I have a character who is rigged using 'Rigify'. I've put inverse kinematics on his two forearms and his two shins, and this problem is mainly a problem on his shins. I want his legs to be able to bend only like following:
But it can also bend this way, which I want to make impossible.
So basically - is there a way for an inverse kinematics rig to allow only bending in a certain direction?