UV: tweak face select behavior

When the mouse cursor is inside the UV face,
extend the selection threshold.

This means when zoomed in, a face can always be selected when the cursor
is inside it.
In the case of multiple overlapping faces - the face with the closest
center is used.

----

Prior to 246efd7286f6187e4dd4b3edcc79cccb1746bb1d, the UV selection
threshold was scaled by the zoom level, so selecting a face when zoomed
in close would often often select faces even when the on-screen center
was outside the intended threshold.

Having a zoom-independent threshold may require more precision than
users are used to.

This change addresses this.

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/editors/uvedit/uvedit_intern.h b/source/blender/editors/uvedit/uvedit_intern.h
index 45d65e7070e..cd8fbd00316 100644
--- a/source/blender/editors/uvedit/uvedit_intern.h
+++ b/source/blender/editors/uvedit/uvedit_intern.h
@@ -93,10 +93,21 @@ bool uv_find_nearest_edge_multi(struct Scene *scene,
                                 const float co[2],
                                 struct UvNearestHit *hit);
 
+bool uv_find_nearest_face_ex(struct Scene *scene,
+                             struct Object *obedit,
+                             const float co[2],
+                             struct UvNearestHit *hit,
+                             const bool only_in_face);
 bool uv_find_nearest_face(struct Scene *scene,
                           struct Object *obedit,
                           const float co[2],
                           struct UvNearestHit *hit);
+bool uv_find_nearest_face_multi_ex(struct Scene *scene,
+                                   struct Object **objects,
+                                   const uint objects_len,
+                                   const float co[2],
+                                   struct UvNearestHit *hit,
+                                   const bool only_in_face);
 bool uv_find_nearest_face_multi(struct Scene *scene,
                                 struct Object **objects,
                                 const uint objects_len,