Triangulate with beautify caused a bug when there were existing edges
could make the bmesh-operator return an invalid face-map.
Now the beauty is calculated on the 2d-tri's resulting from polyfill,
its simpler and faster.
- selecting a boundary edge would randomly point in/outside the face (now point away).
- selecting 3 verts would use the first selected edge as the tangent (now use longest).
- selecting 1 vert betweem edges, uses the edges to define the tangent.
Turned out there was still quite a few cases were indices were set dirty,
but elem_index_dirty was not tagged accordingly (mostly for BM_LOOP,
but a few others as well). So probably this crash was not the only one
hidden here.
Hopefully all possible cases were catched this time!
We need to support cutting degenerate ngons, see: T39418
This commit disallows cuts across faces where the same vertices can create better cuts on different faces.
- could crash if triangulate attempted to create an existing face.
- tagging edges to rotate was unreliable, don't do this anymore.
now check if edge is in the array passed to the beauty function.
Quads: Beauty, Fixed, Fixed Alternate, Shortest Diagonal
Ngons: Beauty, Scanfill
* Shortest Diagonal is the default method in the modifier (popular
elsewhere), but beauty is the default in Ctrl+T).
* Remove the need for output slot and beauty operator to be called
after Clt+T
Patch with collaborations and reviewed by Campbell Barton
The ear loop method is potentially too slow (OˆN).
We are not using the 'beauty' option at the moment.
I'll incorporate that next.
(and later specific methods for quad splitting)
Patch done in collaboration (and reviewed by) with Campbell Barton.
Instead of having ifdef __GNUC__ all over the headers
to use special compiler's hints use a special file where
all things like this are concentrated.
Makes code easier to follow and allows to manage special
attributes in more efficient way.
Thanks Campbell for review!
