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Description

rig prototype that can mutate over time in real-time, while fully preserving it's animation.

Instructions

  • open mutable_rig.ma in a maya session.
  • run mutable_rig.py in the script editor to make the required code available to the included scriptNode.
  • scrub through the timeline to load/switch rigs. There's a rig change at frame 10.

Technical considerations

There are plenty of ways to implement this in a pipeline; kept this proof of concept intentionally simple.

Set up in maya for familiarity, but a real-time engine would probably do better.

Maya crashes easily unless we defer the script's evaluation, which compromises updates during playback and introduces a lag where updates only happen after a 2nd time change.

Reading animCurve keyframes directly solves the issue, but it isn't guaranteed to exist. Using a scriptJob or callback listening to value changes didn't make it any better but would also be needed to account for user interaction over the current frame.