- negplane.x = n->plane.x;
- negplane.y = n->plane.y;
- negplane.z = n->plane.z;
- negplane.nx = -n->plane.nx;
- negplane.ny = -n->plane.ny;
- negplane.nz = -n->plane.nz;
-
- clipres = clip_poly(clipped, &clipped_vnum, v, vnum, &negplane);
- /*assert(clipres == 0);*/
-
- if(!(nres = add_poly_tree(n->back, clipped, clipped_vnum))) {