Fix T67190: Edge Loop Select doesn't support non-manifold edges

- New Walker added `bmw_NonManifoldedgeWalker_type`.
- This walks over edges connected with 3 or more faces connected.

Ref D10497 with edits.

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/bmesh/intern/bmesh_walkers_private.h b/source/blender/bmesh/intern/bmesh_walkers_private.h
index 721f3c2c65b..2da4f290c76 100644
--- a/source/blender/bmesh/intern/bmesh_walkers_private.h
+++ b/source/blender/bmesh/intern/bmesh_walkers_private.h
@@ -84,6 +84,13 @@ typedef struct BMwEdgeboundaryWalker {
   BMEdge *e;
 } BMwEdgeboundaryWalker;
 
+typedef struct BMwNonManifoldEdgeLoopWalker {
+  BMwGenericWalker header;
+  BMEdge *start, *cur;
+  BMVert *startv, *lastv;
+  int face_count; /* face count around the edge. */
+} BMwNonManifoldEdgeLoopWalker;
+
 typedef struct BMwUVEdgeWalker {
   BMwGenericWalker header;
   BMLoop *l;