Class ExtendedTransverseMercatorProjection

java.lang.Object

org.locationtech.proj4j.proj.Projection

org.locationtech.proj4j.proj.CylindricalProjection

org.locationtech.proj4j.proj.ExtendedTransverseMercatorProjection

All Implemented Interfaces:

Serializable, Cloneable

public class ExtendedTransverseMercatorProjection
extends CylindricalProjection

See Also:

• Proj.4 issue 316
• proj_etmerc.c
• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
(package private) double[]	cbg
(package private) double[]	cgb
(package private) double[]	gtu
private static final double	HUGE_VAL
protected boolean	isSouth	Indicates whether a Southern Hemisphere UTM zone
private static final int	PROJ_ETMERC_ORDER
(package private) double	Qn
private static final long	serialVersionUID
(package private) double[]	utg
(package private) double	Zb

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
ExtendedTransverseMercatorProjection()
ExtendedTransverseMercatorProjection(Ellipsoid ellipsoid, double lon_0, double lat_0, double k, double x_0, double y_0)

Method Summary

Modifier and Type	Method	Description
(package private) static double	asinhy(double x)
(package private) static double	clens(double[] a, int size, double arg_r)
(package private) static double	clenS(double[] a, int size, double arg_r, double arg_i, double[] R, double[] I)
Object	clone()
(package private) static double	gatg(double[] p1, int len_p1, double B)
boolean	getSouthernHemisphere()
boolean	hasInverse()	Tests whether this projection has an inverse.
void	initialize()	Initialize the projection.
boolean	isRectilinear()	Tests whether under this projection lines of latitude and longitude form a rectangular grid
(package private) static double	log1py(double x)
ProjCoordinate	project(double lplam, double lpphi, ProjCoordinate xy)	Computes the projection of a given point (i.e.
ProjCoordinate	projectInverse(double x, double y, ProjCoordinate out)	Computes the inverse projection of a given point (i.e.
void	setSouthernHemisphere(boolean isSouth)
void	setUTMZone(int zone)
String	toString()

Methods inherited from class Projection

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, getTrueScaleLatitude, getTrueScaleLatitudeDegrees, getUnits, hashCode, inside, inverseProject, inverseProjectRadians, isConformal, isEqualArea, isGeographic, 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, setTrueScaleLatitude, setTrueScaleLatitudeDegrees, setUnits

Methods inherited from class Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

Qn

double Qn

Zb

double Zb

cgb

double[] cgb

cbg

double[] cbg

utg

double[] utg

gtu

double[] gtu

isSouth

protected boolean isSouth

Indicates whether a Southern Hemisphere UTM zone

PROJ_ETMERC_ORDER

private static final int PROJ_ETMERC_ORDER

See Also:

• Constant Field Values

HUGE_VAL

private static final double HUGE_VAL

See Also:

• Constant Field Values

Constructor Details

ExtendedTransverseMercatorProjection

public ExtendedTransverseMercatorProjection()

ExtendedTransverseMercatorProjection

public ExtendedTransverseMercatorProjection(Ellipsoid ellipsoid,
 double lon_0,
 double lat_0,
 double k,
 double x_0,
 double y_0)

Method Details

setSouthernHemisphere

public void setSouthernHemisphere(boolean isSouth)

Overrides:

setSouthernHemisphere in class Projection

getSouthernHemisphere

public boolean getSouthernHemisphere()

Overrides:

getSouthernHemisphere in class Projection

log1py

static double log1py(double x)

asinhy

static double asinhy(double x)

gatg

static double gatg(double[] p1,
 int len_p1,
 double B)

clenS

static double clenS(double[] a,
 int size,
 double arg_r,
 double arg_i,
 double[] R,
 double[] I)

clens

static double clens(double[] a,
 int size,
 double arg_r)

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

projectInverse

public ProjCoordinate projectInverse(double x,
 double y,
 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:

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

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

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

Returns:

the target coordinate

setUTMZone

public void setUTMZone(int zone)

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

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

isRectilinear

public boolean isRectilinear()

Description copied from class: Projection

Tests whether under this projection lines of latitude and longitude form a rectangular grid

Overrides:

isRectilinear in class CylindricalProjection

clone

public Object clone()

Overrides:

clone in class Projection

toString

public String toString()

Overrides:

toString in class CylindricalProjection