LELLattCoordBase.h
Classes
- LELLattCoordBase -- The base letter class for lattice coordinates in LEL. (full description)
Interface
- Public Members
- LELLattCoordBase()
- virtual ~LELLattCoordBase()
- virtual Bool hasCoordinates() const = 0
- virtual String classname() const = 0
- virtual uInt getSpectralInfo (Vector<Double>& worldCoordinates, const IPosition& shape) const = 0
- virtual Int compare (const LELLattCoordBase& other) const = 0
- virtual Int doCompare (const LELImageCoord& other) const = 0
Review Status
- Reviewed By:
- Bob Garwood
- Date Reviewed:
- 2000/01/25
- Programs:
- Tests:
Prerequisite
Synopsis
This abstract base class is the basic letter for the envelope class
LELCoordinates.
It does not do anything, but makes it possible that derived classes
(like LELLattCoord and
LELImageCoord)
implement their own behaviour.
Motivation
It must be possible to handle image coordinates in a lattice
expression.
Member Description
A virtual destructor is needed so that it will use the actual
destructor in the derived class.
Does the class have true coordinates?
The name of the class.
virtual uInt getSpectralInfo (Vector<Double>& worldCoordinates, const IPosition& shape) const = 0
Get the coordinates of the spectral axis for the given shape.
It returns the pixel axis number of the spectral coordinates.
-1 indicates that there is no pixel spectral axis.
An exception is thrown if there are no world spectral coordinates.
virtual Int compare (const LELLattCoordBase& other) const = 0
Check how the coordinates of this and that compare.
Check how the coordinates of this and that image compare.
This function is used by conform to make a
double virtual dispatch possible.