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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

Today

Vyacheslav (hitrpr) updated subscribers of T51302: "Boid" Force field does nothing; should be removed.

@Sebastian Parborg (zeddb)
it seems this is still not solved. And not documented.
I tried to use attractor (goal) with force field and it changes nothing.

Sat, Jul 20, 12:33 AM · Physics, BF Blender

Thu, Jul 18

Sergey Sharybin (sergey) added a comment to T67139: Hair particle system altering display percentage crashes Blender..

Doesn't seem to be a regression to me: copying the content of the file to 2.79 makes it possible to reproduce the issue there as well.

Thu, Jul 18, 12:40 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) updated subscribers of T67139: Hair particle system altering display percentage crashes Blender..

all is good if there is no particle instance modifier on wheat_1

Thu, Jul 18, 11:51 AM · Physics, BF Blender
Philipp Oeser (lichtwerk) renamed T67148: Particle Instance from interpolated children works unexpected from Particle Instance from children works unexpected to Particle Instance from interpolated children works unexpected.
Thu, Jul 18, 11:33 AM · Physics, BF Blender
Philipp Oeser (lichtwerk) added a project to T67148: Particle Instance from interpolated children works unexpected: Physics.

Can confirm.

Thu, Jul 18, 11:33 AM · Physics, BF Blender
Philipp Oeser (lichtwerk) added a project to T67139: Hair particle system altering display percentage crashes Blender.: Physics.

Can confirm a crash here, checking...

Thu, Jul 18, 9:58 AM · Physics, BF Blender

Wed, Jul 17

Sergey Sharybin (sergey) closed T66919: Force field (wind noise) does not affect dinamically the hair particle effects as Resolved by committing rB4ddc7e8d1b2c: Fix T66919: Force field does not affect particles.
Wed, Jul 17, 4:53 PM · Physics, BF Blender
Sergey Sharybin (sergey) added a revision to T66919: Force field (wind noise) does not affect dinamically the hair particle effects: D5275: Fix T66919: Force field does not affect particles.
Wed, Jul 17, 11:40 AM · Physics, BF Blender

Tue, Jul 16

Sergey Sharybin (sergey) merged T66935: quick explode + rigid body into T58044: Issue with rigid body and modifiers dependent on transform.
Tue, Jul 16, 2:15 PM · BF Blender: 2.8, Physics

Mon, Jul 15

Sebastian Parborg (zeddb) merged T66828: particles keep emitting from first frame location of emitter and also the first few particles appear to freeze in mid air.blend into T58044: Issue with rigid body and modifiers dependent on transform.
Mon, Jul 15, 1:55 PM · BF Blender: 2.8, Physics
Sergey Sharybin (sergey) added a comment to T66743: Particle Systems keep reacting to a Force Field even though the Force Field's already been deleted.

Is not similar: dependency graph can not detect entities being added/removed and perform actions on this. Such issue is something what is easier and more localized to do as a part of force field removal.

Mon, Jul 15, 10:30 AM · Physics, BF Blender

Sun, Jul 14

Simone (Melkor98) added a comment to T66919: Force field (wind noise) does not affect dinamically the hair particle effects.

Thanks for replying, using a small ammount of noise in the force field WITHOUT hairy dinamycs enabled help to create a lite animation for a large ammount of hair particles without need for long bakes and physics configurazion for the hair particles effect, things that (for me at least) usually takes a lot less time without quality loss in much scenes, configuring physics and baking everything takes much more time for pretty much the same result on not important things, the force field noise animation without hair dynamics enabled is a feature that i personally use a lot, and i wouldd really like to use it in 2.8, so i created this post... (For the people that says it is just a glitch animation, it is not, in the example file in this post i just made a random situation to se the animation bug, with a bit of configuration the result is really enjoyable for a lot of situations)

Sun, Jul 14, 11:57 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) added a project to T66919: Force field (wind noise) does not affect dinamically the hair particle effects: Physics.

This seems to work with Hair Dynamics turned on (in 2.8) whereas it was "working" without that in 2.79 [but that is more or less pure jitter].

Sun, Jul 14, 11:44 PM · Physics, BF Blender
michael campbell (3di) added a comment to T45350: Cloth Simulator: "Free all bakes" doesn't clear bake, but "Free Bake" works.
Sun, Jul 14, 9:49 PM · Physics, BF Blender
Yasuhiro Fujii (y-fujii) added a comment to D3176: "Nearest only" option for the curve guide.

