges(const TopoDS_Shape& input)
{
std::stringstream result;
TopExp_Explorer edges(input, TopAbs_EDGE);
for (int i = 1 ; edges.More(); edges.Next(),i++) {
const TopoDS_Edge& edge = TopoDS::Edge(edges.Current());
BRepAdaptor_Curve adapt(edge);
if (adapt.GetType() == GeomAbs_Circle) {
printCircle(adapt, result);
}
else if (adapt.GetType() == GeomAbs_Ellipse) {
printEllipse(adapt, i, result);
}
else if (adapt.GetType() == GeomAbs_BSplineCurve) {
// TopoDS_Edge circle = asCircle(adapt);
// if (circle.IsNull()) {
printBSpline(adapt, i, result);
// }
// else {
// BRepAdaptor_Curve adapt_circle(circle);
// printCircle(adapt_circle, result);
// }
}
else if (adapt.GetType() == GeomAbs_BezierCurve) {
printBezier(adapt, i, result);
}
// fallback
else {
printGeneric(adapt, i, result);
}
}
return result.str();
}
void SVGOutput::printCircle(const BRepAdaptor_Curve& c, std::ostream& out)
{
gp_Circ circ = c.Circle();
const gp_Pnt& p= circ.Location();
double r = circ.Radius();
double f = c.FirstParameter();
double l = c.LastParameter();
gp_Pnt s = c.Value(f);
gp_Pnt m = c.Value((l+f)/2.0);
gp_Pnt e = c.Value(l);
gp_Vec v1(m,s);
gp_Vec v2(m,e);
gp_Vec v3(0,0,1);
double a = v3.DotCross(v1,v2);
// a full circle
if (fabs(l-f) > 1.0 && s.SquareDistance(e) < 0.001) {
out << "<circle cx =\"" << p.X() << "\" cy =\""
<< p.Y() << "\" r =\"" << r << "\" />";
}
// arc of circle
else {
// See also https://developer.mozilla.org/en/SVG/Tutorial/Paths
char xar = '0'; // x-axis-rotation
char las = (l-f > D_PI) ? '1' : '0'; // large-arc-flag
char swp = (a < 0) ? '1' : '0'; // sweep-flag, i.e. clockwise (0) or counter-clockwise (1)
out << "<path d=\"M" << s.X() << " " << s.Y()
<< " A" << r << " " << r << " "
<< xar << " " << las << " " << swp << " "
<< e.X() << " " << e.Y() << "\" />";
}
}
void SVGOutput::printEllipse(const BRepAdaptor_Curve& c, int id, std::ostream& out)
{
gp_Elips ellp = c.Ellipse();
const gp_Pnt& p= ellp.Location();
double r1 = ellp.MajorRadius();
double r2 = ellp.MinorRadius();
double f = c.FirstParameter();
double l = c.LastParameter();
gp_Pnt s = c.Value(f);
gp_Pnt m = c.Value((l+f)/2.0);
gp_Pnt e = c.Value(l);
// If the minor radius is very small compared to the major radius
// the geometry actually degenerates to a line
double ratio = std::min(r1,r2)/std::max(r1,r2);
if (ratio < 0.001) {
printGeneric(c, id, out);
return;
}
gp_Vec v1(m,s);
gp_Vec v2(m,e);
gp_Vec v3(0,0,1);
double a = v3.DotCross(v1,v2);
// a full ellipse
// See also https://developer.mozilla.org/en/SVG/Tutorial/Paths
gp_Dir xaxis = ellp.XAxis().Direction();
Standard_Real angle = xaxis.AngleWithRef(gp_Dir(1,0,0),gp_Dir(0,0,-1));
angle = Base::toDegrees<double>(angle);
if (fabs(l-f) > 1.0 && s.SquareDistance(e) < 0.001) {
out << "<g transform = \"rotate(" << angle << "," << p.X() << "," << p.Y() << ")\">" << std::endl;
out << "<ellipse cx =\"" << p.X() << "\" cy =\""
<< p.Y() << "\" rx =\"" << r1 << "\" ry =\"" << r2 << "\"/>" << std::endl;
out << "</g>" << std::endl;
