org.cts.op.projection
Class ObliqueMercator

java.lang.Object
  org.cts.IdentifiableComponent
      org.cts.op.AbstractCoordinateOperation
          org.cts.op.projection.Projection
              org.cts.op.projection.ObliqueMercator

All Implemented Interfaces:

Identifiable, CoordinateOperation

public class ObliqueMercator
extends Projection

The Oblique Mercator Projection (OMERC).

Author:

Jules Party

Nested Class Summary

Nested classes/interfaces inherited from class org.cts.op.projection.Projection

Projection.Orientation, Projection.Property, Projection.Surface

Field Summary

protected double	A
protected double	alphac
protected double	B
protected double	FE
protected double	FN
protected double	gamma0
protected double	gammac
protected double	H
protected double[]	invcoeff
protected double	kc
protected double	lambda0
protected double	latc
protected double	lonc
static Identifier	OMERC The Identifier used for all Oblique Mercator projections.
protected double	uc

Fields inherited from class org.cts.op.projection.Projection

DEFAULT_PARAMETERS

Fields inherited from class org.cts.op.AbstractCoordinateOperation

precision

Fields inherited from interface org.cts.Identifiable

DEFAULT, LOCAL, UNKNOWN

Constructor Summary

ObliqueMercator(Ellipsoid ellipsoid, Map<String,Measure> parameters)
Create a new Oblique Mercator Projection corresponding to the Ellipsoid and the list of parameters given in argument and initialize common parameters FE, FN and other parameters useful for the projection.

Method Summary

Projection.Orientation	getOrientation() Return the Orientation of this Projection.
Projection.Property	getProperty() Return the Property of this Projection.
Projection.Surface	getSurface() Return the Surface type of this Projection.
CoordinateOperation	inverse() Creates the inverse operation for Oblique Mercator Projection.
double[]	transform(double[] coord) Transform coord using the Oblique Mercator Projection.

Methods inherited from class org.cts.op.projection.Projection

equals, getAzimuth, getCentralMeridian, getDefaultParameters, getFalseEasting, getFalseNorthing, getLatitudeOfOrigin, getLatitudeOfTrueScale, getRectifiedGridAngle, getScaleFactor, getSemiMajorAxis, getSemiMinorAxis, getStandardParallel1, getStandardParallel2, hashCode, toWKT

Methods inherited from class org.cts.op.AbstractCoordinateOperation

getPrecision

Methods inherited from class org.cts.IdentifiableComponent

addAlias, addRemark, getAliases, getAuthorityKey, getAuthorityName, getCode, getComponent, getIdentifier, getName, getRemarks, getShortName, setIdentifier, setRemarks, setShortName, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cts.Identifiable

addAlias, addRemark, getAliases, getAuthorityKey, getAuthorityName, getCode, getName, getRemarks, getShortName, setRemarks, setShortName

Field Detail

OMERC

public static final Identifier OMERC

The Identifier used for all Oblique Mercator projections.

latc

protected final double latc

lonc

protected final double lonc

alphac

protected final double alphac

gammac

protected final double gammac

kc

protected final double kc

FE

protected final double FE

FN

protected final double FN

B

protected final double B

A

protected final double A

H

protected final double H

gamma0

protected final double gamma0

lambda0

protected final double lambda0

uc

protected final double uc

invcoeff

protected final double[] invcoeff

Constructor Detail

ObliqueMercator

public ObliqueMercator(Ellipsoid ellipsoid,
                       Map<String,Measure> parameters)

Create a new Oblique Mercator Projection corresponding to the Ellipsoid and the list of parameters given in argument and initialize common parameters FE, FN and other parameters useful for the projection.

Parameters:

ellipsoid - ellipsoid used to define the projection.

parameters - a map of useful parameters to define the projection.

Method Detail

getSurface

public Projection.Surface getSurface()

Return the Surface type of this Projection.

Specified by:

getSurface in class Projection

getProperty

public Projection.Property getProperty()

Return the Property of this Projection.

Specified by:

getProperty in class Projection

getOrientation

public Projection.Orientation getOrientation()

Return the Orientation of this Projection.

Specified by:

getOrientation in class Projection

transform

public double[] transform(double[] coord)
                   throws CoordinateDimensionException

Transform coord using the Oblique Mercator Projection. Input coord is supposed to be a geographic latitude / longitude coordinate in radians. Algorithm based on the OGP's Guidance Note Number 7 Part 2 :

Specified by:

transform in interface CoordinateOperation

Specified by:

transform in class AbstractCoordinateOperation

Parameters:

coord - coordinate to transform

Returns:

a double array containing the output coordinate

Throws:

CoordinateDimensionException - if coord length is not compatible with this CoordinateOperation.

inverse

public CoordinateOperation inverse()
                            throws NonInvertibleOperationException

Creates the inverse operation for Oblique Mercator Projection. Input coord is supposed to be a projected easting / northing coordinate in meters. Algorithm based on the OGP's Guidance Note Number 7 Part 2 :

Specified by:

inverse in interface CoordinateOperation

Overrides:

inverse in class AbstractCoordinateOperation

Parameters:

coord - coordinate to transform

Throws:

NonInvertibleOperationException