org.osgeo.proj4j.proj

Class ObliqueMercatorProjection

java.lang.Object

org.osgeo.proj4j.proj.Projection

org.osgeo.proj4j.proj.CylindricalProjection

org.osgeo.proj4j.proj.ObliqueMercatorProjection

All Implemented Interfaces:

Cloneable

public class ObliqueMercatorProjection
extends CylindricalProjection

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

Field Summary

Fields inherited from class org.osgeo.proj4j.proj.Projection

a, alpha, DTR, e, ellipsoid, EPS10, es, falseEasting, falseNorthing, fromMetres, geocentric, isSouth, lonc, maxLatitude, maxLongitude, minLatitude, minLongitude, name, one_es, projectionLatitude, projectionLatitude1, projectionLatitude2, projectionLongitude, rone_es, RTD, scaleFactor, spherical, totalScale, trueScaleLatitude, unit

Constructor Summary

Constructors

Constructor and 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

Methods

Modifier and Type	Method and Description
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.
String	toString()

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

isRectilinear

Methods inherited from class org.osgeo.proj4j.proj.Projection

clone, getAlpha, getEllipsoid, getEPSGCode, getEquatorRadius, getFalseEasting, getFalseNorthing, getFromMetres, getLonC, getMaxLatitude, getMaxLatitudeDegrees, getMaxLongitude, getMaxLongitudeDegrees, getMinLatitude, getMinLatitudeDegrees, getMinLongitude, getMinLongitudeDegrees, getName, getPROJ4Description, getProjectionLatitude, getProjectionLatitude1, getProjectionLatitude1Degrees, getProjectionLatitude2, getProjectionLatitude2Degrees, getProjectionLatitudeDegrees, getProjectionLongitude, getProjectionLongitudeDegrees, getScaleFactor, getSouthernHemisphere, getTrueScaleLatitude, getTrueScaleLatitudeDegrees, inside, inverseProject, inverseProjectRadians, isConformal, isEqualArea, normalizeLongitude, normalizeLongitudeRadians, parallelsAreParallel, project, projectRadians, setAlphaDegrees, setEllipsoid, setFalseEasting, setFalseNorthing, setFromMetres, setLonCDegrees, setMaxLatitude, setMaxLongitude, setMaxLongitudeDegrees, setMinLatitude, setMinLongitude, setMinLongitudeDegrees, setName, setProjectionLatitude, setProjectionLatitude1, setProjectionLatitude1Degrees, setProjectionLatitude2, setProjectionLatitude2Degrees, setProjectionLatitudeDegrees, setProjectionLongitude, setProjectionLongitudeDegrees, setScaleFactor, setSouthernHemisphere, setTrueScaleLatitude, setTrueScaleLatitudeDegrees, setUnits

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

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

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 String toString()

Overrides:

toString in class CylindricalProjection