double u = u1 * ( 1 - hR ) + u3 * hR;
TopLoc_Location loc; double f,l;
Handle(Geom_Curve) curve = BRep_Tool::Curve( edge,loc,f,l );
double u = u1 * ( 1 - hR ) + u3 * hR;
TopLoc_Location loc; double f,l;
Handle(Geom_Curve) curve = BRep_Tool::Curve( edge,loc,f,l );