Blender Git Loki

Transform: shear redo support for other orientations

Shear gizmo now uses a single orientation and sets
different ortho axis instead of constructing a different matrix for
each handle - allowing the redo panel to select orientations.

Fix T61988: Bevel mitering on small objects.

When edges had small length (less than about .005) the angle
classification didn't work. Needed some normalization of vectors.

Fix typos related to units

Cleanup: use "_pad" prefix for pad vars

Cleanup: header guard names

Missed in file rename.

Fix T61945: Scaling with invalid snap distances

ApplySnapResize did not take into account invalid distances. Added check for this.

Reviewed By: Campbell Barton

Differential Revision: https://developer.blender.org/D4417

GP: Use unique names for instance objects

When instance objects linked, the name could not be unique.

GP: Check if Instance loop is needed

This reduces the loop time if the scene is not using instances.

GP: Optimize Instances drawing loop

Transform: refactor orientation naming and usasge

Transform orientation was previously related to constraints,
recent changes meant it was used even when not constraining to an axis.

Now transform orientation is separate from axis constraints.

Correct error in recent transform refactor

DRW: disable wide edges when face-dots are used

Users who prefer to use face dot's don't get an advantage from drawing
thicker wire.

Requested by @ward

Cleanup: remove runtime structs from DNA

makesdna: enforce use of '_pad' naming convention

Cleanup: use '_pad' convention for padding in all DNA structs

Avoids mixing these in with regular variables in code-completion.

Use char for pad members except for 'void *', to make size clearer.

Removed/shrink a few redundant padding vars which were >= 8 bytes.

Cleanup: remove runtime structs from DNA

Cleanup: remove unused Material.pr_light

Also no need for 14 bytes of padding.

Cleanup: file rename lamp -> light

Cleanup: rename lamp -> light

Cleanup: Main struct member names

Rename latt to lattice and don't use plural names.