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Third Party Issue
Votes
0
Found in
2020.3.35f1
2021.3.5f1
2022.1.6f1
2022.2.0a17
2023.1.0a2
2023.2.0a1
Issue ID
UUM-7406
Regression
No
Inconsistent friction when comparing boxes rotating clockwise vs counterclockwise
How to reproduce:
1. Open the user's attached project
2. Open scene Scenes/SampleScene
3. Press the Play button and go to the Game view
Expected result: both GameObjects rotate symmetrically
Actual result: the Negative GameObject (left) rotates out of place
Reproducible with: 2019.4.39f1, 2020.3.34f1, 2021.3.3f1, 2022.1.1f1, 2022.2.0a13
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Resolution Note:
This is a complex issue inside PhysX (even with the latest PhysX 5). Nvidia is aware and looking into it but for now here are a few workarounds:
- Do not use the Patch Friction type, it only picks 2 out of 4 contacts and the result is never going to be symmetrical.
- Use the Two-Directional Friction type. It works on all 4 of the produced contacts and has the best chance of producing a symmetrical result.
- Bump us the velocity (and potentially position) iteration count to increase the convergence of the friction constraints