NullGeometry.h

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#ifndef OPALX_NullGeometry_HH
#define OPALX_NullGeometry_HH
 
// ------------------------------------------------------------------------
// $RCSfile: NullGeometry.h,v $
// ------------------------------------------------------------------------
// $Revision: 1.1.1.1 $
// ------------------------------------------------------------------------
// Copyright: see Copyright.readme
// ------------------------------------------------------------------------
//
// Class: NullGeometry
//
// ------------------------------------------------------------------------
// Class category: BeamlineGeometry
// ------------------------------------------------------------------------
//
// $Date: 2000/03/27 09:32:34 $
// $Author: fci $
//
// ------------------------------------------------------------------------
 
#include "BeamlineGeometry/Geometry.h"
 
class Euclid3D;
 
// Class NullGeometry
// ------------------------------------------------------------------------
 
class NullGeometry : public BGeometryBase {
public:
    NullGeometry();
    NullGeometry(const NullGeometry&);
    virtual ~NullGeometry();
    const NullGeometry& operator=(const NullGeometry&);
 
    //  Always zero for this class.
    virtual double getArcLength() const;
 
    //  Always zero for this class.
    virtual double getElementLength() const;
 
    //  Always zero for this class.
    virtual double getOrigin() const;
 
    //  transform from [b]fromS[/b] to [b]toS[/b] is always an identity
    //  for this class.
    virtual Euclid3D getTransform(double fromS, double toS) const;
 
    //  Equivalent to getTransform(0.0, s).
    //  Return the transform of the local coordinate system from the
    //  origin and [b]s[/b].
    virtual Euclid3D getTransform(double s) const;
};
 
// inlined (trivial) member functions
inline NullGeometry::NullGeometry() {}
 
inline NullGeometry::NullGeometry(const NullGeometry& o) : BGeometryBase(o) {}
 
inline const NullGeometry& NullGeometry::operator=(const NullGeometry&) { return *this; }
 
#endif  // OPALX_NullGeometry_HH