Particle Settings are Locked After Editing #85068

New Issue

Ovionis · 2021-01-26T09:50:09+01:00

Ovionis commented

2021-01-26 09:50:09 +01:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 770/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 457.30

Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-01-18 23:28, hash: 09c7c63890

Short description of error
When you enter particle edit, for example to comb the hair, the settings in the Properties window become locked.
Some of these settings should be changeable, and also affect the editing process.

For example, the Add brush uses the Hair Length property from the Emission panel, to determine the length of new hair strands.
If you copy a particle system, to keep the default settings and you start editing it but forget to mark it as a single user (or you didn't want to at the time), then you later want to change a setting, the area to do so is now locked.

An example of a setting you may want to change individually later would be the Display/Render amounts from the Children/Viewport Display panels.

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 770/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 457.30 **Blender Version** Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-01-18 23:28, hash: `09c7c63890` **Short description of error** When you enter particle edit, for example to comb the hair, the settings in the Properties window become locked. Some of these settings should be changeable, and also affect the editing process. For example, the Add brush uses the Hair Length property from the Emission panel, to determine the length of new hair strands. If you copy a particle system, to keep the default settings and you start editing it but forget to mark it as a single user (or you didn't want to at the time), then you later want to change a setting, the area to do so is now locked. An example of a setting you may want to change individually later would be the Display/Render amounts from the Children/Viewport Display panels.

Ovionis commented

2021-01-26 09:50:09 +01:00

Added subscriber: @Phigon

Ovionis commented

2021-01-26 09:57:08 +01:00

\2.93\scripts\startup\bl_ui\properties_particle.py
Line #213
row.enabled = particle_panel_enabled(context, psys)
``Line #274 layout.enabled = particle_panel_enabled(context, psys) and (psys is None or not psys.has_multiple_caches)`

These two lines disable the UI, and the options aren't available anywhere else.
Nothing would functionally break for users being able to control the properties after editing.
The lines can easily be switched from .enabled to .active, to show they're not being actively used anymore but still allow changes.

`\2.93\scripts\startup\bl_ui\properties_particle.py` ` Line #213` ` row.enabled = particle_panel_enabled(context, psys)` ``Line #274` ` layout.enabled = particle_panel_enabled(context, psys) and (psys is None or not psys.has_multiple_caches)` These two lines disable the UI, and the options aren't available anywhere else. Nothing would functionally break for users being able to control the properties after editing. The lines can easily be switched from `.enabled` to `.active`, to show they're not being actively used anymore but still allow changes.

Robert Guetzkow commented

2021-01-26 10:38:52 +01:00

Added subscriber: @rjg

Robert Guetzkow commented

2021-01-26 10:38:52 +01:00

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

Robert Guetzkow closed this issue

2021-01-26 10:38:52 +01:00

Robert Guetzkow commented

2021-01-26 10:38:52 +01:00

The deactivation of all particle settings after editing is intentional. Changing them after the edit is not supported. Additionally, the current particle system has reached its end of life and won't be receiving new features, like the ability to edit the properties afterwards. Hence, I have to close this ticket.

I also don't see how allowing the editing relates to copying a particle system, you would still have to make a single user copy to edit it independently from the original.

The deactivation of all particle settings after editing is intentional. Changing them after the edit is not supported. Additionally, the current particle system has reached its end of life and won't be receiving new features, like the ability to edit the properties afterwards. Hence, I have to close this ticket. I also don't see how allowing the editing relates to copying a particle system, you would still have to make a single user copy to edit it independently from the original.

Ovionis commented

2021-01-26 22:00:41 +01:00

Copied particles only retain the settings. It doesn't link the edits.
This is what it's like when the UI isn't locked: 2021-01-26 14-48-26.mp4

What I'm showing in order is:

Duplicating the particle system and making edits.
Changing the children display, which is linked because have the same particle linked.
Unlinking them by clicking make single user (from unlocked UI).

Adding hair with varying lengths, by editing the hair length (from unlocked UI).

Copied particles only retain the settings. It doesn't link the edits. This is what it's like when the UI isn't locked: [2021-01-26 14-48-26.mp4](https://archive.blender.org/developer/F9599141/2021-01-26_14-48-26.mp4) What I'm showing in order is: Duplicating the particle system and making edits. Changing the children display, which is linked because have the same particle linked. Unlinking them by clicking make single user (from unlocked UI). Adding hair with varying lengths, by editing the hair length (from unlocked UI).

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Particle Settings are Locked After Editing #85068