post work: Desert HEat, rising hot air, a swim at Chernobyl Spa

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post work: Desert HEat, rising hot air, a swim at Chernobyl Spa // Roundtable

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Post by staigerman // Jun 17, 2007, 5:46am

staigerman
Total Posts: 3
Here's a tutorial in the making, using the new Animated Swap feature

of PD Pro 4.1, to simulate the distortion effect of hot air rising

(can also be used for underwater effects)


http://thebest3d.com/pdpro/tutorials/animswap/index.html (http://thebest3d.com/pdpro/tutorials/animswap)


This terrain was rendered in Carrara but of course you can do similar stuff in TS's latest version. Or you could use the free Bryce 5.5 from download.com

It's always good to have a few companion tools.


In a nutshell, the displacement map DWA was created by vertically

flipping an animation containing snowfall. Lots of snowfall, to the

point where you don't see or recognize a few distinct snow flakes.

Instead, it's a whole 'wall' of particles moving like through rush

hour. Large flakes, lots of them. And not too much contrast either

unless you want it crazy distorted.


I also used an alpha channel with progressive transition (linear alpha

fader) so the amount of distortion is stronger up high and down low.

As a result and side effect, when the camera moves sideways fast and

you see the edge of the sand dune go from high to low along the slope,

you see a ghost image, like double-vision. Not intended, but actually

a neat effect when you want to convey the looks and feels of

fata-morganas and you're about to collapse from this desert heat.


Towards the end of the animation you'll see also that we yanked up the intensity of the displacement. This can of course be overdone, and we did. Could be good for an effect showing hot bubbly waters in a jaccuzzi, at a Cousteau meeting a volcanic vent in 8000-meter deep ocean waters, or a healthy swim at Chernobyl Sports & Spa just seconds before your journey to China ;-)




Welcome to Death Valley


-Philip

Post by 3dvisuals dude // Jun 17, 2007, 2:57pm

3dvisuals dude
Total Posts: 1703
pic
The video says it all without saying a word. :cool:

Nice companion tool for a 3D Pipeline at 119 bucks, looks like a winner for punching out good special movie effects rapidly.

Thanks for the "heads up."

- 3dvisuals dude

Post by staigerman // Jun 17, 2007, 7:46pm

staigerman
Total Posts: 3
And just FYI here is a tutorial with an earlier version for TrueSpace users:


http://www.caligari.com/News/news_oct2004/tipsandtricks.html

Post by Leif // Jun 18, 2007, 9:44am

Leif
Total Posts: 276
pic
Welcome to Death Valley


Good! When we come we'll kick it around and make some LIFE :) !!!

Post by frootee // Jun 18, 2007, 10:13am

frootee
Total Posts: 2667
pic
Looks like a really cool effect.


Frootee


P.S. Leif: Death Valley is actually an area in the desert of California, renowned for extremely hot temperatures.
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