#ifndef SILADDER_HPP
#define SILADDER_HPP
//
// $Id: SiLadder.hpp,v 1.12 2005/03/09 19:43:51 snyder Exp $
//
// File: SiLadder.hh
// Purpose: 
// Created: 21-OCT-1997   John Hobbs
//
// $Revision: 1.12 $
//
//

// Include files
#include <list>
#include <geometry_system/components/Plane.hpp>
#include <geometry_system/components/CartesianMatrix.hpp>

// Global definitions

/// Define a silicon ladder.
class SiLadder: public dgs::Plane {
public:

  /// Default constructor (a ladder of zero dimensions)
  SiLadder(): dgs::Plane(0.0,0.0),_awidth(0.),_alength(0.),_cawidth(0.),_calength(0.) {}

  /// Instantiate a ladder with definite dimensions.
  SiLadder(float dxhalf, float dyhalf,
  float alength,float  awidth,float calength,float cawidth): 
                     dgs::Plane(dxhalf,dyhalf),
                     _awidth(awidth),_alength(alength),
                     _cawidth(cawidth),_calength(calength)
                      {}


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

#ifdef OLDMAN
  /**
    Transform a point in the local ladder coordinate system
     to a global point in the D0 coordinate system.
   */
  virtual SpacePoint local_to_global(const dgs::CartesianCoordinate& lpt) const;

  /**
    Transform a matrix in the local ladder coordinate system
     to a matrix in the global D0 coordinate system.
   */
  virtual MatrixD local_to_global(const dgs::CartesianMatrix& theMatrix) const;

  /**
    Transform a point in the D0 coordinate system
     to a point in the local ladder coordinate system.
   */  
  virtual dgs::CartesianCoordinate global_to_local(const SpacePoint& gpt) const;
#endif

  /// Text dump a ladder.
  friend std::ostream& operator<< (std::ostream& os, const SiLadder& me);
  friend bool operator<(const SiLadder& lhs, const SiLadder &rhs);

  /// Compare the size and position of the ladders
  friend bool operator==(const SiLadder& lhs, const SiLadder &rhs);
  /// and do it again
  friend bool operator!=(const SiLadder& lhs, const SiLadder &rhs) {
    return !(lhs==rhs);
  }

  float get_alength() const;
  float get_awidth() const;
  float get_alcenter() const;
  float get_awcenter() const;

public:

  D0_OBJECT_SETUP(SiLadder);

protected:

 float _awidth;
 float _alength;
 float _cawidth;
 float _calength;
  
};

// Constructors/Destructors

// Accessors
#endif //SILADDER_HPP