for ( int i = 1; i <= 8; i++ ) {
const TopoDS_Vertex& v = TopoDS::Vertex( vfMap.FindKey( i ));
gp_Pnt P = BRep_Tool::Pnt( v );
for ( int i = 1; i <= 8; i++ ) {
const TopoDS_Vertex& v = TopoDS::Vertex( vfMap.FindKey( i ));
gp_Pnt P = BRep_Tool::Pnt( v );