Package org.locationtech.proj4j.proj

Class ObliqueMercatorProjection

java.lang.Object

org.locationtech.proj4j.proj.Projection

org.locationtech.proj4j.proj.CylindricalProjection

org.locationtech.proj4j.proj.ObliqueMercatorProjection

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class ObliqueMercatorProjection
extends CylindricalProjection

Oblique Mercator Projection algorithm is taken from the USGS PROJ package.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private double	al
private double	bl
private double	cosgam
private double	cosrot
private double	el
private boolean	ellips
private double	Gamma
private double	lam1
private double	lam2
private double	lamc
private boolean	no_uoff
private double	phi1
private double	phi2
private boolean	rot
private double	singam
private double	sinrot
private static double	TOL
private double	u_0

Fields inherited from class org.locationtech.proj4j.proj.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
ObliqueMercatorProjection()
ObliqueMercatorProjection(Ellipsoid ellipsoid, double lon_0, double lat_0, double alpha, double k, double x_0, double y_0)	Set up a projection suitable for State Plane Coordinates.

Method Summary

Modifier and Type	Method	Description
boolean	equals(java.lang.Object that)	Represents quality between possible outputs of Projection.project(ProjCoordinate, ProjCoordinate).
int	hashCode()	Hash of those fields considered in Projection equalituy.
boolean	hasInverse()	Tests whether this projection has an inverse.
void	initialize()	Initialize the projection.
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	setGamma(double gamma)
void	setNoUoff(boolean no_uoff)
java.lang.String	toString()

Methods inherited from class org.locationtech.proj4j.proj.CylindricalProjection

isRectilinear

Methods inherited from class org.locationtech.proj4j.proj.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, isConformal, isEqualArea, isGeographic, normalizeLongitude, normalizeLongitudeRadians, parallelsAreParallel, project, projectRadians, setAlpha, setAlphaDegrees, setAxisOrder, setEllipsoid, setFalseEasting, setFalseNorthing, setFromMetres, setGammaDegrees, setHeightOfOrbit, setLonC, setLonCDegrees, setMaxLatitude, setMaxLongitude, setMaxLongitudeDegrees, setMinLatitude, setMinLongitude, setMinLongitudeDegrees, setName, setPrimeMeridian, setProjectionLatitude, setProjectionLatitude1, setProjectionLatitude1Degrees, setProjectionLatitude2, setProjectionLatitude2Degrees, setProjectionLatitudeDegrees, setProjectionLongitude, setProjectionLongitudeDegrees, setRadius, setScaleFactor, setSouthernHemisphere, setTrueScaleLatitude, setTrueScaleLatitudeDegrees, setUnits

Methods inherited from class java.lang.Object

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

Field Detail

TOL

private static final double TOL

See Also:

Constant Field Values

lamc

private double lamc

lam1

private double lam1

phi1

private double phi1

lam2

private double lam2

phi2

private double phi2

Gamma

private double Gamma

al

private double al

bl

private double bl

el

private double el

singam

private double singam

cosgam

private double cosgam

sinrot

private double sinrot

cosrot

private double cosrot

u_0

private double u_0

ellips

private boolean ellips

rot

private boolean rot

no_uoff

private boolean no_uoff

Constructor Detail

ObliqueMercatorProjection

public ObliqueMercatorProjection()

ObliqueMercatorProjection

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

Set up a projection suitable for State Plane Coordinates.

Method Detail

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

setGamma

public void setGamma(double gamma)

Overrides:

setGamma in class Projection

setNoUoff

public void setNoUoff(boolean no_uoff)

Overrides:

setNoUoff in class Projection

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

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 java.lang.String toString()

Overrides:

toString in class CylindricalProjection

equals

public boolean equals(java.lang.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