Face.h

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#ifndef FACE_CM
#define FACE_CM
#include <iostream>
#include "Edge.h"
#include "Vertex.h"
#include "Vector3.h"

class Face
{
public:

   // pointers for mesh structure
   Edge * edge;

   // distinct id
   int ID;
   int patchID;

   // to check various iterations
   bool check;

   double r;

   Face(void): edge(NULL), ID(-1) 
   { 
      patchID = 0;
   }

   class EdgeAroundIterator {
   private:
      Edge * endI;
      Edge * run;
      Edge * _e;
   public:

      EdgeAroundIterator(Edge * e) {
          endI = NULL;
          run = e;
          _e = e;
      }

      void reset() {
          endI = NULL;
          run = _e;
      }

      EdgeAroundIterator& operator++( void ){
          if (!endI) endI = run;
          run = run->next;
          return *this;
      }
      EdgeAroundIterator operator++( int ){
          EdgeAroundIterator r = *this; ++*this; return r;
      }

      Edge * edge( void ) const { return run; }
      Edge * & edge( void )     { return run; }

      Vertex * vertex( void ) const { return run->vertex; }
      Vertex * & vertex( void )     { return run->vertex; }

      Face * face( void ) const { return run->pair->face; }
      Face * & face( void )     { return run->pair->face; }

      bool end(void) { return endI == run;}
   };

   EdgeAroundIterator iterator() {return EdgeAroundIterator(edge);}
   EdgeAroundIterator iterator(Edge * myE) {return EdgeAroundIterator(myE);}

};
#endif

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