Blender Git Loki

"Fix" [#32033] In the execution result of with_automatic_weight, the difference is seen right and left.

This auto/heat vgroup creation seems to be fuzzy/unstable (each run gives a slightly different result). I have not the competences (nor time) to investigate that laplacian stuff, so for now just adding an option when parenting to an armature with envelope/heat, to mirror weights along the X axis (as it is done by default when doing it from the Weight Paint mode).