RaymondZuo301_processing/The Nature of Code/C0_4_randomGaussian/C0_4_randomGaussian.pde
void setup(){
  size(640,360);
  background(0);
}
void draw() {
  float num = randomGaussian();
  float sd = 60;
  float mean = 320;
  float x = sd*num+mean;
  noStroke();
  fill(255, 10);
  ellipse(x, 180, 16, 16);
}