Why multiply camera radius by 1.5?

[trusktr]

Why do you multiply the camera radius by 1.5?

cameraMatrix = m4.translate(cameraMatrix, 0, 0, radius * 1.5);

Instead of making the radius 200, you could just make it 300. So do we need the 1.5?

[greggman]

The radius defines the radius of the circle of Fs. We want the camera to be outside that circle not on that circle.

Yes, you could just make it 300. As it is though it will always be outside the circle of Fs