Tool for shape animation for Maya. Correcting shape after animation. Using on any type of deformed meshes with skin, deformers, dynamic.. Using blendshapes after all history. Working in worldspace.
This tool using simple method. After all history om geometry creating blendshape node and pair targets on every key. Not usind delta, not finding any intermediate shapes, only final geometry.
When we start sculpting in some shape key, targets update from current frame, original geometry hidding but corrective shape recreating and this we editting.
After editting mesh and exit from scuplt mode, corrective shape delete and original geometry unhide. It have updated blendshape target. For user this transition fully invisible.
Of course Its all can be make manually, but it to complex for editting on many keys. Also if you change animation after edittind shape, and wish to edit this, you have to remove all corrective and making this from start.
But using this tool even after changing animation of the character allow continue make correctives and all target will be automatic updated.
In this video you can see process making custom deformations on simple box without any rigs.