function setup() {
  createCanvas(600, 600);
  colorMode(HSB, 360, 100, 100, 100);
  noStroke();
  fill(192, 100, 64, 60);
}
moving corners of rectangles in a grid

MOUSE
position x          : corner position offset x
position y          : corner position offset y
left click          : random position

KEYS
s                   : save png