PhysicsProject
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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

Fri, May 18

Philipp Oeser (lichtwerk) added a comment to T55105: Smoke Emission from particles is ignoring lattice deformer on the particles.

I'll look into Alembic separately

Fri, May 18, 4:25 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) added a project to T55105: Smoke Emission from particles is ignoring lattice deformer on the particles: Physics.
Fri, May 18, 4:23 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) closed D3396: Fix T55115: crash when iterating SmokeDomainSettings color_grid property through python.

commited rB5e7a21a5f549

Fri, May 18, 3:11 PM · Physics, BF Blender
shaun (toxsickcity) added a comment to T54916: Fluid Simulator, **spilling Massive amounts of fluid from objects which move**.

I did solve this with majoy difficulty.

Fri, May 18, 2:05 PM · Physics, BF Blender
Brecht Van Lommel (brecht) accepted D3396: Fix T55115: crash when iterating SmokeDomainSettings color_grid property through python.
Fri, May 18, 1:54 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) created D3396: Fix T55115: crash when iterating SmokeDomainSettings color_grid property through python.
Fri, May 18, 1:02 PM · Physics, BF Blender

Thu, May 10

shaun (toxsickcity) added a comment to T54916: Fluid Simulator, **spilling Massive amounts of fluid from objects which move**.

is this bug found? will it have a solution?

Thu, May 10, 10:04 AM · Physics, BF Blender

Wed, May 2

Philipp Oeser (lichtwerk) added a project to T54916: Fluid Simulator, **spilling Massive amounts of fluid from objects which move**: Physics.
Wed, May 2, 12:00 PM · Physics, BF Blender

Fri, Apr 27

Philipp Oeser (lichtwerk) claimed T54108: Child Of vertex group fails when controled by Particle System.

This doesnt seem to be related to a ParticleSystem in particular.
It just works well with object transformations on the target (same as your First Layer example), but not so well with object data transformations...

Fri, Apr 27, 4:11 PM · Physics, Animation, BF Blender
Philipp Oeser (lichtwerk) changed Type from Bug to To Do on T53872: Hair, Particle Edit automatically mirrors guide strands.
Fri, Apr 27, 2:35 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) closed T53872: Hair, Particle Edit automatically mirrors guide strands as Archived.

Though this might be inconvenient, this seems to be by design (and not a bug) then.

Fri, Apr 27, 2:35 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) added a comment to T54108: Child Of vertex group fails when controled by Particle System.

OK, will have a look

Fri, Apr 27, 10:32 AM · Physics, Animation, BF Blender
Serge Lyatin (SergeL) added a comment to T54108: Child Of vertex group fails when controled by Particle System.

Yeah, rotation sliding on Z is bothering me

Fri, Apr 27, 10:00 AM · Physics, Animation, BF Blender
Philipp Oeser (lichtwerk) added a comment to T54108: Child Of vertex group fails when controled by Particle System.

Sorry this report hasnt been answered in quite a while.

Fri, Apr 27, 9:50 AM · Physics, Animation, BF Blender

Tue, Apr 24

Konstantin (Ko) added a reviewer for D3176: "Nearest only" option for the curve guide: Lukas Toenne (lukastoenne).

Lukas T. I just hope what this doesnt go in perpendicular with your work in hair_guides branch.

Tue, Apr 24, 6:06 AM · BF Blender, Physics

Apr 23 2018

Yasuhiro Fujii (y-fujii) added a project to D3176: "Nearest only" option for the curve guide: BF Blender.
Apr 23 2018, 6:46 PM · BF Blender, Physics
Yasuhiro Fujii (y-fujii) created D3176: "Nearest only" option for the curve guide.
Apr 23 2018, 3:33 PM · BF Blender, Physics

Apr 4 2018

Philipp Oeser (lichtwerk) closed T54521: Self-collision cloth causing unrealistic physics as Invalid.

Your objects geometries have very long/thin faces which makes it harder/impossible for the simulation to end up being somewhat realistic (lack of edges to bend at).
So without going into details (you should be able to find plenty of tutorials online), you should already end up with something more pleasing by just adding a couple of edgeloops in your file like here:

Apr 4 2018, 2:30 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) raised the priority of T54521: Self-collision cloth causing unrealistic physics from Incomplete to Needs Triage.

