Application: gvSIG desktop

/* 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

 */

package com.iver.cit.gvsig.fmap.layers;

import java.awt.Dimension;

import java.awt.Graphics2D;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.geom.AffineTransform;

import java.awt.geom.NoninvertibleTransformException;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import java.awt.image.BufferedImage;

import java.awt.image.DataBuffer;

import java.io.File;

import java.io.IOException;

import java.lang.reflect.Constructor;

import java.lang.reflect.InvocationTargetException;

import java.net.MalformedURLException;

import java.net.URL;

import java.util.ArrayList;

import java.util.Hashtable;

import java.util.Iterator;

import java.util.Map;

import javax.print.attribute.PrintRequestAttributeSet;

import org.exolab.castor.xml.ValidationException;

import org.gvsig.fmap.raster.layers.FLyrRasterSE;

import org.gvsig.fmap.raster.layers.IRasterLayerActions;

import org.gvsig.fmap.raster.layers.IStatusRaster;

import org.gvsig.fmap.raster.layers.StatusLayerRaster;

import org.gvsig.raster.dataset.CompositeDataset;

import org.gvsig.raster.dataset.IBuffer;

import org.gvsig.raster.dataset.MosaicNotValidException;

import org.gvsig.raster.dataset.MultiRasterDataset;

import org.gvsig.raster.dataset.NotSupportedExtensionException;

import org.gvsig.raster.dataset.io.RasterDriverException;

import org.gvsig.raster.datastruct.ColorTable;

import org.gvsig.raster.datastruct.Extent;

import org.gvsig.raster.datastruct.ViewPortData;

import org.gvsig.raster.grid.GridTransparency;

import org.gvsig.raster.grid.filter.FilterTypeException;

import org.gvsig.raster.grid.filter.RasterFilterList;

import org.gvsig.raster.grid.filter.RasterFilterListManager;

import org.gvsig.raster.grid.filter.enhancement.LinearEnhancementFilter;

import org.gvsig.raster.grid.filter.statistics.TailTrimFilter;

import org.gvsig.remoteClient.wcs.WCSStatus;

import org.gvsig.remoteClient.wms.ICancellable;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.hardcode.gdbms.engine.data.driver.DriverException;

import com.iver.cit.gvsig.exceptions.layers.ConnectionErrorLayerException;

import com.iver.cit.gvsig.exceptions.layers.LoadLayerException;

import com.iver.cit.gvsig.exceptions.layers.UnsupportedVersionLayerException;

import com.iver.cit.gvsig.fmap.ViewPort;

import com.iver.cit.gvsig.fmap.crs.CRSFactory;

import com.iver.cit.gvsig.fmap.drivers.DriverIOException;

import com.iver.cit.gvsig.fmap.drivers.wcs.FMapWCSDriver;

import com.iver.cit.gvsig.fmap.drivers.wcs.FMapWCSDriverFactory;

import com.iver.cit.gvsig.fmap.drivers.wcs.WCSDriverException;

import com.iver.cit.gvsig.fmap.layers.layerOperations.XMLItem;

import com.iver.utiles.StringUtilities;

import com.iver.utiles.XMLEntity;

import com.iver.utiles.swing.threads.Cancellable;

/**

 * Class for the WCS layer.

 *

 * Capa para el WCS.

 *

 * Las capas WCS son tileadas para descargarlas del servidor. Esto quiere decir que

 * est?n formadas por multiples ficheros raster. Por esto la fuente de datos raster (IRasterDatasource)

 * de la capa FLyrWCS es un objeto de tipo CompositeDataset. Este objeto est? compuesto por un array

 * bidimensional de MultiRasterDataset. Cada uno de los MultiRasterDataset corresponde con un tile

 * salvado en disco. Estos MultiRasterDataset se crean cada vez que se repinta ya que en WCS a cada

 * zoom varian los ficheros fuente. La secuencia de creaci?n de un CompositeDataset ser?a la siguiente:

 * <UL>

 * <LI>Se hace una petici?n de dibujado por parte del usuario llamando al m?todo draw de FLyrWCS</LI>

 * <LI>Se tilea la petici?n</LI>

 * <LI>Cada tile se dibuja abriendo una FLyrRaster para ese tile</LI>

 * <LI>Si es el primer dibujado se guarda una referencia en la capa WMS a las propiedades de renderizado, orden de bandas,

