Class StereographicAzimuthalProjection

java.lang.Object

org.locationtech.proj4j.proj.Projection

org.locationtech.proj4j.proj.AzimuthalProjection

org.locationtech.proj4j.proj.StereographicAzimuthalProjection

All Implemented Interfaces:

Serializable, Cloneable

public class StereographicAzimuthalProjection
extends AzimuthalProjection

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private double	akm1
private static final double	TOL

Fields inherited from class AzimuthalProjection

cosphi0, EQUATOR, mode, NORTH_POLE, OBLIQUE, sinphi0, SOUTH_POLE

Fields inherited from class Projection

a, alpha, DTR, e, ellipsoid, EPS10, es, falseEasting, falseNorthing, fromMetres, geocentric, lonc, maxLatitude, maxLongitude, minLatitude, minLongitude, name, one_es, projectionLatitude, projectionLatitude1, projectionLatitude2, projectionLongitude, rone_es, RTD, scaleFactor, spherical, totalScale, trueScaleLatitude, unit

Constructor Summary

Constructors

Constructor	Description
StereographicAzimuthalProjection()
StereographicAzimuthalProjection(double projectionLatitude, double projectionLongitude)

Method Summary

Modifier and Type	Method	Description
boolean	hasInverse()	Tests whether this projection has an inverse.
void	initialize()	Initialize the projection.
boolean	isConformal()	Returns true if this projection is conformal
ProjCoordinate	project(double lam, double phi, ProjCoordinate xy)	Computes the projection of a given point (i.e.
ProjCoordinate	projectInverse(double x, double y, ProjCoordinate lp)	Computes the inverse projection of a given point (i.e.
void	setupUPS(int pole)
private double	ssfn(double phit, double sinphi, double eccen)
String	toString()

Methods inherited from class AzimuthalProjection

equals, getMapRadius, hashCode, inside, setMapRadius

Methods inherited from class Projection

clone, getAlpha, getAxisOrder, getEllipsoid, getEPSGCode, getEquatorRadius, getFalseEasting, getFalseNorthing, getFromMetres, getHeightOfOrbit, getLonC, getMaxLatitude, getMaxLatitudeDegrees, getMaxLongitude, getMaxLongitudeDegrees, getMinLatitude, getMinLatitudeDegrees, getMinLongitude, getMinLongitudeDegrees, getName, getPrimeMeridian, getPROJ4Description, getProjectionLatitude, getProjectionLatitude1, getProjectionLatitude1Degrees, getProjectionLatitude2, getProjectionLatitude2Degrees, getProjectionLatitudeDegrees, getProjectionLongitude, getProjectionLongitudeDegrees, getScaleFactor, getSouthernHemisphere, getTrueScaleLatitude, getTrueScaleLatitudeDegrees, getUnits, inverseProject, inverseProjectRadians, isEqualArea, isGeographic, isRectilinear, normalizeLongitude, normalizeLongitudeRadians, parallelsAreParallel, project, projectRadians, setAlpha, setAlphaDegrees, setAxisOrder, setEllipsoid, setFalseEasting, setFalseNorthing, setFromMetres, setGamma, setGammaDegrees, setHeightOfOrbit, setLonC, setLonCDegrees, setMaxLatitude, setMaxLongitude, setMaxLongitudeDegrees, setMinLatitude, setMinLongitude, setMinLongitudeDegrees, setName, setNoUoff, setPrimeMeridian, setProjectionLatitude, setProjectionLatitude1, setProjectionLatitude1Degrees, setProjectionLatitude2, setProjectionLatitude2Degrees, setProjectionLatitudeDegrees, setProjectionLongitude, setProjectionLongitudeDegrees, setRadius, setScaleFactor, setSouthernHemisphere, setTrueScaleLatitude, setTrueScaleLatitudeDegrees, setUnits

Methods inherited from class Object

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

Field Details

TOL

private static final double TOL

See Also:

• Constant Field Values

akm1

private double akm1

Constructor Details

StereographicAzimuthalProjection

public StereographicAzimuthalProjection()

StereographicAzimuthalProjection

public StereographicAzimuthalProjection(double projectionLatitude,
 double projectionLongitude)

Method Details

setupUPS

public void setupUPS(int pole)

initialize

public void initialize()

Description copied from class: Projection

Initialize the projection. This should be called after setting parameters and before using the projection. This is for performance reasons as initialization may be expensive.

Overrides:

initialize in class AzimuthalProjection

project

public ProjCoordinate project(double lam,
 double phi,
 ProjCoordinate xy)

Description copied from class: Projection

Computes the projection of a given point (i.e. from geographics to projection space). This should be overridden for all projections.

Overrides:

project in class Projection

Parameters:

lam - the geographic x ordinate (in radians)

phi - the geographic y ordinatee (in radians)

xy - the projected coordinate (in coordinate system units)

Returns:

the target coordinate

projectInverse

public ProjCoordinate projectInverse(double x,
 double y,
 ProjCoordinate lp)

Description copied from class: Projection

Computes the inverse projection of a given point (i.e. from projection space to geographics). This should be overridden for all projections.

Overrides:

projectInverse in class Projection

Parameters:

x - the projected x ordinate (in coordinate system units)

y - the projected y ordinate (in coordinate system units)

lp - the inverse-projected geographic coordinate (in radians)

Returns:

the target coordinate

isConformal

public boolean isConformal()

Returns true if this projection is conformal

Overrides:

isConformal in class Projection

Returns:

true if this projection is conformal

hasInverse

public boolean hasInverse()

Description copied from class: Projection

Tests whether this projection has an inverse. If this method returns true then the Projection.inverseProject(ProjCoordinate, ProjCoordinate) and Projection.inverseProjectRadians(ProjCoordinate, ProjCoordinate) methods will return meaningful results.

Overrides:

hasInverse in class Projection

Returns:

true if this projection has an inverse

ssfn

private double ssfn(double phit,
 double sinphi,
 double eccen)

toString

public String toString()

Overrides:

toString in class Projection