kannonier8/blender
1
0
Fork 0
forked from bartvdbraak/blender
Code Pull Requests Activity

BMesh: utility to split isolated loop regions

Browse Source
This commit is contained in:
Campbell Barton 2015-05-03 06:15:24 +10:00
parent 33cc5ed495
commit dd48ddd605
2 changed files with 41 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
source/blender/bmesh/intern/bmesh_core.c
View File

@ -2604,6 +2604,46 @@ BMVert *bmesh_urmv_loop_multi(
return v_new;
}
static void bmesh_edge_vert_swap__recursive(BMEdge *e, BMVert *v_dst, BMVert *v_src)
{
BMLoop *l_iter, *l_first;
BLI_assert(ELEM(v_src, e->v1, e->v2));
bmesh_disk_vert_replace(e, v_dst, v_src);
l_iter = l_first = e->l;
do {
if (l_iter->v == v_src) {
l_iter->v = v_dst;
if (BM_vert_in_edge(l_iter->prev->e, v_src)) {
bmesh_edge_vert_swap__recursive(l_iter->prev->e, v_dst, v_src);
}
}
else if (l_iter->next->v == v_src) {
l_iter->next->v = v_dst;
if (BM_vert_in_edge(l_iter->next->e, v_src)) {
bmesh_edge_vert_swap__recursive(l_iter->next->e, v_dst, v_src);
}
}
else {
BLI_assert(l_iter->prev->v != v_src);
}
} while ((l_iter = l_iter->radial_next) != l_first);
}
/**
* This function assumes l_sep is apart of a larger fan which has already been
* isolated by calling bmesh_edge_separate to segragate it radially.
*/
BMVert *bmesh_urmv_loop_region(BMesh *bm, BMLoop *l_sep)
{
BMVert *v_new = BM_vert_create(bm, l_sep->v->co, l_sep->v, BM_CREATE_NOP);
/* passing either 'l_sep->e', 'l_sep->prev->e' will work */
bmesh_edge_vert_swap__recursive(l_sep->e, v_new, l_sep->v);
BLI_assert(l_sep->v == v_new);
return v_new;
}
/**
* \brief Unglue Region Make Vert (URMV)

1
source/blender/bmesh/intern/bmesh_core.h
View File

@ -104,6 +104,7 @@ BMVert *bmesh_urmv(BMesh *bm, BMFace *f_sep, BMVert *v_sep);
BMVert *bmesh_urmv_loop(BMesh *bm, BMLoop *l_sep);
BMVert *bmesh_urmv_loop_multi(
BMesh *bm, BMLoop **larr, int larr_len);
BMVert *bmesh_urmv_loop_region(BMesh *bm, BMLoop *l_sep);
void bmesh_face_swap_data(BMFace *f_a, BMFace *f_b);