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+--- Thread: Inconsistent smoke animation (/showthread.php?tid=2115)
Inconsistent smoke animation - Fabrice - 11-19-2022
Hi again,
I have this animated character and I use tyFlow to "mesh" it and then emit some smoke from this TyMesher.
But the smoke sometimes seems to have little "explosions" in it (frames 357 and 393) :
https://vimeo.com/773051972/726ba05e86
It should be linear as there's no animated keys neither on the FumeFx object nor on the FFX Geom Src.
Do you have any idea what can happen please?
RE: Inconsistent smoke animation - Kresimir Tkalcec - 11-21-2022
Hello Fabrice,
There is is one solid mesh that is used to emit smoke ?
For a test, could you set Object Velocity to 0.0 in Geom Source - not sure how tymesher sets its transformation matrix for the object it meshes and FumeFX uses it to determine Object Velocity.
I suppose that you use normal velocity as well and this one should not cause issues.
RE: Inconsistent smoke animation - Fabrice - 11-23-2022
Before doing your test I tried to reproduce the bug and know the sim is fine...I dont understand.
If the problem re-appears (I hope not) I'll save the scene apart to make the "Object Velocity to 0.0" test...
RE: Inconsistent smoke animation - Kresimir Tkalcec - 11-23-2022
Hello,
No probems - just let me know if it reappears.
RE: Inconsistent smoke animation - Fabrice - 11-23-2022
After checking the bug is here bug at a different frame (515).
I rendered the sim with velocity at 1 (default) and at 0 and the bug happens at 515 in both versions.
I can mail you the previews or the cache folders if you want.
RE: Inconsistent smoke animation - Kresimir Tkalcec - 11-23-2022
Does caches have saved velocities?
If so, could you please send just 3 caches - 2 caches right before this pop happens and one cache where this pop happens so I can check velocity field.
support@afterworks.com
Thank you!
RE: Inconsistent smoke animation - Fabrice - 11-23-2022
Here they are :
https://protozoaire.filemail.com/d/hvkishxeuavdofx
The pop happens at 515, I sent you 513 to 516 (just in case).
For velocity=1 and velocity=0.
I dont know if they have "velocity field".
(dont know were it is...)
Thanks for taking the time!
Just for testing purpose in the same scene I put the tyflow faces on a still teapot (instead of an animated character)
and there doesnt seem to be any bug.
RE: Inconsistent smoke animation - Kresimir Tkalcec - 11-23-2022
Thank you for the cache files, but unfortunately they don't have velocity exported so I can't see whether popping velocities come uniformly from the source, or something else is in question.
Would it be possible to export velocities as well, or even provide the scene ?
RE: Inconsistent smoke animation - Fabrice - 11-24-2022
(11-23-2022, 07:36 PM)Kresimir Tkalcec Wrote: Thank you for the cache files, but unfortunately they don't have velocity exported so I can't see whether popping velocities come uniformly from the source, or something else is in question.I sent you the scene by mail (it uses Max 2021 + tyFlow 1.011)
Would it be possible to export velocities as well, or even provide the scene ?
RE: Inconsistent smoke animation - Fabrice - 11-24-2022
(11-24-2022, 10:47 AM)Fabrice Wrote:I received your mail on 14:00(11-23-2022, 07:36 PM)Kresimir Tkalcec Wrote: Thank you for the cache files, but unfortunately they don't have velocity exported so I can't see whether popping velocities come uniformly from the source, or something else is in question.I sent you the scene by mail (it uses Max 2021 + tyFlow 1.011)
Would it be possible to export velocities as well, or even provide the scene ?
I re-sent back the link but it looks like you dont receive my mails...
RE: Inconsistent smoke animation - Kresimir Tkalcec - 11-25-2022
Hello,
The main character consists of many individual meshes and what we get from tyflow's mesher seems not to be very usable for sim.
We gave it a try and from the Geom Source we have removed tymesher as a source and have picked those parts. As a result the simulation went fine and
we were able to set Object Velocity parameter back to 1.0 which gave a very nice fluid motion. tymesher returns incosistent mesh where topology changes, so Object Velocity or face velocity cannot be used.
I hope this helps.
RE: Inconsistent smoke animation - Fabrice - 11-25-2022
(11-25-2022, 01:39 PM)Kresimir Tkalcec Wrote: Hello,Thanks for the feedback,
The main character consists of many individual meshes and what we get from tyflow's mesher seems not to be very usable for sim.
We gave it a try and from the Geom Source we have removed tymesher as a source and have picked those parts. As a result the simulation went fine and
we were able to set Object Velocity parameter back to 1.0 which gave a very nice fluid motion. tymesher returns incosistent mesh where topology changes, so Object Velocity or face velocity cannot be used.
I hope this helps.
my problem in I need to emit smoke progressively from a part of his body
(selected by the animated box "ptk_area_BOX" that starts with the head and moves to the full body)
that's why I need tyflow.
RE: Inconsistent smoke animation - Kresimir Tkalcec - 11-25-2022
(11-25-2022, 02:18 PM)Fabrice Wrote:(11-25-2022, 01:39 PM)Kresimir Tkalcec Wrote: Hello,Thanks for the feedback,
The main character consists of many individual meshes and what we get from tyflow's mesher seems not to be very usable for sim.
We gave it a try and from the Geom Source we have removed tymesher as a source and have picked those parts. As a result the simulation went fine and
we were able to set Object Velocity parameter back to 1.0 which gave a very nice fluid motion. tymesher returns incosistent mesh where topology changes, so Object Velocity or face velocity cannot be used.
I hope this helps.
my problem in I need to emit smoke progressively from a part of his body
(selected by the animated box "ptk_area_BOX" that starts with the head and moves to the full body)
that's why I need tyflow.
Could you also emit directly from particles that are progresilvely created on the body instead of mesh that's created from hundreds of small planes (if I got the setup properly)?
RE: Inconsistent smoke animation - Fabrice - 11-27-2022
(11-25-2022, 03:00 PM)Kresimir Tkalcec Wrote:Yes you're right, I did it and now I dont have any "popping" smoke (and it's more straightforward regarding TyFlow setup), thanks for the advice!(11-25-2022, 02:18 PM)Fabrice Wrote:(11-25-2022, 01:39 PM)Kresimir Tkalcec Wrote: Hello,Thanks for the feedback,
The main character consists of many individual meshes and what we get from tyflow's mesher seems not to be very usable for sim.
We gave it a try and from the Geom Source we have removed tymesher as a source and have picked those parts. As a result the simulation went fine and
we were able to set Object Velocity parameter back to 1.0 which gave a very nice fluid motion. tymesher returns incosistent mesh where topology changes, so Object Velocity or face velocity cannot be used.
I hope this helps.
my problem in I need to emit smoke progressively from a part of his body
(selected by the animated box "ptk_area_BOX" that starts with the head and moves to the full body)
that's why I need tyflow.
Could you also emit directly from particles that are progresilvely created on the body instead of mesh that's created from hundreds of small planes (if I got the setup properly)?
RE: Inconsistent smoke animation - Kresimir Tkalcec - 11-28-2022
Glad to hear that alll sims fine now!