Class LagrangeProjection

java.lang.Object

org.locationtech.proj4j.proj.Projection

org.locationtech.proj4j.proj.LagrangeProjection

All Implemented Interfaces:

Serializable, Cloneable

public class LagrangeProjection
extends Projection

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private double	a1
private double	hrw
private double	phi1
private double	rw
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
LagrangeProjection()

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object that)	Represents quality between possible outputs of Projection.project(ProjCoordinate, ProjCoordinate).
double	getW()
int	hashCode()	Hash of those fields considered in Projection equalituy.
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 lplam, double lpphi, ProjCoordinate xy)	Computes the projection of a given point (i.e.
void	setW(double w)
String	toString()

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, inside, inverseProject, inverseProjectRadians, isEqualArea, isGeographic, isRectilinear, normalizeLongitude, normalizeLongitudeRadians, parallelsAreParallel, project, projectInverse, 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

hrw

private double hrw

rw

private double rw

a1

private double a1

phi1

private double phi1

TOL

private static final double TOL

See Also:

• Constant Field Values

Constructor Details

LagrangeProjection

public LagrangeProjection()

Method Details

project

public ProjCoordinate project(double lplam,
 double lpphi,
 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:

lplam - the geographic x ordinate (in radians)

lpphi - the geographic y ordinatee (in radians)

xy - the projected coordinate (in coordinate system units)

Returns:

the target coordinate

setW

public void setW(double w)

getW

public double getW()

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

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

toString

public String toString()

Overrides:

toString in class Projection

equals

public boolean equals(Object that)

Description copied from class: Projection

Represents quality between possible outputs of Projection.project(ProjCoordinate, ProjCoordinate). Subclasses of Projection should capture additional state that is used in the project method and delgate to base. Note: The name of the projection is not part of equality.

Overrides:

equals in class Projection

hashCode

public int hashCode()

Description copied from class: Projection

Hash of those fields considered in Projection equalituy. Subclasses that override equality should override hashCode.

Overrides:

hashCode in class Projection