The simplest shape to create is probably a cube so let's start by making a 200×200×200 pixel cube, centred at the origin (0, 0, 0).

## Nodes

Start by defining an array of nodes. Each node is object with x, y and z properties. Notice that the nodes represent all eight possible permutation of 100 and -100.

```
var nodes = [
{x: -100, y: -100, z: -100},
{x: -100, y: -100, z: 100},
{x: -100, y: 100, z: -100},
{x: -100, y: 100, z: 100},
{x: 100, y: -100, z: -100},
{x: 100, y: -100, z: 100},
{x: 100, y: 100, z: -100},
{x: 100, y: 100, z: 100}
];
```