Hair Dynamics: Hair quality steps more than 1 results in increased collision reaction [like a multiplier] #65038

New Issue

Niko Maisuradze · 2019-05-23T17:34:58+02:00

Niko Maisuradze commented

2019-05-23 17:34:58 +02:00

System Information
Operating system: Windows-8-6.2.9200-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 388.71

Blender Version
Broken: version: 2.80 (sub 71), branch: blender2.7, commit date: 2019-05-22 00:34, hash: 0f98c05c8b
Worked: 2.79 latest daily, and official.

Short description of error
In a hair simulation, if quality steps are more than 1, hair collision doesn't work. Hair moves in random directions.

Exact steps for others to reproduce the error
Add plane, add hair particles to it. Add any collision object. Press play. As default quality steps is 5, hair collision wont work.

I know the whole particles physics thing is being reworked, but it would be great if this annoying bug could be fix till then.

**System Information** Operating system: Windows-8-6.2.9200-SP0 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 388.71 **Blender Version** Broken: version: 2.80 (sub 71), branch: blender2.7, commit date: 2019-05-22 00:34, hash: `0f98c05c8b` Worked: 2.79 latest daily, and official. **Short description of error** In a hair simulation, if quality steps are more than 1, hair collision doesn't work. Hair moves in random directions. **Exact steps for others to reproduce the error** Add plane, add hair particles to it. Add any collision object. Press play. As default quality steps is 5, hair collision wont work. I know the whole particles physics thing is being reworked, but it would be great if this annoying bug could be fix till then.

Niko Maisuradze commented

2019-05-23 17:34:58 +02:00

Added subscriber: @NikoMaisuradze

Sebastian Parborg commented

2019-06-12 16:55:57 +02:00

Added subscriber: @ZedDB

Sebastian Parborg commented

2019-06-12 16:55:57 +02:00

This comment was removed by @ZedDB

*This comment was removed by @ZedDB*

Luca Rood was assigned by Sebastian Parborg

2019-06-12 17:30:08 +02:00

Philipp Oeser changed title from ~~Hair quality steps more than 1 results in hair random motion on collision~~ to Hair Dynamics: Hair quality steps more than 1 results in hair random motion on collision

2019-09-04 11:51:27 +02:00

Philipp Oeser commented

2019-09-04 12:06:38 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-09-04 12:06:38 +02:00

Qualitiy Steps seems to act as some sort of multiplier on the collision force [bad].

T65038_279.blend
Just open the file in 2.79 and 2.8, with Quality Steps = 1 these have comparable results, increasing Qualitiy Steps will also increase collision reaction in 2.8 [not in 2.79]

`Qualitiy Steps` seems to act as some sort of multiplier on the collision force [bad]. [T65038_279.blend](https://archive.blender.org/developer/F7716186/T65038_279.blend) Just open the file in 2.79 and 2.8, with `Quality Steps` = 1 these have comparable results, increasing `Qualitiy Steps` will also increase collision reaction in 2.8 [not in 2.79]

Philipp Oeser changed title from ~~Hair Dynamics: Hair quality steps more than 1 results in hair random motion on collision~~ to Hair Dynamics: Hair quality steps more than 1 results in increased collision reaction [like a multiplier]

2019-09-04 12:07:49 +02:00

blender-admin commented

2019-09-04 19:33:26 +02:00

This issue was referenced by e52ad1835a

This issue was referenced by e52ad1835a6aaefab389b173728b9bb7ef2e754a

Philipp Oeser commented

2019-09-04 21:10:41 +02:00

Changed status from 'Open' to: 'Resolved'

Philipp Oeser closed this issue

2019-09-04 21:10:41 +02:00

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Hair Dynamics: Hair quality steps more than 1 results in increased collision reaction [like a multiplier] #65038