/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2004-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.referencing.factory.wms;
// OpenGIS dependencies
import org.opengis.parameter.ParameterValueGroup;
/**
* Auto Transverse Mercator ({@code AUTO:42002}).
* In the notation below, "<code>${var}</code>" denotes a reference to the value of a variable
* "{@code var}". The variables "{@code lat0}" and "{@code lon0}" are the central point of the
* projection appearing in the CRS parameter of the map request. The coordinate operation method
* uses ellipsoidal formulas.
*
* <pre>
* PROJCS["WGS 84 / Auto Tr. Mercator",
* GEOGCS["WGS 84",
* DATUM["WGS_1984",
* SPHEROID["WGS_1984", 6378137, 298.257223563]],
* PRIMEM["Greenwich", 0],
* UNIT["Decimal_Degree", 0.0174532925199433]],
* PROJECTION["Transverse_Mercator"],
* PARAMETER["Latitude_of_Origin", 0],
* PARAMETER["Central_Meridian", ${central_meridian}],
* PARAMETER["False_Easting", 500000],
* PARAMETER["False_Northing", ${false_northing}],
* PARAMETER["Scale_Factor", 0.9996],
* UNIT["Meter", 1]]
* </pre>
*
* Where:
*
* <pre>
* ${central_meridian} = ${lon0}
* ${false_northing} = (${lat0} >= 0.0) ? 0.0 : 10000000.0
* </pre>
*
* @source $URL$
* @version $Id$
* @author Jody Garnett
* @author Rueben Schulz
* @author Martin Desruisseaux
*/
final class Auto42002 extends Factlet {
/**
* A shared (thread-safe) instance.
*/
public static final Auto42002 DEFAULT = new Auto42002();
/**
* Do not allows instantiation except the {@link #DEFAULT} constant.
*/
private Auto42002() {
}
/**
* {@inheritDoc}
*/
public int code() {
return 42002;
}
/**
* {@inheritDoc}
*/
public String getName() {
return "WGS 84 / Auto Tr. Mercator";
}
/**
* {@inheritDoc}
*/
public String getClassification() {
return "Transverse_Mercator";
}
/**
* {@inheritDoc}
*/
protected void setProjectionParameters(final ParameterValueGroup parameters, final Code code) {
final double centralMeridian = code.longitude;
final double falseNorthing = code.latitude >= 0.0 ? 0.0 : 10000000.0;
parameters.parameter("latitude_of_origin").setValue(0.0);
parameters.parameter("central_meridian") .setValue(centralMeridian);
parameters.parameter("false_easting") .setValue(500000.0);
parameters.parameter("false_northing") .setValue(falseNorthing);
parameters.parameter("scale_factor") .setValue(0.9996);
}
}