OpenSpace/modules/touch/include/TouchInteraction.h

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 * OpenSpace                                                                             *
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 * Copyright (c) 2014-2017                                                               *
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#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/openspaceengine.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/properties/scalar/boolproperty.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; // never used
	double localRoll; 
};
struct ScaleFactor {
	double zoom;
	double globalRot;
	double localRot; // pan
	double globalRoll; // never used
	double localRoll; // roll
};
struct SelectedBody { 
	int id;
	SceneGraphNode* node;
	glm::dvec3 coordinates;
};
struct FunctionData {
	std::vector<glm::dvec3> selectedPoints;
	std::vector<glm::dvec2> screenPoints;
	int nDOF;
	glm::dvec2(*castToNDC)(glm::dvec3, Camera&, SceneGraphNode*, double);
	double(*distToMinimize)(double* par, int x, void* fdata);
	Camera* camera;
	SceneGraphNode* node;
	double aspectRatio;
};

#define ROT 0
#define PINCH 1
#define ROLL 2
#define PAN 3
#define PICK 4
#define maxTapTime 300

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);
		bool gui(const std::vector<TUIO::TuioCursor>& list);
		void manipulate(const std::vector<TUIO::TuioCursor>& list);
		void trace(const std::vector<TUIO::TuioCursor>& list);
		int 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 decelerate();
		void clear();
		void tap();

		// Get & Setters
		Camera* getCamera();
		SceneGraphNode* getFocusNode();
		void setFocusNode(SceneGraphNode* focusNode);
		void setCamera(Camera* cam);

	private:
		Camera* _camera;
		SceneGraphNode* _focusNode = nullptr;

		properties::StringProperty _origin;
		properties::FloatProperty _touchScreenSize;
		VelocityStates _vel;
		VelocityStates _lastVel;
		ScaleFactor _friction;
		ScaleFactor _sensitivity;
		double _projectionScaleFactor;
		double _currentRadius;
		double _slerpTime;
		TUIO::TuioTime _time;
		bool _directTouchMode;
		bool _tap;
		bool _doubleTap;
		bool _lmSuccess;
		properties::BoolProperty _guiON;
		
		
		std::vector<SelectedBody> _selected;
		LMstat _lmstat;
		glm::dquat _toSlerp;
};

} // openspace namespace

#endif // __OPENSPACE_TOUCH___INTERACTION___H__