diff options
Diffstat (limited to 'source/blender/editors/mesh/editmesh_utils.c')
-rw-r--r-- | source/blender/editors/mesh/editmesh_utils.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/source/blender/editors/mesh/editmesh_utils.c b/source/blender/editors/mesh/editmesh_utils.c index f6ffbec094e..bbc092d0a99 100644 --- a/source/blender/editors/mesh/editmesh_utils.c +++ b/source/blender/editors/mesh/editmesh_utils.c @@ -619,6 +619,44 @@ struct UvElement **BM_uv_element_map_ensure_head_table(struct UvElementMap *elem return element_map->head_table; } +int *BM_uv_element_map_ensure_unique_index(struct UvElementMap *element_map) +{ + if (!element_map->unique_index_table) { + element_map->unique_index_table = MEM_callocN( + element_map->total_uvs * sizeof(*element_map->unique_index_table), __func__); + + int j = 0; + for (int i = 0; i < element_map->total_uvs; i++) { + UvElement *element = element_map->storage + i; + if (!element->separate) { + continue; + } + BLI_assert(0 <= j); + BLI_assert(j < element_map->total_unique_uvs); + while (element) { + element_map->unique_index_table[element - element_map->storage] = j; + element = element->next; + if (!element || element->separate) { + break; + } + } + j++; + } + BLI_assert(j == element_map->total_unique_uvs); + } + + return element_map->unique_index_table; +} + +int BM_uv_element_get_unique_index(struct UvElementMap *element_map, struct UvElement *child) +{ + int *unique_index = BM_uv_element_map_ensure_unique_index(element_map); + int index = child - element_map->storage; + BLI_assert(0 <= index); + BLI_assert(index < element_map->total_uvs); + return unique_index[index]; +} + #define INVALID_ISLAND ((uint)-1) static void bm_uv_assign_island(UvElementMap *element_map, @@ -1163,6 +1201,7 @@ void BM_uv_element_map_free(UvElementMap *element_map) MEM_SAFE_FREE(element_map->storage); MEM_SAFE_FREE(element_map->vertex); MEM_SAFE_FREE(element_map->head_table); + MEM_SAFE_FREE(element_map->unique_index_table); MEM_SAFE_FREE(element_map->island_indices); MEM_SAFE_FREE(element_map->island_total_uvs); MEM_SAFE_FREE(element_map->island_total_unique_uvs); |