CameraEffectFocusTo = class("CameraEffectFocusTo", CameraEffect)

function CameraEffectFocusTo:ctor(focus, viewPort, duration, listener)
	CameraEffectFocusTo.super.ctor(self)
	self.focus = focus
	self.viewPort = viewPort
	self.duration = duration
	self.finishedListener = function(cameraController)
		if nil ~= listener then
			listener(cameraController)
		end
	end
end

-- override begin
function CameraEffectFocusTo:DoStart(cameraController)
	self.originalZoom = cameraController.zoom
	cameraController:ResetCurrentInfoByZoom(1)

	if nil ~= self.offset then
		if nil ~= self.focus then
			cameraController:FocusTo(self.focus, self.offset, self.viewPort, self.duration, self.finishedListener)
		else
			cameraController:FocusTo(self.offset, self.viewPort, self.duration, self.finishedListener)
		end
	else
		if nil ~= self.focus then
			cameraController:FocusTo(self.focus, self.viewPort, self.duration, self.finishedListener)
		else
			cameraController:FocusTo(self.viewPort, self.duration, self.finishedListener)
		end
	end
	
end

function CameraEffectFocusTo:DoEnd(cameraController)
	cameraController:ResetCurrentInfoByZoom(self.originalZoom)
	cameraController:RestoreDefault(self.duration, nil)
end
-- override end