let inc;

​

function setup() {

    createCanvas(windowWidth, windowHeight)

    noStroke();

    colorMode(HSB)

​

}

​

function draw() {

    background(220, 80, 100);

    inc = TWO_PI / 25;

    for(let i = 0; i < width; i+=1){

        fill(i / 6, 100, 100, 0.7);

        circle(i, i + height/2 * cos(a), 20 + i * sin(a));

        a += inc;

    }

}