Page MenuHome

PhysicsProject
ActivePublic

Details

Description

Physics simulation systems including rigid bodies, cloth, softbodies, smoke fluids and particles.

Developers

Bullet: @Erwin Coumans (erwin)
Rigid Body: @Sergej Reich (sergof)
Cloth: @Daniel Genrich (genscher)
Smoke: @Miika Hamalainen (miikah) @Daniel Genrich (genscher)
Fluids: @Daniel Genrich (genscher) @Nils Thuerey (n_t)
Particles: @Janne Karhu (jhk) @Lukas Toenne (lukastoenne)
Softbody: @Jens Ole Wund(bjornmose) (bjornmose)

Recent Activity

Tue, Mar 2

Nikhil Shringarpurey (Nikhil.Net) added a comment to T86199: Error when adding custom fluid diffusion preset.

Ignore the mention, please - it was incorrectly linked when I had pasted in a commit number.

Tue, Mar 2, 8:39 PM · Good First Issue, Nodes & Physics, BF Blender
Nikhil Shringarpurey (Nikhil.Net) updated the task description for T86199: Error when adding custom fluid diffusion preset.
Tue, Mar 2, 7:12 PM · Good First Issue, Nodes & Physics, BF Blender
Nikhil Shringarpurey (Nikhil.Net) updated the task description for T86199: Error when adding custom fluid diffusion preset.
Tue, Mar 2, 6:46 PM · Good First Issue, Nodes & Physics, BF Blender
Dalai Felinto (dfelinto) moved T71588: Hair particles crashing when baking or animating from Backlog to Bugs on the Nodes & Physics board.
Tue, Mar 2, 11:33 AM · Nodes & Physics, Physics, BF Blender
Dalai Felinto (dfelinto) moved T73232: Mantaflow: Adaptive Domain breaks Dissolve if 'slow' is checked from Backlog to Bugs on the Nodes & Physics board.
Tue, Mar 2, 11:33 AM · Nodes & Physics, Physics, BF Blender
Dalai Felinto (dfelinto) moved T73921: Eevee volume render test memory leak in Mantaflow from Backlog to Bugs on the Nodes & Physics board.
Tue, Mar 2, 11:33 AM · Physics, Nodes & Physics, BF Blender
Dalai Felinto (dfelinto) moved T74737: Render cloth animation does not resets cache from Backlog to Bugs on the Nodes & Physics board.
Tue, Mar 2, 11:33 AM · Physics, Nodes & Physics, BF Blender
Dalai Felinto (dfelinto) moved T75557: Simple ball shooting animation not working as before from Backlog to Bugs on the Nodes & Physics board.
Tue, Mar 2, 11:33 AM · Physics, Nodes & Physics, BF Blender
Dalai Felinto (dfelinto) moved T80752: Mouse movement causes crash during particle bake from Backlog to Bugs on the Nodes & Physics board.
Tue, Mar 2, 11:32 AM · Nodes & Physics, Physics, BF Blender
Dalai Felinto (dfelinto) moved T80828: Drivers don't refresh simulations. from Backlog to Bugs on the Nodes & Physics board.
Tue, Mar 2, 11:32 AM · Nodes & Physics, Physics, BF Blender
Dalai Felinto (dfelinto) moved T84287: [Mantaflow] Fluid volume loss with moving obstacle. from Backlog to Bugs on the Nodes & Physics board.
Tue, Mar 2, 11:31 AM · Physics, Nodes & Physics, BF Blender
Dalai Felinto (dfelinto) moved T51233: Deformation checkbox should be visible but isn't from Backlog to Known Issues on the Nodes & Physics board.
Tue, Mar 2, 11:31 AM · Nodes & Physics, User Interface, Physics, BF Blender
Dalai Felinto (dfelinto) moved T53083: Bake All Dynamics doesn't work when baking particle hair from Backlog to Known Issues on the Nodes & Physics board.
Tue, Mar 2, 11:30 AM · Nodes & Physics, Physics, BF Blender
Dalai Felinto (dfelinto) moved T53440: v2.79 - Particle System "Current Cache to Bake" Not Work from Backlog to Known Issues on the Nodes & Physics board.
Tue, Mar 2, 11:30 AM · Nodes & Physics, Physics, BF Blender
Dalai Felinto (dfelinto) moved T55405: Interpolated hair curves sharp turns from Backlog to Known Issues on the Nodes & Physics board.
Tue, Mar 2, 11:30 AM · Nodes & Physics, Physics, BF Blender
Dalai Felinto (dfelinto) moved T69238: Keyed particles work on viewport but not in render, also they are not affected by force fields from Backlog to Known Issues on the Nodes & Physics board.
Tue, Mar 2, 11:30 AM · Physics, Nodes & Physics, BF Blender
Dalai Felinto (dfelinto) moved T60945: Force field + hair dynamics not working in (linked) instanced collections from Backlog to Known Issues on the Nodes & Physics board.
Tue, Mar 2, 11:29 AM · Dependency Graph, Nodes & Physics, Physics, BF Blender

Fri, Feb 26

Kdaf (Kdaf) abandoned D10260: Collision: modifier/physic consistency.
Fri, Feb 26, 7:25 PM · User Interface, Modifiers, Physics

Wed, Feb 17

Kdaf (Kdaf) updated subscribers of D10266: Fix T84796: Particle tools properties displayed for select/cursor tool.

