double aUMin, aUMax, aVMin, aVMax;
BRepTools::UVBounds(aFace, aUMin, aUMax, aVMin, aVMax);
double aSemiAngle = Abs(aCon.SemiAngle());
double aUMin, aUMax, aVMin, aVMax;
BRepTools::UVBounds(aFace, aUMin, aUMax, aVMin, aVMax);
double aSemiAngle = Abs(aCon.SemiAngle());