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Problems with TopoDS_Shapes Transform

powerboy759123456789's picture
Forums: 

when i want to transform a TopoDS_Shape,shuch rotate if,translate it and scale it. I use
gp_Trsf tsf;
tsf.SetTranslation(gp_Vec(gp_Pnt(x,y,z),gp_Pnt(x0,y0,z0)));
BRepBuilderAPI_Transform trsf(tsf);
trsf.Perform(NShape);
TopoDS_Shape ResultShape = trsf.Shape();

if the TopoDS_Shape is simple ,it seems no problem.
but the more complex the TopoDS_Shape is ,the slower the shape transforms.
what shall i do ,can someone give me some advice?
thank you

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