// delete a pair of halfedges and make a inner loop
// the isolated vertex will be identified by its he which is null
// for consistency, we assume that he2 is next to he1 and they are a pair
Loop* Solid::kemr(HalfEdge *he1)
{
Loop *lp = he1->l;
// DelHalfEdge delete he1 and its partner halfedge
// and return the isolated vertex
// the isolated vertex is already in the solid's vertex list
lp->delHalfEdgePair(he1);
// modified at 2011-11-4 8:47:51, add a ring to the face
Loop *newl = new Loop();
lp->f->addLoop(newl);
return newl;
}
