IlvHorizontalShiftDatum Class Reference

This class describes a horizontal datum. More...

#include <ilviews/maps/projection/hshiftdatum.h>

Inheritance diagram for IlvHorizontalShiftDatum:

Public Member Functions
	IlvHorizontalShiftDatum (const char *name, const char *regionOfUse, const IlvEllipsoid &ellipsoid, IlDouble dx, IlDouble dy, IlDouble dz)
	Initializes an instance of the IlvHorizontalShiftDatum class. More...
	IlvHorizontalShiftDatum (const IlvHorizontalShiftDatum &source)
	Initializes a new instance of the IlvHorizontalShiftDatum by copying specified horizontal shift datum. More...
virtual IlvHorizontalDatum *	copy () const
	Returns a new copy of this IlvHorizontalShiftDatum.
IlBoolean	equivalent (const IlvHorizontalDatum *datum) const
	Returns IlTrue if the specified datum is equivalent to this. More...
IlDouble	getDX () const
	Returns the shift on the X axis, in meters.
IlDouble	getDY () const
	Returns the shift on the Y axis, in meters.
IlDouble	getDZ () const
	Returns the shift on the Z axis, in meters.
const char *	getName () const
	Returns the name of the ellipsoid.
const char *	getRegionOfUse () const
	Returns the name of the region where the datum is used in.
Public Member Functions inherited from IlvHorizontalDatum
const IlvEllipsoid *	getEllipsoid () const
	Returns the ellipsoid for this datum. More...
IlvMapsError	getInitStatus () const
	Returns the initialization status of this datum. More...
void	save (IlvOutputFile &file) const
	Saves an instance of a subclass of IlvHorizontalDatum to the specified output file. More...
virtual void	write (IlvOutputFile &file) const
	Write the object to an IlvOutputFile. More...

Static Public Member Functions
static const IlvHorizontalShiftDatum *	WGS84 ()
	The WGS84 datum.
Static Public Member Functions inherited from IlvHorizontalDatum
static const IlvHorizontalDatumConverterFactory *	GetConverterFactory ()
	Returns a factory than can create converters to convert coordinates from one datum to another. More...
static IlvHorizontalDatum *	Load (IlvInputFile &inputFile)
	This static method loads a datum from the specified file. More...

Additional Inherited Members
Protected Member Functions inherited from IlvHorizontalDatum
	IlvHorizontalDatum (const IlvEllipsoid &ellipsoid)
	Initializes a new instance of IlvHorizontalDatum. More...
	IlvHorizontalDatum (const IlvHorizontalDatum &source)
	Initializes a new instance of IlvHorizontalDatum, copying the specified datum. More...
	IlvHorizontalDatum (IlvInputFile &file)
	Reads an IlvHorizontalDatum from specified input file. More...
void	setInitStatus (IlvMapsError status)
	Sets the initialization status of this datum. More...

Detailed Description

This class describes a horizontal datum.

Library: ilvmaps

A horizontal datum is defined by a translation of the ellipsoid. Usually, the translation is performed so that the translated ellipsoid is tangent to the geoid surface in the region of interest. An IlvHorizontalShiftDatum object is based on the shift parameters relative to the WGS84 datum used by the Molodensky formula.

See Also

IlvMolodenskyConverter.

Constructor & Destructor Documentation

IlvHorizontalShiftDatum::IlvHorizontalShiftDatum	(	const char *	name,
		const char *	regionOfUse,
		const IlvEllipsoid &	ellipsoid,
		IlDouble	dx,
		IlDouble	dy,
		IlDouble	dz
	)

Initializes an instance of the IlvHorizontalShiftDatum class.

Parameters

name	Name of the datum. This string is duplicated by the constructor.
regionOfUse	String describing the region this datum is used. This string is duplicated by the constructor.
ellipsoid	The ellipsoid for this datum.
dx	Shift on the x axis, in meters.
dy	Shift on the y axis, in meters.
dz	Shift on the z axis, in meters.

IlvHorizontalShiftDatum::IlvHorizontalShiftDatum

(

const IlvHorizontalShiftDatum &

source

)

Initializes a new instance of the IlvHorizontalShiftDatum by copying specified horizontal shift datum.

Parameters

source

The source datum to be copied.

Member Function Documentation

IlBoolean IlvHorizontalShiftDatum::equivalent ( const IlvHorizontalDatum *  datum ) const

virtual

Returns IlTrue if the specified datum is equivalent to this.

Parameters

datum

The datum to test against.

Returns

IlTrue if the specified datum describes the same coordinate system as this datum.

Implements IlvHorizontalDatum.