/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2017                                                               *
 *                                                                                       *
 * 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 __OPENSPACE_TOUCH___INTERACTION___H__
#define __OPENSPACE_TOUCH___INTERACTION___H__

#include <modules/touch/include/TuioEar.h>
#include <modules/touch/touchmodule.h>
#include <modules/touch/ext/levmarq.h>

#include <openspace/util/camera.h>
#include <openspace/scene/scenegraphnode.h>
#include <openspace/engine/wrapper/windowwrapper.h>
#include <openspace/interaction/interactionmode.h>
#include <openspace/interaction/interactionhandler.h>
#include <openspace/properties/propertyowner.h>
#include <openspace/properties/vectorproperty.h>
#include <openspace/network/parallelconnection.h>

#ifdef OPENSPACE_MODULE_GLOBEBROWSING_ENABLED
#include <modules/globebrowsing/tile/tileindex.h>
#include <modules/globebrowsing/geometry/geodetic2.h>
#include <modules/globebrowsing/geometry/geodetic3.h>
#endif

#include <list>

#define ROT 0
#define PINCH 1
#define PAN 2
#define ROLL 3
#define PICK 4

namespace openspace {

struct VelocityStates {
	double zoom;
	glm::dvec2 globalRot;
	glm::dvec2 localRot;
	double globalRoll;
	double localRoll;
};
struct ScaleFactor {
	double zoom;
	double globalRot;
	double localRot;
	double globalRoll;
	double localRoll;
};
struct InteractionType {
	bool rot;
	bool pinch;
	bool pan;
	bool roll;
	bool pick;
};
struct SelectedBody { 
	int id;
	SceneGraphNode* node;
	glm::dvec3 coordinates;
};

struct FunctionData {
	std::vector<glm::dvec3> selectedPoints;
	std::vector<glm::dvec2> screenPoints;
	int nDOF;
	glm::dvec3(*toSurface)(glm::dvec2, Camera*, SceneGraphNode*, double);
	Camera* camera;
	SceneGraphNode* node;
	double aspectRatio;
};

using Point = std::pair<int, TUIO::TuioPoint>;

class TouchInteraction : public properties::PropertyOwner
{
	public:
		TouchInteraction();
		~TouchInteraction();
		
		void update(const std::vector<TUIO::TuioCursor>& list, std::vector<Point>& lastProcessed);
		void trace(const std::vector<TUIO::TuioCursor>& list);
		void interpret(const std::vector<TUIO::TuioCursor>& list, const std::vector<Point>& lastProcessed);
		void accelerate(const std::vector<TUIO::TuioCursor>& list, const std::vector<Point>& lastProcessed);
		void step(double dt);
		void configSensitivities(double dist);
		void decelerate();
		glm::dvec2 modelToScreenSpace(glm::dvec3 vec, SceneGraphNode* node);
		void clear();
		void tap();

		// Get & Setters
		Camera* getCamera();
		SceneGraphNode* getFocusNode();
		double getFriction();
		double getSensitivity();

		void setFocusNode(SceneGraphNode* focusNode);
		void setCamera(Camera* cam);
		void setFriction(double friction);
		void setSensitivity(double sensitivity);

	private:

		// could be removed
		double _baseSensitivity;
		double _baseFriction;
		double _minHeightFromSurface;

		Camera* _camera;
		SceneGraphNode* _focusNode = nullptr;
		properties::StringProperty _origin;
		properties::Vec2Property _touchScreenSize;
		globebrowsing::RenderableGlobe* _globe;

		bool _tap;
		bool _directTouchMode;
		double _projectionScaleFactor;
		double _currentRadius;
		std::vector<SelectedBody> _selected;
		InteractionType _action;
		
		LMstat _lmstat;
		glm::dvec3 _centroid;
		VelocityStates _vel;
		ScaleFactor _friction;
		ScaleFactor _sensitivity;

};

} // openspace namespace

#endif // __OPENSPACE_TOUCH___INTERACTION___H__