Just a sandbox for me to experiment with Unity's animation rigging package: https://blogs.unity3d.com/2019/05/14/introducing-the-animation-rigging-preview-package-for-unity-2019-1/
I currently have a basic constraint that allows you to remap a transform from Source object to Destination object. For example, you could transform a translation in X of a source object from 0-1 (rack) to a rotation in Z of 0-360 (pinion).
Added a constraint that handles a 6DOF robotic arm, adapted from Meuse Robotics. (Needs some cleanup, probably)
Currently working on a simplistic RBF solver. This GIF shows a monobehaviour prototype, not an actual constraint [yet].