org.deegree.model.csct.ct
Class MercatorProjection

java.lang.Object
  org.deegree.model.csct.ct.AbstractMathTransform
      org.deegree.model.csct.ct.MapProjection
          org.deegree.model.csct.ct.CylindricalProjection
              org.deegree.model.csct.ct.MercatorProjection

All Implemented Interfaces:

MathTransform, MathTransform2D

final class MercatorProjection
extends CylindricalProjection

Projection cylindrique de Mercator. Les parall�les et les m�ridients apparaissent comme des lignes droites et se croisent � angles droits; cette projection produit donc des cartes rectangulaires. L'�chelle est vrai le long de l'�quateur (par d�faut) ou le long de deux parall�les �quidistants de l'�quateur. Cette projection est utilis�e pour repr�senter des r�gions pr�s de l'�quateur. Elle est aussi souvent utilis�e pour la navigation maritime parce que toutes les lignes droites sur la carte sont des lignes loxodromiques, c'est-�-dire qu'un navire suivant cette ligne garderait un azimuth constant sur son compas.

R�f�rence: John P. Snyder (Map Projections - A Working Manual, U.S. Geological Survey Professional Paper 1395, 1987)

Version:

1.0

Author:

Andr� Gosselin, Martin Desruisseaux

Nested Class Summary

(package private) static class

MercatorProjection.Provider Informations about a MercatorProjection.

Field Summary

Fields inherited from class org.deegree.model.csct.ct.MapProjection

a, b, centralLatitude, centralMeridian, e, EPS, es, false_easting, false_northing, isSpherical, TOL

Constructor Summary

protected

MercatorProjection(Projection parameters) Construct a new map projection from the suplied parameters.

Method Summary

boolean	equals(Object object) Compares the specified object with this map projection for equality.
String	getName() Returns a human readable name localized for the specified locale.
int	hashCode() Returns a hash value for this projection.
protected Point2D	inverseTransform(double x, double y, Point2D ptDst) Transforms the specified (x,y) coordinate and stores the result in ptDst.
protected Point2D	transform(double x, double y, Point2D ptDst) Transforms the specified (x,y) coordinate and stores the result in ptDst.

Methods inherited from class org.deegree.model.csct.ct.MapProjection

cphi2, createTransformedShape, getDimSource, getDimTarget, inverse, inverseTransform, inverseTransform, inverseTransform, isIdentity, latitudeToRadians, longitudeToRadians, msfn, toString, toString, transform, transform, transform, tsfn

Methods inherited from class org.deegree.model.csct.ct.AbstractMathTransform

addParameter, addParameter, createTransformedShape, derivative, derivative, paramMT, transform

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deegree.model.csct.ct.MathTransform2D

derivative

Methods inherited from interface org.deegree.model.csct.ct.MathTransform

derivative, transform

Constructor Detail

MercatorProjection

protected MercatorProjection(Projection parameters)
                      throws MissingParameterException

Construct a new map projection from the suplied parameters.

Parameters:

parameters - The parameter values in standard units.

Throws:

MissingParameterException - if a mandatory parameter is missing.

Method Detail

getName

public String getName()

Returns a human readable name localized for the specified locale.

Specified by:

getName in class MapProjection

Returns:

The transform name localized in the specified locale if possible, or null if no name is available in any locale.

transform

protected Point2D transform(double x,
                            double y,
                            Point2D ptDst)
                     throws TransformException

Transforms the specified (x,y) coordinate and stores the result in ptDst.

Specified by:

transform in class MapProjection

Parameters:

x - The longitude of the coordinate, in radians.

y - The latitude of the coordinate, in radians.

ptDst - the specified coordinate point that stores the result of transforming ptSrc, or null. Ordinates will be in metres.

Returns:

the coordinate point after transforming ptSrc and stroring the result in ptDst.

Throws:

TransformException - if the point can't be transformed.

inverseTransform

protected Point2D inverseTransform(double x,
                                   double y,
                                   Point2D ptDst)
                            throws TransformException

Transforms the specified (x,y) coordinate and stores the result in ptDst.

Specified by:

inverseTransform in class MapProjection

Parameters:

x - The longitude of the coordinate, in metres.

y - The latitude of the coordinate, in metres.

ptDst - the specified coordinate point that stores the result of transforming ptSrc, or null. Ordinates will be in radians.

Returns:

the coordinate point after transforming ptSrc and stroring the result in ptDst.

Throws:

TransformException - if the point can't be transformed.

hashCode

public int hashCode()

Returns a hash value for this projection.

Overrides:

hashCode in class MapProjection

equals

public boolean equals(Object object)

Compares the specified object with this map projection for equality.

Overrides:

equals in class MapProjection