ucar.unidata.geoloc.projection.proj4

Class LambertConformalConicEllipse

java.lang.Object

ucar.unidata.geoloc.projection.AbstractProjection

ucar.unidata.geoloc.projection.proj4.LambertConformalConicEllipse

All Implemented Interfaces:

Projection

@Immutable
public class LambertConformalConicEllipse
extends AbstractProjection

Adapted from com.jhlabs.map.proj.LambertConformalConicProjection

See Also:

"http://www.jhlabs.com/java/maps/proj/index.html", "http://trac.osgeo.org/proj/"

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
LambertConformalConicEllipse() Constructor with default parameters
LambertConformalConicEllipse(double lat0, double lon0, double par1, double par2, double falseEasting, double falseNorthing, Earth earth) Construct a LambertConformal Projection, two standard parellels.

Method Summary

Modifier and Type	Method and Description
Projection	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)
Earth	getEarth()
double	getFalseEasting() Get the false easting, in km.
double	getFalseNorthing() Get the false northing, in km.
double	getOriginLat() Get the origin latitude.
double	getOriginLon() Get the origin longitude.
double	getParallelOne() Get the first standard parallel
double	getParallelTwo() Get the second standard parallel
String	getProjectionTypeLabel() Get the label to be used in the gui for this type of projection
int	hashCode()
ProjectionPoint	latLonToProj(LatLonPoint latLon) Convert a LatLonPoint to projection coordinates.
String	paramsToString() Create a String of the 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

LambertConformalConicEllipse

public LambertConformalConicEllipse()

Constructor with default parameters

LambertConformalConicEllipse

public LambertConformalConicEllipse(double lat0,
                                    double lon0,
                                    double par1,
                                    double par2,
                                    double falseEasting,
                                    double falseNorthing,
                                    Earth earth)

Construct a LambertConformal Projection, two standard parellels. For the one standard parellel case, set them both to the same value.

Parameters:

lat0 - lat origin of the coord. system on the projection plane

lon0 - lon origin of the coord. system on the projection plane

par1 - standard parallel 1

par2 - standard parallel 2

falseEasting - natural_x_coordinate + false_easting = x coordinate in km

falseNorthing - natural_y_coordinate + false_northing = y coordinate in km

earth - shape of the earth

Throws:

IllegalArgumentException - if lat0, par1, par2 = +/-90 deg

Method Detail

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.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getEarth

public Earth getEarth()

getParallelTwo

public double getParallelTwo()

Get the second standard parallel

Returns:

the second standard parallel in degrees

getParallelOne

public double getParallelOne()

Get the first standard parallel

Returns:

the first standard parallel in degrees

getOriginLon

public double getOriginLon()

Get the origin longitude.

Returns:

the origin longitude in degrees

getOriginLat

public double getOriginLat()

Get the origin latitude.

Returns:

the origin latitude in degrees

getFalseEasting

public double getFalseEasting()

Get the false easting, in km.

Returns:

the false easting in km

getFalseNorthing

public double getFalseNorthing()

Get the false northing, in km.

Returns:

the false northing in km

getProjectionTypeLabel

public String getProjectionTypeLabel()

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

Overrides:

getProjectionTypeLabel in class AbstractProjection

Returns:

Type label

paramsToString

public String paramsToString()

Create a String of the parameters.

Specified by:

paramsToString in interface Projection

Specified by:

paramsToString in class AbstractProjection

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.

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)

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.