I have been banging my head all morning trying to get an action constraint to auto apply some shape keys to a bone. I was able to make an action to do exactly what I wanted, but I was having trouble getting the action constraint to show my keyframed shapekeys. It works when you scrub the time line, but not when you hook up the action to a bone. It turns out that the action constraint ignores all data other then the transformations of an object
I found this in the documents:
“Note that even if the constraint accepts the Mesh action type, only the Object, Pose and Constraint types are really working, as constraints can only affect objects’ or bones’ transform properties, and not meshes’ shapes… . Also note that only the object transformation (location, rotation, scale) is affected by the action, if the action contains keyframes for other properties they are ignored, as constraints do not influence those.”
Why is this the case? I would think using an action constraint to automate the use of corrective keyshapes would be much more intuitive (especially for me) to work with. For me, setting up multiple drivers is a pain and if the action contraint would pass all of the keyframed data, it would make for a much simpler system.
Anyone have any thoughts on this?