}
// arc of ellipse
else {
char las = (l-f > D_PI) ? '1' : '0'; // large-arc-flag
char swp = (a < 0) ? '1' : '0'; // sweep-flag, i.e. clockwise (0) or counter-clockwise (1)
out << "<path d=\"M" << s.X() << " " << s.Y()
<< " A" << r1 << " " << r2 << " "
<< angle << " " << las << " " << swp << " "
<< e.X() << " " << e.Y() << "\" />" << std::endl;
}
}
void SVGOutput::printBezier(const BRepAdaptor_Curve& c, int id, std::ostream& out)
{
try {
std::stringstream str;
str << "<path d=\"M";
Handle(Geom_BezierCurve) bezier = c.Bezier();
Standard_Integer poles = bezier->NbPoles();
// if it's a bezier with degree higher than 3 convert it into a B-spline
if (bezier->Degree() > 3 || bezier->IsRational()) {
TopoDS_Edge edge = asBSpline(c, 3);
if (!edge.IsNull()) {
BRepAdaptor_Curve spline(edge);
printBSpline(spline, id, out);
}
else {
Standard_Failure::Raise("do it the generic way");
}
return;
}
gp_Pnt p1 = bezier->Pole(1);
str << p1.X() << "," << p1.Y();
if (bezier->Degree() == 3) {
if (poles != 4)
Standard_Failure::Raise("do it the generic way");
gp_Pnt p2 = bezier->Pole(2);
gp_Pnt p3 = bezier->Pole(3);
gp_Pnt p4 = bezier->Pole(4);
str << " C"
<< p2.X() << "," << p2.Y() << " "
<< p3.X() << "," << p3.Y() << " "
<< p4.X() << "," << p4.Y() << " ";
}
else if (bezier->Degree() == 2) {
if (poles != 3)
Standard_Failure::Raise("do it the generic way");
gp_Pnt p2 = bezier->Pole(2);
gp_Pnt p3 = bezier->Pole(3);
str << " Q"
<< p2.X() << "," << p2.Y() << " "
<< p3.X() << "," << p3.Y() << " ";
}
else if (bezier->Degree() == 1) {
if (poles != 2)
Standard_Failure::Raise("do it the generic way");
gp_Pnt p2 = bezier->Pole(2);
str << " L" << p2.X() << "," << p2.Y() << " ";
}
else {
Standard_Failure::Raise("do it the generic way");
}
str << "\" />";
out << str.str();
}
catch (Standard_Failure&) {
printGeneric(c, id, out);
}
}
void SVGOutput::printBSpline(const BRepAdaptor_Curve& c, int id, std::ostream& out)
{
try {
std::stringstream str;
Handle(Geom_BSplineCurve) spline;
Standard_Real tol3D = 0.001;
Standard_Integer maxDegree = 3, maxSegment = 100;
Handle(BRepAdaptor_HCurve) hCurve = new BRepAdaptor_HCurve(c);
// approximate the curve using a tolerance
Approx_Curve3d approx(hCurve,tol3D,GeomAbs_C0,maxSegment,maxDegree);
if (approx.IsDone() && approx.HasResult()) {
// have the result
spline = approx.Curve();
} else {
printGeneric(c, id, out);
return;
}
GeomConvert_BSplineCurveToBezierCurve crt(spline);
Standard_Integer arcs = crt.NbArcs();
str << "<path d=\"M";
for (Standard_Integer i=1; i<=arcs; i++) {
Handle(Geom_BezierCurve) bezier = crt.Arc(i);
Standard_Integer poles = bezier->NbPoles();
if (i == 1) {
gp_Pnt p1 = bezier->Pole(1);
str << p1.X() << "," << p1.Y();
}
if (bezier->Degree() == 3) {
if (poles != 4)
Standard_Failure::Raise("do it the generic way");
gp_Pnt p2 = bezier->Pole(2);
gp_Pnt p3 = bezier->Pole(3);
gp_Pnt p4 = bezier->Pole(4);
str << " C"
<< p2.X() << "," << p2.Y() << " "
<< p3.X() << "," << p3.Y() << " "
