Inspiration:

https://www.instagram.com/p/B2ASNwwnkf3/

​

Context:

https://rtp.media.mit.edu/

*/

​

let caneva_size = 900;

let center = caneva_size / 2;

let circle_size = 6;

let r = 0; // rotations counter

​

function setup() {

//  frameRate(6);

  createCanvas(caneva_size, caneva_size);

  background(0);

  noStroke();

}

​

​

function draw() {

  //sets the origin to the center

  translate(center*0.9, center*1.1);

​

  let rot_div = 10;

  rotate(PI - 4*sqrt(r+1) * TWO_PI / rot_div);

  let thick_noise = map(noise(r), 0,1, 0.9,1.5);

  // parabola fade loop

  for (let offset = 0; offset < center/6; offset += circle_size) {

​

    // basic parabola

    let paralength = center / 9;

​

    for (let x = -paralength; x < paralength; x += 1) {

​

      let brightness = map(abs(x), 0,paralength, 255, 0);

      brightness -= map(offset, 0,center/3, 0,255);

      brightness *= map(noise(offset), 0,1, 0.5,2);

​

      fill(255, brightness/5);

​

      // parabola equation: y = -x²/thickness + offset

      let spiral = map(r , 0,rot_div , -0.15, 0.01) * center;

      offset = center/3 - offset + spiral;

      let thickness = (paralength/4) * thick_noise;

​

      let y = -x*x / thickness + offset;

​

      ellipse(x, y, circle_size, circle_size * 4);

    }

  }

​

  r++; // rotation

  if (r >= rot_div*6) {

    print("done");

    noLoop();

  }

​

}