UV Snap: minor uv-nearest optimizations

- Pass in the snap distance
  (to avoid comparisons in the multi-object version).
- Loop directly over BMLoop's (without using the iterator).
- Use squared distance instead of manhattan.

1 files changed, 5 insertions, 4 deletions

diff --git a/source/blender/editors/include/ED_uvedit.h b/source/blender/editors/include/ED_uvedit.h
index efe294d621e..433c7c7fa48 100644
--- a/source/blender/editors/include/ED_uvedit.h
+++ b/source/blender/editors/include/ED_uvedit.h
@@ -110,11 +110,12 @@ void uvedit_uv_select_disable(
         const int cd_loop_uv_offset);
 
 bool ED_uvedit_nearest_uv(
-        struct Scene *scene, struct Object *obedit, struct Image *ima,
-        const float co[2], float r_uv[2]);
+        struct Scene *scene, struct Object *obedit, struct Image *ima, const float co[2],
+        float *dist_sq, float r_uv[2]);
 bool ED_uvedit_nearest_uv_multi(
-        struct Scene *scene, struct Image *ima, struct Object **objects_edit,
-        const uint objects_len, const float co[2], float r_uv[2]);
+        struct Scene *scene, struct Image *ima,
+        struct Object **objects, const uint objects_len, const float co[2],
+        float *dist_sq, float r_uv[2]);
 
 void ED_uvedit_get_aspect(struct Scene *scene, struct Object *ob, struct BMesh *em, float *aspx, float *aspy);