Ripple hydra
From Adobe Labs
[edit]
Ripple source code
/*****************************************************************************
*
* Author: Joa Ebert
* http://blog.je2050.de
* Contact: j -at- je2050.de
*
*****************************************************************************/
kernel Ripple
< nameSpace: "popforge::ImageProcessing";
vendor: "Joa Ebert";
version: 1;
description: "Applies a sine wave distortion";
>
{
parameter float2 frequency<
minValue: float2(0.0);
maxValue: float2(0.5);
defaultValue: float2(0.06125);
description: "Frequency of the sine wave";
>;
parameter float2 amplitude<
minValue: float2(0.0);
maxValue: float2(64.0);
defaultValue: float2(4.0);
description: "Amplitude of the sine wave";
>;
void evaluatePixel(in image4 source, out pixel4 result)
{
float2 xy = outCoord();
xy += amplitude * sin( xy.yx * frequency.xy );
result = sampleLinear(source,xy);
}
}
