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//  file:    kboxco2.h
//  update:  11/13/02

#ifndef _KBOXCO2_H
#define _KBOXCO2_H

#include <cassert>
#include <cstdlib>
#include <iostream>

#include "bigrational.h"

using namespace std;

class K_POINT2D;
class K_CURVE;

class K_BOXCO2
{
friend class K_SEGMENT;
friend class K_CURVE;
friend class K_PATCH;
friend class K_PARTITION;
  
  bigrational low[2];
  bigrational high[2];
  
  int low_open[2];
  int high_open[2];
  
  //  stream
  
  ostream& output(ostream&) const;
  
  //  comparison
  
  int overlap(const K_BOXCO2&) const;
  int contains(const K_BOXCO2&) const;
  
  //  other
  
  K_BOXCO2 merge(const K_BOXCO2&) const;
  
public:
  
  //  constructors, assignment and destructor
  
  K_BOXCO2();
  K_BOXCO2(const bigrational&, const bigrational&,
           const bigrational&, const bigrational&,
           const int, const int, const int, const int);
  K_BOXCO2(const bigrational* const, const bigrational* const,
           const int* const, const int* const);
  
  K_BOXCO2(const K_BOXCO2&);
  K_BOXCO2& operator =(const K_BOXCO2&);
  
  ~K_BOXCO2();
  
  //  stream
  
  friend ostream& operator <<(ostream&, const K_BOXCO2&);
  
  //  primitive
  
  bigrational get_low_s() const;
  bigrational get_high_s() const;
  bigrational get_low_t() const;
  bigrational get_high_t() const;
  
  int is_low_s_open() const;
  int is_high_s_open() const;
  int is_low_t_open() const;
  int is_high_t_open() const;
  
  //  other
  
  friend int pt_inside_trim_curves(K_POINT2D&,
                                   K_CURVE** const, const unsigned long);
  friend int pt_in_on_out_trim_curves(K_POINT2D&,
                                      K_CURVE** const, const unsigned long);
};

#endif