Is there a way to constrain IK handles to a planar motion? In humans, joints only ever move in a plane and any rotations happen about the root joint. Maya uses rotate plane solvers to simulate this. Can I do similar in Blender?
I’m also wondering if you can lock movements in general. For example if I only want to allow a bone to rotate in z but not x or y.
A final question, is there a way to transform in 2 axes at once but not the 3rd? Like you can do s to scale a model in all directions and s then the axis name to scale in one axis but is there a way to scale in both x and y simultaneously but not z without doing it separately in x then in y?