svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libRaster / src / org / gvsig / raster / dataset / serializer / GeoInfoRmfSerializer.java @ 31390
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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) 2007 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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package org.gvsig.raster.dataset.serializer; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.Point2D; |
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import java.io.IOException; |
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import java.io.Reader; |
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import java.io.StringReader; |
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import org.gvsig.raster.dataset.RasterDataset; |
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import org.gvsig.raster.dataset.rmf.ClassSerializer; |
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import org.gvsig.raster.dataset.rmf.ParsingException; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.extensionpoint.ExtensionPoint; |
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import org.gvsig.tools.extensionpoint.ExtensionPointManager; |
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import org.kxml2.io.KXmlParser; |
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import org.xmlpull.v1.XmlPullParserException; |
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/**
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* <P>
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* Clase para convertir a XML la informaci?n geo del raster y obtener esta informaci?n desde XML.
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* Esta clase implementa el interfaz IRmfBlock con los m?todos de escritura y
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* lectura. Estos ser?n utilizados por el gestor de ficheros RMF para escribir y
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* leer datos.
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* </P>
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* <P>
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* La estructura XML es la siguiente:
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* </P>
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* <P>
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* \<FLyrGeoRaster xmlns="http://www.gvsig.org"\><BR>
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* \<Extent\><BR>
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* \<X\>4.325548573549895\</X\><BR>
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* \<Y\>1952.062652448396\</Y\><BR>
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* \<RotationX\>-0.23070178571428576\</RotationX\><BR>
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* \<RotationY\>-0.1655108150921638\</RotationY\><BR>
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* \<PixelSizeX\>0.04363559968817176\</PixelSizeX\><BR>
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* \<PixelSizeY\>-0.43297650488377315\</PixelSizeY\><BR>
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* \<Width\>98.92190449308538\</Width\><BR>
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* \<Height\>-746.0185179147411\</Height\><BR>
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* \</Extent\><BR>
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* \<Dimension\><BR>
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* \<ImagePxWidth\>2268\</ImagePxWidth\><BR>
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* \<ImagePxHeight\>1724\</ImagePxHeight\><BR>
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* \</Dimension\><BR>
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* \</FLyrGeoRaster\><BR>
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* </P>
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*
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* @version 23/04/2007
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class GeoInfoRmfSerializer extends ClassSerializer { |
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//TAGS
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public static final String MAIN_TAG = "FLyrGeoRaster"; |
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public static final String EXTENT = "Extent"; |
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public static final String X = "X"; |
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public static final String Y = "Y"; |
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public static final String ROTX = "RotationX"; |
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public static final String ROTY = "RotationY"; |
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public static final String PSX = "PixelSizeX"; |
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public static final String PSY = "PixelSizeY"; |
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public static final String W = "Width"; |
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public static final String H = "Height"; |
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public static final String DIM = "Dimension"; |
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public static final String IMGW = "ImagePxWidth"; |
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public static final String IMGH = "ImagePxHeight"; |
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private RasterDataset dataset = null; |
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private AffineTransform at = null; |
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private Point2D dim = null; |
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/**
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* Registra GeoInfoRmfSerializer en los puntos de extension de Serializer
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*/
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public static void register() { |
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ExtensionPointManager extensionPoints =ToolsLocator.getExtensionPointManager(); |
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ExtensionPoint point=extensionPoints.get("Serializer");
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point.append("GeoInfo", "", GeoInfoRmfSerializer.class); |
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} |
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/**
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* Constructor. Asigna la tabla a serializar.
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* @param ColorTable tabla a convertir en XML
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*/
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public GeoInfoRmfSerializer(RasterDataset dataset) {
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this.dataset = dataset;
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} |
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/**
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* Constructor.
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*/
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public GeoInfoRmfSerializer(AffineTransform at, Point2D dim) { |
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this.at = at;
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this.dim = dim;
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} |
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/**
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* Constructor.
