ucar.unidata.geoloc.projection

Class RotatedPole

java.lang.Object

ucar.unidata.geoloc.projection.AbstractProjection

ucar.unidata.geoloc.projection.RotatedPole

All Implemented Interfaces:

Projection

@Immutable
public class RotatedPole
extends AbstractProjection

Rotated-pole longitude-latitude grid. This is probably the same as rotated lat lon, using matrix to do rotation. Follows CF convention with "north_pole lat/lon", whereas RotatedLatLon uses south pole.

Field Summary

Fields inherited from class ucar.unidata.geoloc.projection.AbstractProjection

atts, EARTH_RADIUS, INDEX_LAT, INDEX_LON, INDEX_X, INDEX_Y, isLatLon, name, PI, PI_OVER_2, PI_OVER_4, TOLERANCE

Constructor Summary

Constructors

Constructor and Description
RotatedPole() Default Constructor, needed for beans.
RotatedPole(double northPoleLat, double northPoleLon)

Method Summary

Modifier and Type	Method and Description
Projection	constructCopy() copy constructor - avoid clone !!
boolean	crossSeam(ProjectionPoint pt1, ProjectionPoint pt2) Does the line between these two points cross the projection "seam", which is a discontinuity in the function latlon <-> projection plane
boolean	equals(Object o)
ProjectionPoint	getNorthPole()
int	hashCode()
ProjectionPoint	latLonToProj(LatLonPoint latlon) Transform a "real" longitude and latitude to the rotated longitude (X) and rotated latitude (Y).
String	paramsToString() String representation of the projection parameters.
LatLonPoint	projToLatLon(ProjectionPoint ppt) Transform a rotated longitude (X) and rotated latitude (Y) to a "real" longitude-latitude pair.

Methods inherited from class ucar.unidata.geoloc.projection.AbstractProjection

addParameter, addParameter, addParameter, addParameter, findProjectionParameter, getClassName, getHeader, getMinOrMaxLon, getName, getProjectionAttributes, getProjectionParameters, getProjectionTypeLabel, isLatLon, latLonToProjBB, projToLatLonBB, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface ucar.unidata.geoloc.Projection

latLonToProj, projToLatLon

Constructor Detail

RotatedPole

public RotatedPole()

Default Constructor, needed for beans.

RotatedPole

public RotatedPole(double northPoleLat,
                   double northPoleLon)

Method Detail

getNorthPole

public ProjectionPoint getNorthPole()

constructCopy

public Projection constructCopy()

Description copied from class: AbstractProjection

copy constructor - avoid clone !!

Specified by:

constructCopy in class AbstractProjection

Returns:

a copy of this Projection.

paramsToString

public String paramsToString()

Description copied from interface: Projection

String representation of the projection parameters.

Specified by:

paramsToString in interface Projection

Specified by:

paramsToString in class AbstractProjection

latLonToProj

public ProjectionPoint latLonToProj(LatLonPoint latlon)

Transform a "real" longitude and latitude to the rotated longitude (X) and rotated latitude (Y).

projToLatLon

public LatLonPoint projToLatLon(ProjectionPoint ppt)

Transform a rotated longitude (X) and rotated latitude (Y) to a "real" longitude-latitude pair.

crossSeam

public boolean crossSeam(ProjectionPoint pt1,
                         ProjectionPoint pt2)

Description copied from interface: Projection

Does the line between these two points cross the projection "seam", which is a discontinuity in the function latlon <-> projection plane

Parameters:

pt1 - the line goes between these two points

pt2 - the line goes between these two points

Returns:

false if there is no seam, or the line does not cross it.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object