 * transparencia, filtros aplicados, ...</LI>

 * <LI>Si no es el primer dibujado se asignan las propiedades de renderizado cuya referencia se guarda en la capa WMS</LI>

 * <LI>Se guarda el MultiRasterDataset de cada tile</LI>

 * <LI>Al acabar todos los tiles creamos un CompositeDataset con los MultiRasterDataset de todos los tiles</LI>

 * <LI>Asignamos a la capa la referencia de las propiedades de renderizado que tenemos almacenadas. De esta forma si hay

 * alguna modificaci?n desde el cuadro de propiedades ser? efectiva sobre los tiles que se dibujan.</LI>

 * </UL>

 *

 * @author jaume - jaume.dominguez@iver.es

 */

public class FLyrWCS extends FLyrRasterSE {

        private FMapWCSDriver wcs = null;

        private URL                                                 host;

        private String                                                coverageName;

        private Rectangle2D                                        fullExtent;

        private String                                                format;

        private String                                                srs;

        private String                                                time;

        private String                                                parameter;

        private Point2D                                                maxRes;

        private Hashtable                                         onlineResources = new Hashtable();

        private WCSStatus                                        wcsStatus = new WCSStatus();

        private int                                                 posX = 0, posY = 0;

        private double                                                 posXWC = 0, posYWC = 0;

        private int                                                 r = 0, g = 0, b = 0;

        private boolean                                         firstLoad = false;

        private VisualStatus                                visualStatus = new VisualStatus();

        private boolean                                         mustTileDraw = false;

        private int                                                 maxTileDrawWidth  = 1023;

        private int                                                        maxTileDrawHeight = 1023;

        //private int                                                 maxTilePrintWidth  = 250;

        //private int                                                        maxTilePrintHeight = 250;

        /**

         * Lista de filtros aplicada en la renderizaci?n

         */

        private RasterFilterList            filterList = null;

        private GridTransparency                        transparency = null;

        private int[]                       renderBands = null;

        private FLyrRasterSE                                layerRaster = null;

        private ArrayList                   filterArguments = null;

        private class MyCancellable implements ICancellable

        {

                private Cancellable original;

                public MyCancellable(Cancellable cancelOriginal)

                {

                        this.original = cancelOriginal;

                }

                public boolean isCanceled() {

                        return original.isCanceled();

                }

                public Object getID() {

                        return this;

                }

        }

        public FLyrWCS(){

                super();

        }

        public FLyrWCS(Map args) throws DriverIOException{

                FMapWCSDriver drv = null;

                String host = (String)args.get("HOST");

                String sCoverage = (String) args.get((String) "COVERAGE");

                try {

                        this.setHost(new URL(host));

                } catch (MalformedURLException e) {

                        //e.printStackTrace();

                        throw new DriverIOException("Malformed host URL, '" + host + "' (" + e.toString() + ").");

                }

                try {

                        drv = this.getDriver();

                } catch (Exception e) {

                        // e.printStackTrace();

                        throw new DriverIOException("Can't get driver to host '" + host + "' (" + e.toString() + ").");

                }

                try{

                        if (!drv.connect(false, null)){

                                throw new DriverIOException("Can't connect to host '" + host + "'.");

                        }

                }catch(Exception e){

                        throw new DriverIOException("Can't connect to host '" + host + "'.");

                }

                WCSLayer wcsNode = drv.getLayer(sCoverage);

                if (wcsNode == null){

                        throw new DriverIOException("The server '" + host + "' doesn't has the coverage '" + sCoverage + "'.");

                }

                try{

                        this.setFullExtent(drv.getFullExtent(sCoverage,

                                        (String) args.get((String) "CRS")));

                        this.setFormat((String) args.get((String) "FORMAT"));

                        this.setParameter("BANDS=" + (String) args.get((String) "BANDS"));

                        this.setSRS((String) args.get((String) "CRS"));

                        this.setName(sCoverage);

                        this.setCoverageName(sCoverage);

                }catch (Exception e){

                        throw new DriverIOException("The server '" + host + "' is not able to load the coverage '" + sCoverage + "'.");

                }

        }

        /**

         * Clase que contiene los datos de visualizaci?n de WCS. Tiene datos que representan al

         * raster en la vista. Este raster puede estar compuesto por tiles por lo que valores

         * como el ancho total o el m?nimo o m?ximo deben ser calculados a partir de todos los

         * tiles visualizados.

