GeoHalfLine.h

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#ifndef BASICTOOL_GEOHALFLINE_H
#define BASICTOOL_GEOHALFLINE_H

#include "GeoVector.h"
namespace geoalgo {
  class HalfLine {
    
  public:
    
    HalfLine();

    virtual ~HalfLine(){};

    HalfLine(const double x,    const double y,    const double z,
             const double dirx, const double diry, const double dirz);

    HalfLine(const Point_t& start, const Vector_t& dir);
    
    const Point_t&  Start () const; 
    const Vector_t& Dir   () const; 
    
    void Start(const double x, const double y, const double z); 
    void Dir  (const double x, const double y, const double z); 

    void Start(const TVector3& pt ); 
    void Dir  (const TVector3& dir); 

  protected:

    void Normalize(); 
    Point_t  _start;  
    Vector_t _dir;    

  public:

    //
    // Template
    // 

    template <class T, class U> HalfLine(const T& start, const U& dir)
      : HalfLine(Point_t(start), Vector_t(dir))
    {}

    template<class T>
    void Start(const T& pos)
    { 
      _start = Point_t(pos); 
      if(_start.size()!=3) throw GeoAlgoException("<<Start>> Only 3 dimensional start point allowed!"); 
    }
    
    template<class T>
    void Dir(const T& dir)
    { 
      _dir = Vector_t(dir);
      if(_dir.size()!=3) throw GeoAlgoException("<<Start>> Only 3 dimensional start point allowed!"); 
      Normalize();
    }

  };
  
  typedef HalfLine HalfLine_t;
}
#endif
 // end of doxygen group