Blender Git Loki

Cleanup: MOD_explode: Sanitize code some more.

This happens to be a non-behavioral change, but previous code here was
*very* confusing, and only ended up generating expected results by mere
chance (since `facepa[i]` == `totpart` in case the face has no (valid)
particle, i.e. `pa == NULL`)...

Cleanup: MOD_Explode: sanitize face-without-particle case.

Systematically reset particle pointer to NULL and use it to detect
invalid particle case, instead of checking value of the face's
particle index everywhere in a confusing and prone-to-bug way
(see T70150 and previous commit).

No behavioral change expected here.

Fix T70150: Explode modifier crashes with empty vertex group.

There?s be a lot to say about that explode modifier code, for now just
follow other places in code... But the handling of 'invalid'/'unkown'
particle case is... quiet confusing to say the least.

UI: Move new sculpt mode tools to correct places in toolbar

Follows general logic, and are placed next to similar tools.

UI: Add missing toolbar icons for Sculpt Mode

GPencil: Fix missing last point when sculpt in Multiframe

This was a mistake when fixed the problem with multiframe sculpt. I missed change the index and use active point in the check.

Mathutils: expose the swing + twist Quaternion decomposition to Python.

This decomposition is useful in rigging, and involves a math trick.

GPencil: Performance improvement for Multiframe and Onion Skin

Before when Onion or Multiframe was enabled the VBO length was the total of points on the object for all frames and this results in a big size when the scene had a lot of frames.

Now, the size of VBO length is calculated more precisely and reduce the time to alloc the VBO.This also reduce memory footprint.

Cleanup: Fix comment mistake

GPencil: Apply transformed rotation only if needed

If there aren't modifiers or they are not transform type, the rotation is not needed.

GPencil: Use Object location instead of 3D cursor for Grab Brush

Instead to use the 3D cursor as reference point (legacy code), it would be better use the object location.

Tested by: @pepeland

GPencil: Remove Sculpt rotation effect for multiframe sculpt

As multiframe does not use modifiers, this is not required and only gets weird results.

Related to T70116

GPencil: More changes to use original data in multiframe sculpt

Related to T70116

GPencil: Multiframe Show only Edit lines was inverted

The flag was working in the oposite mode.

Related to T70116

GPencil: Copy temp color in multiframe

As the evaluated data is not calculated in multiframe, needs to have the original colors.

Related to T70116

GPencil: Rename function

GPencil: Fix error in previous commit

Related to T70116

GPencil: Use evaluated or original data in Sculpt for Multiframe

The evaluated frame is only available when the frame is the active one.

Related to T70116

GPencil: Fix unreported select not working in multiframe mode

The selection was not working because the evaluated frame was only working for active frame, so when the evaluation was changed to use eval data instead of original data, the data was not available and the loop did not use it.

Related to T70116

Cleanup: extra semicolon, comma warnings