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#ifndef SNAKE_H 
#define SNAKE_H 


#include <CGAL/Filtered_kernel.h>
#include "region.h"

class Snake
{
 public:
  typedef Enriched_polyhedron<Enriched_kernel,Enriched_items> Polyhedron ;
  typedef Enriched_polyhedron<Enriched_kernel,Enriched_items>::Vertex_handle Vertex_handle;
  typedef Enriched_polyhedron<Enriched_kernel,Enriched_items>::Point Point;
  
 private:
          std::vector< Vertex_handle > Snake_VH; // 
  
  double* WeightsA ; 

  double* WeightsB ; 
  
  Region R;

  bool R_is_initialized;

  int dim;
  
  double (*A)[200]; 
  
  double Pas_Gamma;
  
public:
  
          // S n a k e   c o n s t r u c t i o n / d e s t r u c t i o n :
          
          Snake(); 
  /*
          The user input is utilized for initially approximating the features 
   detection process
  */
  
  Snake( std::vector< Vertex_handle > S , Polyhedron localRegion) ; 
  
  Snake( std::vector< std::vector< Vertex_handle > > S , Polyhedron localRegion) ; 

  ~Snake();
  
  // M e t h o d s
  void Affiche_snake() const;

  void draw_snake2D() const;  

  void draw_snake3D() const;
    
  void Maj_A();

  void Affiche_A(); 
  
  void Set_A(int i,int j, double f);
  
  double Get_A(int i,int j);

  Region* getRegion() { return &R ; }
  
  void Energy_minimization(int n_iterations);
  
  void Set_Pas_Gamma(double f);

  double Get_Pas_Gamma();

    int Get_dim();
  
  void Set_Snake_WeightsA( double* Vec, int taille); 

  void Set_Snake_WeightsB( double* Vec, int taille); 
  
  double* Get_Snake_WeightsA(); 
  
  double* Get_Snake_WeightsB(); 
};

#endif

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