/**
  This example is similar to week03_normal_2d_random and week03_gaussian_2d_random, but
  in this case we create a random distribution pattern to position our circles on the
  screen. 
*/

// Create our RNG
CustomRandom rand = new CustomRandom();

void setup() {

    // setup the environment
    size(500, 500);
    background(10);
    smooth();
    colorMode(RGB, 255, 255, 255, 100);
    
    // setup the random distribution we'll use, in this case it looks
    // like hills and troughs
    float[] distrib = {0.4, 0.01, 0.1, 0.4, 0.4, 0.01, 0.01, 0.4, 0.4, 0.01};
    
    // tell the RNG to use our distribution pattern
    rand.useDistribution(distrib);
}

void draw() {
    
    // fade out the background
    fill(10, 10, 10, 1);
    rect(0, 0, width, height);
    
    // set the drawing style for our circles
    fill(32, 64, 128, 100);
    
    // draw 25 circles using numbers from our custom distribution RNG
    for (int i = 0; i < 25; i++) {
      ellipse(rand.getRandom(width), rand.getRandom(height), 20, 20);
    }
}