mirror error in particle system Hair #98030

New Issue

Carlos Bernal · 2022-05-11T01:39:34+02:00

Carlos Bernal commented

2022-05-11 01:39:34 +02:00

System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.59

Blender Version
Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash: cc66d1020c
Worked: (newest version of Blender that worked as expected)

Short description of error
mirror does not work in particle system hair

Exact steps for others to reproduce the error

Open attached blend file, click the mesh and create a new particle system set to hair, hair length: 0.02
Go to particle edit menu, select root in select menu
Deselect a half, click Ctrl + L (select linked) and press X delete particles
4, Select all and click mirror in particle menu
Select comb brush in order to grooming the hair, make sure that mirror in X axis check box is active (tool options)
Grooming the hair and see that in one half the mirror dosen´t work

mirror error particle system hair.blend

{F13066379, size=full}

Thanks in advance!

[Based on the default startup or an attached .blend file (as simple as possible)]

**System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.59 **Blender Version** Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash: `cc66d1020c` Worked: (newest version of Blender that worked as expected) **Short description of error** mirror does not work in particle system hair **Exact steps for others to reproduce the error** 1. Open attached blend file, click the mesh and create a new particle system set to hair, hair length: 0.02 2. Go to particle edit menu, select root in select menu 3. Deselect a half, click Ctrl + L (select linked) and press X delete particles 4, Select all and click mirror in particle menu 5. Select comb brush in order to grooming the hair, make sure that mirror in X axis check box is active (tool options) 6. Grooming the hair and see that in one half the mirror dosen´t work [mirror error particle system hair.blend](https://archive.blender.org/developer/F13066370/mirror_error_particle_system_hair.blend) {[F13066379](https://archive.blender.org/developer/F13066379/mirror_error.jpg), size=full} Thanks in advance! [Based on the default startup or an attached .blend file (as simple as possible)]

Carlos Bernal commented

2022-05-11 01:39:34 +02:00

Added subscriber: @MegaPixol

Pratik Borhade commented

2022-05-11 08:04:36 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-05-11 08:04:36 +02:00

Hi, thanks for the report.

Deselect a half

I'm not sure how to deselect half roots.

Hi, thanks for the report. > Deselect a half I'm not sure how to deselect half roots.

Omar Emara commented

2022-05-11 10:06:45 +02:00

Added subscribers: @lichtwerk, @OmarEmaraDev

Omar Emara commented

2022-05-11 10:06:45 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Omar Emara commented

2022-05-11 10:06:45 +02:00

@lichtwerk You handled similar reports like this before. So maybe you can tag this appropriately. This is about the mirror operator not the symmetrical combing and topology mirror is disabled.

Delete half of the mesh along the x axis and mirror it to make sure it is perfectly symmetrical.
Delete any hair in the new half.
Mirror the hair. They do not match the other half.

20220511-095634.mp4

@lichtwerk You handled similar reports like this before. So maybe you can tag this appropriately. This is about the mirror operator not the symmetrical combing and topology mirror is disabled. - Delete half of the mesh along the x axis and mirror it to make sure it is perfectly symmetrical. - Delete any hair in the new half. - Mirror the hair. They do not match the other half. [20220511-095634.mp4](https://archive.blender.org/developer/F13067107/20220511-095634.mp4)

Philipp Oeser commented

2022-05-11 13:46:22 +02:00

I can also repro, assume deeper investigations reg. old hair system are not justified (since the new one is now in active development).

Philipp Oeser commented

2022-05-12 21:40:58 +02:00

Hm, am I right that this is still working right in 3.0.0?
And broken in 3.0.1?
(you can check releases here https://download.blender.org/release/)

Then we might have shot us in the foot with 77694b571f

Hm, am I right that this is still working right in 3.0.0? And broken in 3.0.1? (you can check releases here https://download.blender.org/release/) Then we might have shot us in the foot with 77694b571f

Philipp Oeser commented

2022-05-13 15:49:53 +02:00

We also have #98076 (Regression: Particle mirror broken for particular mirrored mesh.) for this (abit more straightforward), will merge reports.

Philipp Oeser commented

2022-05-13 15:50:06 +02:00

Closed as duplicate of #98076

Philipp Oeser closed this issue

2022-05-13 15:50:06 +02:00

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mirror error in particle system Hair #98030