Blooming Circles 03

var num;

var numx;

var nymy;

​

var state;

var t;

​

function setup()

{

  createCanvas(windowWidth * 0.7, windowHeight * 0.7);

  background(239,71,58);  

  noStroke();

  randomSeed(99);

  r = width/21;

  numx = floor(width/r)-1;

  numy = floor(height/r);

  num = numx*numy;

  t = Array(num);

  state = Array(num);

  for(var i = 0; i < num; i++) {

    state[i] = floor(random(9));

    t[i] = random(4.0);

  }

  frameRate(60);

}

​

​

function draw()

{

  clear();

  background(239,71,58);  

  for(var i = 0; i < num; i++) {

    var xp = (i % numx)*r+r;

    var yp = floor((i / numx))*r+r;

    t[i] += 1 / 60.0;

    if(t[i] > 4) {

      t[i] = 0;

    } else if(t[i] > 3) {

      // background           

    } else if(t[i] > 2) {

      fill(255,201,0);

      p = t[i]-2;

      p = 1-cos(PI*p)*cos(PI*p);

      ellipse(xp,yp,1.6*r*p,1.6*r*p);           

     } else if(t[i] > 1) {

      fill(255,201,50);

      p = t[i]-1;

      p = 1-cos(PI*p)*cos(PI*p);

      ellipse(xp,yp,1.0*r*p,1.0*r*p);           

    } else {

      fill(255,201,100);

      p = t[i];

      p = 1-cos(PI*p)*cos(PI*p);

      ellipse(xp,yp,0.7*r*p,0.7*r*p);           

    }

  }

}

​

​