I can't code, so I'm humbly putting this request to the coding comunity to which we all owe so much:

I would love to see a feature that would allow you to lock a bones rotation in the x,y,z axis or any combination. This way you could make a ball joint, hinge joint, or a twist joint. It would also give you more control over IK solver behavior.

Perhaps it could be added to the selection of possible constraints pulldown.

the locked track constraint can be used to do this

rather than the user animating the roation of the bone directly, they instead move another bone which the bone has a locked track constraint to

a locked track constraint will only rotate the bone around one axis...

Thanks for the tip, I didn't know about that one.

It works well for a rotational movement, but the problem of trying to easily constrain a bone to a "twisting" motion about it's y-axis remains.

bob_dog wrote:

I can't code, so I'm humbly putting this request to the coding comunity to which we all owe so much: I would love to see a feature that would allow you to lock a bones rotation in the x,y,z axis or any combination. This way you could make a ball joint, hinge joint, or a twist joint. It would also give you more control over IK solver behavior. Perhaps it could be added to the selection of possible constraints pulldown.

agree, i've made such proposals already.. without success but i hope that in the future this will be implemented. i think this could also speed up iK-calculations, since the possible rotation axes are reduced.

best thing would be to see possible for every object type (useful for mechanical rigs)

marin