<< p4.X() << "," << p4.Y() << " ";
}
else if (bezier->Degree() == 2) {
if (poles != 3)
Standard_Failure::Raise("do it the generic way");
gp_Pnt p2 = bezier->Pole(2);
gp_Pnt p3 = bezier->Pole(3);
str << " Q"
<< p2.X() << "," << p2.Y() << " "
<< p3.X() << "," << p3.Y() << " ";
}
else if (bezier->Degree() == 1) {
if (poles != 2)
Standard_Failure::Raise("do it the generic way");
gp_Pnt p2 = bezier->Pole(2);
str << " L" << p2.X() << "," << p2.Y() << " ";
}
else {
Standard_Failure::Raise("do it the generic way");
}
}
str << "\" />";
out << str.str();
}
catch (Standard_Failure&) {
printGeneric(c, id, out);
}
}
void SVGOutput::printGeneric(const BRepAdaptor_Curve& bac, int id, std::ostream& out)
{
TopLoc_Location location;
Handle(Poly_Polygon3D) polygon = BRep_Tool::Polygon3D(bac.Edge(), location);
if (!polygon.IsNull()) {
const TColgp_Array1OfPnt& nodes = polygon->Nodes();
char c = 'M';
out << "<path id= \"" /*<< ViewName*/ << id << "\" d=\" ";
for (int i = nodes.Lower(); i <= nodes.Upper(); i++){
out << c << " " << nodes(i).X() << " " << nodes(i).Y()<< " " ;
c = 'L';
}
out << "\" />" << endl;
} else if (bac.GetType() == GeomAbs_Line) {
//BRep_Tool::Polygon3D assumes the edge has polygon representation - ie already been "tessellated"
//this is not true for all edges, especially "floating edges"
double f = bac.FirstParameter();
double l = bac.LastParameter();
gp_Pnt s = bac.Value(f);
gp_Pnt e = bac.Value(l);
char c = 'M';
out << "<path id= \"" /*<< ViewName*/ << id << "\" d=\" ";
out << c << " " << s.X() << " " << s.Y()<< " " ;
c = 'L';
out << c << " " << e.X() << " " << e.Y()<< " " ;
out << "\" />" << endl;
}
}
// ----------------------------------------------------------------------------
DXFOutput::DXFOutput()
{
}
std::string DXFOutput::exportEdges(const TopoDS_Shape& input)
{
std::stringstream result;
TopExp_Explorer edges(input, TopAbs_EDGE);
for (int i = 1 ; edges.More(); edges.Next(),i++) {
const TopoDS_Edge& edge = TopoDS::Edge(edges.Current());
BRepAdaptor_Curve adapt(edge);
if (adapt.GetType() == GeomAbs_Circle) {
printCircle(adapt, result);
}
else if (adapt.GetType() == GeomAbs_Ellipse) {
printEllipse(adapt, i, result);
}
else if (adapt.GetType() == GeomAbs_BSplineCurve) {
printBSpline(adapt, i, result);
}
// fallback
else {
printGeneric(adapt, i, result);
}
}
return result.str();
}
void DXFOutput::printHeader( std::ostream& out)
{
out << 0 << endl;
out << "SECTION" << endl;
out << 2 << endl;
out << "ENTITIES" << endl;
}
void DXFOutput::printCircle(const BRepAdaptor_Curve& c, std::ostream& out)
{
gp_Circ circ = c.Circle();
//const gp_Ax1& axis = c->Axis();
const gp_Pnt& p= circ.Location();
double r = circ.Radius();
double f = c.FirstParameter();
double l = c.LastParameter();
gp_Pnt s = c.Value(f);
gp_Pnt m = c.Value((l+f)/2.0);
gp_Pnt e = c.Value(l);
gp_Vec v1(m,s);
gp_Vec v2(m,e);
gp_Vec v3(0,0,1);
double a = v3.DotCross(v1,v2);
// a full circle
if (s.SquareDistance(e) < 0.001) {
//out << "<circle cx =\"" << p.X() << "\" cy =\""
