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boolean operations for occ in Python

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Joachim Schoeberl 2021-07-24 22:31:40 +02:00
parent 56e848eea9
commit 5066fe0fce
1 changed files with 18 additions and 47 deletions
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65
libsrc/occ/python_occ.cpp
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@ -9,14 +9,13 @@
#include <occgeom.hpp>
#include <Standard_Version.hxx>
#include <gp_Ax2.hxx>
#include <BRepPrimAPI_MakeSphere.hxx>
#include <BRepPrimAPI_MakeCylinder.hxx>
#include <BRepPrimAPI_MakeBox.hxx>
#include <BOPAlgo_MakerVolume.hxx>
#include <BOPAlgo_Section.hxx>
#include <BRepAlgoAPI_Cut.hxx>
#include <BRepAlgoAPI_Section.hxx>
#include <BRepAlgoAPI_Common.hxx>
#include <BRepAlgoAPI_Fuse.hxx>
using namespace netgen;
@ -253,8 +252,10 @@ DLL_HEADER void ExportNgOCC(py::module &m)
shape.DumpJson(str);
return str.str();
})
.def("ShapeType", [] (const TopoDS_Shape & shape)
{ return shape.ShapeType(); })
.def("SubShapes", [] (const TopoDS_Shape & shape, TopAbs_ShapeEnum & type)
{
py::list sub;
@ -263,50 +264,20 @@ DLL_HEADER void ExportNgOCC(py::module &m)
sub.append(e.Current());
return sub;
})
.def("__mul__", [] (const TopoDS_Shape & shape1, const TopoDS_Shape & shape2)
{
// https://dev.opencascade.org/doc/occt-7.3.0/overview/html/occt_user_guides__boolean_operations.html#occt_algorithms_10a
.def("__add__", [] (const TopoDS_Shape & shape1, const TopoDS_Shape & shape2) {
return BRepAlgoAPI_Fuse(shape1, shape2).Shape();
})
.def("__mul__", [] (const TopoDS_Shape & shape1, const TopoDS_Shape & shape2) {
return BRepAlgoAPI_Common(shape1, shape2).Shape();
})
.def("__sub__", [] (const TopoDS_Shape & shape1, const TopoDS_Shape & shape2) {
return BRepAlgoAPI_Cut(shape1, shape2).Shape();
})
;
/*
choose boolean operation:
https://uma.ensta-paris.fr/soft/XLiFE++/?module=doc&action=source&set=release&file=OpenCascade_8cpp_source.html
BRepAlgoAPI_BooleanOperation bop;
bop.SetArguments(args); bop.SetTools(tools);
bop.SetOperation(BOPAlgo_FUSE);
*/
BOPAlgo_MakerVolume aMV;
// aMV.SetOperation(BOPAlgo_CUT);
// BOPAlgo_Section aMV; // only vertices + edges
// BOPAlgo_Builder aMV;
// BRepAlgoAPI_Cut aMV;
TopTools_ListOfShape aLSObjects;
aLSObjects.Append (shape1);
aLSObjects.Append (shape2);
// aBuilder.SetArguments(aLSObjects);
aMV.SetArguments(aLSObjects);
// aMV.SetIntersect(true);
aMV.Perform(); // howto perform BOPAlgo_CUT ???
// aMV.Build();
return aMV.Shape();
/*
// ?????
// auto cut = BRepAlgoAPI_Cut (shape1, shape2);
auto cut = BRepAlgoAPI_Section (shape1, shape2);
TopTools_ListOfShape aLSObjects;
aLSObjects.Append (cut);
BOPAlgo_MakerVolume aMV;
aMV.SetArguments(aLSObjects);
aMV.Perform();
return aMV.Shape();
*/
});
;
m.def("Sphere", [] (gp_Pnt cc, double r) {
return BRepPrimAPI_MakeSphere (cc, r).Shape();