What is Bone Space?

Development Character & Animation
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In animation graph, I was looking at “Transform Bone” node and there are 4 spaces in which you can transform the bone:

  • World Space: Sets the value (location or rotation) relative to world origin.
  • Component Space: Sets the value relative to Skeletal Mesh Component.
  • Parent Bone Space: Sets the value relative to the parent bone.
  • Bone Space: ??? Sets the value relative to what?

What is Bone Space?

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It is relative to that bone’s transform in the input pose. Note that in bone space Replace Existing and Add to Existing modes have the same effect. That is because the transform of a bone relative to itself is the identity transform.

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