source: GTP/trunk/App/Demos/Vis/FriendlyCulling/VboFormatConverter/SimpleTri.h @ 3107

#ifndef __SIMPLETRI_H
#define __SIMPLETRI_H

#include <iostream>
#include "SimpleVec.h"


struct SimpleTri 
{
        SimpleTri() {};
        SimpleTri(const SimpleVec &a, const SimpleVec &b, const SimpleVec &c);

        void Init(const SimpleVec &a, const SimpleVec &b, const SimpleVec &c);

        SimpleVec GetNormal() const;

        SimpleVec GetWorldCenter() const;

        float GetSpatialAngle(const SimpleVec &point) const;

        float GetArea() const;
        
          
        friend std::ostream& operator<< (std::ostream &s, const SimpleTri &A);
        friend std::istream& operator>> (std::istream &s, SimpleTri &A);


        ///////////////////

        /// the triangle vertices
        SimpleVec mVertices[3];
};


// Overload << operator for C++-style output
inline std::ostream&
operator<< (std::ostream &s, const SimpleTri &A)
{
  return s << "(" << A.mVertices[0] << ", " << A.mVertices[1] << ", " << A.mVertices[2] << ")";
}

// Overload >> operator for C++-style input
inline std::istream&
operator>> (std::istream &s, SimpleTri &A)
{
  char a;
  // read "(x, y, z)"
  return s >> a >> A.mVertices[0] >> a >> A.mVertices[1] >> a >> A.mVertices[2] >> a;
}


#endif