TuioPoint.h

/*
 TUIO C++ Library - part of the reacTIVision project
 http://reactivision.sourceforge.net/
 
 Copyright (c) 2005-2009 Martin Kaltenbrunner <mkalten@iua.upf.edu>
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 
 This program 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 General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef INCLUDED_TUIOPOINT_H
#define INCLUDED_TUIOPOINT_H
#include "TuioTime.h"
#include <iostream>

#ifndef M_PI
#define M_PI    3.14159265358979323846

#endif

namespace TUIO {
        
        class TuioPoint {
                
        protected:
                float xpos;
                float ypos;
                TuioTime currentTime;
                
        public:
                TuioPoint (float xp, float yp) {
                        xpos = xp;
                        ypos = yp;
                        currentTime = TuioTime::getSessionTime();
                };
        
                TuioPoint (TuioTime ttime, float xp, float yp) {
                        xpos = xp;
                        ypos = yp;
                        currentTime = ttime;
                };
                
                TuioPoint (TuioPoint *tpoint) {
                        xpos = tpoint->getX();
                        ypos = tpoint->getY();
                        currentTime = TuioTime::getSessionTime();
                };
                
                ~TuioPoint(){};
                
                void update (TuioPoint *tpoint) {
                        xpos = tpoint->getX();
                        ypos = tpoint->getY();
                };
                
                void update (float xp, float yp) {
                        xpos = xp;
                        ypos = yp;
                };              
                
                void update (TuioTime ttime, float xp, float yp) {
                        xpos = xp;
                        ypos = yp;
                        currentTime = ttime;
                };

                
                float getX() { 
                        return xpos;
                };
                
                float getY() {
                        return ypos;
                };
                
                float getDistance(float xp, float yp) {
                        float dx = xpos-xp;
                        float dy = ypos-yp;
                        return sqrtf(dx*dx+dy*dy);
                }
                
                float getDistance(TuioPoint *tpoint) {
                        return getDistance(tpoint->getX(),tpoint->getY());
                }
                
                 float getAngle(float xp, float yp) {
                        float side = xpos-xp;
                        float height = ypos-yp;
                        float distance = getDistance(xp,yp);
                        
                        float angle = (float)(asin(side/distance)+M_PI/2);
                        if (height<0) angle = 2.0f*(float)M_PI-angle;
                        
                        return angle;
                }
                
                float getAngle(TuioPoint *tpoint) {
                        return getAngle(tpoint->getX(),tpoint->getY());
                }

                float getAngleDegrees(float xp, float yp) {
                        return ((getAngle(xp,yp)/(float)M_PI)*180.0f);
                }

                float getAngleDegrees(TuioPoint *tpoint) {
                        return ((getAngle(tpoint)/(float)M_PI)*180.0f);
                }
                
                int getScreenX(int width) { 
                        return (int)floor(xpos*width+0.5f);
                };
                
                int getScreenY(int height) {
                        return (int)floor(ypos*height+0.5f);
                };
                
                TuioTime getTuioTime() { 
                        return currentTime;
                };              
        };
};
#endif

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