i want to edit arbitrary vertex of a arbitrary shape just like what has been discussed
and i can edit vertex on an edge now, use the method in http://www.opencascade.org/org/forum/thread_14071/
thanks for Pawel and all other people contributing for this problem.
but there is a problem, when i move a vertex to another location, previous face(i mean plane here) with this point usually will not be a plane now. thats a problem for both "reshape" or duplicate mechanism. anyone has any idea about this?
thanks for any help.