myProjFace.LowerDistanceParameters(u, v);
gp_Pnt2d aProjPnt (u, v);
BRepClass_FaceClassifier aClsf ( TopoDS::Face( myShape ), aProjPnt, myTol );
myProjFace.LowerDistanceParameters(u, v);
gp_Pnt2d aProjPnt (u, v);
BRepClass_FaceClassifier aClsf ( TopoDS::Face( myShape ), aProjPnt, myTol );