local ballBuffer = 5

--- Assumes that background image is of size
--- XXX
--- XOX
--- Where each character is the size of the screen, and 'O' is the default view.
function getDrawOffset(screenW, screenH, ballX, ballY)
	local offsetX, offsetY
	if ballY < ballBuffer then
		offsetY = math.max(ballBuffer, -1 * (ballY - ballBuffer))
	else
		offsetY = 0
	end
	if ballX > 0 and ballX < (screenW - ballBuffer) then
		offsetX = 0
	elseif ballX < ballBuffer then
		offsetX = math.max(-1 * screenW, -1 * (ballX - ballBuffer))
	elseif ballX > (screenW - ballBuffer) then
		offsetX = math.min(screenW * 2, -1 * (ballX - ballBuffer))
	end
	return offsetX, offsetY
end