Renders a 3D scene using only the CPU (CPU heavy!)
- w: move along +Z
- s: move along -Z
- a: move along -X
- d: move along +X
- q: move along +Y
- e: move along -Y
- arrow keys: rotate the camera
- z: Rotate all objects around their centre along the Z axis
- x: Rotate all objects around their centre along the X axis
- c: Rotate all objects around their centre along the Y axis