Default at 0.8
	# Field of view in radians on the vertical axis of the screen
	#
	# Default at `0.8`
	var field_of_view_y = 0.8 is writable
					lib/gamnit/cameras.nit:54,2--57,38
				
	redef fun field_of_view_y=(value)
	do
		super
		mvp_matrix_cache = null
	end
					lib/gamnit/cameras_cache.nit:70,2--74,4