//<< p.Y() << "\" r =\"" << r << "\" />";
out << 0 << endl;
out << "CIRCLE" << endl;
out << 8 << endl; // Group code for layer name
out << "sheet_layer" << endl; // Layer number
out << "100" << endl;
out << "AcDbEntity" << endl;
out << "100" << endl;
out << "AcDbCircle" << endl;
out << 10 << endl; // Centre X
out << p.X() << endl; // X in WCS coordinates
out << 20 << endl;
out << p.Y() << endl; // Y in WCS coordinates
out << 30 << endl;
out << 0 << endl; // Z in WCS coordinates-leaving flat
out << 40 << endl; //
out << r << endl; // Radius
}
// arc of circle
else {
// See also https://developer.mozilla.org/en/SVG/Tutorial/Paths
/*char xar = '0'; // x-axis-rotation
char las = (l-f > D_PI) ? '1' : '0'; // large-arc-flag
char swp = (a < 0) ? '1' : '0'; // sweep-flag, i.e. clockwise (0) or counter-clockwise (1)
out << "<path d=\"M" << s.X() << " " << s.Y()
<< " A" << r << " " << r << " "
<< xar << " " << las << " " << swp << " "
<< e.X() << " " << e.Y() << "\" />";*/
double ax = s.X() - p.X();
double ay = s.Y() - p.Y();
double bx = e.X() - p.X();
double by = e.Y() - p.Y();
double start_angle = atan2(ay, ax) * 180/D_PI;
double end_angle = atan2(by, bx) * 180/D_PI;
if(a > 0){
double temp = start_angle;
start_angle = end_angle;
end_angle = temp;}
out << 0 << endl;
out << "ARC" << endl;
out << 8 << endl; // Group code for layer name
out << "sheet_layer" << endl; // Layer number
out << "100" << endl;
out << "AcDbEntity" << endl;
out << "100" << endl;
out << "AcDbCircle" << endl;
out << 10 << endl; // Centre X
out << p.X() << endl; // X in WCS coordinates
out << 20 << endl;
out << p.Y() << endl; // Y in WCS coordinates
out << 30 << endl;
out << 0 << endl; // Z in WCS coordinates
out << 40 << endl; //
out << r << endl; // Radius
out << "100" << endl;
out << "AcDbArc" << endl;
out << 50 << endl;
out << start_angle << endl; // Start angle
out << 51 << endl;
out << end_angle << endl; // End angle
}
}
void DXFOutput::printEllipse(const BRepAdaptor_Curve& c, int /*id*/, std::ostream& out)
{
gp_Elips ellp = c.Ellipse();
const gp_Pnt& p= ellp.Location();
double r1 = ellp.MajorRadius();
double r2 = ellp.MinorRadius();
double dp = ellp.Axis().Direction().Dot(gp_Vec(0,0,1));
// a full ellipse
/* if (s.SquareDistance(e) < 0.001) {
out << "<ellipse cx =\"" << p.X() << "\" cy =\""
<< p.Y() << "\" rx =\"" << r1 << "\" ry =\"" << r2 << "\"/>";
}
// arc of ellipse
else {
// See also https://developer.mozilla.org/en/SVG/Tutorial/Paths
gp_Dir xaxis = ellp.XAxis().Direction();
Standard_Real angle = xaxis.Angle(gp_Dir(1,0,0));
angle = Base::toDegrees<double>(angle);
char las = (l-f > D_PI) ? '1' : '0'; // large-arc-flag
char swp = (a < 0) ? '1' : '0'; // sweep-flag, i.e. clockwise (0) or counter-clockwise (1)
out << "<path d=\"M" << s.X() << " " << s.Y()
<< " A" << r1 << " " << r2 << " "
<< angle << " " << las << " " << swp << " "
<< e.X() << " " << e.Y() << "\" />";
}*/
gp_Dir xaxis = ellp.XAxis().Direction();
