heat distortion effects

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  03 March 2003
heat distortion effects

hi there ppl,

im looking to do some heat distortion fx
coming from the engines of rocketships.

does anyone have any ideas or links to
specific tuts please ?

i have Max - Photoshop, and
AfterEffects...but not much time.

  03 March 2003
theres a trick you can do with max, create a whole lot of splines coming out of the jet engine. Assign noise modifiers with differing seed values to each one (it should look like a whole lotta waving tentacles) Then if you make them renderable, & turn on object motion blur for them, the motion blur effect will distort the background like a heatwave effect (my memory is a bit fuzzy though - it may be that the splines need to be set _not_ renderable to work - one or the other anyway)

If you need to do it in post, try rendering out a mask for the effect (say a white cylinder on a black background where the blurry bit should be) then use that as a mask in After Effects to do some kind of turbulance displacement effect. (In combustion I would assign a turbulance effect to the mask & use that as the source for the displace modifier)
  03 March 2003
if i am right, the foundry released a plugin someday called "tinderbox" which has a "heat rays"-option, which exactly does, what u are looking for, but i am not sure. check here: http://www.thefoundry.co.uk/

...i'm nothing more than a grain of salt
in the salt of the earth and everything
is grace. [mineral]
  03 March 2003
Tinderbox for SHAKE -- Plugin name is HeatHaze.

Sounds like an helicopter underwater.
  03 March 2003
thx for the help guys !

i dont know why i thought it was achallenge...
kinda easy really...

we got a good effect from
facing particles each with thin wall refraction...

bit slow to render up close though...

i'll play with the splines though - sounds interesting...
flashy slogan here
  03 March 2003
I dont know if this post is too late, but I found an easy way to achieve a heat distortion effect. I rendered out some smoke particles coming out of my jet and rendered it as a seperate pass, then in AE I used the particles emitted from the engine as a displacement map on the background plate. From there you can tweak the settings or animate them to make it more realistic, but it is the quickest method I found.

Hope that helps.

  01 January 2006
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