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* Merely a re-implementation of core split algorithm for BMesh, taking advantage of topological data available.
* This code needs valid loop indices, so added BM_LOOP support to BM_mesh_elem_index_ensure() & co.
Reviewers: campbellbarton
Reviewed By: campbellbarton
CC: brecht
Differential Revision: https://developer.blender.org/D366
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place (pragmas were copied around).
also enable more strict warnings for BLF (which had some incorrect casts).
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changes to tool args would rebuild far too many files and these are mainly by modifiers outside of bmesh.
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vertex and edge),
also replace BM_face_create_quad_tri_v with BM_face_create_verts
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side in some cases it gets a bit confusing.
also correct edge-rotate where bool->flag conversion worked by accident.
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* fill-holes operator now takes advantage of new edge-net fill, works in many more cases then it did before.
* face-create that uses edge-net now initializes the normals based on surrounding geometry, only running normal calculation if there are no connected faces for a reference.
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previous code created faces with mixed face-flipping and could get very slow,
test with ~60,000 edges here hung my system for over 2min (didnt wait for it to finish), new code executes in about 1 second.
new code doesn't attempt to flip faces correctly, its quite involved to do so, especially when the new faces are not created adjacent to eachother.
so simpler to calculate normals afterwards.
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