void setup()
{
  size(600,400);
  noStroke();
  colorMode(RGB, 255, 255, 255, 100);
  background(253, 249, 231);
  fill(246, 150, 14);
  ellipseMode(CENTER_DIAMETER);

}

float angle;
float rate;
int a;
float b;
int dotsize;
float rain;
int density;

void loop(){

dotsize = (10+mouseY/6);

  density = dotsize;
  rows();

}

void row(){


  for(a=density; a<width; a = (a+density)){
    cilium();
  }
}

void rows(){
  for(b=density; b<height; b = (b+density)){
    row();
  }
}

void cilium(){
  if(mousePressed) {
    rate = 0;
  } else {
    rate = (mouseX*.001);
  }
  angle = angle + rate;
  translate(a, b);
  rotate(angle);
  ellipse(0, 2, (dotsize/2), (dotsize/2));
  rotate(-angle);
  translate(-a, -b);
}