| gvSIG desktop 1

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

 *

 * Copyright (C) 2006 Prodevelop 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

 *   http://www.gvsig.gva.es

 *

 *    or

 *

 *   Prodevelop Integraci?n de Tecnolog?as SL

 *   Conde Salvatierra de ?lava , 34-10

 *   46004 Valencia

 *   Spain

 *

 *   +34 963 510 612

 *   +34 963 510 968

 *   gis@prodevelop.es

 *   http://www.prodevelop.es

 *

 *    or

 *

 *   Instituto de Rob?tica

 *   Apartado de correos 2085

 *   46071 Valencia

 *   (Spain)

 *   

 *   +34 963 543 577

 *   jjordan@robotica.uv.es

 *   http://robotica.uv.es

 *   

 */

package es.prodevelop.gvsig.mobile.fmap.proj;

import es.prodevelop.geodetic.utils.conversion.GeoUtils;

/**

 * Basic projection class.

 * 

 * @see es.prodevelop.geodetic.utils.conversion.GeoUtils

 * 

 * @author jldominguez

 *

 */

public class Projection implements IProjection {

        private String abbreviation = null;

        private String unit = "?";

        private double metersPerUnit = 1;

        /**

         * Constructor

         * @param ab abbreviation

         */

        public Projection(String ab, String u, double meters_per_unit) {

                abbreviation = ab;

                unit = u;

                metersPerUnit = meters_per_unit;

        }

        /**

         * @see es.prodevelop.gvsig.mobile.fmap.proj.IProjection#getScale(double, double, double, double)

         */

        public double getScale(double minX, double maxX, double img_width, double dpi) {

                double inches = img_width / dpi;

                double meters = inches * 0.0254; 

                return GeoUtils.getScale(this, maxX-minX, meters);

        }

        /**

         * @see es.prodevelop.gvsig.mobile.fmap.proj.IProjection#getAbrev()

         */

        public String getAbrev() {

                return abbreviation;

        }

        /**

         * @see es.prodevelop.gvsig.mobile.fmap.proj.IProjection#getUnitsAbbrev()

         */

        public String getUnitsAbbrev() {

                return unit;

//                if (abbreviation.length() == 9) return "?";

//                if (abbreviation.indexOf("EPSG:230") != -1) return "m";

//                if (abbreviation.indexOf("EPSG:326") != -1) return "m";

//                if (abbreviation.indexOf("EPSG:327") != -1) return "m";

//                return "u";

        }

        /**

         * @see es.prodevelop.gvsig.mobile.fmap.proj.IProjection#getMetersPerProjUnit()

         */

        public double getMetersPerProjUnit() {

                return metersPerUnit;

//                if (abbreviation.compareToIgnoreCase(GeoUtils.CRS_CODE_WGS_84) == 0) {

//                        return 10000000.0 / 90.0;

//                } else {

//                        return 1.0;

//                }

        }

}