Update for the latest master with additional comments and improvements about random number generator states.

Sun, Jul 14, 10:16 AM · BF Blender, Physics

Fri, Jul 12

michael campbell (3di) added a comment to T58044: Issue with rigid body and modifiers dependent on transform.

Just tested the release candidate and the bug is still here. Strangely it did appear to work once, with strange results, but after that it went back to only taking into account frame one of the rigid body simulation.

Fri, Jul 12, 8:46 PM · BF Blender: 2.8, Physics
Philipp Oeser (lichtwerk) updated subscribers of T66743: Particle Systems keep reacting to a Force Field even though the Force Field's already been deleted.

@Sergey Sharybin (sergey): mind checking? (this might be similar to rB2110f4a76c0c)

Fri, Jul 12, 1:41 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) added a comment to T66752: Show emitter particles doesn't dissapear when uncheck.

actually, what @YAFU (YAFU) said says it all... [that was rather stupid by me, excuses...]

Fri, Jul 12, 1:19 PM · Physics, Rendering, BF Blender
dono dono (dono) added a comment to T66752: Show emitter particles doesn't dissapear when uncheck.

Hello! Thank you for answer and sorry for the inconvenience. All the best!

Fri, Jul 12, 1:18 PM · Physics, Rendering, BF Blender
Philipp Oeser (lichtwerk) added projects to T66752: Show emitter particles doesn't dissapear when uncheck: Rendering, Physics.

Working for me in F12 render (cycles, not eevee), but not rendered viewport (neither cycles, nor eevee)....
Thought this has been reported before, but cannot find it...

Fri, Jul 12, 1:16 PM · Physics, Rendering, BF Blender
vunhughvaw updated the task description for T66743: Particle Systems keep reacting to a Force Field even though the Force Field's already been deleted.
Fri, Jul 12, 11:07 AM · Physics, BF Blender
Philipp Oeser (lichtwerk) added a comment to T66743: Particle Systems keep reacting to a Force Field even though the Force Field's already been deleted.

Confirmed, checking...

Fri, Jul 12, 10:46 AM · Physics, BF Blender
vunhughvaw updated the task description for T66743: Particle Systems keep reacting to a Force Field even though the Force Field's already been deleted.
Fri, Jul 12, 10:33 AM · Physics, BF Blender
vunhughvaw updated the task description for T66743: Particle Systems keep reacting to a Force Field even though the Force Field's already been deleted.
Fri, Jul 12, 10:32 AM · Physics, BF Blender
vunhughvaw updated the task description for T66743: Particle Systems keep reacting to a Force Field even though the Force Field's already been deleted.
Fri, Jul 12, 10:31 AM · Physics, BF Blender
vunhughvaw updated the task description for T66743: Particle Systems keep reacting to a Force Field even though the Force Field's already been deleted.
Fri, Jul 12, 10:28 AM · Physics, BF Blender
vunhughvaw updated the task description for T66743: Particle Systems keep reacting to a Force Field even though the Force Field's already been deleted.
Fri, Jul 12, 10:25 AM · Physics, BF Blender
vunhughvaw updated the task description for T66743: Particle Systems keep reacting to a Force Field even though the Force Field's already been deleted.
Fri, Jul 12, 10:18 AM · Physics, BF Blender

Wed, Jul 10

Clément Foucault (fclem) added a comment to T51214: Dynamic Paint Works Only in Viewport Render.

The issue here is that dynamic paint does not work if after an enabled subsurf modifier. Putting it before and everything is working.

Wed, Jul 10, 3:20 PM · Physics, BF Blender

Tue, Jul 9

Sergey Sharybin (sergey) closed D5120: Raise particle count limit for 2.8 release.
Tue, Jul 9, 5:45 PM · Physics
Gottfried Hofmann (gottfried) added a comment to D5120: Raise particle count limit for 2.8 release.

Remove hard limit and comments on that, increase soft limit.

Tue, Jul 9, 4:00 PM · Physics
Gottfried Hofmann (gottfried) added a comment to D5120: Raise particle count limit for 2.8 release.

Remove both the hard limit and the comments on said limit.