         * @author Nacho Brodin (brodin_ign@gva.es)

         */

        private class VisualStatus {

                /**

                 * Ancho y alto de la imagen o del conjunto de tiles si los tiene. Coincide con

                 * el ancho y alto del viewPort

                 */

                private        int                                                        width = 0, height = 0;

                private double                                                minX = 0D, minY = 0D, maxX = 0D, maxY = 0D;

                private int                                                 bandCount = 0;

                private int                                                        dataType = DataBuffer.TYPE_UNDEFINED;

                /**

                 * Ancho y alto total del raster que ser? la suma de todos los tiles.

                 */

                private        int                                                        rasterWidth = 0, rasterHeight = 0;

                private        double                                                rasterMinX = Double.MAX_VALUE, rasterMinY = Double.MAX_VALUE;

                private        double                                                rasterMaxX = 0, rasterMaxY = 0;

                /**

                 * Lista de nombre de fichero que componen toda la visualizaci?n.

                 */

                private String[]                                        fileNames = null;

        }

        /**

         * @deprecated

         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.InfoByPoint#getInfo

         */

        public String queryByPoint(Point p) {

                String data = "<file:"+getName().replaceAll("[^a-zA-Z0-9]","")+">\n";

                ArrayList attr = this.getAttributes();

                data += "  <raster\n";

                data += "    File=\""+getName()+"\"\n";

                for (int i=0; i<attr.size(); i++) {

                        Object [] a = (Object []) attr.get(i);

                        data += "    "+a[0].toString()+"=";

                        if (a[1].toString() instanceof String)

                                data += "\""+a[1].toString()+"\"\n";

                        else

                                data += a[1].toString()+"\n";

                }

                data += "    Point=\""+posX+" , "+posY+"\"\n";

                data += "    Point_WC=\""+posXWC+" , "+posYWC+"\"\n";

                data += "    RGB=\""+r+", "+g+", "+b+"\"\n";

                data += "  />\n";

                data += "</file:"+getName().replaceAll("[^a-zA-Z0-9]","")+">\n";

                System.out.println(data);

                return data;

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.InfoByPoint#getInfo

         */

        public XMLItem[] getInfo(Point point, double tolerance, Cancellable cancel ) throws ReadDriverException {

                return super.getInfo(point, tolerance, cancel);

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#getFullExtent()

         */

        public Rectangle2D getFullExtent() {

                return fullExtent;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#draw(java.awt.image.BufferedImage, java.awt.Graphics2D, com.iver.cit.gvsig.fmap.ViewPort, com.iver.cit.gvsig.fmap.operations.Cancellable, double)

         */

        public void draw(BufferedImage image, Graphics2D g, ViewPort viewPort, Cancellable cancel, double scale) throws ReadDriverException {

                enableStopped();

                // callLegendChanged(null);

                if (isWithinScale(scale)) {

                        Point2D p = viewPort.getOffset();

                        // p will be (0, 0) when drawing a view or other when painting onto

                        // the Layout.

                        visualStatus.width = viewPort.getImageWidth();

                        visualStatus.height = viewPort.getImageHeight();

                        visualStatus.minX = viewPort.getAdjustedExtent().getMinX();

                        visualStatus.minY = viewPort.getAdjustedExtent().getMinY();

                        visualStatus.maxX = viewPort.getAdjustedExtent().getMaxX();

                        visualStatus.maxY = viewPort.getAdjustedExtent().getMaxY();

                        visualStatus.rasterWidth = 0;

                        visualStatus.rasterHeight = 0;

                        visualStatus.rasterMinX = Double.MAX_VALUE;

                        visualStatus.rasterMinY = Double.MAX_VALUE;

                        visualStatus.rasterMaxX = 0;

                        visualStatus.rasterMaxY = 0;

                        visualStatus.fileNames = new String[1];

                        try {

                                if (true) {

                                        if (viewPort.getImageWidth() <= maxTileDrawWidth && viewPort.getImageHeight() <= maxTileDrawHeight) {

                                                drawTile(g, viewPort, cancel, 0, scale);

                                                if (layerRaster == null)