@Hans Goudey (HooglyBoogly) Can you take a look ?

Wed, Feb 17, 2:26 PM · User Interface

Tue, Feb 16

Aaron Carlisle (Blendify) removed a parent task for T55362: Blender development todo list -- Tools (migrated from wiki): T55361: Blender development todo list (Parent task).
Tue, Feb 16, 7:52 PM · Core, BF Blender, Images & Movies, Pipeline, Assets & I/O, Modeling, Compositing, Physics, Sculpt, Paint & Texture
Aaron Carlisle (Blendify) removed a project from T55362: Blender development todo list -- Tools (migrated from wiki): Documentation.

This task should be split up into smaller more specific tasks.

Tue, Feb 16, 7:29 PM · Core, BF Blender, Images & Movies, Pipeline, Assets & I/O, Modeling, Compositing, Physics, Sculpt, Paint & Texture
Bastien Montagne (mont29) moved T55362: Blender development todo list -- Tools (migrated from wiki) from Backlog to Long-term - Nice To Have on the Core board.
Tue, Feb 16, 6:13 PM · Core, BF Blender, Images & Movies, Pipeline, Assets & I/O, Modeling, Compositing, Physics, Sculpt, Paint & Texture
Bastien Montagne (mont29) triaged T55362: Blender development todo list -- Tools (migrated from wiki) as Low priority.
Tue, Feb 16, 6:13 PM · Core, BF Blender, Images & Movies, Pipeline, Assets & I/O, Modeling, Compositing, Physics, Sculpt, Paint & Texture
Bastien Montagne (mont29) added a project to T55362: Blender development todo list -- Tools (migrated from wiki): Core.
Tue, Feb 16, 6:07 PM · Core, BF Blender, Images & Movies, Pipeline, Assets & I/O, Modeling, Compositing, Physics, Sculpt, Paint & Texture

Tue, Feb 9

Sebastian Parborg (zeddb) added a comment to D10260: Collision: modifier/physic consistency.

After discussing this in the UI chat channel, I don't think this is a better solution than what we currently have.

Tue, Feb 9, 1:39 PM · User Interface, Modifiers, Physics

Mon, Feb 8

Julian Eisel (Severin) added a project to D10260: Collision: modifier/physic consistency: User Interface.
Mon, Feb 8, 10:50 AM · User Interface, Modifiers, Physics

Feb 6 2021

Kdaf (Kdaf) updated subscribers of D10260: Collision: modifier/physic consistency.
Feb 6 2021, 8:45 AM · User Interface, Modifiers, Physics

Feb 5 2021

Benjamin (Phonix_64) closed T85349: Turbulence field causing Blender to crash as Resolved.

Thanks for your Investigations. I found a method to avoid it by just baking the rgb sim to keyframes and then removing the rgb world.

Feb 5 2021, 11:29 PM · Physics, BF Blender
Germano Cavalcante (mano-wii) changed the status of T85349: Turbulence field causing Blender to crash from Needs Triage to Needs Information from User.

How to reproduce the problem from the attached file?
I opened it, and to bake the rigid body simulation I went to: Scene Properties -> Rigid Body World -> Cache -> Bake. But no crash.
Then I saw that I had to add a turbulence field.
So I opened the file again, added the turbulence field, went to Scene Properties -> Rigid Body World -> Cache -> Bake. But also no crash.
It is too time consuming to track down so I didn't open the other file to test.

Feb 5 2021, 10:28 PM · Physics, BF Blender

Feb 4 2021

Falk David (filedescriptor) added a comment to T85349: Turbulence field causing Blender to crash.

Still can't reproduce this. The file just simulates fine for me.

Feb 4 2021, 5:10 PM · Physics, BF Blender
Sebastián Barschkis (sebbas) closed T85311: Mantaflow Wavelet Noise Crash as Resolved.

Ok great, thanks for testing! Similar to T84649 the update then fixed this crash too. Cheers!

Feb 4 2021, 2:37 PM · Nodes & Physics, Physics, BF Blender
Michał Wieczorek (michal1000w) added a comment to T85311: Mantaflow Wavelet Noise Crash.

Yes, after some tests it seems to be fixed :D
Thank you for your work and have a nice day

Feb 4 2021, 2:34 PM · Nodes & Physics, Physics, BF Blender
Sebastián Barschkis (sebbas) changed the status of T85311: Mantaflow Wavelet Noise Crash from Needs Triage to Needs Information from User.

@Michał Wieczorek (michal1000w) Hi! Was just trying out the file but didn't get a crash so far.

Feb 4 2021, 1:38 PM · Nodes & Physics, Physics, BF Blender
Benjamin (Phonix_64) added a comment to T85349: Turbulence field causing Blender to crash.