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*/
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public GeoInfoRmfSerializer() {
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#read(java.lang.String)
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*/
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public void read(String xml) throws ParsingException { |
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double x = 0, y = 0, rotX = 0, rotY = 0, psX = 0, psY = 0; |
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double imgW = 0, imgH = 0; |
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KXmlParser parser = new KXmlParser();
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Reader reader = new StringReader(xml); |
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try {
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parser.setInput(reader); |
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} catch (XmlPullParserException e) {
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throw new ParsingException(xml); |
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} |
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try {
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int tag = parser.nextTag();
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if ( parser.getEventType() != KXmlParser.END_DOCUMENT ){
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parser.require(KXmlParser.START_TAG, null, MAIN_TAG);
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while(tag != KXmlParser.END_DOCUMENT) {
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switch(tag) {
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case KXmlParser.START_TAG:
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if (parser.getName().compareTo(MAIN_TAG) == 0) { |
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x = Double.parseDouble(parserString(parser, X, null)); |
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y = Double.parseDouble(parserString(parser, Y, null)); |
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rotX = Double.parseDouble(parserString(parser, ROTX, null)); |
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rotY = Double.parseDouble(parserString(parser, ROTY, null)); |
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psX = Double.parseDouble(parserString(parser, PSX, null)); |
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psY = Double.parseDouble(parserString(parser, PSY, null)); |
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Double.parseDouble(parserString(parser, W, null)); |
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Double.parseDouble(parserString(parser, H, null)); |
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imgW = Double.parseDouble(parserString(parser, IMGW, null)); |
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imgH = Double.parseDouble(parserString(parser, IMGH, null)); |
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} |
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break;
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case KXmlParser.END_TAG:
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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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tag = parser.next(); |
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} |
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parser.require(KXmlParser.END_DOCUMENT, null, null); |
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} |
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reader.close(); |
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} catch (XmlPullParserException e) {
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throw new ParsingException(xml); |
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} catch (IOException e) { |
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throw new ParsingException(xml); |
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} |
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dim = new Point2D.Double(imgW, imgH); |
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at = new AffineTransform(psX, rotY, rotX, psY, x, y); |
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if (dataset != null) |
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dataset.setAffineTransform(at); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#write()
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*/
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public String write() { |
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StringBuffer b = new StringBuffer(); |
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if(dataset != null) { |
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at = dataset.getAffineTransform(); |
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dim = new Point2D.Double(dataset.getWidth(), dataset.getHeight()); |
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} |
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b.append("<" + MAIN_TAG + ">\n"); |
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b.append("\t<" + EXTENT + ">\n"); |
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putProperty(b, X, at.getTranslateX(), 3);
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putProperty(b, Y, at.getTranslateY(), 3);
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putProperty(b, ROTX, at.getShearX(), 3);
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putProperty(b, ROTY, at.getShearY(), 3);
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double wd = 0; |
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double hd = 0; |
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if(dataset != null) { |
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wd = (dataset.getExtent().getMax().getX() - dataset.getExtent().getMin().getX()); |
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hd = (dataset.getExtent().getMax().getY() - dataset.getExtent().getMin().getY()); |
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} |
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putProperty(b, PSX, at.getScaleX(), 3);
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putProperty(b, PSY, at.getScaleY(), 3);
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putProperty(b, W, wd, 3);
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putProperty(b, H, hd, 3);
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b.append("\t</" + EXTENT + ">\n"); |
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b.append("\t<" + DIM + ">\n"); |
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putProperty(b, IMGW, dim.getX(), 3);
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putProperty(b, IMGH, dim.getY(), 3);
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b.append("\t</" + DIM + ">\n"); |
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b.append("</" + MAIN_TAG + ">\n"); |
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return b.toString();
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#getResult()
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*/
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public Object getResult() { |
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return dataset;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#getMainTag()
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*/
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public String getMainTag() { |
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return MAIN_TAG;
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} |
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} |