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https://github.com/NGSolve/netgen.git
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curves on surfaces
This commit is contained in:
Joachim Schoeberl
parent
b829c9bcc8
commit
62a0743e4e
@ -10,6 +10,7 @@
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#include <gp_Ax1.hxx>
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#include <gp_Ax2.hxx>
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#include <gp_Ax2d.hxx>
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#include <gp_Trsf.hxx>
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#include <BRepPrimAPI_MakeSphere.hxx>
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#include <BRepPrimAPI_MakeCylinder.hxx>
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@ -30,9 +31,16 @@
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#include <BRepBuilderAPI_Transform.hxx>
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#include <BRepBuilderAPI_MakeFace.hxx>
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#include <BRepFilletAPI_MakeFillet.hxx>
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#include <BRepOffsetAPI_ThruSections.hxx>
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#include <BRepGProp.hxx>
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#include <BRepOffsetAPI_MakeThickSolid.hxx>
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#include <BRepLib.hxx>
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#include <Geom2d_Curve.hxx>
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#include <Geom2d_Ellipse.hxx>
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#include <Geom2d_TrimmedCurve.hxx>
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#include <GCE2d_MakeSegment.hxx>
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#if OCC_VERSION_MAJOR>=7 && OCC_VERSION_MINOR>=4
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#define OCC_HAVE_DUMP_JSON
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@ -321,6 +329,48 @@ DLL_HEADER void ExportNgOCC(py::module &m)
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}))
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;
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py::class_<gp_Pnt2d>(m, "gp_Pnt2d")
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.def(py::init([] (py::tuple pnt)
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{
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return gp_Pnt2d(py::cast<double>(pnt[0]),
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py::cast<double>(pnt[1]));
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}))
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.def(py::init([] (double x, double y) {
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return gp_Pnt2d(x, y);
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}))
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;
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py::class_<gp_Vec2d>(m, "gp_Vec2d")
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.def(py::init([] (py::tuple vec)
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{
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return gp_Vec2d(py::cast<double>(vec[0]),
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py::cast<double>(vec[1]));
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}))
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.def(py::init([] (double x, double y) {
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return gp_Vec2d(x, y);
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}))
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;
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py::class_<gp_Dir2d>(m, "gp_Dir2d")
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.def(py::init([] (py::tuple dir)
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{
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return gp_Dir2d(py::cast<double>(dir[0]),
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py::cast<double>(dir[1]));
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}))
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.def(py::init([] (double x, double y) {
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return gp_Dir2d(x, y);
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}))
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;
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py::class_<gp_Ax2d>(m, "gp_Ax2d")
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.def(py::init([](gp_Pnt2d p, gp_Dir2d d) {
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return gp_Ax2d(p,d);
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}))
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;
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py::class_<gp_Trsf>(m, "gp_Trsf")
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.def(py::init<>())
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.def("SetMirror", [] (gp_Trsf & trafo, const gp_Ax1 & ax) { trafo.SetMirror(ax); return trafo; })
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@ -356,7 +406,15 @@ DLL_HEADER void ExportNgOCC(py::module &m)
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py::list sub;
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TopExp_Explorer e;
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for (e.Init(shape, type); e.More(); e.Next())
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sub.append(e.Current());
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{
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switch (type)
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{
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case TopAbs_FACE:
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sub.append(TopoDS::Face(e.Current())); break;
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default:
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sub.append(e.Current());
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}
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}
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return sub;
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})
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@ -483,11 +541,22 @@ DLL_HEADER void ExportNgOCC(py::module &m)
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return builder.Shape();
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})
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.def("Find", [](const TopoDS_Shape & shape, gp_Pnt p)
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{
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// find sub-shape contianing point
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// BRepClass_FaceClassifier::Perform (p);
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})
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.def("MakeTriangulation", [](const TopoDS_Shape & shape)
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{
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BRepTools::Clean (shape);
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double deflection = 0.01;
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BRepMesh_IncrementalMesh (shape, deflection, true);
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})
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.def("Triangulation", [](const TopoDS_Shape & shape)
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{
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// extracted from vsocc.cpp
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Array< std::array<Point<3>,3> > triangles;
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TopoDS_Face face;
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try
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{
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@ -499,42 +568,67 @@ DLL_HEADER void ExportNgOCC(py::module &m)
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throw NgException ("Triangulation: shape is not a face");
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}
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/*
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BRepTools::Clean (shape);
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double deflection = 0.01;
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BRepMesh_IncrementalMesh (shape, deflection, true);
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*/
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Handle(Geom_Surface) surf = BRep_Tool::Surface (face);
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TopLoc_Location loc;
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Handle(Poly_Triangulation) triangulation = BRep_Tool::Triangulation (face, loc);
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if (!triangulation.IsNull())
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if (triangulation.IsNull())
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{
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int ntriangles = triangulation -> NbTriangles();
