Triangle.h

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/*
**    Mesh Converter
**    Copyright (C) 2008 Damien Rohmer
**
**    This program is free software: you can redistribute it and/or modify
**    it under the terms of the GNU General Public License as published by
**    the Free Software Foundation, either version 3 of the License, or
**    (at your option) any later version.
**
**   This program is distributed in the hope that it will be useful,
**    but WITHOUT ANY WARRANTY; without even the implied warranty of
**    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
**    GNU General Public License for more details.
**
**    You should have received a copy of the GNU General Public License
**    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/



/*
** Triangle.h
** 
** Made by damien
** Login   <damien@ortie>
** 
** Started on  Sun Jul  6 12:35:08 2008 damien
** Last update Sun Jul  6 12:35:08 2008 damien
*/



#ifndef         TRIANGLE_H_
# define        TRIANGLE_H_

#include <V_3D.h>
#include <Segment.h>

#include <vector>
using namespace std;



class Triangle
{
public:

  //*********************************************//
  // CONSTRUCTORS
  //*********************************************//
  
  Triangle();
  Triangle(const V_3D& x0,const V_3D& x1,const V_3D& x2);
  Triangle(const Triangle& t);
  ~Triangle();

  //*********************************************//
  // Manipulation
  //*********************************************//
  
  int destroy();

  V_3D normal() const;

  double area() const;
  

  Segment get_segment(int k_edge) const;


  //*********************************************//
  // Informations
  //*********************************************//


  int barycentric_coordinates(const V_3D& x,double *alpha,double *beta,double *gamma) const;

  int is_vertex_inside(const V_3D _x) const;



  V_3D closest_point(const V_3D& x,int *type) const;


  std::vector <V_3D> plane_intersection(const V_3D& n,const V_3D& x0,int *type) const;

  std::vector <V_3D> plane_intersection(const V_3D& n,const V_3D& x0,int *type,int *type_edge_0,int *type_edge_1,int *type_edge_2) const;

  //*********************************************//
  // Operators
  //*********************************************//

  V_3D  operator()(int index) const;
  V_3D& operator()(int index);
  V_3D  operator[](int index) const;
  V_3D  operator[](int index);

  Triangle& operator=(const Triangle& t);


private:
  
  V_3D x[3];


};

#endif      /* !TRIANGLE_H_ */