ucar.unidata.geoloc.projection.proj4
Class StereographicAzimuthalProjection

java.lang.Object
  ucar.unidata.geoloc.ProjectionImpl
      ucar.unidata.geoloc.projection.proj4.StereographicAzimuthalProjection

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Projection

public class StereographicAzimuthalProjection
extends ProjectionImpl

taken from the USGS PROJ package.

Author:

Heiko.Klein@met.no

See Also:

Serialized Form

Field Summary

static int	EQUATOR
static int	NORTH_POLE
static int	OBLIQUE
static int	SOUTH_POLE

Fields inherited from class ucar.unidata.geoloc.ProjectionImpl

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

Constructor Summary

StereographicAzimuthalProjection()

StereographicAzimuthalProjection(double latt, double lont, double scale, double trueScaleLat, double false_easting, double false_northing, Earth earth)
Construct a Stereographic Projection.

Method Summary

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(java.lang.Object proj) Returns true if this represents the same Projection as proj.
java.lang.String	getProjectionTypeLabel() Get the label to be used in the gui for this type of projection.
int	hashCode()
boolean	hasInverse()
void	initialize()
boolean	isConformal() Returns true if this projection is conformal
ProjectionPoint	latLonToProj(LatLonPoint latLon, ProjectionPointImpl destPoint) Convert a LatLonPoint to projection coordinates
static void	main(java.lang.String[] args)
java.lang.String	paramsToString() Get a string representation of the projection parameters
java.awt.geom.Point2D.Double	project(double lam, double phi, java.awt.geom.Point2D.Double xy)
java.awt.geom.Point2D.Double	projectInverse(double x, double y, java.awt.geom.Point2D.Double lp)
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.

Methods inherited from class ucar.unidata.geoloc.ProjectionImpl

addParameter, addParameter, addParameter, clone, getClassName, getDefaultMapArea, getDefaultMapAreaLL, getHeader, getLatLonBoundingBox, getName, getProjectionParameters, isLatLon, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProjBB, projToLatLon, projToLatLon, projToLatLon, projToLatLon, projToLatLon, projToLatLon, projToLatLonBB, setDefaultMapArea, setName, toString

Methods inherited from class java.lang.Object

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

Field Detail

NORTH_POLE

public static final int NORTH_POLE

See Also:

Constant Field Values

SOUTH_POLE

public static final int SOUTH_POLE

See Also:

Constant Field Values

EQUATOR

public static final int EQUATOR

See Also:

Constant Field Values

OBLIQUE

public static final int OBLIQUE

See Also:

Constant Field Values

Constructor Detail

StereographicAzimuthalProjection

public StereographicAzimuthalProjection()

StereographicAzimuthalProjection

public StereographicAzimuthalProjection(double latt,
                                        double lont,
                                        double scale,
                                        double trueScaleLat,
                                        double false_easting,
                                        double false_northing,
                                        Earth earth)

Construct a Stereographic Projection.

Parameters:

latt - tangent point of projection, also origin of projection coord system, in degree

lont - tangent point of projection, also origin of projection coord system, in degree

trueScaleLat - latitude in degree where scale is scale, use 90. if not used

scale - scale factor at tangent point, "normally 1.0 but may be reduced"

Method Detail

initialize

public void initialize()

project

public java.awt.geom.Point2D.Double project(double lam,
                                            double phi,
                                            java.awt.geom.Point2D.Double xy)

projectInverse

public java.awt.geom.Point2D.Double projectInverse(double x,
                                                   double y,
                                                   java.awt.geom.Point2D.Double lp)

isConformal

public boolean isConformal()

Returns true if this projection is conformal

hasInverse

public boolean hasInverse()

getProjectionTypeLabel

public java.lang.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

paramsToString

public java.lang.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(java.lang.Object proj)

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:

proj - projection in question

Returns:

true if this represents the same Projection as proj.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

main

public static void main(java.lang.String[] args)