ilog.views.maps.projection
Class IlvHorizontalShiftDatum

java.lang.Object
  ilog.views.maps.projection.IlvHorizontalDatum
      ilog.views.maps.projection.IlvHorizontalShiftDatum

All Implemented Interfaces:

IlvPersistentObject, Serializable

public class IlvHorizontalShiftDatum
extends IlvHorizontalDatum

This class describes a horizontal datum 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. system. Parameters for various datum can be found on this page .

Since:

JViews 3.0

See Also:

IlvMolodenskyConverter, Serialized Form

Field Summary

static IlvHorizontalShiftDatum	SPHERE_WGS84 A convenient datum with a 6370997 m radius sphere as ellipsoid, and no shifts.
static IlvHorizontalShiftDatum	WGS84 The WGS84 datum.

Constructor Summary

IlvHorizontalShiftDatum(IlvInputStream stream)
Reads the object from an IlvInputStream.

IlvHorizontalShiftDatum(String name, String regionOfUse, IlvEllipsoid ellipsoid, double dx, double dy, double dz)
Initializes an instance of the IlvHorizontalDatum class.

Method Summary

boolean	equals(Object object) Returns true if the specified datum is equal to this datum.
boolean	equivalent(IlvHorizontalDatum d) Returns true if the datum passed as the argument is equivalent to the object.
double	getDX() Returns the shift on the x-axis, in meters.
double	getDY() Returns the shift on the y-axis, in meters.
double	getDZ() Returns the shift on the z-axis, in meters.
String	getRegionOfUse() Returns the region where the datum is used.
void	write(IlvOutputStream stream) Writes the object into an IlvOutputStream.

Methods inherited from class ilog.views.maps.projection.IlvHorizontalDatum

GetConverterFactory, getEllipsoid, getName, SetConverterFactory, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

WGS84

public static final IlvHorizontalShiftDatum WGS84

The WGS84 datum.

SPHERE_WGS84

public static final IlvHorizontalShiftDatum SPHERE_WGS84

A convenient datum with a 6370997 m radius sphere as ellipsoid, and no shifts.

Since:

JViews 5.0

Constructor Detail

IlvHorizontalShiftDatum

public IlvHorizontalShiftDatum(String name,
                               String regionOfUse,
                               IlvEllipsoid ellipsoid,
                               double dx,
                               double dy,
                               double dz)

Initializes an instance of the IlvHorizontalDatum class.

Parameters:

name - Name of the datum.

regionOfUse - String describing where the datum is used.

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

public IlvHorizontalShiftDatum(IlvInputStream stream)
                        throws IlvReadFileException

Reads the object from an IlvInputStream.

Parameters:

stream - The input stream.

Throws:

IlvReadFileException - If the format is not correct.

Method Detail

write

public void write(IlvOutputStream stream)
           throws IOException

Writes the object into an IlvOutputStream.

Specified by:

write in interface IlvPersistentObject

Overrides:

write in class IlvHorizontalDatum

Parameters:

stream - the output stream

Throws:

IOException - thrown when an exception occurs during the write operation for this object.

getRegionOfUse

public final String getRegionOfUse()

Returns the region where the datum is used.

getDX

public final double getDX()

Returns the shift on the x-axis, in meters.

getDY

public final double getDY()

Returns the shift on the y-axis, in meters.

getDZ

public final double getDZ()

Returns the shift on the z-axis, in meters.

equals

public boolean equals(Object object)

Returns true if the specified datum is equal to this datum.

Overrides:

equals in class IlvHorizontalDatum

Parameters:

object - The object to compare.

Since:

JViews 5.0

See Also:

equivalent(ilog.views.maps.projection.IlvHorizontalDatum)

equivalent

public boolean equivalent(IlvHorizontalDatum d)

Returns true if the datum passed as the argument is equivalent to the object.

Specified by:

equivalent in class IlvHorizontalDatum