Rainbow

function setup() {

  createCanvas(600, 600);

  background(100);

  rectMode(CENTER)

  noStroke()

  colorMode(HSB,width,100,100)

}

​

function draw() {

  fill(0,10,0); // rect(width/2, height/2, width, height)

  myShape(mouseX,mouseY,50,120);

  myShape(mouseY, mouseX,50,50);

}

​

function myShape(cX,cY,Sz,SqHue) {

  //let cX = 400;

  //let cY = mouseY;

  //let Sz = 100;

  //let SqHue = 100;

  fill(SqHue,25,100)

  rect(cX,cY,Sz,Sz);

  fill(SqHue,50,100)

  rect(cX,cY,0.75*Sz,0.75*Sz)

  fill(SqHue,75,100)

  rect(cX,cY,0.50*Sz,0.50*Sz)

  fill(SqHue,100,100)

  rect(cX,cY,0.25*Sz,0.25*Sz)

}