Fluid dynamic issue

# 1 09-08-2011 , 12:55 PM

Lifetime Member
Join Date: Jul 2011

Posts: 12

Hi guys,

I have a weird problem, indeed I have a 3d container with an emitter and all following a motion path.
The issue is that at the end of the curve (path), the emitter becomes upside down without apparent reason. It means that the emitter axis turn 180 degrees...
For info, I have autoresize enable for the fluid container, but it seems something else is interacting with the emitter position...

Does anyone have already encountered such odd behavior?

Thx
Regis

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# 2 09-08-2011 , 02:40 PM

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Join Date: Jul 2011

Posts: 12

Hi again,

I found out a work around, here is my solution, in the motion path attributes, I just keyframed the World Up Vector in the x position from 1 to -1 when the problem was occuring.
Therefore it works.

Cheers

Regis

user added image

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# 3 26-08-2011 , 12:04 PM

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Join Date: Jul 2011

Posts: 12

Hi there,

I though it could be interesting for anyone occuring such issue.The solution I posted was temporary.
Indeed, to avoid any problem with a fluid following a path is not to attached straight away the emitter to the motion path, but to create a dummy object as a kind of guide (such cube, sphere or whatever), attach it to the path and create a parent constraint between the the dummy object and the emitter.

Hope this could help anybody.

Cheers

regis

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# 4 26-08-2011 , 12:25 PM

SM Tea Boy
Join Date: Apr 2002

Location: Prague

Posts: 3,228

Thanks for posting your solution.

Dave user added image

From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"

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# 5 26-08-2011 , 01:20 PM

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Join Date: Jul 2011

Posts: 12

Hi Dave,

Your very welcome, it's my pleasure if it can help.
I forgot to had that is when fluid is used in auto resize mode (to emulate a fire tail for example), if not of course you could attach directly a fluid 3d container to a motion path without further problem.

Cheers

Regis

PS: Also very happy to be a part of this Maya community user added image

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# 6 08-09-2011 , 12:47 PM

Registered User
Join Date: Dec 2010

Location: Uk

Posts: 193

Any sample of the work?

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# 7 12-09-2011 , 05:16 PM

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Join Date: Jul 2011

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Hi Sircharles,

Here is the link of a version of the project I'm currently working on, showing and illustrating the point of a kind of cartoonish tail effect made with fluids.
Well let's say many things are made with fluids ;o)

https://www.registudio.com/perso/Ruine_v02_CamMove.mp4

Hope you like it.

Cheers
Regis

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# 8 14-12-2011 , 04:08 PM

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Join Date: Dec 2010

Location: Uk

Posts: 193

That is cool, what was it used for.. The project I mean?

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# 9 19-12-2011 , 05:48 AM

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Join Date: Jul 2011

Posts: 12

That is cool, what was it used for.. The project I mean?

Originally Posted by Sircharles

Hi,

Thank you. It was a personal project when I was in school... Inthen modified totally the look of the tail by something say more realistic fire (more or less).
To view more please feel free to check this out: www.registudio.com

Cheers
Regis

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