There was some fuzzyness in `region_overlap_fix()`, using an 'other side' region
as ref to move current one in case their rect would intersect...
New code is a bit more complex, but should handle nicely all situations, mostly
ensuring we only translate an overlap if we find a previous one **on the same side**,
and ensuring we also never have intersecting overlapping regions from different sides
(since this does not work nice at all).
It now uses the tile size to split the job. For CPU this may add
overhead, but for GPU this is highly needed.
Reviewers: sergey
Differential Revision: https://developer.blender.org/D690
Indeed, constructive modifiers are highly likely to modify CDLayers like vgroups or vcols!
See vertexgroup2.blend file ({F93770}) in T40523, especially obvious with subsurf modifier.
This solves the crash, but indices might be wrong after the separation.
There are loads of other ways to confuse hook indices in both meshes and
curves, for now considering this a TODO.
* Don't compute expf() for every step, instead sum the intermediate values and calculate it every N (8 for now) steps. This helps a few percent (~5% on a cube with wave texture) in my tests here.
If user drags away from initial position, menu changes to drag style and
returning to that position won't remake the menu click-style. Allows to
use the threshold indicator to cancel the pie.
Add precision mode to radial operator by keeping the shift key pressed.
Precision mode works by checking difference between absolute window
coordinates and the point where shift was pressed and adding those to
the distance between that point and the radial center. This allows
bigger negative/positive range than using a strict radial scheme.
Missed some passes in the previous commit. Now seems all the passes
are covered, at least with my understanding of the things.
There're some weird things going around with the refraction pass,
but that is caused by some other issue in the code. Would rather
call it a TODO for now.
Make pie menu item placement touch the radius from the internal side of
the buttons rather than placing on the center on the cirtcle. This
allows us to get rid of the separate visual angle property, also allows
for tighter placement of pies with a smaller radius without easily
overlapping.
Also pie menu title now always appears above the threshold indicator.
