Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

*

* 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., 51 Franklin Street, Fifth Floor, Boston,

* MA  02110-1301, USA.

*

*/

package org.gvsig.raster.tools.app.basic.raster.process;

import java.net.URI;

import org.gvsig.andami.PluginServices;

import org.gvsig.fmap.dal.coverage.RasterLocator;

import org.gvsig.fmap.dal.coverage.exception.OverviewException;

import org.gvsig.fmap.dal.coverage.process.BaseIncrementableTask;

import org.gvsig.fmap.dal.coverage.process.overview.OverviewBuilder;

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

import org.gvsig.raster.mainplugin.config.Configuration;

/**

 * Proceso para la generaci?n de overviews.

 *

 * 10/12/2007

 * @author Nacho Brodin nachobrodin@gmail.com

 */

public class OverviewsProcess extends RasterProcess implements BaseIncrementableTask {

        private FLyrRaster   rasterSE      = null;

        private int          value         = 0;

        private int          resamplingAlg = OverviewBuilder.AVERAGE;

        private int[]        overviews     = new int[] { 2, 4, 8, 16 };

        private String       builder       = "GDAL";

        /*

         * (non-Javadoc)

         * @see org.gvsig.rastertools.RasterProcess#init()

         */

        public void init() {

                rasterSE = getLayerParam("layer");

                builder = getStringParam("builder") != null ? getStringParam("builder") : builder;

                int overviewsRate = 2;

                int nOverviews = 4;

                overviewsRate = Configuration.getValue("overviews_rate", new Integer(overviewsRate)).intValue();

                nOverviews = Configuration.getValue("overviews_number", new Integer(nOverviews)).intValue();

                resamplingAlg = Configuration.getValue("overviews_resampling_algorithm", new Integer(resamplingAlg)).intValue();

                // Leemos de la configuraci?n los valores de algoritmo a usar,

                // n?mero de overviews a generar y proporci?n de la primera overview

                overviews = new int[nOverviews];

                overviews[0] = overviewsRate;

                for (int i = 1; i < nOverviews; i++)

                        overviews[i] = overviewsRate * overviews[i - 1];

        }

        /**

         * M?todo donde se ejecutar? el Thread, aqu? se generaran las

         * overviews

         * @throws ProcessException

         */

        public void process() throws ProcessException {

                insertLineLog(PluginServices.getText(this, "overviews_generating"));

                OverviewBuilder overviewBuilder = RasterLocator.getManager().getOverviewBuilder(builder);

                overviewBuilder.setIncrementListener(this);

                try {

                        URI[] uri = rasterSE.getDataStore().getURIByProvider();

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

                                insertLineLog(" Dataset: " + i);

                                overviewBuilder.buildOverviews(resamplingAlg, uri[i].getPath(), overviews);

                        }

                        if (externalActions != null)

                                externalActions.end(rasterSE);

                } catch (OverviewException e) {

                        if (incrementableTask != null)

                                incrementableTask.hideWindow();

                        throw new ProcessException("error_write_overviews", e);

                }

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getPercent()

         */

        public int getPercent() {

                return value;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.addo.IOverviewIncrement#setPercent(int)

         */

        public void setPercent(int value) {

                this.value = value;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getTitle()

         */

        public String getTitle() {

                return PluginServices.getText(this, "incremento_overview");

        }

        /*

         * (non-Javadoc)

         * @see java.lang.Object#finalize()

         */

        protected void finalize() throws Throwable {

                rasterSE           = null;

                overviews           = null;

                super.finalize();

        }

}