sketch = function( p ) {
let step = 10;
p.setup = () => {
p.createCanvas(p.windowWidth, 800);
p.background(0);
p.noStroke();
p.noLoop();
}
p.draw = () => {
for (let x = 0; x < p.width; x+=step) {
for (let y = 0; y < p.height; y+=step) {
let c = 255 * p.noise(0.01 * x, 0.01 * y);
p.fill(c);
p.rect(x, y, step, step);
}
}
}
}