Blender Git Loki

Depsgraph: fix debug print crash on IK constraint without target.

Cleanup: rename 'ObData' to 'Object Data'

Fix T63587: 3D View clipping region crashes

Cleanup: doxy comments

Use doxy references to function and enums,
also correct some names which became out of sync.

Cleanup: move operator constants out of DNA

Also use doxy struct member references.

Gizmo: move transform to a persistent option

Based on feedback from animators, this is useful to keep as a view
option (as in 2.7x).

Now the transform gizmos can be enabled from the popover,
the tools still work for location/scale/rotation.
The transform tool has been removed.

See T63518

Keymap: warn when running poll on empty keymaps

Fix T62048: crash when turning off curve path animation with Spline IK.

Both fix missing depsgraph flag, and gracefully give up on missing data.

Fix T37500: implement Bendy bone segment deformation interpolation.

Previously B-Bone deformation mapped every vertex to just one
B-Bone segment. This results in abrupt transformation differences
between the sides of each threshold plane, reducing the quality
of B-Bone deformation and making the use of shape keys impractical.

This commit replaces this approach with a linear blend between
the two closest segment transformations, effectively representing
the B-Bone as two weight-blended plain bones for each vertex.

In order to distribute the interpolation more evenly along the
bone, segment matrices for deformation are now computed at points
between the segments and at the ends of the B-Bone. The computation
also uses the true tangents of the Bezier curve for the orientation.
The nodes at the end of the bone require some special handling to
deal with zero-length Bezier handles caused by a zero ease value.

The Copy Transforms constraint now also smoothly interpolates
rotation and scaling along the bone shape when enabled.

The initial version of the patch was submitted by @Sam200.

Differential Revision: https://developer.blender.org/D4635

Cleanup: add View3D_Runtime struct

Also remove 'matcap_icon'

readme: separate development links

Add development links and place under own heading.

Fix T63563: Grease pencil not visible when contained in a collection instanced in a foreign scene.

The check of DUPLI object was used, but as the original object was not in the scene, the VBO data was not available and the draw was empty.

Now, the function checks if the original data is in the scene, and set the object as not Dupli to generate the VBO data.

3D View: move gizmo draw options out of overlays

Gizmo's now have their own popover in preparation
for making transform gizmos accessible without having to use tools

See: T63518

Cleanup: add trailing commas to wrapped args

UI: remove popover button text in viewport header

Makes room in the header for other buttons to be added.

GPencil: Implement Opacity transform

Add Shift+F to transform points opacity in Edit mode

readme: initial minimal readme

Useful to link official resources when the repository is accessed via
3rd party hosting.

GPencil: Remove script console warning when object is None

Cleanup: style, use braces for the window manager

Fix T61935 Crash when importing Alembic from Meshroom

The Alembic importer can now deal with XForm-less objects. Apparently
MeshLab exports point clouds without parent transformation matrix (XForm in
Alembic-speak). We shouldn't warn about this, but handle it properly
instead.