#ifndef TCYLINDRICALSHELL_HPP
#define TCYLINDRICALSHELL_HPP
//
// $Id: TCylindricalShell.hpp,v 1.4 2004/04/08 20:08:55 snyder Exp $
//
// File: TCylindricalShell.hpp
// Purpose: Represents a thin shelled cylinder
// Created: 26-APR-1999  John D. Hobbs  (copied from CylindricalShell)
//
// $Revision: 1.4 $
//
//

// Include files

#include <iostream>
#include <material/Material.hpp>

/**  A thin cylindrical shell.

     A {\bf TCylindricalShell} represents a thin shelled cylinder which
     has a given thickness (in cm) and is associated with a given {\bf
     Material}.  In addition, a {\bf TCylindricalShell} contains a
     reference to a {\bf TcylindricalSurface}, which contains maintains
     all position / rotation information for the cylinder.

  */

template <class T> class TCylindricalShell;
template <class T>
std::ostream& operator<< (std::ostream&, const TCylindricalShell<T>*);
template <class T>
std::ostream& operator<< (std::ostream&, const TCylindricalShell<T>&);

template<class T> class TCylindricalShell
{

  //------------------  Public Methods -------------------//
  
public:
  
  /**  Constructor.

       Builds a {\bf TCylindricalShell} given a {\bf Pointer}
       of the templated class, a {\bf Material} and a thickness.
       The object pointed to is owned by a MaterialGeometer, and
       must not be deleted by the TCylindricalShell destructor.

    */

  TCylindricalShell(T* surface,
		   const D0Material::Material& material,
		   const float thickness);

  ///  Returns point to {\bf Material}.
  const D0Material::Material* get_Material() const;

  /**  Returns the fraction of a radiation length.

       This method returns the perpendicular thickness of the material
       associated with this shell, in fractions of a radiation length.

  */

  ///  Returns positioning class (template class)
  T* get_Surface() const;

  float get_X0_frac() const;

  ///  Returns perpendicular thickness of material in cm.
  float get_Thickness() const;

  ///  Stream insertion operator.
  friend std::ostream& operator<< <> (std::ostream&, const TCylindricalShell*);
  
  ///  Stream insertion operator.
  friend std::ostream& operator<< <> (std::ostream&, const TCylindricalShell&);
    
  //------------------ Private Data Members -------------------//

private:


  ///  Handle/Pointer to positioning reference element
  T* d_surface;

  ///  The material type.
  const D0Material::Material d_material;

  ///  The material thickness, in cm.
  const float d_thickness;

};

#include <thinshells/TCylindricalShell.tcc>
#endif //TCYLINDRICALSHELL_HPP