Blender cloth simulator air pressure enhancement #30941

New Issue

jz p · 2012-04-13T17:52:05+02:00

jz p commented

2012-04-13 17:52:05 +02:00

Group: Unstable (example)

%%%A simple air pressure feature to Blender cloth simulator, and spring length scaling factor, hope it will be useful for somebody.

The blenderartist post: http://blenderartists.org/forum/showthread.php?251816-Blender-cloth-simulator-air-pressure-enhancement you can find screenshots and videos here. (the patch in this link is a bit outdated)

The attachment is a patch against svn r45571.%%%

**Group**: Unstable (example) %%%A simple air pressure feature to Blender cloth simulator, and spring length scaling factor, hope it will be useful for somebody. The blenderartist post: http://blenderartists.org/forum/showthread.php?251816-Blender-cloth-simulator-air-pressure-enhancement you can find screenshots and videos here. (the patch in this link is a bit outdated) The attachment is a patch against svn r45571.%%%

jz p commented

2012-04-13 17:52:05 +02:00

Changed status to: 'Open'

Daniel Genrich commented

2012-04-15 14:15:16 +02:00

%%%Hello,

great patch. Stil wondering when Cloth will subsistute Softbodies ;)

Will check after 2.64. Thanks!%%%

%%%Hello, great patch. Stil wondering when Cloth will subsistute Softbodies ;) Will check after 2.64. Thanks!%%%

jz p commented

2013-03-16 07:11:55 +01:00

%%%Hi, I updated this patch to make it work with latest Blender. I also merged cloth sewing seams patch (#31269) to my patch, so I removed the spring length scaling factor (use negative value for cloth shrinking in #31269 instead)%%%

Darren powell commented

2015-09-01 20:00:58 +02:00

Added subscriber: @bireos

Steffen Dünner commented

2017-12-16 17:19:06 +01:00

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Demeter Dzadik commented

2019-08-04 22:51:49 +02:00

Added subscriber: @Mets

Sebastian Parborg commented

2019-08-08 18:58:40 +02:00

Added subscriber: @ZedDB

Sebastian Parborg commented

2019-08-08 18:58:40 +02:00

I've updated the patch to 2.80. But it only seems to work well on symmetrical, uniform meshes. Otherwise it will start sliding and floating around.
vol.patch

I'm guessing we will have to be smarter in how we apply the pressure on the mesh.

I've updated the patch to 2.80. But it only seems to work well on symmetrical, uniform meshes. Otherwise it will start sliding and floating around. [vol.patch](https://archive.blender.org/developer/F7654766/vol.patch) I'm guessing we will have to be smarter in how we apply the pressure on the mesh.

Sebastian Parborg commented

2019-08-08 22:38:15 +02:00

Fixed the symmetrical problems. Now it seems to work with the non uniform suzanne mesh!
vol_new.patch

recording.mp4

Fixed the symmetrical problems. Now it seems to work with the non uniform suzanne mesh! [vol_new.patch](https://archive.blender.org/developer/F7654989/vol_new.patch) [recording.mp4](https://archive.blender.org/developer/F7654992/recording.mp4)

jz p commented

2019-08-09 18:29:10 +02:00

In #30941#748885, @ZedDB wrote:
Fixed the symmetrical problems. Now it seems to work with the non uniform suzanne mesh!
vol_new.patch

Thanks for updating this patch to 2.80! I haven't touched the Blender code for years. Your demo video looks impressive.

I heard that in GSoC 2019 someone is implementing dynamic subdivision for Blender cloth simulation. I think later we should make this patch compatible with that.

> In #30941#748885, @ZedDB wrote: > Fixed the symmetrical problems. Now it seems to work with the non uniform suzanne mesh! > [vol_new.patch](https://archive.blender.org/developer/F7654989/vol_new.patch) Thanks for updating this patch to 2.80! I haven't touched the Blender code for years. Your demo video looks impressive. I heard that in GSoC 2019 someone is implementing dynamic subdivision for Blender cloth simulation. I think later we should make this patch compatible with that.

Sebastian Parborg commented

2019-08-11 15:38:28 +02:00

This patch is very straightforward and doesn't add that much complexity. So I will try to get this merged into 2.81.

Thank you for writing this code in the first place. I'm just sad that I didn't know about it until now.

This patch is very straightforward and doesn't add that much complexity. So I will try to get this merged into 2.81. Thank you for writing this code in the first place. I'm just sad that I didn't know about it until now.

Ish Bosamiya commented

2019-08-12 11:20:26 +02:00

Added subscriber: @ishbosamiya

Ish Bosamiya commented

2019-08-12 11:40:38 +02:00

Adding air pressure will definitely be useful.

Based on the changes in the patch and some initial testing with the adaptive remeshing branch, it doesn't seem like anything extra will need to be done for it to work with adaptive remeshing.

Adding air pressure will definitely be useful. Based on the changes in the patch and some initial testing with the adaptive remeshing branch, it doesn't seem like anything extra will need to be done for it to work with adaptive remeshing.

Sebastian Parborg commented

2019-08-13 16:53:35 +02:00

I've uploaded my current take on this here: D5473

I've uploaded my current take on this here: [D5473](https://archive.blender.org/developer/D5473)

Everton Schneider commented

2019-08-14 01:38:11 +02:00

Added subscriber: @EvertonSchneider

Julien Leménicier commented

2019-08-14 17:06:23 +02:00

Added subscriber: @lemenicier_julien

Ralf Mrowka commented

2019-08-20 23:51:25 +02:00

Added subscriber: @ralf_mr

Ralf Mrowka commented

2019-08-20 23:51:25 +02:00

I find the pressure simulation very useful. I would highly appreciate an integration in version 2.81 of blender. Thank you all for the wonderful work.