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add maxh property to occ shapes, add TopoDS_Edge.Split method

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This commit is contained in:
Christopher Lackner 2021-08-20 22:26:20 +02:00
parent 462a9ae64c
commit 5643a44287
3 changed files with 54 additions and 5 deletions
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6
libsrc/occ/occgenmesh.cpp
View File

@ -225,7 +225,6 @@ namespace netgen
const MeshingParameters & mparam)
{
double s0, s1;
double maxh = mparam.maxh;
int nsubedges = 1;
gp_Pnt pnt, oldpnt;
double svalue[DIVIDEEDGESECTIONS];
@ -871,7 +870,7 @@ namespace netgen
// Philippose - 15/01/2009
double maxh = geom.face_maxh[k-1];
double maxh = min2(geom.face_maxh[k-1], OCCGeometry::global_shape_properties[TopoDS::Face(geom.fmap(k)).TShape()].maxh);
//double maxh = mparam.maxh;
// int noldpoints = mesh->GetNP();
int noldsurfel = mesh.GetNSE();
@ -1151,13 +1150,14 @@ namespace netgen
int face_index = geom.fmap.FindIndex(parent_face);
if(face_index >= 1) localh = min(localh,geom.face_maxh[face_index - 1]);
localh = min2(localh, OCCGeometry::global_shape_properties[parent_face.TShape()].maxh);
}
Handle(Geom_Curve) c = BRep_Tool::Curve(e, s0, s1);
localh = min2(localh, OCCGeometry::global_shape_properties[e.TShape()].maxh);
maxedgelen = max (maxedgelen, len);
minedgelen = min (minedgelen, len);
int maxj = max((int) ceil(len/localh), 2);
for (int j = 0; j <= maxj; j++)

4
libsrc/occ/occgeom.hpp
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@ -214,10 +214,12 @@ namespace netgen
public:
optional<string> name;
optional<Vec<3>> col;
double maxh = 1e99;
void Merge(const ShapeProperties & prop2)
{
if (prop2.name) name = prop2.name;
if (prop2.col) col = prop2.col;
if (prop2.col) col = prop2.col;
maxh = min2(maxh, prop2.maxh);
}
};

49
libsrc/occ/python_occ_shapes.cpp
View File

@ -53,6 +53,9 @@
#include <ShapeUpgrade_UnifySameDomain.hxx>
#include <GeomLProp_SLProps.hxx>
#include <BOPTools_AlgoTools.hxx>
#include <IntTools_Context.hxx>
#if OCC_VERSION_MAJOR>=7 && OCC_VERSION_MINOR>=4
#define OCC_HAVE_DUMP_JSON
#endif
@ -679,7 +682,15 @@ DLL_HEADER void ExportNgOCCShapes(py::module &m)
}, [](const TopoDS_Shape & self, string name) {
OCCGeometry::global_shape_properties[self.TShape()].name = name;
})
.def_property("maxh",
[](const TopoDS_Shape& self)
{
return OCCGeometry::global_shape_properties[self.TShape()].maxh;
},
[](TopoDS_Shape& self, double val)
{
OCCGeometry::global_shape_properties[self.TShape()].maxh = val;
})
.def_property("col", [](const TopoDS_Shape & self) {
auto it = OCCGeometry::global_shape_properties.find(self.TShape());
Vec<3> col(0.2, 0.2, 0.2);
@ -1082,6 +1093,42 @@ DLL_HEADER void ExportNgOCCShapes(py::module &m)
curve->D1(s1, p, v);
return v;
})
.def("Split", [](const TopoDS_Edge& self, py::args args)
{
ListOfShapes new_edges;
double s0, s1;
auto curve = BRep_Tool::Curve(self, s0, s1);
double tstart, t, dist;
TopoDS_Vertex vstart, vend;
vstart = TopExp::FirstVertex(self);
IntTools_Context context;
tstart = s0;
for(auto arg : args)
{
if(py::isinstance<py::float_>(arg))
t = s0 + py::cast<double>(arg) * (s1-s0);
else
{
auto p = py::cast<gp_Pnt>(arg);
auto result = context.ComputePE(p, 0., self, t, dist);
if(result != 0)
throw Exception("Error in finding splitting points on edge!");
}
auto p = curve->Value(t);
vend = BRepBuilderAPI_MakeVertex(p);
auto newE = TopoDS::Edge(self.EmptyCopied());
BOPTools_AlgoTools::MakeSplitEdge(self, vstart, tstart, vend, t, newE);
new_edges.push_back(newE);
vstart = vend;
tstart = t;
}
auto newE = TopoDS::Edge(self.EmptyCopied());
t = s1;
vend = TopExp::LastVertex(self);
BOPTools_AlgoTools::MakeSplitEdge(self, vstart, tstart, vend, t, newE);
new_edges.push_back(newE);
return new_edges;
}, "Splits edge at given parameters. Parameters can either be floating values in (0,1), then edge parametrization is used. Or it can be points, then the projection of these points are used for splitting the edge.")
;
py::class_<TopoDS_Wire, TopoDS_Shape> (m, "Wire")
.def(py::init([](const TopoDS_Edge & edge) {