                                                        return;

                                                dataset = layerRaster.getDataSource();

                                                getRender().setLastRenderBuffer(layerRaster.getRender().getLastRenderBuffer());

                                                initializeRasterLayer(null, new IBuffer[][] { { layerRaster.getRender().getLastRenderBuffer() } });

                                        } else {

                                                Rectangle r = new Rectangle((int) p.getX(), (int) p.getY(), viewPort.getImageWidth(), viewPort.getImageHeight());

                                                Tiling tiles = new Tiling(maxTileDrawWidth, maxTileDrawHeight, r);

                                                tiles.setAffineTransform((AffineTransform) viewPort.getAffineTransform().clone());

                                                MultiRasterDataset[][] datasets = new MultiRasterDataset[tiles.getNumRows()][tiles.getNumCols()];

                                                IBuffer[][] buf = new IBuffer[tiles.getNumRows()][tiles.getNumCols()];

                                                visualStatus.fileNames = new String[tiles.getNumTiles()];

                                                for (int tileNr = 0; tileNr < tiles.getNumTiles(); tileNr++) {

                                                        // drawing part

                                                        try {

                                                                ViewPort vp = tiles.getTileViewPort(viewPort, tileNr);

                                                                boolean painted = drawTile(g, vp, cancel, tileNr, scale);

                                                                if (layerRaster != null && painted) {

                                                                        datasets[(int) (tileNr / tiles.getNumCols())][tileNr % tiles.getNumCols()] = (MultiRasterDataset) layerRaster.getDataSource().copy();

                                                                        buf[(int) (tileNr / tiles.getNumCols())][tileNr % tiles.getNumCols()] = layerRaster.getRender().getLastRenderBuffer();

                                                                }

                                                        } catch (NoninvertibleTransformException e) {

                                                                e.printStackTrace();

                                                        }

                                                }

                                                try {

                                                        if (datasets != null && datasets[0][0] != null) {

                                                                dataset = new CompositeDataset(datasets);

                                                                initializeRasterLayer(datasets, buf);

                                                        }

                                                } catch (MosaicNotValidException e) {

                                                        throw new ReadDriverException("No hay continuidad en el mosaico.", e);

                                                } catch (LoadLayerException e) {

                                                        throw new ReadDriverException("Error inicializando la capa.", e);

                                                }

                                        }

                                } else {

                                        drawTile(g, viewPort, cancel, 0, scale);

                                        if (layerRaster == null)

                                                return;

                                        dataset = layerRaster.getDataSource();

                                        getRender().setLastRenderBuffer(layerRaster.getRender().getLastRenderBuffer());

                                        initializeRasterLayer(null, new IBuffer[][] { { layerRaster.getRender().getLastRenderBuffer() } });

                                }

                        } catch (ConnectionErrorLayerException e) {

                                e.printStackTrace();

                        } catch (UnsupportedVersionLayerException e) {

                                e.printStackTrace();

                        } catch (LoadLayerException e) {

                                e.printStackTrace();

                        }

                }

                disableStopped();

                // callLegendChanged(null);

                Runtime r = Runtime.getRuntime();

                long mem = r.totalMemory() - r.freeMemory();

                System.err.println("Memoria total: " + (mem / 1024) +"KB");

        }

        /**

         * Acciones que se realizan despu?s de asignar la fuente de datos a

         * la capa raster.

         *

         * @throws LoadLayerException

         */

        private void initializeRasterLayer(MultiRasterDataset[][] datasets, IBuffer[][] buf) throws LoadLayerException {

                if(this.filterList != null)

                        getRender().setFilterList(filterList);

/*

                if(this.transparency != null)

                        getRender().setLastTransparency(transparency);

*/

                if(this.renderBands != null)

                        getRender().setRenderBands(renderBands);

                if(datasets != null) {

                        String[][] names = new String[datasets.length][datasets[0].length];

                        for (int i = 0; i < datasets.length; i++) {

                                for (int j = 0; j < datasets[i].length; j++) {

                                        if(datasets[i][j] != null)

                                                names[i][j] = datasets[i][j].getDataset(0)[0].getFName();

                                }

                        }

                        super.setLoadParams(names);

                }

                super.init();

                if(buf != null) {

                        int drawablesBandCount = layerRaster.getDataSource().getBands().getDrawableBandsCount();

                        IBuffer buff = null;

                        if(dataset instanceof CompositeDataset)

                                buff = ((CompositeDataset)dataset).generateBuffer(buf, drawablesBandCount);

                        else

                                buff = buf[0][0];

                        getRender().setLastRenderBuffer(buff);

                }

                if (transparency == null)

                        transparency = new GridTransparency(getDataSource().getTransparencyFilesStatus());

                getRender().setLastTransparency(transparency);

        }

        /**

         * This is the method used to draw a tile in a WCS mosaic layer.

