# Rotation matrix produced by the current rotation of the camera
	protected fun rotation_matrix: Matrix
	do
		var view = new Matrix.identity(4)

		# Rotate the camera, first by looking left or right, then up or down
		view.rotate(yaw,   0.0, 1.0, 0.0)
		view.rotate(pitch, 1.0, 0.0, 0.0)
		view.rotate(roll,  0.0, 0.0, 1.0)

		return view
	end