Application: gvSIG desktop

package org.gvsig.gpe.gml.writer.geometries;

import java.io.IOException;

import org.gvsig.gpe.GPEErrorHandler;

import org.gvsig.gpe.gml.GMLTags;

import org.gvsig.gpe.gml.utils.GMLUtilsParser;

import org.gvsig.gpe.warnings.PolygonAutomaticallyClosedWarning;

import org.gvsig.gpe.xml.writer.Writer;

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

 *

 * Copyright (C) 2004 IVER T.I. 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

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

 *

 * $Id: LinearRingWriter.java 12071 2007-06-07 14:53:59Z jorpiell $

 * $Log$

 * Revision 1.6  2007-06-07 14:53:30  jorpiell

 * Add the schema support

 *

 * Revision 1.5  2007/05/16 09:29:12  jorpiell

 * The polygons has to be closed

 *

 * Revision 1.4  2007/05/14 11:18:12  jorpiell

 * Add the ErrorHandler to all the methods

 *

 * Revision 1.3  2007/05/08 10:24:16  jorpiell

 * Add comments to create javadocs

 *

 * Revision 1.2  2007/04/14 16:07:30  jorpiell

 * The writer has been created

 *

 * Revision 1.1  2007/04/12 10:23:41  jorpiell

 * Add some writers and the GPEXml parser

 *

 *

 */

/**

 * It writes a gml:linearRingType object. Example:

 * <p>

 * <pre>

 * <code>

 * <LinearRing>

 * <coordinates>0.0,0.0 100.0,0.0 50.0,100.0 0.0,0.0</coordinates>

 * </LinearRing>

 * </code>

 * </pre>

 * </p> 

 * @author Jorge Piera LLodr? (jorge.piera@iver.es)

 */

public class LinearRingWriter {

        /**

         * It writes a gml:linearRing init tag

         * @param writer

         * Writer to write the labels

         * @param errorHandler

         * To add the errors

         * @param id

         * Geometry ID

         * @param x

         * X coordinates 

         * @param y

         * Y coordinates 

         * @param z

         * Z coordinates 

         * @param srs

         * Spatial reference system

         * @throws IOException

         */

        public static void start(Writer writer, GPEErrorHandler errorHandler, String id, double[] x, double[] y,

                        double[] z, String srs) throws IOException{

                GeometriesWriter.startGeometry(writer, errorHandler, GMLTags.GML_LINEARRING, id, srs);

                //The first and the last coordinates has to be the same

                if ((x[0] != x[x.length - 1]) ||

                                (y[0] != y[y.length - 1]) ||

                                (z[0] != z[z.length - 1])){

                        errorHandler.addWarning(new PolygonAutomaticallyClosedWarning(x,y,z));

                        x = GMLUtilsParser.closePolygon(x);

                        y = GMLUtilsParser.closePolygon(y);

                        z = GMLUtilsParser.closePolygon(z);                        

                }                

                CoordinatesWriter.write(writer, errorHandler, x, y, z);                

        }

        /**

         * It writes a gml:linearRing end tag

         * @param writer

         * Writer to write the labels

         * @param errorHandler

         * To add the errors

         * @throws IOException

         */

        public static void end(Writer writer, GPEErrorHandler errorHandler) throws IOException{

                GeometriesWriter.endGeometry(writer, errorHandler, GMLTags.GML_LINEARRING);

        }

}