Blender Git Loki

Merge branch 'master' into functions

LANPR: collection GP target now working.

LANPR: collection and object usage flags now effective. object flags overrides modifier.

LANPR: Object usage flag is effective now.

LANPR: move "usage" settings into struct ObjectLANPR.

LANPR: separate thresholds for image/geometry space chaining.

LANPR: Fixed occlusion bugs in first-step chaining.

LANPR: shaders now support main color/thickness.

Merge branch 'master' into soc-2019-npr

Cleanup: Removed "shorty" which was a relic of the color evaulation for CurveMapping

Cleanup/Comments:
Small changes, new variable names, and changed/added comments

Removing and editing various comments

ProfileWidget: Improved drawing when zoomed out.

The fill polygon is now completed to fill up to the bottom and right edges
of the view, like we're visualizing the profile on the corner of a beveled
rectangle.

Merge branch 'master' into soc-2019-outliner

Synced Selection: Sync outliner selections to view layer

Outliner select operators now flush their selections to the
active view layer when synced selection is enabled.

USD: be more selective about what to export each frame

To prevent too large USD files, we now have a bit of a framework to only
write data on the first frame for non-animated objects. This needs more
work, though, as it can be made more selective.

USD: Initial support for exporting animated data

Mesh and transform animation are now written when passing `animation=True`
to the export operator. There is no inspection of whether an object is
actually animated or not, so this will likely export too much information
(each mesh is written for each frame in the scene).

The administration of which timecode to use for the export is left to the
file-format-specific concrete subclasses of `AbstractHierarchyIterator`;
the abstract iterator itself doesn't know anything about the passage of
time.

Synced Selection: Fix syncing not working

Removing some changes that were supposed to address extending
the selection, but they were preventing the replace selection
from behaving properly.

USD: Commented-out most debug prints

Things are starting to work, so the debug prints aren't necessary any more.
They will be completely removed at some point, but I'm keeping them in the
code for now so that I can quickly enable them when necessary.

No functional changes.

BKE_anim: added comment to explain the matrix `DupliObject.mat`

`DupliObject.mat` contains the world matrix of the duplicated object, and
this knowledge is now available in a comment.