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surface normal

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This commit is contained in:
Joachim Schoeberl 2021-08-11 21:54:45 +02:00
parent 73f387a7ed
commit 56c59353bb
1 changed files with 8 additions and 0 deletions
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8
libsrc/occ/python_occ_shapes.cpp
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@ -48,6 +48,7 @@
#include <GCE2d_MakeSegment.hxx>
#include <GCE2d_MakeCircle.hxx>
#include <ShapeUpgrade_UnifySameDomain.hxx>
#include <GeomLProp_SLProps.hxx>
#if OCC_VERSION_MAJOR>=7 && OCC_VERSION_MINOR>=4
#define OCC_HAVE_DUMP_JSON
@ -617,6 +618,13 @@ DLL_HEADER void ExportNgOCCShapes(py::module &m)
surf->D1 (u,v,p,du,dv);
return tuple(p,du,dv);
})
.def("Normal", [] (const Handle(Geom_Surface) & surf, double u, double v) {
GeomLProp_SLProps lprop(surf,u,v,1,1e-8);
if (lprop.IsNormalDefined())
return lprop.Normal();
throw Exception("normal not defined");
})
;