/*****************************************************************************************
*                                                                                       *
* OpenSpace                                                                             *
*                                                                                       *
* Copyright (c) 2014-2016                                                               *
*                                                                                       *
* Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
* software and associated documentation files (the "Software"), to deal in the Software *
* without restriction, including without limitation the rights to use, copy, modify,    *
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
* permit persons to whom the Software is furnished to do so, subject to the following   *
* conditions:                                                                           *
*                                                                                       *
* The above copyright notice and this permission notice shall be included in all copies *
* or substantial portions of the Software.                                              *
*                                                                                       *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
****************************************************************************************/

#ifndef __DISTANCESWITCH_H__
#define __DISTANCESWITCH_H__

// open space includes
#include <openspace/rendering/renderable.h>
#include <openspace/properties/stringproperty.h>
#include <openspace/util/updatestructures.h>
#include <openspace/util/powerscaledcoordinate.h>
#include <openspace/util/powerscaledscalar.h>

#include <vector>

namespace openspace {


/**
	Selects a specific Renderable to be used for rendering, based on distance to the 
	camera
*/
class DistanceSwitch {
public:
	DistanceSwitch();
	virtual ~DistanceSwitch();

	bool initialize();
	bool deinitialize();
	bool isReady() const;

	/**
		Picks the first Renderable with the associated maxDistance greater than the 
		current distance to the camera
	*/
	void render(const RenderData& data);
	void update(const UpdateData& data);

	/**
		Adds a new renderable (first argument) which may be rendered only if the distance 
		to the camera is less than maxDistance (second argument)
	*/
	void addSwitchValue(std::shared_ptr<Renderable> renderable, double maxDistance);

private:
	

	std::vector<std::shared_ptr<Renderable>> _renderables;
	std::vector<double> _maxDistances;

};
} // openspace
#endif //__DISTANCESWITCH_H__
