#ifndef MATERIALGEOMETRY_HH
#define MATERIALGEOMETRY_HH
//
// $Id: MaterialGeometry.hpp,v 1.6 2004/03/25 21:57:43 snyder Exp $
//
// File: MaterialGeometry.hh
// Purpose: To initialize all detector material geometries
// Created: 17-SEP-1998   Harry Melanson
//
// $Revision: 1.6 $
//
//

// Include files
#include <stdexcept>
#include <string>

namespace edm {
  class RCP;
}

/** The D0 Material Geometry.

    The D0 {\bf MaterialGeometry} class is used to initialize each of
    the individual sub-detector {\bf MaterialGeometry}'s.  It is used,
    for example, by the {\em geometry\_management} CVS package, within
    the D0 {\bf Framework} context.

*/
class MaterialGeometry {

public:

  ///  Default constructor
  MaterialGeometry();

  /** Build the sub-detector {\bf MaterialGeometry}'s.

      This method builds the individual sub-detector {\bf
      MaterialGeometry}'s.  The RCP passed to this method must contain
      RCP's for each individual sub-detector, which are then passed to
      the corresponding sub-detector methods.

      @param rcp Pointer to RCP containing default MaterialGeometry information

  */
  void build(edm::RCP* mainrcp);

private:

};


class XMGNotImplemented: public std::runtime_error {
public:

  XMGNotImplemented(const std::string& whose):
    // Static is dumb way to do initializaton forced by MS VC++ not recognizing
    // original, legal code.  
    std::runtime_error(_mystring+whose) {}

private:
  static std::string _mystring;

};
#endif //MATERIALGEOMETRY_HH