Application: gvSIG desktop » gvSIG projections

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2006 Instituto de Desarrollo Regional and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

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

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   Instituto de Desarrollo Regional (Universidad de Castilla La-Mancha)

 *   Campus Universitario s/n

 *   02071 Alabacete

 *   Spain

 *

 *   +34 967 599 200

 */

package org.gvsig.crs;

import java.io.File;

import java.util.TreeMap;

import org.cresques.cts.ICRSFactory;

import org.cresques.cts.IProjection;

import org.gvsig.crs.repository.EpsgRepository;

import org.gvsig.crs.repository.EpsgRepositoryGT;

import org.gvsig.crs.repository.EsriRepository;

import org.gvsig.crs.repository.EsriRepositoryGT;

import org.gvsig.crs.repository.ICrsRepository;

import org.gvsig.crs.repository.Iau2000Repository;

import org.gvsig.crs.repository.Iau2000RepositoryGT;

import org.gvsig.crs.repository.NoAuthRepository;

import org.gvsig.crs.repository.NoAuthRepositoryGT;

import org.gvsig.crs.repository.UsrRepository;

import org.gvsig.crs.repository.UsrRepositoryGT;

import org.gvsig.tools.dispose.Disposable;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * Clase que consigue el CRS a trav?s del c?digo de la EPSG o de

 * la cadena WKT

 *

 * @author Diego Guerrero Sevilla (diego.guerrero@uclm.es)

 *

 */

public class CrsFactory implements ICRSFactory {

    private static Logger logger = LoggerFactory.getLogger(CrsFactory.class);

    static TreeMap data = new TreeMap();

    private static File databaseFolder = null;

    private static File projLibFolder = null;

    public CrsFactory() {

    }

    /**

     * Obtiene un CRS a partir de su c?digo (p.e. EPSG:23030).

     *

     * @param code

     * @return

     * @throws CrsException

     */

    public ICrs getCRS(String code) throws CrsException {

        /*if (data.containsKey(code))

         return (ICrs) data.get(code);*/

        String repoId = "";

        String crsCode = "";

        ICrs crs = null;

        ICrsRepository repo = null;

        try {

            if ( code.indexOf(":", code.indexOf(":") + 1) < 0 ) {

                repoId = code.substring(0, code.indexOf(":"));

                crsCode = code.substring(code.indexOf(":") + 1);

                if ( repoId.equals("EPSG") ) {

                    repo = new EpsgRepositoryGT();

                    crs = repo.getCrs(crsCode);

                    if ( crs == null ) {

                        repo = new EpsgRepository();

                        crs = repo.getCrs(crsCode);

                    }

                } else if ( repoId.equals("IAU2000") ) {

                    repo = new Iau2000RepositoryGT();

                    crs = repo.getCrs(crsCode);

                    if ( crs == null ) {

                        repo = new Iau2000Repository();

                        crs = repo.getCrs(crsCode);

                    }

                } else if ( repoId.equals("CRS") ) {

                    repo = new NoAuthRepositoryGT();

                    crs = repo.getCrs(crsCode);

                    if ( crs == null ) {

                        repo = new NoAuthRepository();

                        crs = repo.getCrs(crsCode);

                    }

                } else if ( repoId.equals("ESRI") ) {

                    repo = new EsriRepositoryGT();

                    crs = repo.getCrs(crsCode);

                    if ( crs == null ) {

                        repo = new EsriRepository();

                        crs = repo.getCrs(crsCode);

                    }

                } else if ( repoId.equals("USR") ) {

                    repo = new UsrRepositoryGT();

                    crs = repo.getCrs(crsCode);

                    if ( crs == null ) {

                        repo = new UsrRepository();

                        crs = repo.getCrs(crsCode);

                    }

                }

            } else {

                String sourceParams = null;

                String targetParams = null;

                crsCode = code.substring(0, code.indexOf(":", code.indexOf(":") + 1));

                if ( code.indexOf("@") == -1 ) {

                    crsCode = crsCode.substring(0, crsCode.indexOf(","));

                } else {

                    sourceParams = code.substring(code.indexOf("@") + 1, code.lastIndexOf("@"));

                    targetParams = code.substring(code.lastIndexOf("@") + 1);

                    if ( sourceParams.equals("") ) {

                        sourceParams = null;

                    } else if ( targetParams.equals("1") ) { // Compativilidad con versiones de libJCrs sin soporte para transf. compuestas.

                        targetParams = sourceParams;

                        sourceParams = "";

                    }

                    if ( targetParams.equals("") || targetParams.equals("0") ) // Compativilidad con versiones de libJCrs sin soporte para transf. compuestas.

                    {

                        targetParams = null;

                    }

                }

                crs = getCRS(crsCode);

                if ( crs != null ) {

                    crs.setTransformationParams(sourceParams, targetParams);

                }

            }

            /*code = crs.getAbrev();

             data.put(code, crs);*/

            if ( crs == null ) {

                logger.debug("Can't find CRS '" + code + "' in available repositories.");

            } else {

                logger.debug("Found CRS '" + code + "' in repository '" +

                        (repo == null ? "unknow" : (repo.getClass().getSimpleName())) + "'.");

            }

            return crs;

        } finally {

            if( repo instanceof Disposable ) {

                ((Disposable)repo).dispose();

            }

        } 

        /*if (data.containsKey(code))

         return (Crs) data.get(code);

         Crs crs = new Crs(code);

         // LWS Esta l?nea sobra, cuando el cuadro de di?logo est?

         // mejor hecho.

         code = crs.getAbrev();

         data.put(code, crs);

         return crs;*/

    }

    /**

     *

     * @param epsg_code

     * @param code

     * @return

     * @throws CrsException

     */

    public ICrs getCRS(int epsg_code, String code) throws CrsException {

        /*if (data.containsKey(code))

         return (Crs) data.get(code);*/

        Crs crs = new Crs(epsg_code, code);

        // LWS Esta l?nea sobra, cuando el cuadro de di?logo est?

        // mejor hecho.

                /*code = crs.getAbrev();

         data.put(code, crs);*/

        return crs;

    }

    /**

     *

     * @param epsg_code

     * @param code

     * @param params

     * @return

     * @throws CrsException

     */

    public ICrs getCRS(int epsg_code, String code, String params) throws CrsException {

        /*if (data.containsKey(code))

         return (Crs) data.get(code);*/

        Crs crs = new Crs(epsg_code, code, params);

        // LWS Esta l?nea sobra, cuando el cuadro de di?logo est?

        // mejor hecho.

                /*code = crs.getAbrev();

         data.put(code, crs);*/

        return crs;

    }

    /**

     *

     */

    public IProjection get(String name) {

        try {

            return getCRS(name);

        } catch (CrsException e) {

            logger.error("Can't cget CRS name '" + name + "'.", e);

        }

        return null;

    }

    /**

     *

     */

    public boolean doesRigurousTransformations() {

        return true;

    }

    public static File getDataBaseFolder() {

        return databaseFolder;

    }

    public static void setDataBaseFolder(File folder) {

        databaseFolder = folder;

    }

    public static File getProjLibFolder() {

        return projLibFolder;

    }

    public static void setProjLibFolder(File folder) {

        projLibFolder = folder;

    }

}