#ifndef SIEND_HPP
#define SIEND_HPP
//
// $Id: SiEnd.hpp,v 1.6 2001/02/03 22:53:36 hobbs Exp $
//
// File: SiEnd.hpp
// Purpose: 
// Created: 15-DEC-1997   Emanuela Barberis
//
// $Revision: 1.6 $
//
//

// Include files
#include <list>
#include <vector>
#include <silicon_geometry/base/SiDisk.hpp>
#include <geometry_system/components/ReferencePoint.hpp>

// Constructors/Destructors

/**
  SMT end unit.
  Each end contains $nd$ disks.
 */
class SiEnd: public dgs::ReferencePoint {
public:

/// Default constructor (empty end).
  SiEnd() {}

/**
   Instantiate an end unit with $nd$ disks.
   The ideal positions are given in $disk \_pos$.
 */
  SiEnd(int ndis, std::vector<float> disk_zpos,
        const SiDisk* proto_disk); 

/**
    Instantiate an end unit with $nd$ disks.                      
    Construct an end with the disks
    specified in the vector ${\it const std::vector<SiDisk> \&disks}$.
*/
  SiEnd(int ndis, std::vector<float> disk_zpos,
        const std::vector<SiDisk> &disks); 

/** 
                 Return the address of the children.  
                 Used within dgs::GeometryElement and ReferencePoint to do 
                 positioning.
*/
  const std::list<dgs::GeometryElement*> get_children();

///  Return the number of disks.
  int get_disk_count() const;

/// Return a constant reference to the idisk-th idisk.
  const SiDisk* get_disk(int idisk)  const;

/// Return a modifiable reference to the idisk-th idisk.
  SiDisk* get_mutable_disk(int idisk);

/// Text dump an end unit.
  friend std::ostream& operator <<(std::ostream& os, const SiEnd& me);
  friend bool operator<(const SiEnd& lhs, const SiEnd &rhs);
  friend bool operator==(const SiEnd& lhs, const SiEnd &rhs);
  friend bool operator!=(const SiEnd& lhs, const SiEnd &rhs);

private:

///  Vector to hold the disks.
  std::vector<SiDisk> _disks;

public:

  D0_OBJECT_SETUP(SiEnd);

};

// Inlines
#include <silicon_geometry/base/SiEnd.icc>

#endif //SIEND_HPP