         * @param tile Tile number to draw

         * @throws ReadDriverException

         * @return true when a tile has been painted

         */

        private boolean drawTile(Graphics2D g, ViewPort vp, Cancellable cancel, int tile, double scale) throws LoadLayerException, ReadDriverException {

                // Compute the query geometry

                // 1. Check if it is within borders

                Rectangle2D extent = getFullExtent();

                if ((vp.getAdjustedExtent().getMinX() > extent.getMaxX()) ||

                                (vp.getAdjustedExtent().getMinY() > extent.getMaxY()) ||

                                (vp.getAdjustedExtent().getMaxX() < extent.getMinX()) ||

                                (vp.getAdjustedExtent().getMaxY() < extent.getMinY()))

                        return false;

                // 2. Compute extent to be requested.

                Rectangle2D bBox = new Rectangle2D.Double();

                Rectangle2D.intersect(vp.getAdjustedExtent(), extent, bBox);

                // 3. Compute size in pixels

                double scalex = vp.getAffineTransform().getScaleX();

                double scaley = vp.getAffineTransform().getScaleY();

                int wImg = (int) Math.ceil(Math.abs(bBox.getWidth() * scalex) + 1);

                int hImg = (int) Math.ceil(Math.abs(bBox.getHeight() * scaley) + 1);

                Dimension sz = new Dimension(wImg, hImg);

                if ((wImg <= 0) || (hImg <= 0))

                        return false;

                try {

                        sz = new Dimension(wImg, hImg);

                        wcsStatus.setCoveraName( coverageName );

                        wcsStatus.setExtent( bBox );

                        wcsStatus.setFormat( format );

                        wcsStatus.setHeight( hImg );

                        wcsStatus.setWidth( wImg );

                        wcsStatus.setSrs(srs);

                        wcsStatus.setParameters( parameter );

                        wcsStatus.setTime( time );

                        wcsStatus.setOnlineResource((String) onlineResources.get("GetCoverage"));

                        File f = getDriver().getCoverage(wcsStatus, new MyCancellable(cancel));

                        if (f == null)

                                return false;

                        String nameWordFile = f.getPath() + getExtensionWorldFile();

                        com.iver.andami.Utilities.createTemp(nameWordFile, this.getDataWorldFile(bBox, sz));

                        IStatusRaster status = super.getStatus();

                        if(status!=null && firstLoad){

                                try {

                                        status.applyStatus(this);

                                } catch (NotSupportedExtensionException e) {

                                        throw new ReadDriverException("", e);

                                } catch (RasterDriverException e) {

                                        throw new ReadDriverException("", e);

                                } catch (FilterTypeException e) {

                                        throw new ReadDriverException("", e);

                                }

                                firstLoad = false;

                        }

                        ViewPortData vpData = new ViewPortData(

                                vp.getProjection(), new Extent(bBox), sz );

                        vpData.setMat(vp.getAffineTransform());

                        String filePath = f.getAbsolutePath();

                        visualStatus.fileNames[tile] = filePath;

                        try {

                                rasterProcess(filePath, g, vp, scale, cancel);

                        } catch (FilterTypeException e) {

                        }

//                        this.getRender().draw(g, vpData);

//                        rasterProcess(g, vpData, f);

//                } catch (ValidationException e) {

//                        UnknownResponseFormatExceptionType type =

//                                new UnknownResponseFormatExceptionType();

//                        type.setLayerName(getName());

//                        try {

//                                type.setDriverName(getDriver().getName());

//                        } catch (Exception e1) {

//                                e1.printStackTrace();

//                        }

//                        type.setFormat(format);

//                        type.setHost(host);

//                        type.setProtocol("WCS");

//                        ReadDriverException exception = new ReadDriverException("unknown_response_format",type);

