I`m working on custom constraint and wonder how Maya does the connections to translate or rotate attribute, so they can be still changed. I will explain it more. If you make Maya constraint, you can still move constrained object around, even if there are connections. Actually Maya keyframes work the same way, you couldn`t animate really if once keyframe is connected object`s attribute values couldn`t change. So I wonder if this is internal way of plug evaluation or I need specific type of attribute (constraintTranslate seems to be simple double3 type). Does anyone know how this works? thanks.
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