bendGoal bendModifier BendModifier bendModifierWeight goal MaintainBend MaintainRotation maintainRotationWeight

void MaintainRotation ( ) Used to record rotation of the last bone for one frame. If MaintainRotation is not called and maintainRotationWeight > 0, the solver will maintain the rotation of the last bone as it was before solving the IK. You will probably need this if you wanted to maintain the animated rotation of a foot despite of any other IK solver that manipulates its parents' rotation. So you would call MaintainRotation() in LateUpdate() after animation and before updating the Spine IK solver that would change the foot's rotation.