Class PolyconicProjection

java.lang.Object

org.locationtech.proj4j.proj.Projection

org.locationtech.proj4j.proj.PolyconicProjection

All Implemented Interfaces:

Serializable, Cloneable

public class PolyconicProjection
extends Projection

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private static final double	CONV
private double[]	en
private static final int	I_ITER
private static final double	ITOL
private double	ml0
private static final int	N_ITER
private static final double	TOL

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
PolyconicProjection()

Method Summary

Modifier and Type	Method	Description
boolean	hasInverse()	Tests whether this projection has an inverse.
void	initialize()	Initialize the projection.
ProjCoordinate	project(double lplam, double lpphi, ProjCoordinate out)	Computes the projection of a given point (i.e.
ProjCoordinate	projectInverse(double xyx, double xyy, ProjCoordinate out)	Computes the inverse projection of a given point (i.e.
String	toString()

Methods inherited from class Projection

clone, equals, 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, hashCode, inside, inverseProject, inverseProjectRadians, isConformal, 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

ml0

private double ml0

en

private double[] en

TOL

private static final double TOL

See Also:

• Constant Field Values

CONV

private static final double CONV

See Also:

• Constant Field Values

N_ITER

private static final int N_ITER

See Also:

• Constant Field Values

I_ITER

private static final int I_ITER

See Also:

• Constant Field Values

ITOL

private static final double ITOL

See Also:

• Constant Field Values

Constructor Details

PolyconicProjection

public PolyconicProjection()

Method Details

project

public ProjCoordinate project(double lplam,
 double lpphi,
 ProjCoordinate out)

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:

lplam - the geographic x ordinate (in radians)

lpphi - the geographic y ordinatee (in radians)

out - the projected coordinate (in coordinate system units)

Returns:

the target coordinate

projectInverse

public ProjCoordinate projectInverse(double xyx,
 double xyy,
 ProjCoordinate out)

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:

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

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

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

Returns:

the target coordinate

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

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 Projection

toString

public String toString()

Overrides:

toString in class Projection