Application: gvSIG desktop » gvSIG projections

/*

 *    GeoTools - OpenSource mapping toolkit

 *    http://geotools.org

 *

 *   (C) 2005-2006, Geotools Project Managment Committee (PMC)

 *

 *    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; either

 *    version 2.1 of the License, or (at your option) any later version.

 *

 *    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.operation.projection;

// OpenGIS dependencies

import org.geotools.metadata.iso.citation.CitationImpl;

import org.geotools.referencing.NamedIdentifier;

import org.geotools.resources.cts.ResourceKeys;

import org.geotools.resources.cts.Resources;

import org.opengis.parameter.ParameterDescriptor;

import org.opengis.parameter.ParameterDescriptorGroup;

import org.opengis.parameter.ParameterNotFoundException;

import org.opengis.parameter.ParameterValueGroup;

import org.opengis.referencing.FactoryException;

import org.opengis.referencing.operation.CylindricalProjection;

import org.opengis.referencing.operation.MathTransform;

//import org.geotools.resources.i18n.ErrorKeys;

//import org.geotools.resources.i18n.Errors;

/**

 * Plate Carree (or Equirectangular) projection. This is a particular case of

 * {@linkplain IdrEquidistantCylindrical Equidistant Cylindrical} projection where the

 * {@code standard_parallel_1} is 0.

 *

 * @see <A HREF="http://www.remotesensing.org/geotiff/proj_list/equirectangular.html">"Equirectangular" on Remote Sensing</A>

 *

 * @since 2.2

 * @source $URL: http://svn.geotools.org/geotools/tags/2.3.0/module/referencing/src/org/geotools/referencing/operation/projection/PlateCarree.java $

 * @version $Id: IdrPlateCarree.java 12357 2007-06-27 09:05:41Z dguerrero $

 * @author John Grange

 * @author Martin Desruisseaux

 */

public class IdrPlateCarree extends IdrEquidistantCylindrical {

    /**

     * Constructs a new map projection from the supplied parameters.

     *

     * @param  parameters The parameter values in standard units.

     * @throws ParameterNotFoundException if a mandatory parameter is missing.

     */

    protected IdrPlateCarree(final ParameterValueGroup parameters) throws ParameterNotFoundException {

        super(parameters);

    }

    /**

     * {@inheritDoc}

     */

    public ParameterDescriptorGroup getParameterDescriptors() {

        return Provider.PARAMETERS;

    }

    /**

     * The {@link org.geotools.referencing.operation.MathTransformProvider} for an

     * {@linkplain org.geotools.referencing.operation.projection.IdrPlateCarree Plate Carree}

     * projection.

     *

     * @see org.geotools.referencing.operation.DefaultMathTransformFactory

     *

     * @since 2.2

     * @version $Id: IdrPlateCarree.java 12357 2007-06-27 09:05:41Z dguerrero $

     * @author John Grange

     */

    public static class Provider extends AbstractProvider {

        /**

         * The parameters group.

         */

        static final ParameterDescriptorGroup PARAMETERS = createDescriptorGroup(new NamedIdentifier[] {

                new NamedIdentifier(CitationImpl.ESRI,     "Plate_Carree"),

                new NamedIdentifier(CitationImpl.OGC,      "Equirectangular"),

                new NamedIdentifier(CitationImpl.GEOTIFF,  "CT_Equirectangular"),

                new NamedIdentifier(new CitationImpl("IDR"), "IDR")

            }, new ParameterDescriptor[] {

                SEMI_MAJOR,       SEMI_MINOR,

                                  CENTRAL_MERIDIAN,

                FALSE_EASTING,    FALSE_NORTHING

            });

        /**

         * Constructs a new provider. 

         */

        public Provider() {

            super(PARAMETERS);

        }

        /**

         * Returns the operation type for this map projection.

         */

        protected Class getOperationType() {

            return CylindricalProjection.class;

        }

        /**

         * Creates a transform from the specified group of parameter values.

         *

         * @param  parameters The group of parameter values.

         * @return The created math transform.

         * @throws ParameterNotFoundException if a required parameter was not found.

         */

        protected MathTransform createMathTransform(final ParameterValueGroup parameters) 

                throws ParameterNotFoundException, FactoryException

        {

            if (isSpherical(parameters)) {

                return new IdrPlateCarree(parameters);

            } else {

                throw new FactoryException(Resources.format(ResourceKeys.ERROR_ELLIPTICAL_NOT_SUPPORTED));

            }

        }

    }

}