Particle refresh issue when emit start and end time are the same #43818

New Issue

perfection cat · 2015-02-26T04:59:03+01:00

perfection cat commented

2015-02-26 04:59:03 +01:00

System Information
Windows XP/32bits Sp3

Blender Version
Broken: 2.73a , 2.71
Worked: unknown

Short description of error
Distribution setting of Particles is ignored

Exact steps for others to reproduce the error
I set distribution of Particles of Particle Setting in Grid, and distribution setting is ignored when I change a rendering method of Particle.
But it occurs only at the time of the first change.

**System Information** Windows XP/32bits Sp3 **Blender Version** Broken: 2.73a , 2.71 Worked: unknown **Short description of error** Distribution setting of Particles is ignored **Exact steps for others to reproduce the error** I set distribution of Particles of Particle Setting in Grid, and distribution setting is ignored when I change a rendering method of Particle. But it occurs only at the time of the first change.

perfection cat commented

2015-02-26 04:59:03 +01:00

Changed status to: 'Open'

perfection cat commented

2015-02-26 04:59:03 +01:00

Added subscriber: @sindra1961

blender-admin commented

2015-02-26 04:59:03 +01:00

#44244 was marked as duplicate of this issue

perfection cat commented

2015-02-26 05:06:44 +01:00

I set Grid distribution.

I change a rendering method of perticles.

I set Grid distribution. ![Firstscreen.png](https://archive.blender.org/developer/F145906/Firstscreen.png) I change a rendering method of perticles. ![Nextscreen.png](https://archive.blender.org/developer/F145908/Nextscreen.png)

ronan ducluzeau commented

2015-02-26 18:10:54 +01:00

Added subscriber: @zeauro

ronan ducluzeau commented

2015-02-26 18:10:54 +01:00

I have same problem with 2.73a. But it was solved in current master hash 60679a1.

I have same problem with 2.73a. But it was solved in current master hash 60679a1.

Julian Eisel commented

2015-02-26 21:59:46 +01:00

Added subscriber: @JulianEisel

Julian Eisel commented

2015-02-26 21:59:46 +01:00

@sindra1961, so could you test using the latest (Official, not Gooseberry!) build from buildbot ?

@sindra1961, so could you test using the latest (Official, not Gooseberry!) build from [buildbot ](https://builder.blender.org/download/)?

perfection cat commented

2015-02-27 00:15:12 +01:00

I use the latest edition of Official.
And even the latest edition that I just downloaded occurs.

version 2.73 (sub 8), branch b'master', commit date b'2015-02-26' b'10:46', hash b'd9fa9bf', b'Release'
(blender-2.73-d9fa9bf-win32.zip)

I tried a different procedure.
1.The first state

2.I turn on Hexagonal grid

3.I turn off Hexagonal grid

4.I change a rendering method of particles

I always download the latest edition from here.
https://builder.blender.org/download/

I use the latest edition of Official. And even the latest edition that I just downloaded occurs. version 2.73 (sub 8), branch b'master', commit date b'2015-02-26' b'10:46', hash b'd9fa9bf', b'Release' (blender-2.73-d9fa9bf-win32.zip) I tried a different procedure. 1.The first state ![Fig1.png](https://archive.blender.org/developer/F146041/Fig1.png) 2.I turn on Hexagonal grid ![Fig2.png](https://archive.blender.org/developer/F146043/Fig2.png) 3.I turn off Hexagonal grid ![Fig3.png](https://archive.blender.org/developer/F146045/Fig3.png) 4.I change a rendering method of particles ![Fig4.png](https://archive.blender.org/developer/F146047/Fig4.png) I always download the latest edition from here. https://builder.blender.org/download/

Julian Eisel commented

2015-03-02 17:44:23 +01:00

Ah I think I can see what you mean. @sindra1961, you mean the render type always assumes a non-Hexagonal grid until you turn on and off Hexagonal grid, right?

Lukas Tönne was assigned by Julian Eisel

2015-03-02 17:46:30 +01:00

Julian Eisel commented

2015-03-02 17:46:30 +01:00

I know you don't like having to spend time on particle bugs, but this looks like a rather easy thing... So if you wouldn't mind? :)

perfection cat commented

2015-03-03 01:51:25 +01:00

I think that a state just before that is restored.
The initial state that is a state before setting it in Grid is restored in the example which I reported first.
For example, I set Emit Form in Verts and set it in Volume next, and Emit Form is restored in a state of Verts when I set a rendering method last.

I think that a state just before that is restored. The initial state that is a state before setting it in Grid is restored in the example which I reported first. For example, I set Emit Form in Verts and set it in Volume next, and Emit Form is restored in a state of Verts when I set a rendering method last.

perfection cat commented

2015-03-03 01:59:45 +01:00

Because there are Emit Form three kinds, I nominate it for an example.
Emit Form becomes Faces first.
I change setting in order of next.
Volume
Verts
Faces
Volume
Verts
Faces
Finally I change a rendering method.
In this case Emit Form is restored in a state of Verts.
States before two to set a rendering method are always restored.

