ucar.unidata.geoloc.projection.proj4

Class PolyconicProjection

java.lang.Object

ucar.unidata.geoloc.ProjectionImpl

ucar.unidata.geoloc.projection.proj4.PolyconicProjection

All Implemented Interfaces:

Serializable, Projection

public class PolyconicProjection
extends ProjectionImpl

Polyconic Projection. This file was semi-automatically converted from the public-domain USGS PROJ source. Bernhard Jenny, 19 September 2010: fixed spherical inverse.

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 and Description
PolyconicProjection()
PolyconicProjection(double lat0, double lon0)
PolyconicProjection(double lat0, double lon0, double falseEasting, double falseNorthing, Earth ellipsoid)
PolyconicProjection(double lat0, double lon0, Earth ellipsoid)

Method Summary

Modifier and Type	Method and Description
ProjectionImpl	constructCopy() copy constructor - avoid clone !!
boolean	crossSeam(ProjectionPoint pt1, ProjectionPoint pt2) This returns true when the line between pt1 and pt2 crosses the seam.
boolean	equals(Object o) Returns true if this represents the same Projection as proj.
Earth	getEarth()
double	getFalseEasting() Get the false easting, in km.
double	getFalseNorthing() Get the false northing, in km.
double	getOriginLatitude() Get the origin longitude.
double	getOriginLongitude() Get the origin longitude.
String	getProjectionTypeLabel() Get the label to be used in the gui for this type of projection
int	hashCode()
ProjectionPoint	latLonToProj(LatLonPoint latlon, ProjectionPointImpl result) Convert a LatLonPoint to projection coordinates
String	paramsToString() Create a String of the parameters.
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	setFalseEasting(double falseEasting) Set the false_easting, in km.
void	setFalseNorthing(double falseNorthing) Set the false northing, in km.
void	setOriginLatitude(double lat) Set the origin latitude.
void	setOriginLongitude(double lon) Set the origin longitude.

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, latLonToProj, latLonToProjBB, projToLatLon, 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

Constructor Detail

PolyconicProjection

public PolyconicProjection()

PolyconicProjection

public PolyconicProjection(double lat0,
                           double lon0)

PolyconicProjection

public PolyconicProjection(double lat0,
                           double lon0,
                           Earth ellipsoid)

PolyconicProjection

public PolyconicProjection(double lat0,
                           double lon0,
                           double falseEasting,
                           double falseNorthing,
                           Earth ellipsoid)

Method Detail

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

getEarth

public Earth getEarth()

setOriginLatitude

public void setOriginLatitude(double lat)

Set the origin latitude.

Parameters:

lat - the origin latitude.

getOriginLatitude

public double getOriginLatitude()

Get the origin longitude.

Returns:

the origin longitude in degrees

setOriginLongitude

public void setOriginLongitude(double lon)

Set the origin longitude.

Parameters:

lon - the origin longitude.

getOriginLongitude

public double getOriginLongitude()

Get the origin longitude.

Returns:

the origin longitude in degrees

getFalseEasting

public double getFalseEasting()

Get the false easting, in km.

Returns:

the false easting in km

setFalseEasting

public void setFalseEasting(double falseEasting)

Set the false_easting, in km. natural_x_coordinate + false_easting = x coordinate

Parameters:

falseEasting - x offset

getFalseNorthing

public double getFalseNorthing()

Get the false northing, in km.

Returns:

the false northing in km

setFalseNorthing

public void setFalseNorthing(double falseNorthing)

Set the false northing, in km. natural_y_coordinate + false_northing = y coordinate

Parameters:

falseNorthing - y offset

getProjectionTypeLabel

public String getProjectionTypeLabel()

Get the label to be used in the gui for this type of projection

Overrides:

getProjectionTypeLabel in class ProjectionImpl

Returns:

Type label

paramsToString

public String paramsToString()

Create a String of the parameters.

Specified by:

paramsToString in interface Projection

Specified by:

paramsToString in class ProjectionImpl

Returns:

a String of the parameters

crossSeam

public boolean crossSeam(ProjectionPoint pt1,
                         ProjectionPoint pt2)

This returns true when the line between pt1 and pt2 crosses the seam. When the cone is flattened, the "seam" is lon0 +- 180.

Specified by:

crossSeam in interface Projection

Specified by:

crossSeam in class ProjectionImpl

Parameters:

pt1 - point 1

pt2 - point 2

Returns:

true when the line between pt1 and pt2 crosses the seam.

latLonToProj

public ProjectionPoint latLonToProj(LatLonPoint latlon,
                                    ProjectionPointImpl result)

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

result - the object to write to

Returns:

the given result

projToLatLon

public 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.

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

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