---

CartesianNode2D.h

/****************************************************************************
 *                                                                          *
 *  Program: FDDlib                                                         *
 *  Version: 1.1                                                            *
 *                                                                          *
 *  Copyright (C) 2002 - 2004 by Eric Miller and Dana Brooks                *
 *  All rights reserved.                                                    *
 *                                                                          *
 *  This software is Version 1.1 of the fddlib tomography toolbox.          *
 *  It is not to be redistributed or used for any commercial purpose        *
 *  without the prior written consent of the authors and Northeastern       *
 *  University.                                                             *
 *                                                                          *
 *  This software is provided as is, and any express or implied warranties, *
 *  including but not limited to the implied warranty of merchantability    *
 *  and the implied warranty of fitness for a particular purpose, are dis-  *
 *  claimed.  In no event shall the authors or Northeastern University be   *
 *  liable for any direct, indirect, incidental, special, exemplary, or     *
 *  consequential damages (including but not limited to procurement of      * 
 *  substitute goods or services; loss of use, data, or profits; or busi-   *
 *  ness interruption) however caused and on any theory of liability,       *
 *  whether in contract, strict liability, or tort (including negligence or *
 *  otherwise) arising in any way from the use of this software, even if    *
 *  advised of the possibility of such damage.                              *
 *                                                                          *
 *  Portions of this code benefit from ideas from Kyle Guilbert, Greg       *
 *  Boverman, Derek Uluski, David Kaeli, and Jennifer Black                 *
 *                                                                          *
 ****************************************************************************/

#ifndef _CART_NODE2D_H_
#define _CART_NODE2D_H_

#include <vector>
#include <string>
#include <stdlib.h>
#include <math.h>
#include "Location2D.h"
#include "Property.h"
#include "grid_enums.h"
#include "Complex.h"

namespace FDDlib {

class CartesianNode2D {

protected:

  Location2D location_;

  std::vector<CartesianNode2D*> neighbors_;
  
  Property *property_;
  
  Location2D normalVector_;
  
  int linearIndex_;
  
  bool activeNeighbor(direction2D dir) const;
  
  static const int UNKNOWN_LIN_INDEX = -2;
  
  
public:

  static const int INACTIVE_LIN_INDEX = -1;

  CartesianNode2D(const Location2D& location) throw(std::string);
  
  Location2D getLocation() const;
  
  int getNumNeighbors() const;
  
  void setNeighbor(direction2D dir, CartesianNode2D* node) throw(std::string);
  
  CartesianNode2D* getNeighbor(direction2D dir) const throw(std::string);
  
  void setProperty(Property* prop);

  Property* getProperty() const;
  
  void setNormalVector(const Location2D& normalVector);
  
  Location2D getNormalVector() const;
  
  double distanceTo(const CartesianNode2D& node) const;

  bool compareLocation(const CartesianNode2D& node) const;
  
  bool isBorderNode() const;
  
  void setLinearIndex(int linearIndex) throw(std::string);
  
  int getLinearIndex() const throw(std::string);
  
};

}

#endif

---