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Hammo
04-18-2006, 05:00 AM
Hey there,

I have been working on a fish tank and cannot work out how to accuratley animate the water surface. I have tried a few other techniques but it doesnt look like the water is interacting with the edges of the fishtank. i release that some people use nulls to animate objects is this possible with my water surface.

Any help would be greatly apreciated.
thanks

Hammo

HowardM
04-18-2006, 08:34 AM
Do a search here, SpinQuad and CGtalk, there are plenty of ways to do this with ClothFX to fake the water surface, but if you want total realism, RealFlow is the answer :D

loki74
04-18-2006, 10:51 PM
If by "accurately" you mean phyisics-based, RealFlow will be just about your only shot. I believe someone wrote a plugin that did phyisics-based wave simulation similar to RealWave, but I dont remember who.

That said, for most purposes, I do not think that in many cases a physics based solution is completely necessary; as Howard points out, ClothFX could probably do the trick. And dont expect something completely accurate out of even RF--these are meant to visually sell the image, not 100% accurately model what is physically happening.

Edbittner
04-19-2006, 07:01 AM
You can always fake it of course.......
From a scene I d-loaded called half and half
E.

jeremyhardin
04-19-2006, 08:27 AM
these guys are spot on. for accuracy in physics, realflow is it. however, i'm all for the clever fakes (such as Edbittner's above) when accuracy isn't required.

here are some water tests I did with Shift's Boolean Texture and animated displacement maps:
http://www.spinquad.com/forums/showpost.php?p=120038&postcount=7
http://www.spinquad.com/forums/showpost.php?p=120039&postcount=8

and here are some water tests using blender and exporting to LW:
http://www.newtek.com/forums/showthread.php?t=44032
http://www.newtek.com/forums/showthread.php?t=45593

so you've got native options (cloth, displacements, fakes), free 3rd party options (blender), and commercial 3rd party options (realflow). :thumbsup:

starbase1
04-21-2006, 03:33 AM
Just to add to JH's comprehensive response, there's a free flownoise shader just cropped up on Flaw, (www.flay.som), very handy for moving fluid effects...

Nick