Package ucar.unidata.geoloc.projection.proj4

Class TransverseMercatorProjection

java.lang.Object

ucar.unidata.geoloc.ProjectionImpl

ucar.unidata.geoloc.projection.proj4.TransverseMercatorProjection

All Implemented Interfaces:

Serializable, Projection

public class TransverseMercatorProjection
extends ProjectionImpl

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

See Also:

Serialized Form

Field Summary

Fields inherited from class ucar.unidata.geoloc.ProjectionImpl

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

Constructor Summary

Constructors

Constructor	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.

Method Summary

Modifier and Type	Method	Description
ProjectionImpl	constructCopy()	copy constructor - avoid clone !!
boolean	crossSeam(ProjectionPoint pt1, ProjectionPoint pt2)	Does the line between these two points cross the projection "seam".
boolean	equals(Object o)	Returns true if this represents the same Projection as proj.
String	getProjectionTypeLabel()	Get the label to be used in the gui for this type of projection.
int	getRowFromNearestParallel(double latitude)
int	getZoneFromNearestMeridian(double longitude)
int	hashCode()
boolean	hasInverse()
void	initialize()
boolean	isRectilinear()
ProjectionPoint	latLonToProj(LatLonPoint latLon, ProjectionPointImpl destPoint)	Convert a LatLonPoint to projection coordinates
String	paramsToString()	Get a string representation of the projection parameters
ProjectionPoint	project(double lplam, double lpphi, ProjectionPointImpl xy)
ProjectionPoint	projectInverse(double x, double y, ProjectionPointImpl out)
LatLonPoint	projToLatLon(ProjectionPoint world, LatLonPointImpl result)	Convert projection coordinates to a LatLonPoint Note: a new object is not created on each call for the return value.
void	setUTMZone(int zone)

Methods inherited from class ucar.unidata.geoloc.ProjectionImpl

addParameter, addParameter, addParameter, findProjectionParameter, getClassName, getDefaultMapArea, getDefaultMapAreaLL, getHeader, getName, getProjectionParameters, isLatLon, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProjBB, projToLatLon, projToLatLon, projToLatLon, projToLatLon, projToLatLon, projToLatLonBB, projToLatLonBBold, setDefaultMapArea, setName, 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(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

isRectilinear

public boolean isRectilinear()

initialize

public void initialize()

getRowFromNearestParallel

public int getRowFromNearestParallel(double latitude)

getZoneFromNearestMeridian

public int getZoneFromNearestMeridian(double longitude)

setUTMZone

public void setUTMZone(int zone)

project

public ProjectionPoint project(double lplam,
                               double lpphi,
                               ProjectionPointImpl xy)

projectInverse

public ProjectionPoint projectInverse(double x,
                                      double y,
                                      ProjectionPointImpl out)

hasInverse

public boolean hasInverse()

getProjectionTypeLabel

public String getProjectionTypeLabel()

Description copied from class: ProjectionImpl

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

Overrides:

getProjectionTypeLabel in class ProjectionImpl

Returns:

Type label

constructCopy

public ProjectionImpl constructCopy()

Description copied from class: ProjectionImpl

copy constructor - avoid clone !!

Specified by:

constructCopy in class ProjectionImpl

Returns:

a copy of this Projection. TODO return Projection in ver6

paramsToString

public String paramsToString()

Description copied from class: ProjectionImpl

Get a string representation of the projection parameters

Specified by:

paramsToString in interface Projection

Specified by:

paramsToString in class ProjectionImpl

Returns:

string representation of the projection parameters

latLonToProj

public ProjectionPoint latLonToProj(LatLonPoint latLon,
                                    ProjectionPointImpl destPoint)

Description copied from class: ProjectionImpl

Convert a LatLonPoint to projection coordinates

Specified by:

latLonToProj in interface Projection

Specified by:

latLonToProj in class ProjectionImpl

Parameters:

latLon - convert from these lat, lon coordinates

destPoint - the object to write to

Returns:

the given destPoint

projToLatLon

public LatLonPoint projToLatLon(ProjectionPoint world,
                                LatLonPointImpl result)

Description copied from class: ProjectionImpl

Convert projection coordinates to a LatLonPoint Note: a new object is not created on each call for the return value.

Specified by:

projToLatLon in interface Projection

Specified by:

projToLatLon in class ProjectionImpl

Parameters:

world - convert from these projection coordinates

result - the object to write to

Returns:

LatLonPoint convert to these lat/lon coordinates

crossSeam

public boolean crossSeam(ProjectionPoint pt1,
                         ProjectionPoint pt2)

Description copied from class: ProjectionImpl

Does the line between these two points cross the projection "seam".

Specified by:

crossSeam in interface Projection

Specified by:

crossSeam in class ProjectionImpl

Parameters:

pt1 - the line goes between these two points

pt2 - the line goes between these two points

Returns:

false if there is no seam

equals

public boolean equals(Object o)

Description copied from class: ProjectionImpl

Returns true if this represents the same Projection as proj.

Specified by:

equals in interface Projection

Specified by:

equals in class ProjectionImpl

Parameters:

o - projection in question

Returns:

true if this represents the same Projection as proj.

hashCode

public int hashCode()

Overrides:

hashCode in class Object