double angle = xaxis.AngleWithRef(gp_Dir(1,0,0),gp_Dir(0,0,-1));
//double rotation = Base::toDegrees<double>(angle);
double start_angle = c.FirstParameter();
double end_angle = c.LastParameter();
double major_x;double major_y;
major_x = r1 * cos(angle);
major_y = r1 * sin(angle);
double ratio = r2/r1;
if(dp < 0){
double temp = start_angle;
start_angle = end_angle;
end_angle = temp;
}
out << 0 << endl;
out << "ELLIPSE" << endl;
out << 8 << endl; // Group code for layer name
out << "sheet_layer" << endl; // Layer number
out << "100" << endl;
out << "AcDbEntity" << endl;
out << "100" << endl;
out << "AcDbEllipse" << endl;
out << 10 << endl; // Centre X
out << p.X() << endl; // X in WCS coordinates
out << 20 << endl;
out << p.Y() << endl; // Y in WCS coordinates
out << 30 << endl;
out << 0 << endl; // Z in WCS coordinates
out << 11 << endl; //
out << major_x << endl; // Major X
out << 21 << endl;
out << major_y << endl; // Major Y
out << 31 << endl;
out << 0 << endl; // Major Z
out << 40 << endl; //
out << ratio << endl; // Ratio
out << 41 << endl;
out << start_angle << endl; // Start angle
out << 42 << endl;
out << end_angle << endl; // End angle
}
void DXFOutput::printBSpline(const BRepAdaptor_Curve& c, int id, std::ostream& out) //Not even close yet- DF
{
try {
std::stringstream str;
Handle(Geom_BSplineCurve) spline;
Standard_Real tol3D = 0.001;
Standard_Integer maxDegree = 3, maxSegment = 50;
Handle(BRepAdaptor_HCurve) hCurve = new BRepAdaptor_HCurve(c);
// approximate the curve using a tolerance
Approx_Curve3d approx(hCurve,tol3D,GeomAbs_C0,maxSegment,maxDegree);
if (approx.IsDone() && approx.HasResult()) {
// have the result
spline = approx.Curve();
} else {
printGeneric(c, id, out);
return;
}
//GeomConvert_BSplineCurveToBezierCurve crt(spline);
//GeomConvert_BSplineCurveKnotSplitting crt(spline,0);
//Standard_Integer arcs = crt.NbArcs();
//Standard_Integer arcs = crt.NbSplits()-1;
Standard_Integer m = 0;
if (spline->IsPeriodic()) {
m = spline->NbPoles() + 2*spline->Degree() - spline->Multiplicity(1) + 2;
}
else {
for (int i=1; i<= spline->NbKnots(); i++)
m += spline->Multiplicity(i);
}
TColStd_Array1OfReal knotsequence(1,m);
spline->KnotSequence(knotsequence);
TColgp_Array1OfPnt poles(1,spline->NbPoles());
spline->Poles(poles);
str << 0 << endl
<< "SPLINE" << endl
<< 8 << endl // Group code for layer name
<< "sheet_layer" << endl // Layer name
<< "100" << endl
<< "AcDbEntity" << endl
<< "100" << endl
<< "AcDbSpline" << endl
<< 70 << endl
<< spline->IsRational()*4 << endl //flags
<< 71 << endl << spline->Degree() << endl
<< 72 << endl << knotsequence.Length() << endl
<< 73 << endl << poles.Length() << endl
<< 74 << endl << 0 << endl; //fitpoints
for (int i = knotsequence.Lower() ; i <= knotsequence.Upper(); i++) {
str << 40 << endl << knotsequence(i) << endl;
}
for (int i = poles.Lower(); i <= poles.Upper(); i++) {
gp_Pnt pole = poles(i);
str << 10 << endl << pole.X() << endl
<< 20 << endl << pole.Y() << endl
<< 30 << endl << pole.Z() << endl;
