in some cases, in particular when the the edge loops were not planar.
Now rather than finding the shortest distance between two vertices, one from
each edge loop and using that as a starting point, it now finds the smallest
sum of distances between all vertex pairs that would be connected.
Fix edge case for clamp_index() with any negative 'x' that is a
multiple of 'len', was returning 'len' which is invalid index.
Maybe the expression can be simplified back to a one-liner?
Now create the rotate edge in advance and copy its customdata (before joining the faces).
This commit also fixes an annoyance where tryangulating faces could create duplicate edges.
* name bmesh operator func's BMO_slot_buffer_* rather then BMO_slot_* since it wasnt obvious some only dealt with buffer, some both.
* more typechecks and asserts of BMO_ functions (I lost some time calling a map with a buffer function that failed silently).
* small speedup for extrude check - test if the edge is wire _before_ doign a hash lookup.
* ntreeCompositExecTree accessed 'ntree' before NULL check.
* BM_face_triangulate accessed 'f' before NULL check.
also quiet warning in BKE_text_to_curve() and add a check for BMesh bridge loops so it knows quicker if it can copy loop data or not.
