Re: Creating an ocean of text layers, all reacting to a displacement map

I wasn't suggesting that you sample the position at the previous frame, but rather, sample the luminance a small distance to the left and right of the layer's position (at the current frame) so you can then use Math.atan2() to calculate the slope of the wave for that layer.

Let me ask you this--does your visible wave just consist of the text layers? If so, I think I might have a much simpler solution for you.

Dan