Code viewer for World: Coding Challenge 2

See raw JS.

```// Daniel Shiffman
// http://codingtra.in
// http://patreon.com/codingtrain
// Code for this video: https://youtu.be/LG8ZK-rRkXo

var a = 0;

var sponge = [];

function setup() {
createCanvas(400, 400, WEBGL);
// as of p5.js 0.6.0, normal material is no longer the default and
// has to be explicitly selected.
normalMaterial();

// An array of Box objects
// Star with one
var b = new Box(0, 0, 0, 200);
sponge.push(b);
}

function mousePressed() {
// Generate the next set of boxes
var next = [];
for (var i = 0; i < sponge.length; i++) {
var b = sponge[i];
var newBoxes = b.generate();
next = next.concat(newBoxes);
}
sponge = next;
}

function draw() {
background(51);
rotateX(a);
rotateY(a * 0.4);
rotateZ(a * 0.1);
// Show what you've got!
for (var i = 0; i < sponge.length; i++) {
sponge[i].show();
}
a += 0.01;
}

// Daniel Shiffman
// http://codingtra.in
// http://patreon.com/codingtrain
// Code for this video: https://youtu.be/LG8ZK-rRkXo

function Box(x, y, z, r) {
this.pos = createVector(x, y, z);
this.r = r;

this.generate = function() {
var boxes = [];
for (var x = -1; x < 2; x++) {
for (var y = -1; y < 2; y++) {
for (var z = -1; z < 2; z++) {
var sum = abs(x) + abs(y) + abs(z);
var newR = this.r / 3;
if (sum > 1) {
var b = new Box(this.pos.x + x * newR, this.pos.y + y * newR, this.pos.z + z * newR, newR);
boxes.push(b);
}
}
}
}
return boxes;
}

this.show = function() {
push();
translate(this.pos.x, this.pos.y, this.pos.z);
//stroke(255);
//noStroke();
//noFill();
//fill(255);
box(this.r);
pop();
}
}

```
```
```