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Nodes & PhysicsProject
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Description

This projects includes function nodes, dependency graph, rigid body, particles & hair, cloth, fluid & smoke (mantaflow), softbody, node editor and more.

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Recent Activity

Today

Dimitri Bastos (DimitriBastos) added a comment to T77170: Mantaflow smoke preview will not update till domain settings are changed.

Any news on solving this issue?

Tue, Sep 21, 4:52 PM · BF Blender (2.93), Nodes & Physics
Hans Goudey (HooglyBoogly) changed the subtype of T91565: Geometry nodes: Material selection passed through Switch do not work anymore from "Report" to "Known Issue".
Tue, Sep 21, 4:48 PM · BF Blender (3.0), Geometry Nodes, Nodes & Physics
Philipp Oeser (lichtwerk) changed the status of T83205: Quick Smoke does not assign color attribute to Principled Volume from Needs Triage to Needs Information from Developers.

From the rendering modules point of view I'd close this as a not a bug.

Tue, Sep 21, 4:15 PM · Nodes & Physics, BF Blender
Hans Goudey (HooglyBoogly) moved T89612: Sample Curve Node from Community Tasks to Done (waiting for product demo) on the Geometry Nodes board.
Tue, Sep 21, 6:21 AM · Nodes & Physics, Geometry Nodes

Yesterday

michael campbell (3di) added a comment to T91183: RBD sim ignores mesh (cloth) deformation.

For anyone arriving here with one of the other issues caused by this bug; for non-deforming rbd driven geometry which should act as a mesh shaped cloth collision . Duplicate object being driven by rbd, remove rbd from duplicate, parent to original, and then give duplicate a collision modifier (remove collisions modifier from parent/original):

Mon, Sep 20, 5:06 PM · Core, Dependency Graph, Nodes & Physics, BF Blender
Bastien Montagne (mont29) moved T91183: RBD sim ignores mesh (cloth) deformation from Backlog to Known Issues on the Core board.
Mon, Sep 20, 4:55 PM · Core, Dependency Graph, Nodes & Physics, BF Blender
Bastien Montagne (mont29) lowered the priority of T91183: RBD sim ignores mesh (cloth) deformation from High to Normal.

This is certainly not high priority, as already said by others RB needs serious re-design... This is not even a bug actually, but rather a known issue.

Mon, Sep 20, 4:54 PM · Core, Dependency Graph, Nodes & Physics, BF Blender
michael campbell (3di) added a comment to T91183: RBD sim ignores mesh (cloth) deformation.

yep, super messy workaround. It seems the bug isn't the physics system though, more to do with the depsgraph?

Mon, Sep 20, 4:16 PM · Core, Dependency Graph, Nodes & Physics, BF Blender
michael campbell (3di) added a comment to T91500: cloth sim pin stiffness ignored.

thanks, vertex modifiers will do the trick.

Mon, Sep 20, 4:03 PM · Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) changed the status of T91500: cloth sim pin stiffness ignored from Needs Triage to Confirmed.
Mon, Sep 20, 3:52 PM · Nodes & Physics, BF Blender
michael campbell (3di) added a comment to T91183: RBD sim ignores mesh (cloth) deformation.

I did notice that everything works as expected if the collision mesh is set to anything other than mesh or convex hull. It does start having a schizoid embolism though, which can only be cleared by checking and unchecking the animated checkbox of the rigid body settings:

Mon, Sep 20, 3:31 PM · Core, Dependency Graph, Nodes & Physics, BF Blender
Sebastian Parborg (zeddb) added a comment to T91183: RBD sim ignores mesh (cloth) deformation.

We need to do a deep clean/refactor of our rigidbody code to properly fix some other crashing issues that are there because of some very bad design choices in the current code that can't be fixed.
So as Sergey pointed out, I don't either think this will be a high priority issue because of the amount of planning and time this need to be fixed properly.

Mon, Sep 20, 10:28 AM · Core, Dependency Graph, Nodes & Physics, BF Blender
david law (Ponlets) updated the task description for T91496: blender fluids crahses while baking mantaflo apic.
Mon, Sep 20, 10:06 AM · Nodes & Physics, BF Blender
david law (Ponlets) updated the task description for T91496: blender fluids crahses while baking mantaflo apic.
Mon, Sep 20, 10:06 AM · Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) updated subscribers of T91183: RBD sim ignores mesh (cloth) deformation.

@Sergey Sharybin (sergey): feel free to change priority back (or maybe @Dalai Felinto (dfelinto) might also have an opinion?)

Mon, Sep 20, 9:52 AM · Core, Dependency Graph, Nodes & Physics, BF Blender
Sergey Sharybin (sergey) added a comment to T91183: RBD sim ignores mesh (cloth) deformation.

To my knowledge nobody is working on this issue due to being busy in other projects.

Mon, Sep 20, 9:24 AM · Core, Dependency Graph, Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) changed the status of T83730: why some hairs are not moving with dynamic hair? in blender 2.90/2.91 from Needs Triage to Confirmed.

