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ae7b1ad056
processing-js 0.4 has been merged in some relevant parts basic and topic scripts added for test color handling fixed, more scripts show up now
31 lines
1.2 KiB
Plaintext
31 lines
1.2 KiB
Plaintext
void setup() {
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size(50,50);
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frameRate(30);
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}
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void draw() {
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loadPixels();
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float n = (mouseX * 10.0) / width;
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float w = 16.0; // 2D space width
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float h = 16.0; // 2D space height
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float dx = w / width; // Increment x this amount per pixel
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float dy = h / height; // Increment y this amount per pixel
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float x = -w/2; // Start x at -1 * width / 2
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for (int i = 0; i < width; i++) {
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float y = -h/2; // Start y at -1 * height / 2
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for (int j = 0; j < height; j++) {
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float r = sqrt((x*x) + (y*y)); // Convert cartesian to polar
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float theta = atan2(y,x); // Convert cartesian to polar
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// Compute 2D polar coordinate function
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float val = sin(n*cos(r) + 5 * theta); // Results in a value between -1 and 1
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//float val = cos(r); // Another simple function
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//float val = sin(theta); // Another simple function
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// Map resulting vale to grayscale value
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pixels[i+j*width] = color((val + 1.0) * 255.0/2.0); // Scale to between 0 and 255
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y += dy; // Increment y
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}
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x += dx; // Increment x
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}
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updatePixels();
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}
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