/*
 * PVVMUD a 3D MUD
 * Copyright (C) 1998-1999  Programvareverkstedet (pvv@pvv.org)
 *
 * 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 _DIRECTION_H
#define _DIRECTION_H

#include "object.H"
#include <iostream.h>

class CDirection: public CObject {

  double direction[3];

public:
  CDirection();
  CDirection(double * direction);
  CDirection(double h, double r, double p);

  CDirection& operator= (const CDirection& direction); 
  CDirection& operator+= (const CDirection& direction); 
  CDirection operator+ (const CDirection& direction); 
  CDirection operator- () const; 
  CDirection operator* (double scale) const; 

  void normalize();

  double * getVector();
  double getValue(int ii) const ;
  void setValue(int ii,double value);
  double rotateHeading( double deltaHeading );
  double rotateRoll( double deltaRoll );
  double rotatePitch( double deltaPitch );
  double getHeading() const { return direction[0]; }
  double getRoll() const { return direction[1]; }
  double getPitch() const { return direction[2]; }

};

ostream& operator<<(ostream&s,const CDirection& d);

#endif // _DIRECTION_H