Sorry this has ben lying around for so long, but can confirm.

Mon, Sep 20, 8:19 AM · Nodes & Physics, BF Blender
Stephen Hamacek (hammers) added a comment to T82503: Add Support of PointCaches to Library Overrides.

I'm trying to bake cloth/disk cache on an overridden character, but sadly just get a hard crash when I hit bake. Shouldn't be a computer performance issue as I can still bake using the old 'pin the object panel' method that I've been using for years with proxy characters.

Mon, Sep 20, 8:02 AM · Core, Nodes & Physics, BF Blender
Hans Goudey (HooglyBoogly) moved T89220: Curve Primitive Nodes from Waiting for Feedback/Review to Product Backlog on the Geometry Nodes board.
Mon, Sep 20, 5:02 AM · Nodes & Physics, Geometry Nodes

Sat, Sep 18

Aaron Carlisle (Blendify) edited projects for T91496: blender fluids crahses while baking mantaflo apic, added: BF Blender, Nodes & Physics; removed VFX & Video.
Sat, Sep 18, 7:06 PM · Nodes & Physics, BF Blender
Dixon osecha (Dxn) added a comment to T79711: Mantaflow: OpenVDB glitches due to Adaptive Domain.

In the vdb file, the center of the object is in the corner and not in the center, so when resizing the domain moves that way outside of that, we can notice that the way of scaling does not work well.

Sat, Sep 18, 6:34 PM · Nodes & Physics, BF Blender
michael campbell (3di) added a comment to T91183: RBD sim ignores mesh (cloth) deformation.

Is anyone looking at this?

Sat, Sep 18, 5:40 PM · Core, Dependency Graph, Nodes & Physics, BF Blender

Fri, Sep 17

Alexander Gavrilov (angavrilov) updated the summary of D8075: Force Fields: implement new true power and custom falloff options..
Fri, Sep 17, 3:53 PM · Nodes & Physics
Jacques Lucke (JacquesLucke) closed T87423: Trim Curve Node as Resolved.
Fri, Sep 17, 3:52 PM · Nodes & Physics, Geometry Nodes
Jacques Lucke (JacquesLucke) closed T88561: Change Spline Type Node for curve nodes as Resolved.
Fri, Sep 17, 3:52 PM · Nodes & Physics, Geometry Nodes

Thu, Sep 16

Damian (damian) added a comment to T87009: Compact Nodes.

This proposal looks neat but reduces readability.
Mini-map of a nodegraph would solve part of a problem.

Thu, Sep 16, 1:33 PM · Nodes & Physics
Piotr Adamowicz (madminstrel) added a comment to T88702: Curve Deform Node.

"Only the first spline of the curve is used for deformation."

Thu, Sep 16, 11:27 AM · Nodes & Physics, Geometry Nodes

Wed, Sep 15

Philipp Oeser (lichtwerk) renamed T89860: Mantaflow crashes if the scene has auto running script which disables an addon. from Blender crashes if the scene has auto running script which disables an addon. to Mantaflow crashes if the scene has auto running script which disables an addon..
Wed, Sep 15, 4:30 PM · Nodes & Physics, Python API, BF Blender
Philipp Oeser (lichtwerk) changed the status of T89860: Mantaflow crashes if the scene has auto running script which disables an addon. from Needs Triage to Confirmed.

Can confirm in this particular file.

Wed, Sep 15, 4:30 PM · Nodes & Physics, Python API, BF Blender
Philipp Oeser (lichtwerk) added a comment to T75681: Mantaflow crash when trying to bake a cupcake: The CG solver diverged, residual norm > 1e30.

This is not fixed, has been reported again and again, see T87975: Mantaflow simulation stops and crashes at the end of the bake (or when closing blender): The CG solver diverged, residual norm > 1e30, stopping.

Wed, Sep 15, 10:32 AM · BF Blender (2.83), Nodes & Physics
Philipp Oeser (lichtwerk) triaged T87975: Mantaflow simulation stops and crashes at the end of the bake (or when closing blender): The CG solver diverged, residual norm > 1e30, stopping. as High priority.

Since this has been reported often, will set to High prio.

Wed, Sep 15, 10:32 AM · Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) merged T89723: the source value on the initial velocity liquid simulation crashes blender into T87975: Mantaflow simulation stops and crashes at the end of the bake (or when closing blender): The CG solver diverged, residual norm > 1e30, stopping..
Wed, Sep 15, 10:30 AM · Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) renamed T87975: Mantaflow simulation stops and crashes at the end of the bake (or when closing blender): The CG solver diverged, residual norm > 1e30, stopping. from Mantaflow crash at the end of the bake: The CG solver diverged, residual norm > 1e30, stopping. to Mantaflow simulation stops and crashes at the end of the bake (or when closing blender): The CG solver diverged, residual norm > 1e30, stopping..
Wed, Sep 15, 10:30 AM · Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) updated the task description for T87975: Mantaflow simulation stops and crashes at the end of the bake (or when closing blender): The CG solver diverged, residual norm > 1e30, stopping..
Wed, Sep 15, 10:28 AM · Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) merged T91359: placing a modifier after a cloth sim modifier, deletes cloth sims playback cache unnecessarily. into T89767: Modifiers after physics ones shouldn't invalidate cache.
Wed, Sep 15, 8:56 AM · Dependency Graph, Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) merged task T91359: placing a modifier after a cloth sim modifier, deletes cloth sims playback cache unnecessarily. into T89767: Modifiers after physics ones shouldn't invalidate cache.
Wed, Sep 15, 8:56 AM · Dependency Graph, Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) changed the status of T89767: Modifiers after physics ones shouldn't invalidate cache from Needs Triage to Needs Information from Developers.

