LineSaggingDescriptor.h

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/*
  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
*/
 
// DistortionDescriptor.h, (c) ATLAS Detector software
 
#ifndef TRKDISTORTEDSURFACES_LINESAGGINGDESCRIPTOR_H
#define TRKDISTORTEDSURFACES_LINESAGGINGDESCRIPTOR_H
 
//STL
#include <iosfwd>
//#include <iomanip>
 
//GaudiKernel
#include "GaudiKernel/MsgStream.h"
// Trk
#include "TrkDistortedSurfaces/DistortionDescriptor.h"
// Geo & Maths
#include "GeoPrimitives/GeoPrimitives.h"
 
namespace Trk {
          
  class LineSaggingDescriptor final : public DistortionDescriptor {
 
    public:
 
      LineSaggingDescriptor():m_wireLength{},m_wireTension{},m_linearDensity{}{
        //nop
      }
 
      LineSaggingDescriptor(double wireLength, 
                            double wireTension,
                            double linearDensity);
 
      LineSaggingDescriptor(const LineSaggingDescriptor& lsd);
 
       ~LineSaggingDescriptor() = default;
 
      virtual LineSaggingDescriptor* clone() const override final;
 
      LineSaggingDescriptor& operator=(const LineSaggingDescriptor& lsd);
 
      Amg::Transform3D* correctedSurfaceTransform(const Amg::Vector2D& locp, 
                                                  const Amg::Vector3D& lineCenter,
                                                  const Amg::Vector3D& lineDirection,
                                                  double cosFi=0.) const;
 
      MsgStream& dump(MsgStream& sl) const override final;
 
      std::ostream& dump(std::ostream& sl) const override final;
 
    protected:
     double                  m_wireLength;
     double                  m_wireTension;
     double                  m_linearDensity;
 
     static const double           s_elecStatFactor;
     alignas(16)  static const Amg::Vector3D    s_gravityDirection;
     alignas(16) static const Amg::Vector3D    s_referenceDirection;
 
 
           
  };
    
  // clone method
  inline LineSaggingDescriptor* LineSaggingDescriptor::clone() const
  { return new LineSaggingDescriptor(*this); }
                          
} // end of namespace
 
#endif