Because there are Emit Form three kinds, I nominate it for an example. Emit Form becomes Faces first. I change setting in order of next. Volume Verts Faces Volume Verts Faces Finally I change a rendering method. In this case Emit Form is restored in a state of Verts. States before two to set a rendering method are always restored.

ronan ducluzeau commented

2015-03-11 11:22:53 +01:00

Sory, I retested it and confirm it is still present in master.

It makes me think to this bug.
https://developer.blender.org/T43788

I am wondering if it is not UI related.
It seems to also happen when you are switching from a display type to another (Render,Point,Cross...)

Sory, I retested it and confirm it is still present in master. It makes me think to this bug. https://developer.blender.org/T43788 I am wondering if it is not UI related. It seems to also happen when you are switching from a display type to another (Render,Point,Cross...)

perfection cat commented

2015-03-13 03:29:24 +01:00

When a rendering method was changed first, it thinks that there are the data which are not merely initialized because it occurs.
May it memorize a state just before that?

When a rendering method was changed first, it thinks that there are the data which are not merely initialized because it occurs. May it memorize a state just before that?

perfection cat commented

2015-03-13 03:33:59 +01:00

I'm sorry, I rewrote it because translation was different.

perfection cat commented

2015-03-16 09:11:33 +01:00

It seemed to be a mistake once to have thought that it did not reappear when it occurred.
It can reappear again and again when I change a rendering method.

It seemed to be a mistake once to have thought that it did not reappear when it occurred. It can reappear again and again when I change a rendering method.

perfection cat commented

2015-04-07 10:02:53 +02:00

I want you to watch this image.
This changes nothing just to have added particle system to cube.
However, particle is displayed on upper edge.
A calculation of the initial state is wrong.

I want you to watch this image. This changes nothing just to have added particle system to cube. However, particle is displayed on upper edge. A calculation of the initial state is wrong. ![screen.png](https://archive.blender.org/developer/F159332/screen.png)

perfection cat commented

2015-04-28 09:48:33 +02:00

I understood a method to reproduce a state when particles system was added.

Open the attached file.
sample.blend
Add Particles system.

Set End frame of the Emission panel to 1.

The state displayed then does not accord with emit_from.
Change emit_from properly so that it accords with indication.
If you operate it in the following procedures, a state of a while ago can reappear.
Set emit_from to Faces.

Set emit_from to Volume.

Reset render_type of the Render panel to a default value.

Set render_type to Halo.

I understood a method to reproduce a state when particles system was added. Open the attached file. [sample.blend](https://archive.blender.org/developer/F167562/sample.blend) Add Particles system. ![sample1.png](https://archive.blender.org/developer/F167563/sample1.png) Set End frame of the Emission panel to 1. ![sample2.png](https://archive.blender.org/developer/F167565/sample2.png) The state displayed then does not accord with emit_from. Change emit_from properly so that it accords with indication. If you operate it in the following procedures, a state of a while ago can reappear. Set emit_from to Faces. ![sample3.png](https://archive.blender.org/developer/F167567/sample3.png) Set emit_from to Volume. ![sample4.png](https://archive.blender.org/developer/F167569/sample4.png) Reset render_type of the Render panel to a default value. ![sample5.png](https://archive.blender.org/developer/F167571/sample5.png) ![sample6.png](https://archive.blender.org/developer/F167573/sample6.png) Set render_type to Halo. ![sample7.png](https://archive.blender.org/developer/F167576/sample7.png)

perfection cat commented

2015-05-02 07:18:33 +02:00

May the start frame number of particle system begin with 0 internally?
Some contradiction is broken off when I suppose that a start frame of Emission starts from 0.

May the start frame number of particle system begin with 0 internally? Some contradiction is broken off when I suppose that a start frame of Emission starts from 0.

perfection cat commented

2015-05-02 07:51:28 +02:00

This is an image when I set particle system in Cube.

This is an image when I set end frame of the Emission panel to 1.

This is an image when I set start frame of the Emission panel to 1.

This is an image when I jumped in first frame in Time line.

Which is right first frame?

This is an image when I set particle system in Cube. ![generate_particle_system.png](https://archive.blender.org/developer/F169291/generate_particle_system.png) This is an image when I set end frame of the Emission panel to 1. ![set_end_frame_to_1.png](https://archive.blender.org/developer/F169293/set_end_frame_to_1.png) This is an image when I set start frame of the Emission panel to 1. ![set_start_frame_to_1.png](https://archive.blender.org/developer/F169295/set_start_frame_to_1.png) This is an image when I jumped in first frame in Time line. ![jump_to_first_frame.png](https://archive.blender.org/developer/F169297/jump_to_first_frame.png) Which is right first frame?