Ah, sorry, having a look now...

Apr 4 2018, 2:07 PM · Physics, BF Blender
Vinicius Fagundes (vinf100) added a comment to T54521: Self-collision cloth causing unrealistic physics.

I did, it is beside my graphics card version on the link "F2596406". I know, that's a weird place, I don't know why it's there. I just drag and dropped it.

Apr 4 2018, 2:04 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) triaged T54521: Self-collision cloth causing unrealistic physics as Incomplete priority.

could you please upload your example file, so we can have a look?

Apr 4 2018, 1:57 PM · Physics, BF Blender
Vinicius Fagundes (vinf100) created T54521: Self-collision cloth causing unrealistic physics.
Apr 4 2018, 1:05 PM · Physics, BF Blender

Mar 1 2018

Sergey Sharybin (sergey) added a comment to T54175: First and second particle overlap when they shouldn't.

Is it possible to work around it using Python?

Mar 1 2018, 12:16 PM · Physics, BF Blender
Rumen Belev (syziph) added a comment to T54175: First and second particle overlap when they shouldn't.

Thanks Sergey!
You are right about new particles messing up old projects.
Is it possible to work around it using Python?

Mar 1 2018, 11:56 AM · Physics, BF Blender
Sergey Sharybin (sergey) closed T54175: First and second particle overlap when they shouldn't as Resolved.

Thanks for the report, but it was already fixed in rB35ee9ff.

Mar 1 2018, 11:44 AM · Physics, BF Blender

Feb 26 2018

Rumen Belev (syziph) created T54175: First and second particle overlap when they shouldn't.
Feb 26 2018, 2:31 PM · Physics, BF Blender

Feb 20 2018

Serge Lyatin (SergeL) created T54108: Child Of vertex group fails when controled by Particle System.
Feb 20 2018, 5:29 PM · Physics, Animation, BF Blender

Feb 8 2018

Belén Palacios (Nete123123) added a watcher for Physics: Belén Palacios (Nete123123).
Feb 8 2018, 2:24 PM

Jan 30 2018

Bastien Montagne (mont29) added a comment to T51214: Dynamic Paint Works Only in Viewport Render.

Ok, so now crash seems to have disappeared again. Issue with rendering remains though. :)

Jan 30 2018, 1:05 PM · Physics, BF Blender
Campbell Barton (campbellbarton) abandoned D2948: T50630: Fixed Windows fluid simulation with Unicode characters in path.

Committed modified patch rBb0af44fa4d7a2e134b315c49a4fbdf573f781004

Jan 30 2018, 6:38 AM · Physics, BF Blender
Campbell Barton (campbellbarton) closed T50630: fluid cache folder bug (cyrillic in path) as Resolved by committing rBb0af44fa4d7a: Fix T50630: Fluid fails on win32 w/ unicode paths.
Jan 30 2018, 4:30 AM · Platform: Windows, Physics, BF Blender

Jan 29 2018

João Esteves (Joao611) added a comment to D2948: T50630: Fixed Windows fluid simulation with Unicode characters in path.

I apologize for only getting back to you now. Your CMake definition of "LBM_GZIP_OPEN_FN" is not working and I'm not experienced enough with CMake to figure out a solution.

Jan 29 2018, 11:13 PM · Physics, BF Blender

Jan 23 2018

ronan ducluzeau (zeauro) added a comment to T53872: Hair, Particle Edit automatically mirrors guide strands.

I can confirm that enabling/disabling X-mirror in Edit mode enables/disables it for Particle Edit mode, too.
Particle Edit mode re-uses Edit mode tools to manipulate particles.

Jan 23 2018, 6:55 PM · Physics, BF Blender
Philipp Oeser (lichtwerk) added a comment to T53872: Hair, Particle Edit automatically mirrors guide strands.

Seems like the .blend is missing?

Jan 23 2018, 6:31 PM · Physics, BF Blender
adam inskip (adaminskip) created T53872: Hair, Particle Edit automatically mirrors guide strands.
Jan 23 2018, 6:24 PM · Physics, BF Blender

Jan 19 2018

Campbell Barton (campbellbarton) closed T53823: Enabling weight brush in particle edit mode of a hair particle system will cause a crash when entering an emitter system edit mode. as Resolved by committing rB368414efacc2: Fix T53823: Particle weight brush crash.
Jan 19 2018, 2:17 AM · Physics, BF Blender

Jan 18 2018

Philipp Oeser (lichtwerk) assigned T53823: Enabling weight brush in particle edit mode of a hair particle system will cause a crash when entering an emitter system edit mode. to Campbell Barton (campbellbarton).

