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few occ exports

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This commit is contained in:
Joachim Schoeberl 2021-07-24 11:07:39 +02:00
parent ee0bca464f
commit d783b71d49
3 changed files with 76 additions and 4 deletions
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4
libsrc/occ/occgenmesh.cpp
View File

@ -41,10 +41,6 @@ namespace netgen
return 1e99;
}
inline Point<3> occ2ng (const gp_Pnt & p)
{
return Point<3> (p.X(), p.Y(), p.Z());
}
double ComputeH (double kappa, const MeshingParameters & mparam)
{

11
libsrc/occ/occgeom.hpp
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@ -104,6 +104,17 @@ namespace netgen
#define OCCGEOMETRYVISUALIZATIONHALFCHANGE 2 // Redraw
inline Point<3> occ2ng (const gp_Pnt & p)
{
return Point<3> (p.X(), p.Y(), p.Z());
}
inline gp_Pnt ng2occ (const Point<3> & p)
{
return gp_Pnt(p(0), p(1), p(2));
}
class EntityVisualizationCode
{

65
libsrc/occ/python_occ.cpp
View File

@ -8,6 +8,9 @@
#include <meshing.hpp>
#include <occgeom.hpp>
#include <Standard_Version.hxx>
#include <BRepPrimAPI_MakeSphere.hxx>
#include <BOPAlgo_MakerVolume.hxx>
#include <BOPAlgo_Section.hxx>
using namespace netgen;
@ -50,8 +53,22 @@ DLL_HEADER void ExportNgOCC(py::module &m)
m.attr("occ_version") = OCC_VERSION_COMPLETE;
py::class_<OCCGeometry, shared_ptr<OCCGeometry>, NetgenGeometry> (m, "OCCGeometry", R"raw_string(Use LoadOCCGeometry to load the geometry from a *.step file.)raw_string")
.def(py::init<>())
/*
.def(py::init<const TopoDS_Shape&>(), py::arg("shape"),
"Create Netgen OCCGeometry from existing TopoDS_Shape")
*/
.def(py::init([] (const TopoDS_Shape& shape)
{
auto geo = make_shared<OCCGeometry> (shape);
ng_geometry = geo;
geo->BuildFMap();
geo->CalcBoundingBox();
// PrintContents (geo);
cout << "bounding box = " << geo->GetBoundingBox() << endl;
return geo;
}), py::arg("shape"),
"Create Netgen OCCGeometry from existing TopoDS_Shape")
.def(py::init([] (const string& filename)
{
shared_ptr<OCCGeometry> geo;
@ -191,6 +208,54 @@ DLL_HEADER void ExportNgOCC(py::module &m)
(meshingparameter_description + occparameter_description).c_str())
;
py::enum_<TopAbs_ShapeEnum>(m, "TopAbs_ShapeEnum", "Enumeration of all supported TopoDS_Shapes")
.value("COMPOUND", TopAbs_COMPOUND) .value("COMPSOLID", TopAbs_COMPSOLID)
.value("SOLID", TopAbs_SOLID) .value("SHELL", TopAbs_SHELL)
.value("FACE", TopAbs_FACE) .value("WIRE", TopAbs_WIRE)
.value("EDGE", TopAbs_EDGE) .value("VERTEX", TopAbs_VERTEX)
.value("SHAPE", TopAbs_SHAPE)
.export_values()
;
py::class_<TopoDS_Shape> (m, "TopoDS_Shape")
.def("__str__", [] (const TopoDS_Shape & shape)
{
stringstream str;
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;
TopExp_Explorer e;
for (e.Init(shape, type); e.More(); e.Next())
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
BOPAlgo_MakerVolume aMV;
// BOPAlgo_Section aMV;
// BOPAlgo_Builder aBuilder;
TopTools_ListOfShape aLSObjects;
aLSObjects.Append (shape1);
aLSObjects.Append (shape2);
// aBuilder.SetArguments(aLSObjects);
aMV.SetArguments(aLSObjects);
aMV.Perform();
return aMV.Shape();
});
;
m.def("Sphere", [] (py::tuple c, double r)
{
gp_Pnt cc { py::cast<double> (c[0]), py::cast<double>(c[1]), py::cast<double>(c[2]) };
return BRepPrimAPI_MakeSphere (cc, r).Shape();
});
m.def("LoadOCCGeometry",[] (const string & filename)
{
cout << "WARNING: LoadOCCGeometry is deprecated! Just use the OCCGeometry(filename) constructor. It is able to read brep and iges files as well!" << endl;