//                        throw exception;

//        azabala                throw new DriverException(PluginServices.getText(this, "unknown_response_format"), e);

//                }

//                catch (UnsupportedVersionLayerException e) {

//                        UnsuportedProtocolVersionExceptionType type =

//                                new UnsuportedProtocolVersionExceptionType();

//                        type.setLayerName(getName());

//                        try {

//                                type.setDriverName(getDriver().getName());

//                        } catch (Exception ex){

//                        }

//                        type.setUrl(host);

//                        throw new ReadDriverException(PluginServices.getText(this, "version_conflict"), e, type);

//        azabala                throw new DriverException(PluginServices.getText(this, "version_conflict"), e);

                } catch (IOException e) {

//                        ConnectionErrorExceptionType type = new ConnectionErrorExceptionType();

//                        type.setLayerName(getName());

//                        try {

//                                type.setDriverName(getDriver().getName());

//                        } catch (Exception e1) {

//                        }

//                        type.setHost(host);

                        throw new ConnectionErrorLayerException(getName(),e);

                }

//                catch (WCSLayerException e) {

////azabala: la capturamos y la convertimos en DriverException

//                        WCSDriverExceptionType type = new WCSDriverExceptionType();

//                        type.setLayerName(getName());

//                        try {

//                                type.setDriverName(getDriver().getName());

//                        } catch (Exception e1) {

//                        }

//                        type.setWcsStatus(wcsStatus);

//                        this.setVisible(false);

//                        throw new WDriverException("Error WCS", e,  type);

//

////            JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(), e.getMessage());

//

//        }//

                catch (WCSDriverException e) {

                        throw new LoadLayerException(getName(),e);

                } catch (IllegalStateException e) {

                        throw new LoadLayerException(getName(),e);

                }

                return true;

        }

        /**

         * Devuelve el FMapWMSDriver.

         *

         * @return FMapWMSDriver

         *

         * @throws IllegalStateException

         * @throws ValidationException

         * @throws UnsupportedVersionLayerException

         * @throws IOException

         */

        private FMapWCSDriver getDriver() throws IllegalStateException, IOException {

                if (wcs == null) {

                        wcs = FMapWCSDriverFactory.getFMapDriverForURL(host);

                }

                return wcs;

        }

        /**

         * Calcula el contenido del fichero de georreferenciaci?n de una imagen.

         * @param bBox Tama?o y posici?n de la imagen (en coordenadas de usuario)

         * @param sz Tama?o de la imagen en pixeles.

         * @return el 'WorldFile', como String.

         * @throws IOException

         */

        public String getDataWorldFile(Rectangle2D bBox, Dimension sz) throws IOException {

                StringBuffer data = new StringBuffer();

                data.append((bBox.getMaxX() - bBox.getMinX())/(sz.getWidth() - 1)+"\n");

                data.append("0.0\n");

                data.append("0.0\n");

                data.append("-"+(bBox.getMaxY() - bBox.getMinY())/(sz.getHeight() - 1)+"\n");

                data.append(""+bBox.getMinX()+"\n");

                data.append(""+bBox.getMaxY()+"\n");

                return data.toString();

        }

        /**

         * Carga y dibuja el raster usando la librer?a

         * @param filePath Ruta al fichero en disco

         * @param g Graphics2D

         * @param vp ViewPort

         * @param scale Escala para el draw

         * @param cancel Cancelaci?n para el draw

         * @throws ReadDriverException

         * @throws LoadLayerException

         */

        private void rasterProcess(String filePath, Graphics2D g, ViewPort vp, double scale, Cancellable cancel) throws ReadDriverException, LoadLayerException, FilterTypeException {

                //Cerramos el dataset asociado a la capa si est? abierto.

                if(layerRaster != null) {

                        layerRaster.setRemoveRasterFlag(true);

                        layerRaster.getDataSource().close();

                }

                //Cargamos el dataset con el raster de disco.

                layerRaster = FLyrRasterSE.createLayer("", filePath, vp.getProjection());

                layerRaster.getRender().setBufferFactory(layerRaster.getBufferFactory());

                if(visualStatus.dataType == IBuffer.TYPE_UNDEFINED && layerRaster.getDataType() != null)

                        visualStatus.dataType = layerRaster.getDataType()[0];

                if(visualStatus.bandCount == 0 && layerRaster.getBandCount() != 0)

