function setup() {
  createCanvas(800, 800);
  noFill();

  shapes.push(new Shape(width / 2, height / 2, width));
}
Place stacked circles of randomised heights at the mouse position
to create a moire effect drawing

MOUSE
mouse              : place circle

KEYS
s                   : save png

CONTRIBUTED BY
[Niels Poldervaart](http://NielsPoldervaart.nl)