Representation for a marker element.
virtual ElementBase * clone() const
Return clone.
virtual NullGeometry & getGeometry()
Get geometry.
NullGeometry geometry
The marker geometry.
virtual double getArcLength() const
Get arc length.
NullField field
The zero magnetic field.
virtual NullField & getField()
Get field.
virtual double getElementLength() const
Get design length.
Geometry representing an identity transform.
A zero electromagnetic field.