Blender Git Loki

UI: use vertical navigation buttons

This addresses crowding in the top right area of the view
with the existing header and tool header.

D5670 by @CandleComet

Fix T55745: Checker de-select, inconsistent selection

With these changes, successive selections result in an even pattern.

UI: Rename Select tool to Tweak tool

'Tweak' better communicates what this tool is for

Differential Revision: https://developer.blender.org/D5597

Reviewers: Brecht, Campbell Barton

skip matrix interpolation when not necessary

move AttributesRef to BKE namespace

more accurate runtime type checking in debug builds

Fix T69469: Overrun in file action type RNA enum

Think it was harmless in practice since we didn't actually enumerate the
items, only count them and access the set value. Still...

Merge branch 'master' into functions

Armature: add Inherit Scale options to remove shear or average the scale.

As an inherent property of matrix-based transformation math, non-
uniform scaling of a parent bone induces shear into the transform
matrix of any rotated child. Such matrices cannot be cleanly
decomposed into a combination of location/rotation/scale, which
causes issues for rigging and animation tools.

Blender bones have options to exclude rotation and/or scale from the
inherited transformation, but don't have any support for removing the
often undesired shear component. That goal requires replacing simple
parenting with a combination of multiple bones and constraints. The
same is true about the goal of inheriting some scale, but completely
avoiding shear.

This patch replaces the old Inherit Scale checkbox with a enum that
supports multiple options:

* Full: inherit all effects of scale, like with enabled Inherit Scale.

* Fix Shear: removes shear from the final inherited transformation.

The cleanup math is specifically designed to preserve the main
axis of the bone, its length and total volume, and minimally
affect roll on average. It however will not prevent reappearance
of shear due to local rotation of the child or its children.

* Average: inherit uniform scale that represents the parent volume.

This is the simplest foolproof solution that will inherit some
scale without ever causing shear.

* None: completely remove scale and shear.

* None (Legacy): old disabled Inherit Scale checkbox.

This mode does not handle parent shear in any way, so the child
is likely to end up having both scale and shear. It is retained
for backward compatibility.

Since many rigging-related addons access the use_inherit_scale
property from Python, it is retained as a backward compatibility
stub that provides the old functionality.

As a side effect of reworking the code, this also fixes a matrix
multiplication order bug in the Inherit Rotation code, which caused
the parent local scale to be applied in world space. In rigger
opinion this option is useless in production rigs, so this fix
should not be a problem.

Reviewers: brecht

Differential Revision: https://developer.blender.org/D5588

LANPR: qi_begin/end => level_start/end

Cleanup: Make format.

LANPR: LANPR_LineType::enabled => use.

LANPR: Line component description use "filter".

LANPR: Fix definitions in LANPR_LineType.

LANPR: Header inclusion order fixes.

LANPR: Remove "ignore_lanpr" in edge split modifier.

LANPR: Fix some code style based on recommendations.

Fix T63755: Area Stretching Overlay

Support for UV Stretching overlay during multi object editing. The
VBO now holds the ratios per fase. In the shader these ratios will
be compared against the global ratios. The global rations are created
from all selected objects.

The current implementation does not fit well with the draw module. The
plan is to move the drawing of other spaces towards the draw manager what
leads to a better fit. Currently the details on this solution is unclear
but this requirement will become an attentionpoint in the future design.

Reviewed By: fclem

Differential Revision: https://developer.blender.org/D5665

LANPR: python cleanups.

LANPR: Add licence header in all files.