//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
// G4TwistedTrd
//
// Class description:
//
//  A G4TwistedTrd is a twisted trapezoid with the x and y dimensions 
//  varying along z 
// 
//
//   Member Data:
//
//     pDx1    Half-length along x at the surface positioned at -dz
//     pDx2    Half-length along x at the surface positioned at +dz
//     pDy1    Half-length along y at the surface positioned at -dz
//     pDy2    Half-length along y at the surface positioned at +dz
//     pDz     Half-length along z axis
//     pPhiTwist Twist angle

// Author: Oliver Link (Oliver.Link@cern.ch)
// --------------------------------------------------------------------
#ifndef G4TWISTEDTRD_HH
#define G4TWISTEDTRD_HH

#include "G4VTwistedFaceted.hh"

class G4TwistedTrd : public G4VTwistedFaceted
{
  public:  // with description

    G4TwistedTrd( const G4String& pName,
                        G4double  pDx1,
                        G4double  pDx2,
                        G4double  pDy1, 
                        G4double  pDy2,
                        G4double  pDz,
                        G4double  pPhiTwist );

    virtual ~G4TwistedTrd();

    // accessors

    inline G4double GetX1HalfLength() const { return GetDx1() ; }
    inline G4double GetX2HalfLength() const { return GetDx3() ; }
    inline G4double GetY1HalfLength() const { return GetDy1() ; }
    inline G4double GetY2HalfLength() const { return GetDy2() ; }
    inline G4double GetZHalfLength()  const { return GetDz()  ; }
    inline G4double GetPhiTwist()     const { return GetTwistAngle() ; }

    G4GeometryType GetEntityType() const;

    G4VSolid* Clone() const;

    std::ostream&  StreamInfo(std::ostream& os) const;

  public:  // without description

    G4TwistedTrd(__void__&);
      // Fake default constructor for usage restricted to direct object
      // persistency for clients requiring preallocation of memory for
      // persistifiable objects.

    G4TwistedTrd(const G4TwistedTrd& rhs);
    G4TwistedTrd& operator=(const G4TwistedTrd& rhs); 
      // Copy constructor and assignment operator.

} ;

#endif
