Triangle.h

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#ifndef _TRIANGLE_H_
#define _TRIANGLE_H_
 
#include "./include.h"
#include "AdjacentTriangle.h"
 
namespace bamg {
 
   class Mesh;
   class BamgVertex;
   class Triangle;
 
   class Triangle {
 
      friend class AdjacentTriangle;
 
      private:
         BamgVertex *vertices[3];        // 3 vertices if t is triangle, t[i] allowed by access function, (*t)[i] if pointer
         Triangle   *adj[3];             // 3 pointers toward the adjacent triangles
         short       AdjEdgeIndex[3];   // edge id in the adjacent triangles. The edge number 1 is the edge number AdjEdgeIndex[1] in the Adjacent triangle 1
 
      public: 
         long long det; //Integer determinant (twice its area)
         union { 
            Triangle *link;
            long      color;
         };
 
         //Constructors/Destructors
         Triangle();
         Triangle(Mesh *Th,long i,long j,long k);
         Triangle(BamgVertex *v0,BamgVertex *v1,BamgVertex *v2);
 
         //Operators
         const BamgVertex & operator[](int i) const {return *vertices[i];};
         BamgVertex & operator[](int i)  {return *vertices[i];};
         const BamgVertex * operator()(int i) const {return vertices[i];};
         BamgVertex * & operator()(int i)  {return vertices[i];};
 
         //Methods
         void              Echo();
         double            Length() const;
         int               swap(short a1,int=0);
         long              Optim(short a,int =0);
         int               Locked(int a)const;
         int               Hidden(int a)const;
         int               GetAllflag(int a);
         short             NuEdgeTriangleAdj(int i) const;
         AdjacentTriangle  Adj(int i) const;
         Triangle         *TriangleAdj(int i) const;
         void              Renumbering(Triangle   *tb,Triangle *te, long *renu);
         void              Renumbering(BamgVertex *vb,BamgVertex *ve, long *renu);
         void              SetAdjAdj(short a);
         void              SetAdj2(short a,Triangle *t,short aat);
         void              SetSingleVertexToTriangleConnectivity();
         void              SetHidden(int a);
         void              SetLocked(int a);
         void              SetMarkUnSwap(int a);
         void              SetUnMarkUnSwap(int a);
 
         //Inline methods
         void  Set(const Triangle &,const Mesh &,Mesh &);
         int   In(BamgVertex *v) const { return vertices[0]==v || vertices[1]==v || vertices[2]==v ;}
         BamgVertex* GetVertex(int i){return vertices[i];}; // FIXME: this is used to avoid BamgVertex * operator()
 
   };
 
}
#endif