Blender Git Loki

Merge branch 'master' into mesh-transfer-data

Merge branch 'master' into mesh-transfer-data

More fixes and refinements:

* Now edge projection starts to show some results (quite useful for things like edge seam transfer).
* Better handling of bitflags default 'interpolation' (binary-choose value representing the highest sum of weights).

Add new mapping code for M2MMAP_MODE_EDGE_EDGEINTERP_VNORPROJ.

This is similar to M2MMAP_MODE_POLY_POLYINTERP_PNORPROJ, but for edges.
Also fixed a bunch of logical flaws in this poly one.

All this remains 100% theory currently, not tested at all yet.

Also some minor cleanup.

Fix previous stupid commit about bvh precision! What we want here is ray radius, not
bvh creation epsilon.

BVHTree Mesh helpers: Add support for raycasting against verts/edges.

iNote: pure theoritical code, not tested at all yet!

Merge branch 'master' into mesh-transfer-data

Expose epsilon (precision) prop to user, for raycating against verts/edges it's absolutely needed!

Merge branch 'master' into mesh-transfer-data

Add 'face smooth' flag transfer, and some minor cleanup.

Mesh islands: use MemArena to handle memory here as well.

Clean up/slight rework of mesh islands data.

Now it should be ready for future more generic usage - we might actually want to support
islands for arbitrary mesh elem types, not only loops for UVs/splitnors.

Mesh2Mesh mapping: switch to MemArena mem handling.

Switch mesh bvhtree partial-building to use BLI_bitmap's.

Merge branch 'master' into mesh-transfer-data

Merge branch 'master' into mesh-transfer-data

First hook of islands system for Loop-data transfer.

Very basic tests with UVs seems to be working.

Merge branch 'master' into mesh-transfer-data

WIP

Merge branch 'master' into mesh-transfer-data