Hi,
Possible Noob question:
I've been following:
http://allbetsareoff.com/2009/06/ocean-water-effect/
The video results are here: http://vimeo.com/5384704
He uses the Fractal Noise plug-in to make the water and the sky. Starting at 9:45 or so he talks about using an Expression in the 'Offset Turbulence' to create a certain 'speed' of the water.
Programming variables I understand, but I am a total noob when it comes to AE expression variables. The expression he uses is:
X = effect("Fractal Noise")("Offset Turbulence")[0];
[X, time*190]
So it seems like varying the number 190 increases or decreases the speed of the waves.
What I would like to do is have the speed -accelerate- over time. The entire video is going to be prox. 3:25. I was hoping there was something akin to keyframes I could use to make it -very- slow in the beginning, then at a certain point, quicken, then at another point -really- speed up and then finally, slow down again... independent of the sky.
If this is not easily done, I suppose I can render the sky and water separately and use keyframes in Premiere to speed up/slow down, but I figured I'd use this as a learning opportunity.
SO: Is there a way to assign a variable to that 'constant' value (190) which is based on the time position? Pseudo Code:
X = effect("Fractal Noise")("Offset Turbulence")[0];
[X, time* if(CurrentPositionInSeconds<200) ? 190 : 60]
Ideas?
TIA,
---JC