                        visualStatus.bandCount = layerRaster.getBandCount();

                if (getLegend() == null)

                        lastLegend = layerRaster.getLegend();

                //En caso de cargar un proyecto con XMLEntity se crean los filtros

                if(filterArguments != null) {

                        RasterFilterList fl = new RasterFilterList();

                        fl.addEnvParam("IStatistics", layerRaster.getDataSource().getStatistics());

                        fl.addEnvParam("MultiRasterDataset", layerRaster.getDataSource());

                        fl.setInitDataType(layerRaster.getDataType()[0]);

                        RasterFilterListManager filterListManager = new RasterFilterListManager(fl);

                        filterListManager.createFilterListFromStrings(filterArguments);

                        if (fl.move(TailTrimFilter.class, 0))

                                fl.move(LinearEnhancementFilter.class, 1);

                        else

                                fl.move(LinearEnhancementFilter.class, 0);

                        fl.controlTypes();

                        filterArguments = null;

                        filterList = fl;

                }

                //Como el raster se carga a cada zoom el render se crea nuevamente y la lista de

                //filtros siempre estar? vacia a cada visualizaci?n. Para evitarlo tenemos que

                //guardar la lista de filtro aplicada en la visualizaci?n anterior.

                if (filterList != null)

                        layerRaster.getRender().setFilterList(filterList);

                if (transparency == null)

                        transparency = layerRaster.getRender().getLastTransparency();

                if (transparency != null)

                        layerRaster.getRender().setLastTransparency(transparency);

                if (renderBands != null)

                        layerRaster.getRender().setRenderBands(renderBands);

                //Dibujamos

                layerRaster.draw(null, g, vp, cancel, scale);

                //La primera vez asignamos la lista de filtros asociada al renderizador. Guardamos una referencia

                //en esta clase para que a cada zoom no se pierda.

                if (filterList == null)

                        filterList = layerRaster.getRender().getFilterList();

                if (renderBands == null)

                        renderBands = layerRaster.getRender().getRenderBands();

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.FLyrDefault#cloneLayer()

         */

        public FLayer cloneLayer() throws Exception {

                Object par = null;

                if (dataset instanceof CompositeDataset)

                        par = ((CompositeDataset) dataset).getFileNames();

                else

                        if (layerRaster != null)

                                par = layerRaster.getLoadParams();

                FLyrRasterSE newLayer = FLyrRasterSE.createLayer(this.getName(), par, this.getProjection());

                ArrayList filters = getRender().getFilterList().getStatusCloned();

                newLayer.getRender().getFilterList().setStatus(filters);

                return newLayer;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.fmap.raster.IRasterRendering#getRenderFilterList()

         */

        public RasterFilterList getRenderFilterList(){

                return (filterList != null) ? filterList : getRender().getFilterList();

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.hierarchy.IRasterRendering#setRenderFilterList(org.gvsig.raster.grid.filter.RasterFilterList)

         */

        public void setRenderFilterList(RasterFilterList filterList) {

                this.filterList = filterList;

                super.getRender().setFilterList(filterList);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.fmap.raster.IRasterRendering#getRenderTransparency()

         */

        public GridTransparency getRenderTransparency() {

                return getRender().getLastTransparency();

//                return (transparency != null) ? transparency : getRender().getLastTransparency();

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.hierarchy.IRasterRendering#getRenderBands()

         */

        public int[] getRenderBands() {

                return (renderBands != null) ? renderBands : getRender().getRenderBands();

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.hierarchy.IRasterRendering#setRenderBands(int[])

         */

        public void setRenderBands(int[] renderBands) {

                this.renderBands = renderBands;

                getRender().setRenderBands(renderBands);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.fmap.raster.layers.FLyrRasterSE#print(java.awt.Graphics2D, com.iver.cit.gvsig.fmap.ViewPort, com.iver.utiles.swing.threads.Cancellable, double, javax.print.attribute.PrintRequestAttributeSet)

         */

        public void print(Graphics2D g, ViewPort viewPort, Cancellable cancel, double scale, PrintRequestAttributeSet properties) throws ReadDriverException {

                if (isVisible() && isWithinScale(scale)){

                        draw(null, g, viewPort, cancel, scale);

                }

        }

        /**

         * Returns the XMLEntity containing the necessary info for reproduce

         * the layer.

