org.cts.op.projection

Class Mercator1SP

java.lang.Object

org.cts.IdentifiableComponent

org.cts.op.AbstractCoordinateOperation

org.cts.op.projection.Projection

org.cts.op.projection.Mercator1SP

All Implemented Interfaces:

Identifiable, CoordinateOperation

public class Mercator1SP
extends Projection

The Mercator Projection (MERC).

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

Fields

Modifier and Type	Field and Description
protected double	FE
protected double	FN
protected double[]	invcoeff
protected double	lat0
protected double	lon0
static Identifier	MERC The Identifier used for all Mercator 1SP projections.
protected double	n

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

Constructors

Constructor and Description
Mercator1SP(Ellipsoid ellipsoid, Map<String,Measure> parameters) Create a new Mercator 1SP Projection corresponding to the Ellipsoid and the list of parameters given in argument and initialize common parameters lon0, lat0, FE, FN and other parameters useful for the projection.

Method Summary

Modifier and Type	Method and Description
static double[]	getInverseMercatorCoeff(Ellipsoid ellps) Return the coefficients for the inverse Mercator projection associated with the ellipsoid in parameter.
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.
Projection	inverse() Creates the inverse operation for Mercator Projection.
double[]	transform(double[] coord) Transform coord using the 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, isDirect, toWKT

Methods inherited from class org.cts.op.AbstractCoordinateOperation

getPrecision, isIdentity

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

MERC

public static final Identifier MERC

The Identifier used for all Mercator 1SP projections.

lat0

protected final double lat0

lon0

protected final double lon0

FE

protected final double FE

FN

protected final double FN

n

protected final double n

invcoeff

protected final double[] invcoeff

Constructor Detail

Mercator1SP

public Mercator1SP(Ellipsoid ellipsoid,
                   Map<String,Measure> parameters)

Create a new Mercator 1SP Projection corresponding to the Ellipsoid and the list of parameters given in argument and initialize common parameters lon0, lat0, 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

getInverseMercatorCoeff

public static double[] getInverseMercatorCoeff(Ellipsoid ellps)

Return the coefficients for the inverse Mercator projection associated with the ellipsoid in parameter.

Parameters:

ellps - the projected ellipsoid

getSurface

public Projection.Surface getSurface()

Return the Surface type of this Projection.

Specified by:

getSurface in class Projection

Returns:

getProperty

public Projection.Property getProperty()

Return the Property of this Projection.

Specified by:

getProperty in class Projection

Returns:

getOrientation

public Projection.Orientation getOrientation()

Return the Orientation of this Projection.

Specified by:

getOrientation in class Projection

Returns:

transform

public double[] transform(double[] coord)

Transform coord using the 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 Projection inverse()

Creates the inverse operation for 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 Projection