07 July 2009 | |
![]() |
|
virtualpoo
portfolio
Gene Crucean
VFX/CG Sup - Generalist
Los Angeles,
USA
|
Fume - Animated object is behind fire sim
I have a simple animation with an object animating from point a to point b. It moves kind of quickly but I'm having an issue where the fire is actually simulating in front of the object. It looks like it might be about a single frame distance.
Does anyone know why this is happening? And is there anything I can do to stop it from happening? cheers |
07 July 2009 | |
![]() |
|
virtualpoo
portfolio
Gene Crucean
VFX/CG Sup - Generalist
Los Angeles,
USA
|
Example attached
Last edited by visualboo : 07 July 2009 at 05:32 PM. |
07 July 2009 | |
![]() |
|
Configurator
portfolio
John Rand
still wandering the binary void
salt lake city,
USA
|
Wow that is odd!
What are your Simulation Steps set to? Nice Flames ![]() __________________
poof ~>Vimeo<~ |
07 July 2009 | |
![]() |
|
virtualpoo
portfolio
Gene Crucean
VFX/CG Sup - Generalist
Los Angeles,
USA
|
Ah only 1. I'll play with that setting a bit. Thanks for the input.
|
07 July 2009 | |
![]() |
|
virtualpoo
portfolio
Gene Crucean
VFX/CG Sup - Generalist
Los Angeles,
USA
|
The help docs make that setting seem like it would fix this but no such luck.
|
07 July 2009 | |
![]() |
|
Configurator
portfolio
John Rand
still wandering the binary void
salt lake city,
USA
|
Yes, typically fast moving objects need more Sim Steps for better accuracy.
You don't happen to have a hidden teapot that is in the object source by any chance, do you? And How fast is that Teapot moving? How many frames until it completes the circle? __________________
poof ~>Vimeo<~ |
07 July 2009 | |
![]() |
|
Frequenter
portfolio
Rick S. Fuentealba
FX
Los Angeles,
USA
|
Your object emitter velocity might also be coming into play here , since it's moving forward, it might be adding forward momentum to the actual smoke.
|
08 August 2009 | |
![]() |
|
precise defab worker
portfolio
Hristo Velev
MD/FX artist
Bottleship VFX
Bulgaria
|
Yeah, Fuentealba is right. In your source, in the velocities parameters, you have 'object's' - reduce that
![]() |
08 August 2009 | |
![]() |
|
virtualpoo
portfolio
Gene Crucean
VFX/CG Sup - Generalist
Los Angeles,
USA
|
Thanks for the replies guys. Sorry I'm an XSI guy using fume for the first time
![]() I have velocity set to 0. Though it didn't seem to have any effect. I also upped the simulation steps to 5 with no effect. I attached the scene if anyone is willing to check it out. cheers |
08 August 2009 | |
![]() |
|
Frequenter
portfolio
Rick S. Fuentealba
FX
Los Angeles,
USA
|
Originally Posted by visualboo:
Thanks for the replies guys. Sorry I'm an XSI guy using fume for the first time
![]() I have velocity set to 0. Though it didn't seem to have any effect. I also upped the simulation steps to 5 with no effect. I attached the scene if anyone is willing to check it out. cheers Are you running Max 2010? I'm trying to open your scene in 2009 but not being able to. |
08 August 2009 | |
![]() |
|
virtualpoo
portfolio
Gene Crucean
VFX/CG Sup - Generalist
Los Angeles,
USA
|
Ah yes sorry. 2010
|
08 August 2009 | |
![]() |
|
Configurator
portfolio
John Rand
still wandering the binary void
salt lake city,
USA
|
Well first, be kind, post a sample scene with local/no paths
![]() Uh umm... your teapot... or should I say Fume is working as it should, it is your teapot that needs to layoff the Starbucks Triple Espresso's ![]() I slowed your teapot down from 24 frames (one time around the path) to 200 frames, the issue is now apparent. ![]() You just happen to be rendering a frame when the teapot is coming back instead of it apex forward. Or it happens that it is so quick that it will always render the teapot on the trail end of the inner loop. __________________
poof ~>Vimeo<~ Last edited by JohnnyRandom : 08 August 2009 at 09:53 PM. |
08 August 2009 | |
![]() |
|
virtualpoo
portfolio
Gene Crucean
VFX/CG Sup - Generalist
Los Angeles,
USA
|
Sorry about the paths. And thanks for taking the time to look at this.
Nice find btw. Looking at the keys, the interpolation was getting set to bezier which made the tangents fail. Before: http://www.genecrucean.com/misc/spe...ster_Before.jpg After a quick scale: http://www.genecrucean.com/misc/spe...ester_After.jpg Even after setting the keys to linear interpolation and cranking a few settings, it still seems to have this effect. Is there a known object speed limitation with Fume? |
08 August 2009 | |
![]() |
|
Configurator
portfolio
John Rand
still wandering the binary void
salt lake city,
USA
|
I recreated your scene albeit for the spiral (not sure how you acquired its motion), and I cannot seem to replicate the issue.
My guess is something buggy in the scene file. Below this is at 3 sim step and it is noticable by the stepping close to the teapot but anyway... ![]() __________________
poof ~>Vimeo<~ Last edited by JohnnyRandom : 08 August 2009 at 09:42 PM. |
08 August 2009 | |
![]() |
|
virtualpoo
portfolio
Gene Crucean
VFX/CG Sup - Generalist
Los Angeles,
USA
|
Odd. Thanks for taking the time to play with this a little. I'm still experimenting.
|
Thread Closed share thread |
«
Previous Thread
|
Next Thread
»
|
|
|