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By Design

Votes

2

Found in

2017.1.2p2

Issue ID

973481

Regression

No

Parenting object when Inverse Kinematic is used causes physical object shift in world space and breaks animation

Animation

-

To reproduce:
1) Open attached project and scene
2) Play it

Expected steps:
3) Click Start IK
4) Click Stop IK - notice the hand movement
5) Click Set baseball parent
6) Start and Stop IK - notice how ball moves together in relation to hand
7) Reset ball's hierarchy to go back to step 2

Actual steps:
7) Click Start IK
8) Click Set baseball parent
Notice that the ball and hand move back and that Starting/Stopping IK creates no animation at all

Reproduced in 2017.1.2p2, 2018.1.0a7

  1. Resolution Note:

    You can't use a child object of the hand as the target position for the IK, because it causes a feedback loop. The hand moves, moving the target, moving the hand, moving the target.

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