         *

         * Devuelve el XMLEntity con la informaci?n necesaria para reproducir

         * la capa.

         *

         * @return XMLEntity.

         * @throws XMLException

         */

        public XMLEntity getXMLEntity() throws XMLException {

                XMLEntity xml = super.getXMLEntity();

                xml.putProperty("wcs.host", getHost());

                xml.putProperty("wcs.fullExtent", StringUtilities.rect2String( fullExtent ));

                xml.putProperty("wcs.layerQuery", coverageName );

                xml.putProperty("wcs.format", format );

                xml.putProperty("wcs.srs", srs );

                xml.putProperty("wcs.time", time );

                xml.putProperty("wcs.parameter", parameter );

                xml.putProperty("wcs.coverageName", coverageName );

                xml.putProperty("wcs.maxResX", maxRes.getX());

                xml.putProperty("wcs.maxResY", maxRes.getY());

                Iterator it = onlineResources.keySet().iterator();

                String strOnlines = "";

                while (it.hasNext()) {

                        String key = (String) it.next();

                        String value = (String) onlineResources.get(key);

                        strOnlines += key+"~##SEP2##~"+value;

                        if (it.hasNext())

                                strOnlines += "~##SEP1##~";

                }

                xml.putProperty("onlineResources", strOnlines);

                IStatusRaster status = super.getStatus();

                if (status!=null)

                        status.getXMLEntity(xml, true, this);

                else{

                        status = new StatusLayerRaster();

                        status.getXMLEntity(xml, true, this);

                }

                return xml;

        }

        /**

         * Reproduces the layer from an XMLEntity.

         *

         * A partir del XMLEntity reproduce la capa.

         *

                * @param xml XMLEntity

         *

         * @throws XMLException

         * @throws DriverException

         * @throws DriverIOException

         */

        public void setXMLEntity(XMLEntity xml) throws XMLException {

                super.setXMLEntity(xml);

                // host

                try {

                        host = new URL(xml.getStringProperty("wcs.host"));

                } catch (MalformedURLException e) {

                        throw new XMLException(e);

                }

                // full extent

                fullExtent = StringUtilities.string2Rect(xml.getStringProperty("wcs.fullExtent"));

                // coverageQuery

                coverageName = xml.getStringProperty("wcs.layerQuery");

                // format

                format = xml.getStringProperty("wcs.format");

                // srs

                srs = xml.getStringProperty("wcs.srs");

                // time

                time = xml.getStringProperty("wcs.time");

                // parameter

                parameter = xml.getStringProperty("wcs.parameter");

                // coverage name

                coverageName = xml.getStringProperty("wcs.coverageName");

                // max resolution

                if (xml.contains("wcs.maxRes"))

                        maxRes = new Point2D.Double(xml.getDoubleProperty("wcs.maxRes"), xml.getDoubleProperty("wcs.maxRes"));

                else if (xml.contains("wcs.maxResX") && xml.contains("wcs.maxResY"))

                        maxRes = new Point2D.Double(xml.getDoubleProperty("wcs.maxResX"), xml.getDoubleProperty("wcs.maxResY"));

                // OnlineResources

                                if (xml.contains("onlineResources")) {

                                        String[] operations = xml.getStringProperty("onlineResources").split("~##SEP1##~");

                                        for (int i = 0; i < operations.length; i++) {

                                String[] resources = operations[i].split("~##SEP2##~");

                                if (resources.length==2 && resources[1]!="")

                                        onlineResources.put(resources[0], resources[1]);

                        }

                                }

                String claseStr = null;

                if (xml.contains("raster.class")) {

                        claseStr = xml.getStringProperty("raster.class");

                }

                IStatusRaster status = super.getStatus();

                if (status!=null)

                        status.setXMLEntity(xml, this);

                else {

                        //Cuando cargamos un proyecto

                        if(claseStr!=null && !claseStr.equals("")){

                                try{

                                        Class clase = LayerFactory.getLayerClassForLayerClassName(claseStr);

                                        Constructor constr = clase.getConstructor(null);

                                        status = (IStatusRaster)constr.newInstance(null);

                                        if(status != null) {

                                                ((StatusLayerRaster)status).setNameClass(claseStr);