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By Design
Votes
0
Found in
5.5.0p1
Issue ID
933204
Regression
Yes
Changing the center of mass makes the Rigidbody constraints fail to lock
Steps to reproduce:
1. Download and open the attached project
2. Enter Playmode
Expected result: falling cube stops
Actual result: constraints fail and cube does not stop
Reproduced on 5.5.0b9, 5.5.4f, 5.6.2p4, 2017.1.0f3, 2017.2.0b3, 2017.3.0a1
Not reproduced on 5.4.5p1
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Resolution Note:
Rotational DoF lock is relative to mass-space (body's pose multiplied by TRS(center-of-mass, inertia rotation, one)). Setting center of mass will update inertia rotation too, and will make the DoF lock work relative to the new center of mass. Just visualise where the new CoM is and plot the axes of inertia tensor rotation.