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BRepOffsetAPI

K.H.K. Anding's picture
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Hello everyone,

I've got a problem while working with the BRepOffsetAPI_Makeoffset, trying to offset a plane wire. The following test-code crashes at the last line:

////////////////////////////////////////////////////////////////////////// Handle(TColgp_HArray1OfPnt2d) harray = new TColgp_HArray1OfPnt2d (1,4);

harray->SetValue(1,gp_Pnt2d (0, 99));

harray->SetValue(2,gp_Pnt2d (29,100));

harray->SetValue(3,gp_Pnt2d (60, 199));

harray->SetValue(4,gp_Pnt2d (90, 230));

Geom2dAPI_Interpolate anInterpolation(harray,Standard_False,0.01);

anInterpolation.Perform();

Handle(Geom2d_BSplineCurve) SPL = anInterpolation.Curve();

Handle(Geom_Plane) P = new Geom_Plane(gp::XOY());

Handle(Geom_Curve) C= GeomAPI::To3d(SPL,P->Pln());

TopoDS_Edge edge;

if (!C.IsNull()) edge = BRepBuilderAPI_MakeEdge(C);

TopoDS_Wire wire;

wire = BRepBuilderAPI_MakeWire(edge);

BRepOffsetAPI_MakeOffset aOffs;

aOffs.AddWire(wire);

aOffs.Perform(1.0); .... //////////////////////////////////////////////////////////////////////////

The code works fine if I use only an interpolated Curve through 3 Points. Has anyone got the same problems and does know a workaround here?

Thanks in advance for any ideas

Kai

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