Blender Git Loki

Merge branch '28' into custom-manipulators

Replace array of properties with a named list

This is useful for Py/RNA access.

Add support for indexing arrays too.

fix for preconditioner and closed domains

closed domains require zero pressure fixing enabled for the preconditioner to work

fixed domain border collision key mapping

textual descriptions of borders did not match blender views

Added details in brush and few modification in files

filter out dead particles

mantaflow stores dead particles for internal purposes. in blender we just skip them, they dont need to be shown in the UI

Added Clip.png in gitignore

Fixed some issues when inserting new meshdata into a pbvh.

Buffers now get reset and primitives are written.
Works for the simplest cornercase: Alt+Leftclick draw on a mesh with one node outside of that node.

Implement lock axis in Sculpt grab brush

This is the first implementation to lock the axis while sculpt. In some extreme angles the result is not perfect, so maybe need a review.

We keep in this way while we found a better approach, maybe using the reprojection of the point as it is done when draw new strokes could work better.

Add arrow and dial manipulators with RNA access

Silhouette Operator basis setup.
First tests to generate Geometry, failed to integrate into the existing pbvh structure.
Experimental broken code.

Merge branch 'blender2.8' into custom-manipulators

Add missing UI options for sculpt and paint mode

The onion and mask buttons can be used in sculpt mode also.

RNA: Expose face-map manipulator to Python

Missed last commit

Rename intersect callback to test_select

Be specific since this isn't for general intersection tests.

Cleanup: shorten struct member names

For wmManipulatorMap the its clear from the context we're
operating on manipulators.

Remove unused widget/operator integration

While this is a useful feature, current integration is untested
and stored the operator in the wmManipulatorGroupType
instead of its instance.

Expose wmManipulatorGroupType.setup & refresh callbacks

improved manta particle step function

function now scales, translates particle data properly