Blender Git Loki

Merge branch 'master' into bmesh-boolean-experiment

Tessellate faces before transforming vertices

Without this, ngons were tessellated with their old normals & transformed vertices.

Support union & difference boolean operations

Rename vars to be less confusing

Merge branch 'master' into bmesh-boolean-experiment

Use BVH-Tree overlap to detect inside/outside

Possibly alternative to ray-casting, seems to give less flickering.
will keep both options open for now. (ifdef'd)

Fix error using diced faces, doing bvh lookups

Was accessing face loops of faces which were already cut,
this made the coordinates mismatch with the original faces (and the BVH tree).

Draw ray-casting lines to help debugging

These linkes are used to detect if the mesh is inside the other,
colored by number of hits.

Postpone removing faces until ray-casting is done

Use relative object transformations.

Also bmesh boolean when WITH_MOD_BOOLEAN disabled.

Use watertight intersection test

basic intersection boolean now works

BMesh intersect: Add function to check whether the point is inside the mesh

It gets the BVH tree and loop triangles as an input and checks whether the
given point is inside of the mesh represented by those data or not.

It is not optimized for speed yet and could have some numerical instabilities
which we'll improve later.

P.S. This function is currently unused.

Initial bmesh-boolean experiment

Currently only intersect

remove bmesh islands

quick test until we have proper test for which parts to remove.