diff options
author | Campbell Barton <ideasman42@gmail.com> | 2019-09-20 05:05:29 +0300 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2019-09-20 05:09:22 +0300 |
commit | fd51d5d4129699e505a426db04fca73c1c5bf8f9 (patch) | |
tree | 06b76d7673ca2e2ce1ec04013681430eb5110c6c /source/blender/blenkernel/intern | |
parent | 6dc7cefb785ead19ec7c54c01806c05032d29d77 (diff) |
Mesh: support face-maps when joining
Resolves T64320
Diffstat (limited to 'source/blender/blenkernel/intern')
-rw-r--r-- | source/blender/blenkernel/intern/object_facemap.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/object_facemap.c b/source/blender/blenkernel/intern/object_facemap.c index b3ebe9b5ffa..be96927ed63 100644 --- a/source/blender/blenkernel/intern/object_facemap.c +++ b/source/blender/blenkernel/intern/object_facemap.c @@ -261,3 +261,41 @@ bFaceMap *BKE_object_facemap_find_name(Object *ob, const char *name) { return BLI_findstring(&ob->fmaps, name, offsetof(bFaceMap, name)); } + +int *BKE_object_facemap_index_map_create(Object *ob_src, Object *ob_dst, int *r_map_len) +{ + /* Build src to merged mapping of facemap indices. */ + if (BLI_listbase_is_empty(&ob_src->fmaps) || BLI_listbase_is_empty(&ob_dst->fmaps)) { + *r_map_len = 0; + return NULL; + } + + *r_map_len = BLI_listbase_count(&ob_src->fmaps); + int *fmap_index_map = MEM_malloc_arrayN( + *r_map_len, sizeof(*fmap_index_map), "defgroup index map create"); + bool is_fmap_remap_needed = false; + + int i = 0; + for (bFaceMap *fmap_src = ob_src->fmaps.first; fmap_src; fmap_src = fmap_src->next, i++) { + fmap_index_map[i] = BKE_object_facemap_name_index(ob_dst, fmap_src->name); + is_fmap_remap_needed = is_fmap_remap_needed || (fmap_index_map[i] != i); + } + + if (!is_fmap_remap_needed) { + MEM_freeN(fmap_index_map); + fmap_index_map = NULL; + *r_map_len = 0; + } + + return fmap_index_map; +} + +void BKE_object_facemap_index_map_apply(int *fmap, int fmap_len, const int *map, int map_len) +{ + if (map == NULL || map_len == 0) { + return; + } + for (int i = 0; i < fmap_len; i++, fmap++) { + *fmap = (*fmap < map_len && *fmap != -1) ? map[*fmap] : -1; + } +} |