/*

	TUIO C++ Library - part of the reacTIVision project

	http://reactivision.sourceforge.net/

	Copyright (c) 2005-2008 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

#define TUIO_UNDEFINED -1

class TuioPoint {

	protected:

		float xpos, ypos;

		long timestamp;

	public:

	TuioPoint (float xpos, float ypos) {

		this->xpos = xpos;

		this->ypos = ypos;

		timestamp = TUIO_UNDEFINED;

	};

	TuioPoint (TuioPoint *tuioPoint) {

		this->xpos = tuioPoint->getX();

		this->ypos = tuioPoint->getY();

		timestamp = TUIO_UNDEFINED;

	};

	~TuioPoint(){};

	void update (TuioPoint *tuioPoint) {

		this->xpos = tuioPoint->getX();

		this->ypos = tuioPoint->getY();

		timestamp = TUIO_UNDEFINED;

	};

	void update (float xpos, float ypos) {

		this->xpos = xpos;

		this->ypos = ypos;

		timestamp = TUIO_UNDEFINED;

	};

	float getX() { return xpos; };

	float getY() { return ypos; };

	float getDistance(float x, float y) {

		float dx = xpos-x;

		float dy = ypos-y;

		return sqrtf(dx*dx+dy*dy);

	}

	float getDistance(TuioPoint *tuioPoint) {

		float dx = xpos-tuioPoint->getX();

		float dy = ypos-tuioPoint->getY();

		return sqrtf(dx*dx+dy*dy);

	}

	float getAngle(TuioPoint *tuioPoint) {

		float side = tuioPoint->getX()-xpos;

		float height = tuioPoint->getY()-ypos;

		float distance = tuioPoint->getDistance(xpos,ypos);

		float angle = (float)(asin(side/distance)+M_PI/2);

		if (height<0) angle = 2.0f*(float)M_PI-angle;

		return angle;

	}

	float getAngleDegrees(TuioPoint *tuioPoint) {

		return ((getAngle(tuioPoint)/(float)M_PI)*180.0f);

	}

	float getScreenX(int w) { return xpos*w; };

	float getScreenY(int h) { return ypos*h; };

	long getUpdateTime() { return timestamp; };

	void setUpdateTime(long timestamp) { this->timestamp = timestamp; };

};

#endif