diff options
Diffstat (limited to 'source/blender/blenkernel/intern/mesh_evaluate.c')
| -rw-r--r-- | source/blender/blenkernel/intern/mesh_evaluate.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/mesh_evaluate.c b/source/blender/blenkernel/intern/mesh_evaluate.c index e28d50cbde4..2ea275cdfb0 100644 --- a/source/blender/blenkernel/intern/mesh_evaluate.c +++ b/source/blender/blenkernel/intern/mesh_evaluate.c @@ -2378,6 +2378,24 @@ float BKE_mesh_calc_poly_area(const MPoly *mpoly, const MLoop *loopstart, const } } +float BKE_mesh_calc_poly_uv_area(const MPoly *mpoly, const MLoopUV *uv_array) +{ + + int i, l_iter = mpoly->loopstart; + float area; + float(*vertexcos)[2] = BLI_array_alloca(vertexcos, (size_t)mpoly->totloop); + + /* pack vertex cos into an array for area_poly_v2 */ + for (i = 0; i < mpoly->totloop; i++, l_iter++) { + copy_v2_v2(vertexcos[i], uv_array[l_iter].uv); + } + + /* finally calculate the area */ + area = area_poly_v2((const float(*)[2])vertexcos, (unsigned int)mpoly->totloop); + + return area; +} + /** * Calculate the volume and volume-weighted centroid of the volume * formed by the polygon and the origin. |