// ORIGINAL: https://editor.p5js.org/jpcaldwell/sketches/ajmXgh8xv

// This sketch is a clone of tixy.land

// a minimal creative coding environment

// created by @aemkei

//

// Replace the return statement in

// the tixy() function with your own

// expression to change the animation

*/

​

function setup() {

  createCanvas(350, 350);

}

​

function draw() {

  background(0);

  let t=millis() / 1000;

  let i=0;

  for (let y=0; y<16; y++) {

    for (let x=0; x<16; x++) {

      let s = tixy(t, i, x, y);

      if (s > 0) {

        fill(255);

      } else {

        fill(255, 34, 68);

      }

      ellipse(25 + (x * 20), 25 + (y * 20), min(18, abs(s) * 18));

      i++;

    }

  }

}

​

/*

// Given the [t]ime, pixel [i]ndex, pixel [x], and pixel [y],

// return a value beteen -1 and 1.

// Positive values produce a white pixel, negative values produce red.

// Pixels are scaled relative to the returned value.

*/

​

function tixy(t, i, x, y) {

  // return i / 256;

  //return (x + y) % 2;

  // return random(-1, 1);

  return 3 - (i + t) % 6;

  //return (x + y) / 32;

  //return cos(t + i + x * y);

  //return 4 * t & i & x & y;

  //return sin(x/2) - sin(x-t) - y+6;

  //return x + y - ((t * 10) % 32)

  //return ((x^y)%2?sin:cos)(t)

  //return sin(t-sqrt((x-7.5+sin(t * .75) * 2)**2+(y-7.5+cos(t * .25) * 2)**2));

  //return s=Math.sin,c=Math.cos,(x+y)%2?x*s(t)+y*c(t):y*c(t)+x*s(t);

  //return (((x-8)/y+t*5)&1^1/y*8&1)*y/5;

  //return d=y*y%5.9+1,!((x+t*50/d)&15)/d;

  //return 'p}¶¼<¼¶}p'.charCodeAt(x)&2**y;

  //return x==0 | x==15 | y==0 | y==15;

  // return (x-8)*(y-8) - sin(t)*64;

  // return cos(t + x) % sin(t + y);

}