gistfile1.txt

let grid = 40;
let lastrand = 0;
function setup() {
  createCanvas(400, 400);
  ellipseMode(CORNER);
}


function seed(x) {
	lastrand = x;
}

function myrand(x) {
	// This is probably slow in JS
	lastrand = (lastrand * 1103515245 + 12345) % 0x7fffffff
	return lastrand % x;
}

function draw() {
  background(220);
	seed(42);
  for (let i = 0; i < grid; i++) {
    for (let j = 0; j < grid; j++) {
      fill(myrand(255));
      ellipse(i * (width/grid),
              j * (height/grid),
              10, 10);
    }
  }
}