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for (int j = 1; j <= ntriangles; j++)
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{
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cout << "triangle " << j << "/" << ntriangles << endl;
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Poly_Triangle triangle = (triangulation -> Triangles())(j);
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std::array<Point<3>,3> pts;
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for (int k = 0; k < 3; k++)
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pts[k] = occ2ng( (triangulation -> Nodes())(triangle(k+1)).Transformed(loc) );
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BRepTools::Clean (shape);
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double deflection = 0.01;
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BRepMesh_IncrementalMesh (shape, deflection, true);
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triangulation = BRep_Tool::Triangulation (face, loc);
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}
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// throw Exception("Don't have a triangulation, call 'MakeTriangulation' first");
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triangles.Append ( pts );
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for (auto p : pts) cout << p << " ";
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cout << endl;
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}
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int ntriangles = triangulation -> NbTriangles();
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Array< std::array<Point<3>,3> > triangles;
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for (int j = 1; j <= ntriangles; j++)
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{
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Poly_Triangle triangle = (triangulation -> Triangles())(j);
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std::array<Point<3>,3> pts;
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for (int k = 0; k < 3; k++)
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pts[k] = occ2ng( (triangulation -> Nodes())(triangle(k+1)).Transformed(loc) );
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triangles.Append ( pts );
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}
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// return MoveToNumpyArray(triangles);
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return triangles;
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})
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;
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py::class_<TopoDS_Edge, TopoDS_Shape> (m, "TopoDS_Edge");
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py::class_<TopoDS_Wire, TopoDS_Shape> (m, "TopoDS_Wire");
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py::class_<TopoDS_Face, TopoDS_Shape> (m, "TopoDS_Face");
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py::class_<TopoDS_Face, TopoDS_Shape> (m, "TopoDS_Face")
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/*
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.def("surf", [] (TopoDS_Face face) -> Handle(Geom_Surface)
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{
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Handle(Geom_Surface) surf = BRep_Tool::Surface (face);
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return surf;
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})
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*/
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;
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py::class_<TopoDS_Solid, TopoDS_Shape> (m, "TopoDS_Solid");
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py::class_<Handle(Geom2d_Curve)> (m, "Geom2d_Curve")
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.def("Trim", [](Handle(Geom2d_Curve) curve, double u1, double u2) -> Handle(Geom2d_Curve)
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{
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return new Geom2d_TrimmedCurve (curve, u1, u2);
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})
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.def("Value", [](Handle(Geom2d_Curve) curve, double s) {
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return curve->Value(s);
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})
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;
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m.def("Sphere", [] (gp_Pnt cc, double r) {
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return BRepPrimAPI_MakeSphere (cc, r).Solid();
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});
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@ -554,6 +648,19 @@ DLL_HEADER void ExportNgOCC(py::module &m)
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return BRepPrimAPI_MakePrism (face, vec).Shape();
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});
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// Handle(Geom2d_Ellipse) anEllipse1 = new Geom2d_Ellipse(anAx2d, aMajor, aMinor);
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m.def("Ellipse", [] (const gp_Ax2d & ax, double major, double minor) -> Handle(Geom2d_Curve)
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{
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return new Geom2d_Ellipse(ax, major, minor);
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});
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m.def("Segment", [](gp_Pnt2d p1, gp_Pnt2d p2) -> Handle(Geom2d_Curve) {
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Handle(Geom2d_TrimmedCurve) curve = GCE2d_MakeSegment(p1, p2);
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return curve;
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// return BRepBuilderAPI_MakeEdge(curve).Edge();
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// return GCE2d_MakeSegment(p1, p2);
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});
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m.def("Glue", [] (const std::vector<TopoDS_Shape> shapes) -> TopoDS_Shape
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{
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@ -619,8 +726,8 @@ DLL_HEADER void ExportNgOCC(py::module &m)
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});
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py::class_<Handle(Geom_TrimmedCurve)> (m, "Geom_TrimmedCurve")
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;
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// py::class_<Handle(Geom_TrimmedCurve)> (m, "Geom_TrimmedCurve")
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// ;
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m.def("Segment", [](gp_Pnt p1, gp_Pnt p2) {
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Handle(Geom_TrimmedCurve) curve = GC_MakeSegment(p1, p2);
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@ -636,6 +743,12 @@ DLL_HEADER void ExportNgOCC(py::module &m)
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});
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m.def("Edge", [](Handle(Geom2d_Curve) curve2d, TopoDS_Face face) {
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auto edge = BRepBuilderAPI_MakeEdge(curve2d, BRep_Tool::Surface (face)).Edge();
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BRepLib::BuildCurves3d(edge);
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return edge;
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});
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m.def("Wire", [](std::vector<TopoDS_Shape> edges) {
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BRepBuilderAPI_MakeWire builder;
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for (auto s : edges)
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@ -675,6 +788,15 @@ DLL_HEADER void ExportNgOCC(py::module &m)
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return maker.Shape();
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});
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m.def("ThruSections", [](std::vector<TopoDS_Shape> wires)
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{
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BRepOffsetAPI_ThruSections aTool(Standard_True);
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for (auto shape : wires)
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aTool.AddWire(TopoDS::Wire(shape));
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aTool.CheckCompatibility(Standard_False);
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return aTool.Shape();
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});
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m.def("LoadOCCGeometry",[] (const string & filename)
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{
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cout << "WARNING: LoadOCCGeometry is deprecated! Just use the OCCGeometry(filename) constructor. It is able to read brep and iges files as well!" << endl;
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