Okay, I am lost. Here is my .blend file when I play it it just crashes... With the newest 2.93 build

Feb 4 2021, 12:44 PM · Physics, BF Blender
Benjamin (Phonix_64) changed the status of T85349: Turbulence field causing Blender to crash from Needs Information from User to Needs Triage.
Feb 4 2021, 11:58 AM · Physics, BF Blender
Benjamin (Phonix_64) added a comment to T85349: Turbulence field causing Blender to crash.

Oh, I am dum.... I Forgot to mention that bevor simulating you have to add a turbulence field.
But it still seems to work. Now I don£t understand anything anymore

Feb 4 2021, 11:34 AM · Physics, BF Blender
Falk David (filedescriptor) changed the status of T85349: Turbulence field causing Blender to crash from Needs Triage to Needs Information from User.

I cannot reproduce this on the latest alpha on Linux. Could you try the latest alpha or beta from https://builder.blender.org/download/ and see if the problem persists?

Feb 4 2021, 10:52 AM · Physics, BF Blender

Feb 3 2021

Benjamin (Phonix_64) added a project to T85349: Turbulence field causing Blender to crash: Physics.
Feb 3 2021, 11:23 PM · Physics, BF Blender
Michał Wieczorek (michal1000w) renamed T85311: Mantaflow Wavelet Noise Crash from Wavelet Noise Crash to Mantaflow Wavelet Noise Crash.
Feb 3 2021, 2:17 PM · Nodes & Physics, Physics, BF Blender

Jan 31 2021

Kdaf (Kdaf) retitled D10260: Collision: modifier/physic consistency from Collision modifier/physic consistency to Collision: modifier/physic consistency.
Jan 31 2021, 4:27 PM · User Interface, Modifiers, Physics
Kdaf (Kdaf) added a task to D10266: Fix T84796: Particle tools properties displayed for select/cursor tool: T84796: Particle Edit Comb Box Select tool wrongly show Comb tool settings.
Jan 31 2021, 11:47 AM · User Interface
Kdaf (Kdaf) requested review of D10266: Fix T84796: Particle tools properties displayed for select/cursor tool.
Jan 31 2021, 11:47 AM · User Interface

Jan 30 2021

Kdaf (Kdaf) added a comment to D10260: Collision: modifier/physic consistency.
Jan 30 2021, 5:18 PM · User Interface, Modifiers, Physics
Kdaf (Kdaf) updated the diff for D10260: Collision: modifier/physic consistency.
Jan 30 2021, 5:12 PM · User Interface, Modifiers, Physics
Kdaf (Kdaf) requested review of D10260: Collision: modifier/physic consistency.
Jan 30 2021, 4:53 PM · User Interface, Modifiers, Physics

Jan 29 2021

Philipp Oeser (lichtwerk) renamed T85184: Fluid modifier affects particle hair (even when set to None) from Hair Particle bug to Fluid modifier affects particle hair (even when set to None).
Jan 29 2021, 5:47 PM · BF Blender, Nodes & Physics, Modifiers, Physics
Philipp Oeser (lichtwerk) changed the status of T85184: Fluid modifier affects particle hair (even when set to None) from Needs Triage to Needs Developer to Reproduce.

Also a bit confused why the Fluid modifier (even when set to None) actually does something to the hair edit.
Will have another look with fresh eyes next week.

Jan 29 2021, 5:46 PM · BF Blender, Nodes & Physics, Modifiers, Physics
Samuel Walker (dorklord666) added a comment to T84287: [Mantaflow] Fluid volume loss with moving obstacle..

I may be close to a solution for mass conservation / volume loss issue. Please let me know if I'm on the right track and if this can be more clear in the tooltips

Jan 29 2021, 5:43 PM · Physics, Nodes & Physics, BF Blender
Silas Opel (Schamph) added a comment to T85184: Fluid modifier affects particle hair (even when set to None).

No the type is set to none so it wont do anything to the hair. You can just let it on but like i said its because the hair is the last modifier and dont has the option enabled use modifier stack..

Jan 29 2021, 5:26 PM · BF Blender, Nodes & Physics, Modifiers, Physics
Indisponible Anonyme (aplgn) added a comment to T85184: Fluid modifier affects particle hair (even when set to None).

The force field is affecting the groom when hair dynamics are not enabled and when they are they are affected when the timeline plays. Is that by design?

This is the same as T71192: Forcefield impact on hair without hair dynamics checked and T55172: Hair is dynamic even it is disabled.
That is not considered a bug.

Well and what about the fluid modifier that changes the hairstyle, only in edit mode while removed ?

Well thats also not a bug. The modifier is before the particle hair and changes the geometry of the mesh (checking modifier stack in the hair particle setting should prevent that). When you remove it the hair has a different mesh and will change the groom depending on it. Its not as intuitive as it should like the force field changing the hair for no reason..

When its not a bug than this can be closed because thats the reason in this file why its changing and the modifier stack order but thats also not a bug. @Philipp Oeser (lichtwerk)

Jan 29 2021, 5:20 PM · BF Blender, Nodes & Physics, Modifiers, Physics