let dot2 = 20;

​

function setup() {

  // pixelDensity(3);

  createCanvas(800, 800);

  background(32,32,32);

  slider = createSlider(1, PI, TWO_PI, 1);

}

​

function draw() {

    noStroke();

    translate(width/2, height/2);

    let block = frameCount * 0.01;

    fill(160, 180, 230, 20);

    for(let i = 0; i < dot1; i++) {

        let angle = map(i, 0, dot1, 0, TWO_PI);

        angle = slider.value();

        for(let j = 0; j < dot2; j++) {

        let angle2 = map(j, 0, dot2, 0, TWO_PI);

        let radius = 100 * sin(block);

        let x = 1/sin(angle + angle2 + block) * radius

        let y = 1/tan(angle + block) * radius

        let  size = sin(block) * 4

        ellipse(x, y, size, size)

    }

}

}