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Overview

Copy Bone copies data from one bone to another:
  • Copy From — bone to copy data from.
  • Copy To — bone to copy data to.
  • Copy Mode — defines how the pose will be copied:
    • (Default) Replace will replace the target transform.
    • Add will accumulate the target transform.
  • Copy Position — whether to copy position.
  • Copy Rotation — whether to copy rotation
  • Copy Position — whether to copy scale.

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Use-cases

This modifier is mostly useful for IK bones. For example, here is a setup that’s used in the CAS Demo:
  1. Copy data from real bones to IK (e.g., from right hand to IK hand_r).
  2. Animate the IK target (e.g., add translation to IK hand_r).
  3. Apply IK (e.g., Two Bone IK for the right arm).

Simple IK setup example.