Noise 2D
/**
* Noise2D
* by Daniel Shiffman.
*
* Using 2D noise to create simple texture.
*/
float increment = 0.02f;
void setup() {
size(640, 360);
}
void draw() {
loadPixels();
float xoff = 0.0f; // Start xoff at 0
float detail = map((float)mouseX, 0.0f, (float)width, 0.1f, 0.6f);
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 = 0.0f; // 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) * 255.0f;
// Try using this line instead
//float bright = random(0.0f, 255.0f);
// Set each pixel onscreen to a grayscale value
pixels[x + y * width] = color(bright);
}
}
updatePixels();
}