ucar.unidata.geoloc.projection.proj4

Class TransverseMercatorProjection

java.lang.Object

ucar.unidata.geoloc.projection.AbstractProjection

ucar.unidata.geoloc.projection.proj4.TransverseMercatorProjection

All Implemented Interfaces:

Projection

@Immutable
public class TransverseMercatorProjection
extends AbstractProjection

Transverse Mercator Projection algorithm is taken from the USGS PROJ package.

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
TransverseMercatorProjection()
TransverseMercatorProjection(Earth ellipsoid, double lon_0_deg, double lat_0_deg, double k, double falseEast, double falseNorth) Set up a projection suitable for State Plane Coordinates.
TransverseMercatorProjection(int zone)

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)
String	getProjectionTypeLabel() Get the label to be used in the gui for this type of projection.
static int	getRowFromNearestParallel(double latitude)
static int	getZoneFromNearestMeridian(double longitude)
int	hashCode()
boolean	hasInverse()
boolean	isRectilinear()
ProjectionPoint	latLonToProj(LatLonPoint latLon) Convert a LatLonPoint to projection coordinates.
String	paramsToString() String representation of the projection parameters.
LatLonPoint	projToLatLon(ProjectionPoint world) Convert projection coordinates to a LatLonPoint.

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

addParameter, addParameter, addParameter, addParameter, findProjectionParameter, getClassName, getHeader, getMinOrMaxLon, getName, getProjectionAttributes, getProjectionParameters, 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

TransverseMercatorProjection

public TransverseMercatorProjection()

TransverseMercatorProjection

public TransverseMercatorProjection(int zone)

TransverseMercatorProjection

public TransverseMercatorProjection(Earth ellipsoid,
                                    double lon_0_deg,
                                    double lat_0_deg,
                                    double k,
                                    double falseEast,
                                    double falseNorth)

Set up a projection suitable for State Plane Coordinates. Best used with earth ellipsoid and false-easting/northing in km

Method Detail

getRowFromNearestParallel

public static int getRowFromNearestParallel(double latitude)

getZoneFromNearestMeridian

public static int getZoneFromNearestMeridian(double longitude)

isRectilinear

public boolean isRectilinear()

hasInverse

public boolean hasInverse()

getProjectionTypeLabel

public String getProjectionTypeLabel()

Description copied from class: AbstractProjection

Get the label to be used in the gui for this type of projection. This defaults to call getClassName

Overrides:

getProjectionTypeLabel in class AbstractProjection

Returns:

Type label

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)

Description copied from interface: Projection

Convert a LatLonPoint to projection coordinates.

projToLatLon

public LatLonPoint projToLatLon(ProjectionPoint world)

Description copied from interface: Projection

Convert projection coordinates to a LatLonPoint.

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