function setup() {

  createCanvas(500, 500);

  noStroke();

  phase = 0;

  speed = 0.03;

  maxCircleSize = 20;

  numRows = 10;

  numCols = 16;

  numStrands = 2;

  colorA = color(253, 174, 120);

  colorB = color(226, 129, 161);

}

​

function draw() {

  background(4, 58, 74);

  phase = frameCount * speed;

  for(var strand = 0; strand < numStrands; strand += 1) {

    var strandPhase = phase + map(strand, 0, numStrands, 0, TWO_PI);

    for(var col = 0; col < numCols; col += 1) {

      var colOffset = map(col, 0, numCols, 0, TWO_PI);

      var x = map(col, 0, numCols, 50, width - 50);

      for(var row = 0; row < numRows; row += 1) {

        var y = height/2 + row * 10 + sin(strandPhase + colOffset) * 50;

        var sizeOffset = (cos(strandPhase - (row / numRows) + colOffset) + 1) * 0.5;

        var circleSize = sizeOffset * maxCircleSize;

        fill(lerpColor(colorA, colorB, row / numRows));

        ellipse(x, y, circleSize, circleSize);

​

      }

    }

  }

}