if (spline->IsRational()) {
str << 41 << endl << spline->Weight(i) << endl;
}
}
//str << "\" />";
out << str.str();
}
catch (Standard_Failure&) {
printGeneric(c, id, out);
}
}
void DXFOutput::printGeneric(const BRepAdaptor_Curve& c, int /*id*/, std::ostream& out)
{
double uStart = c.FirstParameter();
gp_Pnt PS;
gp_Vec VS;
c.D1(uStart, PS, VS);
double uEnd = c.LastParameter();
gp_Pnt PE;
gp_Vec VE;
c.D1(uEnd, PE, VE);
out << "0" << endl;
out << "LINE" << endl;
out << "8" << endl; // Group code for layer name
out << "sheet_layer" << endl; // Layer name
out << "100" << endl;
out << "AcDbEntity" << endl;
out << "100" << endl;
out << "AcDbLine" << endl;
out << "10" << endl; // Start point of line
out << PS.X() << endl; // X in WCS coordinates
out << "20" << endl;
out << PS.Y() << endl; // Y in WCS coordinates
out << "30" << endl;
out << "0" << endl; // Z in WCS coordinates
out << "11" << endl; // End point of line
out << PE.X() << endl; // X in WCS coordinates
out << "21" << endl;
out << PE.Y() << endl; // Y in WCS coordinates
out << "31" << endl;
out << "0" << endl; // Z in WCS coordinates
}

80
src/Mod/TechDraw/App/TechDrawExport.h Normal file
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@@ -0,0 +1,80 @@
/***************************************************************************
* Copyright (c) 2011 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
//this file originally part of TechDraw workbench
//migrated to TechDraw workbench 2022-01-26 by Wandererfan
#ifndef TECHDRAW_EXPORT_H
#define TECHDRAW_EXPORT_H
#include <Mod/TechDraw/TechDrawGlobal.h>
#include <string>
#include <TopoDS_Edge.hxx>
class TopoDS_Shape;
class BRepAdaptor_Curve;
namespace TechDraw
{
class TechDrawExport TechDrawOutput
{
public:
// If the curve is approximately a circle it will be returned,
// otherwise a null edge is returned.
TopoDS_Edge asCircle(const BRepAdaptor_Curve&) const;
TopoDS_Edge asBSpline(const BRepAdaptor_Curve&, int maxDegree) const;
};
class TechDrawExport SVGOutput : public TechDrawOutput
{
public:
SVGOutput();
std::string exportEdges(const TopoDS_Shape&);
private:
void printCircle(const BRepAdaptor_Curve&, std::ostream&);
void printEllipse(const BRepAdaptor_Curve&, int id, std::ostream&);
void printBSpline(const BRepAdaptor_Curve&, int id, std::ostream&);
void printBezier(const BRepAdaptor_Curve&, int id, std::ostream&);
void printGeneric(const BRepAdaptor_Curve&, int id, std::ostream&);
};
/* dxf output section - Dan Falck 2011/09/25 */
class TechDrawExport DXFOutput : public TechDrawOutput
{
public:
DXFOutput();
std::string exportEdges(const TopoDS_Shape&);
private:
void printHeader(std::ostream& out);
void printCircle(const BRepAdaptor_Curve&, std::ostream&);
void printEllipse(const BRepAdaptor_Curve&, int id, std::ostream&);
void printBSpline(const BRepAdaptor_Curve&, int id, std::ostream&);
void printGeneric(const BRepAdaptor_Curve&, int id, std::ostream&);
};
} //namespace TechDraw
#endif // TECHDRAW_EXPORT_H