The Evil Eye

function setup() {

  createCanvas(600, 600);

  colorMode(HSL, 1);

  noStroke();

}

​

function cosn(v){

  return cos(v*TWO_PI)* 0.5 + 0.5

}

​

function invCosn(v){

  return 1 - cos(v);

}

​

  var radius = Math.sqrt(0.05);

  var PHI = (1 + Math.sqrt(5)) / 2;

  var dotsize = 0.009;

​

  let t;

  var frames = 1000;

function draw() {

  background(0);

  fill(255);

  translate(width/2,height/2);

  push();

  beginShape();

  vertex(-250,0);

  bezierVertex(-130,-220,130,-220,250,0);

  bezierVertex(130,220,-130,220,-250,0)

  endShape();

  pop();

  fill(255, 244, 0);

  circle(0,0,280);

  t = fract(frameCount / frames);

  t = mouseX/width;

  if(mouseX>width){

    mouseX = 0;

  } else {

    mouseXY = 0;

  }

  scale(width, height);

  fill(255);

  var count=2000 * invCosn(t);

  for (let i=0; i<count* t; i++){

    for (let f = i / count; f<1; ++f){

    var a = i * PHI; 

    var dist = f*radius/1.05;

    var x = cos(a*TWO_PI) * dist;

    var y = sin(a*TWO_PI) * dist;

    var sig = pow(cosn(f - t *15), 0.1);

    var r = sig * dotsize;

    const hue = fract(t + f * 0.5);

    const sat = 1;

    const light = 0.6 * sig + 0.25;

    const clr = color(hue, sat, light);

    fill(clr);

    circle(x,y,r);

    }

  }

}

​