43 lines
1.0 KiB
Plaintext
43 lines
1.0 KiB
Plaintext
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/**
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* Wave Gradient
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* by Ira Greenberg.
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*
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* Generate a gradient along a sin() wave.
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*/
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float angle = 0;
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float px = 0, py = 0;
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float amplitude = 30;
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float frequency = 0;
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float fillGap = 2.5;
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color c;
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int colorRange = 255;
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int ncycles = 500;
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void setup() {
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size(640, 360);
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background(200);
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noLoop();
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}
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void draw() {
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for (int i =- ncycles; i < height+ncycles; i++){
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// Reset angle to 0, so waves stack properly
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angle = 0;
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// Increasing frequency causes more gaps
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frequency+=.01;
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for (float j = 0; j < width+ncycles; j++){
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py = i + sin(radians(angle)) * amplitude;
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angle += frequency;
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c = color(abs(py-i)*colorRange/amplitude, colorRange-abs(py-i)*colorRange/amplitude, j*((colorRange * 1.0)/(width+(int)(ncycles * 0.66))));
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// Hack to fill gaps. Raise value of fillGap if you increase frequency
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for (int filler = 0; filler < fillGap; filler++){
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set(int(j-filler), int(py)-filler, c);
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set(int(j), int(py), c);
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set(int(j+filler), int(py)+filler, c);
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}
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}
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}
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}
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