Blender Git Loki

Remove Composition data structure

This simplifies the code and speeds up accessing function
bodies and type extensions. Now, a lock is only necessary
when create new bodies or extensions.

This is achieved at the cost of having a slighly less generic
system, because we have to give e.g. different function body
types different IDs. Since the number of different types
is expected to be fairly low, this trade off is worth it.

Fix T67459: Dope Editor, muting channels with shortcut doesn't work

Cloth: improved flip checking

No longer relies on edge_size_with_vert() which means no longer need to figure out why it returns 100.0f.

Tracking: Give more reasonable error message directly in the interface

Before this the message could be too generic which was simply saying
that console is to be checked. This isn't very useful in cases when
we know that reconstruction is failed because of lack of good keyframes
or failure of initial reconstruction if there is no enough parallax
on the selected keyframes.

Fix T67089: Solve camera motion generates "Solve error: nan"

The code was missing some checks for whether keyframe selection
went successfully and whether reconstruction has been successfully
initialized.

The interface still gives quite generic message, with the details
printed to the console. This can be addressed separately.

fix: unreported: Collada using incompatible Enumeration types for compare

simplify virtual node tree usage

Fix T67334: Blender does not exit after saving

Cloth: switch to different method for collapse edges

This method is significantly different and does not depend on edge_size_with_vert() which means that there is no error with that size becoming 100.0f.
Now need to change flip edges to use the new edge metric method.

GPencil: Remove duplicate self overlap option

The option was duplicated for textured strokes.

Fix T65386 Eevee: Crash after baking indirect lights or cubemap

I'm not sure this fixes the root of the problem. The file from the ticket
seems to have been corrupted in some way.

We MIGHT want this in 2.80.

Cleanup: Rearrange the order of isect_ray_ray_v3 parameters

And remove redundant add operation.

Fix T67299: UV Stretching Overlay of type "Area" fail when any face is hidden

We want to include this for 2.80

Fix T65402: Syntax error causes CPython assert

USD: reduce hair colours to one colour per hair strand

The colours weren't written correctly, so this just reduces the amount of
data that's written. This'll probably be used until we decide to evaluate
the hair material.

Merge branch 'master' into greasepencil-object

Merge branch 'master' into temp-gpencil-drw-engine

Merge branch 'master' into functions

Fix T67450: Crash undoing edit-mode lattice resolution

Cloth: better edge_size calculation