Adding a modifier will tag with ID_RECALC_GEOMETRY which in turn will recalc the whole modifier stack.

Now re-evaluation of the modifer stack does not necessarily mean clearing the cache, right @Sergey Sharybin (sergey)?
(will simply confirm and leave clarification up to Nodes & Physics or Dependency Graph devs).

Wed, Sep 15, 8:56 AM · Dependency Graph, Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) added a comment to T91359: placing a modifier after a cloth sim modifier, deletes cloth sims playback cache unnecessarily..

Actually, we have a duplicate already that slipped through, see T89767: Modifiers after physics ones shouldn't invalidate cache.
Since that report also mentions not only placing a modifier after, but also changing any value in a modifier after, will merge into that report, lets continue discussion there.

Wed, Sep 15, 8:55 AM · Dependency Graph, Nodes & Physics, BF Blender

Tue, Sep 14

Charlie Jolly (charlie) updated the task description for T86749: Geometry Node Community Additions.
Tue, Sep 14, 11:56 AM · Nodes & Physics, Nodes, Geometry Nodes
Charlie Jolly (charlie) updated the task description for T86749: Geometry Node Community Additions.
Tue, Sep 14, 11:46 AM · Nodes & Physics, Nodes, Geometry Nodes
Alexander Gavrilov (angavrilov) updated the summary of D8075: Force Fields: implement new true power and custom falloff options..
Tue, Sep 14, 10:56 AM · Nodes & Physics
Philipp Oeser (lichtwerk) changed the status of T91258: hair dynamics beaks for some unevenly keyed hair strands from Needs Triage to Confirmed.

This is probably the same as T56818: Hair Dynamics does not work for all strands when hair has been cut

Tue, Sep 14, 10:27 AM · Nodes & Physics, BF Blender
Philipp Oeser (lichtwerk) planned changes to D12442: Fix T91271: issues with some RNA fluid defaults.

quoting @Julian Eisel (Severin) from chat:

Tue, Sep 14, 9:01 AM · User Interface, Nodes & Physics

Mon, Sep 13

Hans Goudey (HooglyBoogly) closed T90654: Instanced geometry nodes curve data crashes rendering as Resolved.

Testing this, pretty sure it's resolved now. Which would make sense based on the info above.

Mon, Sep 13, 9:42 PM · Nodes & Physics, Geometry Nodes, BF Blender
Alexander Gavrilov (angavrilov) added a project to D8075: Force Fields: implement new true power and custom falloff options.: Nodes & Physics.
Mon, Sep 13, 6:02 PM · Nodes & Physics
Philipp Oeser (lichtwerk) changed the status of T91359: placing a modifier after a cloth sim modifier, deletes cloth sims playback cache unnecessarily. from Needs Triage to Needs Information from Developers.

Adding a modifier will tag with ID_RECALC_GEOMETRY which in turn will recalc the whole modifier stack.

Mon, Sep 13, 5:56 PM · Dependency Graph, Nodes & Physics, BF Blender
Jacques Lucke (JacquesLucke) closed T91303: Geometry Nodes Fields Use Two "Position" Nodes Connected to the Same "Vector Math" Node Crashes Blender as Resolved.

Fixed by rBb777df8080f221a99a6a87c0937868cd21bf5a2b.

Mon, Sep 13, 4:29 PM · Nodes & Physics, Geometry Nodes, BF Blender
michael campbell (3di) added a comment to T91183: RBD sim ignores mesh (cloth) deformation.

👍

Mon, Sep 13, 2:58 PM · Core, Dependency Graph, Nodes & Physics, BF Blender
Jacques Lucke (JacquesLucke) moved T89273: "Range" filter option for spreadsheet row filters from Waiting for Feedback/Review to Community Tasks on the Geometry Nodes board.
Mon, Sep 13, 1:50 PM · Nodes & Physics, Geometry Nodes
Philipp Oeser (lichtwerk) placed T91183: RBD sim ignores mesh (cloth) deformation up for grabs.

As a triager, I am afraid I will have to step down and let the Nodes & Physics module take over (as much as I'd like to get down to it it just eats too much time that is needed to fight other reports :/)

Mon, Sep 13, 12:46 PM · Core, Dependency Graph, Nodes & Physics, BF Blender