Can confirm this, D3008: T53823: prevent crash prevents the crash, but maybe we should spend time making sure we only have the weight brush available for hair? (@Campbell Barton (campbellbarton) : I could have a look if this is worth the time...)

Jan 18 2018, 5:19 PM · Physics, BF Blender
ronan ducluzeau (zeauro) created T53823: Enabling weight brush in particle edit mode of a hair particle system will cause a crash when entering an emitter system edit mode..
Jan 18 2018, 12:13 PM · Physics, BF Blender

Jan 11 2018

Bastien Montagne (mont29) closed T53561: Rigid Body phycics is not made local when making the linked object local as Invalid.

The localized object is not part of rigidbody sim because it’s not part of the relevant Group. This has nothing to do with linking or localization.

Jan 11 2018, 2:15 PM · Physics, BF Blender

Dec 28 2017

Francesco Yoshi Gobbo (FraYoshi) updated the task description for T53561: Rigid Body phycics is not made local when making the linked object local .
Dec 28 2017, 12:57 PM · Physics, BF Blender

Dec 26 2017

Phillip Thomas (philliptee) added a watcher for Physics: Phillip Thomas (philliptee).
Dec 26 2017, 3:33 PM

Dec 18 2017

Sergey Sharybin (sergey) assigned T53561: Rigid Body phycics is not made local when making the linked object local to Bastien Montagne (mont29).

Is that something missing in library management, or is it something what is tricky to get localized?

Dec 18 2017, 11:45 AM · Physics, BF Blender

Dec 15 2017

Francesco Yoshi Gobbo (FraYoshi) added a project to T53561: Rigid Body phycics is not made local when making the linked object local : Physics.
Dec 15 2017, 7:20 PM · Physics, BF Blender

Dec 14 2017

Campbell Barton (campbellbarton) requested changes to D2948: T50630: Fixed Windows fluid simulation with Unicode characters in path.

I don't have access to Win32 at the moment, P576 @João Esteves (Joao611), could you check if this works?

Dec 14 2017, 1:50 AM · Physics, BF Blender

Dec 13 2017

Campbell Barton (campbellbarton) accepted D2948: T50630: Fixed Windows fluid simulation with Unicode characters in path.

Nice fix but uses bad level calls, think we can use defines in CMake to pass in gzopen overrides.

Dec 13 2017, 12:42 PM · Physics, BF Blender

Dec 8 2017

João Esteves (Joao611) added a reviewer for D2948: T50630: Fixed Windows fluid simulation with Unicode characters in path: BF Blender.
Dec 8 2017, 10:06 PM · Physics, BF Blender

Dec 7 2017

ronan ducluzeau (zeauro) added a comment to T53472: Cycles doesn't render smoke properly with adjusted clipping distances.

There is no plan that goes into details for refactoring of smokes or a developer currently working on it for first 2.8. A refactoring of modifiers is expected for the end of 2.8 series but to convert modifiers's stack into modifiers nodes. Addition of an OpenVDB primitive can be done next year or more years later.

Dec 7 2017, 12:34 PM · Cycles
Felix (BlenderSpot) added a comment to T53472: Cycles doesn't render smoke properly with adjusted clipping distances.

@ronan ducluzeau (zeauro)
Thanks for the workaround but the thing is that I need to render like 20 slices along Z and 10 on X and Y each, so 40 slices in total. And then I need to do the same thing with another smoke sim, maybe bigger, so even more slices.

Dec 7 2017, 10:31 AM · Cycles

Dec 6 2017

ronan ducluzeau (zeauro) added a comment to T53472: Cycles doesn't render smoke properly with adjusted clipping distances.

I think it is a known limitation that Camera Clipping is not working with smokes at rendering.

Dec 6 2017, 4:19 PM · Cycles
Felix (BlenderSpot) added a project to T53472: Cycles doesn't render smoke properly with adjusted clipping distances: Rendering.
Dec 6 2017, 9:14 AM · Cycles