Object A is facing a curtain direction.
Object C is A's child's child's... child.
So A is the root parent of C.
When i rotate A, C follows A to rotate. What i want is constrain C's orientation while rotating A.
For instance, keep the angle between C's local Z axis & world's Z axis less than 20 degrees, how can i achieve that?
I tried to limit C's Z location, but it doesn't constrain A's rotation, and their relative position doesn't keep constant any more.
I'm using bones, but with empties or objects it's the same.
In my example socket bone is child of B, which is child of A. C doesn't have any parent.
In rest pose, all bones are pointing up (Z axis).
C has a copy loc, copy rot, copy scale targeting Socket (World space).
Then it has a limit rotation +- 20 degrees on both X and Z axis (Local space).
If the animation has some jumps between certain values, change the order from Default to XZY or ZXY, making sure that the central axis (Z or X) never gets close to 90 degrees, to avoid Gimbal lock.