Brecht Van Lommel commented

2015-05-03 12:31:39 +02:00

Added subscribers: @mont29, @LukasTonne, @brecht

Brecht Van Lommel changed title from ~~(Particle System Setting) Distribution setting of Particles is ignored~~ to Particle refresh issue when emit start and end time are the same

2015-05-03 12:32:25 +02:00

perfection cat commented

2015-05-07 01:56:28 +02:00

I tested latest daily build.
version 2.74 (sub 5), branch b'master', commit date b'2015-05-05' b'20:34', hash b'c246e0c', b'Release'

I tested latest daily build. version 2.74 (sub 5), branch b'master', commit date b'2015-05-05' b'20:34', hash b'c246e0c', b'Release'

perfection cat commented

2015-05-28 05:41:11 +02:00

Because plural bugs are included to this thread, I make a different thread.
Even if distribution of Particles is set in Grid when 'Emit From' is Faces, it does not act definitely.

Because plural bugs are included to this thread, I make a different thread. [Even if distribution of Particles is set in Grid when 'Emit From' is Faces, it does not act definitely. ](https://developer.blender.org/T44865)

perfection cat commented

2015-05-28 06:00:39 +02:00

The phenomenon such as the title of the thread which brecht changed thinks that it has been already improved.
It is unknown which amendment it was improved by.

I confirmed it in the following versions.
version 2.74 (sub 5), branch b'master', commit date b'2015-05-27' b'23:07', hash b'46d8bcb', b'Release'

The phenomenon such as the title of the thread which brecht changed thinks that it has been already improved. It is unknown which amendment it was improved by. I confirmed it in the following versions. version 2.74 (sub 5), branch b'master', commit date b'2015-05-27' b'23:07', hash b'46d8bcb', b'Release'

perfection cat commented

2015-05-28 06:17:49 +02:00

Because plural bugs are included to this thread, I make a different thread.
Indication of Particles is different when I change 'Emit From'.

Because plural bugs are included to this thread, I make a different thread. [Indication of Particles is different when I change 'Emit From'. ](https://developer.blender.org/T44866)

perfection cat commented

2015-05-28 06:52:50 +02:00

I seemed to get a wrong confirmation method. It is not improved.
I confirmed it again, but results seem to be different before.
Nothing is replaced even if I change distribution.

I confirmed it in the following versions.
version 2.74 (sub 5), branch b'master', commit date b'2015-05-27' b'23:07', hash b'46d8bcb', b'Release'

I seemed to get a wrong confirmation method. It is not improved. I confirmed it again, but results seem to be different before. Nothing is replaced even if I change distribution. I confirmed it in the following versions. version 2.74 (sub 5), branch b'master', commit date b'2015-05-27' b'23:07', hash b'46d8bcb', b'Release'

perfection cat commented

2015-05-28 07:24:55 +02:00

I write the phenomenon that I reported in this thread again.

I attach a file.
HowParticlesRender.blend
The first state.

Change 'Emit From' to the following order.
Faces > Volume > Verts > Faces
Change 'How particles are rendered' to the following order.
Halo > None > Halo

'Emit From' is Faces, but particle set in verts is displayed.

Change 'Emit From' by the following order.
Faces > Verts > Volume > Faces
Change 'How particles are rendered' to the following order.
Halo > None > Halo

'Emit From' is Faces, but particle set in Volume is displayed.

version 2.74 (sub 5), branch b'master', commit date b'2015-05-27' b'23:07', hash b'46d8bcb', b'Release'

I write the phenomenon that I reported in this thread again. I attach a file. [HowParticlesRender.blend](https://archive.blender.org/developer/F180596/HowParticlesRender.blend) The first state. ![How1.png](https://archive.blender.org/developer/F180597/How1.png) Change 'Emit From' to the following order. Faces > Volume > Verts > Faces Change 'How particles are rendered' to the following order. Halo > None > Halo ![How3.png](https://archive.blender.org/developer/F180599/How3.png) 'Emit From' is Faces, but particle set in verts is displayed. Change 'Emit From' by the following order. Faces > Verts > Volume > Faces Change 'How particles are rendered' to the following order. Halo > None > Halo ![How2.png](https://archive.blender.org/developer/F180601/How2.png) 'Emit From' is Faces, but particle set in Volume is displayed. version 2.74 (sub 5), branch b'master', commit date b'2015-05-27' b'23:07', hash b'46d8bcb', b'Release'

Lukas Tönne commented

2015-06-22 11:28:57 +02:00

Changed status from 'Open' to: 'Archived'

Lukas Tönne closed this issue

2015-06-22 11:28:57 +02:00

Lukas Tönne commented

2015-06-22 11:28:58 +02:00

Particles are broken, needs rewrite.

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Particle refresh issue when emit start and end time are the same #43818