This patch introduces some optimizations to Clay Strips, resulting in a
speedup of approximately 1.22x.
- The translations are calculated more efficiently using the local
space, similar to the approach used for the Plane brush.
- Plane trimming is computed in local space.
- Strength is applied to the offset vector, avoiding an extra per-vertex
multiplication.
- The local space is constructed such that vertices affected by
the brush have a positive z-coordinate.
Note: this patch doesn't alter the way the brush works. Any
difference should be considered a bug.
Pull Request: https://projects.blender.org/blender/blender/pulls/137558
e2b9839aea