Tue, Jul 9, 3:57 PM · Physics
Gottfried Hofmann (gottfried) added a comment to D5120: Raise particle count limit for 2.8 release.

But i am not sure what is this exactly about:

/* Hard limit is 16M to avoid reaching the object limit in Blender. */

@Brecht Van Lommel (brecht), unless i'm missing something, we can totally remove hard limit here.

Tue, Jul 9, 3:37 PM · Physics
D5120: Raise particle count limit for 2.8 release is now accepted and ready to land.

Agreed.

Tue, Jul 9, 3:24 PM · Physics
Sergey Sharybin (sergey) updated subscribers of D5120: Raise particle count limit for 2.8 release.

I'm fine increasing limits.

Tue, Jul 9, 2:41 PM · Physics
Eitan (EitanSomething) added a reviewer for D5120: Raise particle count limit for 2.8 release: Sergey Sharybin (sergey).
Tue, Jul 9, 2:28 PM · Physics
Sergey Sharybin (sergey) renamed T58044: Issue with rigid body and modifiers dependent on transform from Issue with adding hair to rigid body to Issue with rigid body and modifiers dependent on transform.
Tue, Jul 9, 11:06 AM · BF Blender: 2.8, Physics
Sergey Sharybin (sergey) merged T60079: BLender 2.8 cloth and rigid body into T58044: Issue with rigid body and modifiers dependent on transform.
Tue, Jul 9, 11:06 AM · BF Blender: 2.8, Physics

Sun, Jul 7

Eitan (EitanSomething) added a reviewer for D5120: Raise particle count limit for 2.8 release: Jacques Lucke (JacquesLucke).
Sun, Jul 7, 10:43 PM · Physics

Wed, Jul 3

Brecht Van Lommel (brecht) added a comment to T66358: Adding texture to particle emission density breaks particle simulation.

Possible related to T59272: Dead particles not included in render (F12), but visible in viewport?

Wed, Jul 3, 7:46 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) added a project to T66358: Adding texture to particle emission density breaks particle simulation: Physics.

Looks particles are displayed (and are participating in the sim) that should have been 'killed' by the density setting... confirming for now and checking...

Wed, Jul 3, 10:33 AM · Physics, BF Blender

Mon, Jul 1

Brecht Van Lommel (brecht) updated the task description for T66307: Nodes & Physics Module.
Mon, Jul 1, 6:52 PM · Physics, Nodes, BF Blender
Brecht Van Lommel (brecht) updated the task description for T66307: Nodes & Physics Module.
Mon, Jul 1, 6:19 PM · Physics, Nodes, BF Blender
Brecht Van Lommel (brecht) renamed T66307: Nodes & Physics Module from Nodes & Physics to Nodes & Physics Module.
Mon, Jul 1, 5:56 PM · Physics, Nodes, BF Blender
Brecht Van Lommel (brecht) added a parent task for T66307: Nodes & Physics Module: T63725: Module Owners Todo's (parent task).
Mon, Jul 1, 5:55 PM · Physics, Nodes, BF Blender
Brecht Van Lommel (brecht) created T66307: Nodes & Physics Module.
Mon, Jul 1, 5:55 PM · Physics, Nodes, BF Blender

Sat, Jun 22

Gottfried Hofmann (gottfried) created D5120: Raise particle count limit for 2.8 release.
Sat, Jun 22, 9:42 AM · Physics

Jun 6 2019

Brecht Van Lommel (brecht) merged T65541: Hair particles don't follow rigid body in animation into T58044: Issue with rigid body and modifiers dependent on transform.
Jun 6 2019, 2:19 PM · BF Blender: 2.8, Physics

Jun 1 2019

Rombout Versluijs (rombout) added a comment to T53083: Bake All Dynamics doesn't work when baking particle hair.

I also run into this issue today. Tried everything within my knowledge but it wont work. SIngle bake does work , but thats not useful with multiple items. How did they do the open movie projects without this?!?!?

Jun 1 2019, 6:37 AM · Physics, BF Blender

May 29 2019

Brecht Van Lommel (brecht) closed T56145: Blender is not renderng mesh with cloth phisics as Archived.

This is indeed a known limitation, we should improve the UI here once but for now it is require to have the same level for both.

May 29 2019, 4:32 AM · Physics, Rendering, BF Blender