/** * Noise2D * by Daniel Shiffman. * * Using 2D noise to create simple texture. */ float increment = 0.02; void setup() { size(640, 360); } void draw() { loadPixels(); float xoff = 0.0; // Start xoff at 0 float detail = map(mouseX, 0, width, 0.1, 0.6); noiseDetail(8, detail); // For every x,y coordinate in a 2D space, calculate a noise value and produce a brightness value for (int x = 0; x < width; x++) { xoff += increment; // Increment xoff float yoff = 0.0; // For every xoff, start yoff at 0 for (int y = 0; y < height; y++) { yoff += increment; // Increment yoff // Calculate noise and scale by 255 float bright = noise(xoff, yoff) * 255; // Try using this line instead //float bright = random(0,255); // Set each pixel onscreen to a grayscale value pixels[x+y*width] = color(bright); } } updatePixels(); }