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svn-gvsig-desktop / branches / v10 / libraries / libGPE-KML / src / org / gvsig / gpe / kml / parser / v21 / geometries / LatLonAltBoxBinding.java @ 18284

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package org.gvsig.gpe.kml.parser.v21.geometries;
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import java.io.IOException;
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import org.gvsig.gpe.kml.GPEDeafultKmlParser;
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import org.gvsig.gpe.kml.KmlTags;
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import org.kxml2.io.KXmlParser;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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 *
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 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.
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 *
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 * For more information, contact:
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 *
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 *  Generalitat Valenciana
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 *   Conselleria d'Infraestructures i Transport
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 *   Av. Blasco Ib??ez, 50
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 *   46010 VALENCIA
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 *   SPAIN
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 *
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 *      +34 963862235
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 *   gvsig@gva.es
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 *      www.gvsig.gva.es
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 *
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 *    or
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 *
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 *   IVER T.I. S.A
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 *   Salamanca 50
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 *   46005 Valencia
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 *   Spain
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 *
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 *   +34 963163400
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 *   dac@iver.es
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 */
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/* CVS MESSAGES:
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 *
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 * $Id:LatLonAltBoxBinding.java 357 2008-01-09 17:50:08Z jpiera $
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 * $Log$
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 * Revision 1.1  2007/05/11 07:06:29  jorpiell
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 * Refactoring of some package names
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 *
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 * Revision 1.1  2007/05/09 08:36:24  jorpiell
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 * Add the bbox to the layer
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 *
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 *
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 */
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/**
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 * This class parses a LatLonAltBox tag. Example:
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 * <p>
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 * <pre>
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 * <code> 
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 * &lt;LatLonAltBox&gt;
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 * &lt;north&gt;43.374&lt;/north&gt;
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 * &lt;south&gt;42.983&lt;/south&gt;
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 * &lt;east&gt;-0.335&lt;/east&gt;
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 * &lt;west&gt;-1.423&lt;/west&gt;
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 * &lt;minAltitude&gt;0&lt;/minAltitude&gt;
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 * &lt;maxAltitude&gt;0&lt;/maxAltitude&gt;
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 * &lt;/LatLonAltBox&gt;
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 * </code>
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 * </pre>
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 * </p> 
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 * @author Jorge Piera LLodr? (jorge.piera@iver.es)
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 * @see http://code.google.com/apis/kml/documentation/kml_tags_21.html#latlonaltbox
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 */
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public class LatLonAltBoxBinding {
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        /**
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         * It parses the LatLonAltBox tag
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         * @param parser
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         * The XML parser
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         * @param handler
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         * The GPE parser that contains the content handler and
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         * the error handler
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         * @return
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         * A Bounding box
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         * @throws IOException 
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         * @throws XmlPullParserException 
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         */
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        public Object parse(XmlPullParser parser,GPEDeafultKmlParser handler) throws XmlPullParserException, IOException {
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                boolean endFeature = false;
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                int currentTag;
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                Object bbox = null;
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                double north = 0;
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                double south = 0;
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                double east = 0;
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                double west = 0;
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                double minAltitude = 0;
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                double maxAltitude = 0;
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                String id = handler.getProfile().getGeometryBinding().getID(parser, handler);
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                String tag = parser.getName();
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                currentTag = parser.getEventType();
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                while (!endFeature){
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                        switch(currentTag){
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                        case KXmlParser.START_TAG:
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                                if (tag.compareTo(KmlTags.NORTH) == 0){
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                                        parser.next();
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                                        north = handler.getProfile().getDoubleBinding().parse(parser.getText());
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                                }else if (tag.compareTo(KmlTags.SOUTH) == 0){
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                                        parser.next();
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                                        south = handler.getProfile().getDoubleBinding().parse(parser.getText());
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                                }else if (tag.compareTo(KmlTags.EAST) == 0){
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                                        parser.next();
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                                        east = handler.getProfile().getDoubleBinding().parse(parser.getText());
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                                }else if (tag.compareTo(KmlTags.WEST) == 0){
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                                        parser.next();
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                                        west = handler.getProfile().getDoubleBinding().parse(parser.getText());
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                                }else if (tag.compareTo(KmlTags.MINALTITUDE) == 0){
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                                        parser.next();
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                                        minAltitude = handler.getProfile().getDoubleBinding().parse(parser.getText());
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                                }else if (tag.compareTo(KmlTags.MAXALTITUDE) == 0){
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                                        parser.next();
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                                        maxAltitude = handler.getProfile().getDoubleBinding().parse(parser.getText());
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                                }
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                                break;
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                        case KXmlParser.END_TAG:
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                                if (tag.compareTo(KmlTags.LATLONALTBOX) == 0){                                                
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                                        endFeature = true;
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                                        double[] x = {west,east};
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                                        double[] y = {south,north};
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                                        double[] z = {minAltitude,maxAltitude};
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                                        bbox = handler.getContentHandler().startBbox(id, x, y, z, KmlTags.DEFAULT_SRS);
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                                        handler.getContentHandler().endBbox(bbox);
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                                }
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                                break;
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                        case KXmlParser.TEXT:                                        
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                                break;
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                        }
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                        if (!endFeature){                                        
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                                currentTag = parser.next();
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                                tag = parser.getName();
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                        }
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                }                        
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                return bbox;        
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        }
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}
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