# Apply a mouse movement (or similar) to the camera
	#
	# `dx` and `dy` are relative mouse movements in pixels.
	fun turn(dx, dy: Float)
	do
		# Moving on x, turn around the y axis
		yaw -= dx*sensitivity
		pitch -= dy*sensitivity

		# Protect rotation around then x axis for not falling on your back
		pitch = pitch.min(pi/2.0)
		pitch = pitch.max(-pi/2.0)
	end