TuioPoint.h

/*
 TUIO C++ Library
 Copyright (c) 2005-2017 Martin Kaltenbrunner <martin@tuio.org>
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 3.0 of the License, or (at your option) any later version.
 
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
 License along with this library.
*/

#ifndef INCLUDED_TUIOPOINT_H
#define INCLUDED_TUIOPOINT_H

#include "TuioTime.h"
#include "OneEuroFilter.h"
#include <cmath>

#ifndef M_PI
#define M_PI    3.14159265358979323846
#endif

namespace TUIO {

    class LIBDECL TuioPoint {

    protected:
        float xpos;
        float ypos;
        TuioTime currentTime;
        TuioTime startTime;

        OneEuroFilter *xposFilter;
        OneEuroFilter *yposFilter;
        float posThreshold;

    public:
        TuioPoint (float xp, float yp);

        TuioPoint (TuioTime ttime, float xp, float yp);

        TuioPoint (TuioPoint *tpoint);

        virtual ~TuioPoint(){
            if (xposFilter) delete xposFilter;
            if (yposFilter) delete yposFilter;
        };

        void update (TuioPoint *tpoint);

        void update (float xp, float yp);

        void update (TuioTime ttime, float xp, float yp);

        
        float getX() const;
        
        float getY() const;
        
        float getDistance(float xp, float yp) const;

        float getScreenDistance(float xp, float yp, int w, int h) const;
        float getDistance(TuioPoint *tpoint) const;
        float getAngle(float xp, float yp) const;
        float getAngle(TuioPoint *tpoint) const;
        float getAngleDegrees(float xp, float yp) const;
        float getAngleDegrees(TuioPoint *tpoint) const;
        int getScreenX(int width) const;
        /*
         * Returns the Y coordinate in pixels relative to the provided screen height. 
         *
         * @param   height  the screen height
         * @return  the Y coordinate of this TuioPoint in pixels relative to the provided screen height
         */
        int getScreenY(int height) const;
        TuioTime getTuioTime() const;
        TuioTime getStartTime() const;
        
        void addPositionThreshold(float thresh);
        
        void removePositionThreshold();

        void addPositionFilter(float mcut, float beta);

        void removePositionFilter();
    };
}
#endif