Particles - Hair - Even distribution is not even #43981

New Issue

Carlo Andreacchio · 2015-03-13T04:17:39+01:00

Carlo Andreacchio commented

2015-03-13 04:17:39 +01:00

System Information
Windows 7 x64 gtx580

Blender Version
Broken: c439d14 , 85c38e7
Worked:f9c7cbd

Short description of error
Even distribution is not even

Exact steps for others to reproduce the error

open attached blend file in build f9c7cbd
change particle number to 20000
remember what this looks like
open same blend file in 85c38e7
change particle number to 20000
notice how the distribution of hte particles isnt even

particlebug.blend

**System Information** Windows 7 x64 gtx580 **Blender Version** Broken: c439d14 , 85c38e7 Worked:f9c7cbd **Short description of error** Even distribution is not even **Exact steps for others to reproduce the error** 1. open attached blend file in build f9c7cbd 2. change particle number to 20000 3. remember what this looks like 4. open same blend file in 85c38e7 5. change particle number to 20000 6. notice how the distribution of hte particles isnt even [particlebug.blend](https://archive.blender.org/developer/F150373/particlebug.blend)

Carlo Andreacchio commented

2015-03-13 04:17:39 +01:00

Changed status to: 'Open'

Carlo Andreacchio commented

2015-03-13 04:17:39 +01:00

Added subscriber: @candreacchio

Lukas Tönne was assigned by Bastien Montagne

2015-03-13 09:39:43 +01:00

Bastien Montagne commented

2015-03-13 09:39:43 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2015-03-13 09:39:43 +01:00

Lukas shall know what’s happening here.

ronan ducluzeau commented

2015-03-13 11:46:51 +01:00

Added subscriber: @zeauro

ronan ducluzeau commented

2015-03-13 11:46:51 +01:00

Particle's stuff is related to topology.

Obviously, here. Ngon is the cause of this.

Particle's stuff is related to topology. Obviously, here. Ngon is the cause of this.

ronan ducluzeau commented

2015-03-13 12:19:29 +01:00

particles_not_even.blend

I was too quick. It is really scale of faces that is a problem.

Fortunately, problem is ignored when enabling interpolated children.

[particles_not_even.blend](https://archive.blender.org/developer/F150507/particles_not_even.blend) I was too quick. It is really scale of faces that is a problem. Fortunately, problem is ignored when enabling interpolated children.

Carlo Andreacchio commented

2015-03-17 00:47:47 +01:00

Children is not possible for our use of the hair... We use particles for object instancing... Our setup includes having random rotation over each particle, the children inherit the parents rotation, and not a unique rotation for each particle.

Carlo Andreacchio commented

2015-03-23 22:17:21 +01:00

Just wondering if there has been any update on this bug? Will it be backported into the 2.74 master?

Carlo Andreacchio commented

2015-04-09 09:49:53 +02:00

Hi,

We are running into this bug again and again in production usage and having to revert back to an earlier version of blender just to generate the particle systems.

Any word about this bug / whether it will be fixed anytime soon? It has nearly been a month.

Carlo

Hi, We are running into this bug again and again in production usage and having to revert back to an earlier version of blender just to generate the particle systems. Any word about this bug / whether it will be fixed anytime soon? It has nearly been a month. Carlo

blender-admin commented

2015-05-01 19:21:41 +02:00

This issue was referenced by 86f80c481c

This issue was referenced by 86f80c481cc1de4ddc722cd83913d2643c03474b

Brecht Van Lommel commented

2015-05-01 19:23:27 +02:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2015-05-01 19:23:27 +02:00

Brecht Van Lommel commented

2015-05-01 19:23:27 +02:00

Closed by commit 86f80c481c.