Fix T82637: pack UV islands fails with some non-manifold meshes

Edges with 3 or more connected UV's caused UV pack to fail.

Instead of using functions from uvedit_parametrizer.c which are intended
specifically for ABF/LSCM unwrapping, use a simpler method for packing
which stores arrays of BMesh faces.

1 files changed, 15 insertions, 0 deletions

diff --git a/source/blender/editors/include/ED_uvedit.h b/source/blender/editors/include/ED_uvedit.h
index 629e77bd4f2..a55e97fff72 100644
--- a/source/blender/editors/include/ED_uvedit.h
+++ b/source/blender/editors/include/ED_uvedit.h
@@ -27,6 +27,7 @@
 extern "C" {
 #endif
 
+struct ARegion;
 struct ARegionType;
 struct BMEditMesh;
 struct BMFace;
@@ -233,6 +234,20 @@ void ED_image_draw_cursor(struct ARegion *region, const float cursor[2]);
 /* uvedit_buttons.c */
 void ED_uvedit_buttons_register(struct ARegionType *art);
 
+/* uvedit_islands.c */
+struct UVPackIsland_Params {
+  uint rotate : 1;
+  /** -1 not to align to axis, otherwise 0,1 for X,Y. */
+  int rotate_align_axis : 2;
+  uint only_selected_uvs : 1;
+  uint only_selected_faces : 1;
+  uint correct_aspect : 1;
+};
+void ED_uvedit_pack_islands_multi(const Scene *scene,
+                                  Object **objects,
+                                  const uint objects_len,
+                                  const struct UVPackIsland_Params *params);
+
 #ifdef __cplusplus
 }
 #endif