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* C: BM_vert_separate(...)
* py: bmesh.utils.vert_separate(vert, edges)
This splits off regions around the vertex, splitting on connected edges passed in a sequence.
also made minor changes
- rename python api functions _rip to _separate
- fixed bmesh iterator being iterable its self (some parts of python expect this)
- fix memory leak in bmesh python api.
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* bmesh.utils.face_vert_rip(f, v)
* bmesh.utils.loop_rip(l)
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when rotating multiple edges.
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.
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On a user level, edge rotate now works better with multiple edges selected, it wont make zero area faces or rotate edges into existing ones.
With a single edge selected - rotate is less strict and will allow ugly resulting faces but still checks on duplicate edges.
API:
* BM_edge_rotate now takes a flag, to optionally...
** check for existing edge
** splice edge (rotate and merge)
** check for degenerate resulting faces (overlapping geometry, zero area)
** beauty - only rotate to a better fit.
... this allows it to still be used as a low level API function since all checks can be skipped.
* BM_edge_rotate() now works a bit different, it find the new edge rotation before joining the faces - exposed by BM_edge_rotate_calc().
* Added api call bmesh_radial_faceloop_find_vert() - Radial Find a Vertex Loop in Face
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already did this).
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also fix py api: bmesh.utils.face_split(face, v1, v2)
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bm.verts.get(verts) / bm.faces.get(verts)
- use to find an edge or face from a vertex list passed.
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bmesh.utils.face_join(faces)
added a utility function for converting a list of python BMesh elements into a C array.
use for this face_join as well as BMesh.faces.new()
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also improved docstrings.
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data copies from the existing.
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bmesh.utils.vert_collapse_edge, vert_collapse_faces, vert_dissolve, face_split
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* bmesh.types, just allows access to BMVert, BMEdge etc.
* bmesh.utils, so far only added edge_split() function, this module will give access to mesh editing functions.
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