Class CassiniProjection

java.lang.Object

org.locationtech.proj4j.proj.Projection

org.locationtech.proj4j.proj.CassiniProjection

All Implemented Interfaces:

Serializable, Cloneable

public class CassiniProjection
extends Projection

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private double	a1
private double	a2
private double	c
private static final double	C1
private static final double	C2
private static final double	C3
private static final double	C4
private static final double	C5
private double	d2
private double	dd
private double[]	en
private static final double	EPS10
private double	m0
private double	n
private double	r
private double	t
private double	tn

Fields inherited from class Projection

a, alpha, DTR, e, ellipsoid, 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
CassiniProjection()

Method Summary

Modifier and Type	Method	Description
int	getEPSGCode()	Returns the ESPG code for this projection, or 0 if unknown.
boolean	hasInverse()	Tests whether this projection has an inverse.
void	initialize()	Initialize the projection.
ProjCoordinate	project(double lplam, double lpphi, ProjCoordinate xy)	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, 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

m0

private double m0

n

private double n

t

private double t

a1

private double a1

c

private double c

r

private double r

dd

private double dd

d2

private double d2

a2

private double a2

tn

private double tn

en

private double[] en

EPS10

private static final double EPS10

See Also:

• Constant Field Values

C1

private static final double C1

See Also:

• Constant Field Values

C2

private static final double C2

See Also:

• Constant Field Values

C3

private static final double C3

See Also:

• Constant Field Values

C4

private static final double C4

See Also:

• Constant Field Values

C5

private static final double C5

See Also:

• Constant Field Values

Constructor Details

CassiniProjection

public CassiniProjection()

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

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

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

getEPSGCode

public int getEPSGCode()

Returns the ESPG code for this projection, or 0 if unknown.

Overrides:

getEPSGCode in class Projection

toString

public String toString()

Overrides:

toString in class Projection