How to Use IK
Before you utilize IK to animate your actor, be sure that you have opened the
3D Motion Key Editor.
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Double click on the target actor.
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Click the
3D Motion Key Editor button.
Alternatively, you may right click on the desired actor
and select Motion Menu >> Edit Motion.
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Change to the tool in the
3D Toolbar.
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Select a body part (in this case, the right hand) by double clicking it on the dummy in the 3D view or by
simply clicking it on the dummy graphic.
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Drag the axis of the gizmo on the 3D view.