Blender Git Commit Log

Add dynamic topology support to the PBVH

* Add BLI_pbvh_build_bmesh(), similar to the other PBVH builders but
specialized for BMesh. Whereas the PBVH leaf nodes for mesh and
grids only store a start-index and count into the primitive indices
array, the BMesh version uses GHashes to store the full set of faces
and vertices in leaf nodes

* Update PBVH iterator to handle BMesh

* Make some of the pbvh.c functions non-static so they can be used by
the new pbvh_bmesh code

* The BLI_pbvh_bmesh_update_topology() function is the main reason for
adding BMesh support to the PBVH. This function is used during a
sculpt stroke to dynamically collapse edges that are particular
short and subdivide edges that are particularly long.