| gvSIG desktop 1

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

 *

 * Copyright (C) 2007 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.

 */

package org.gvsig.imagenavigator;

import java.awt.Dimension;

import java.awt.Graphics2D;

import java.awt.geom.AffineTransform;

import java.awt.geom.Dimension2D;

import javax.swing.JFrame;

import org.gvsig.gui.beans.imagenavigator.IClientImageNavigator;

import org.gvsig.gui.beans.imagenavigator.ImageNavigator;

import org.gvsig.raster.RasterLibrary;

import org.gvsig.raster.buffer.BufferFactory;

import org.gvsig.raster.dataset.NotSupportedExtensionException;

import org.gvsig.raster.dataset.RasterDataset;

import org.gvsig.raster.dataset.RasterDriverException;

import org.gvsig.raster.grid.render.Rendering;

import org.gvsig.raster.shared.Extent;

import org.gvsig.raster.shared.ViewPortData;

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

/**

 * Este test prueba el acceso a datos a traves de un DataSource sin resampleo

 * para un raster leido con Gdal con coordenadas pixel. 

 * 

 * Lee el raster completo y comprueba que los datos leidos sean correctos 

 * comparando los valores de las cuatro esquinas y algunos valores dentro de la imagen.

 * Despu?s hace selecciona un ?rea dentro de la imagen de 2x2 y compara que los valores

 * leidos sean correctos.

 * 

 * @author Nacho Brodin (nachobrodin@gmail.com)

 *

 */

public class TestImageNavigator implements IClientImageNavigator {

        private String baseDir = "./test-images/";

        private String path = baseDir + "03AUG23153350-M2AS-000000122423_01_P001-BROWSE.jpg";        

        private RasterDataset f = null;        

        private BufferFactory ds = null;

        private Rendering rendering = null;

        private Extent extent2 = null;

        private JFrame jFrame = null;

        private ImageNavigator imageNavigator = null;

        static {

                RasterLibrary.wakeUp();

        }

        public TestImageNavigator() {

                int[] drawableBands = {0, 1, 2};

                try {

                        f = RasterDataset.open(null, path);

                } catch (NotSupportedExtensionException e) {

                        e.printStackTrace();

                        return;

                } catch (RasterDriverException e) {

                        e.printStackTrace();

                        return;

                }

                ds = new BufferFactory(f);

                ds.addDrawableBands(drawableBands);

                //ds.setAreaOfInterest(645817.0, 4923851.0, 645853.0, 4923815.0, 100, 100, true);

                rendering = new Rendering(ds);

                extent2 = ds.getExtent();

//                a.draw(g, vp)

                initialize();

        }

        private void initialize() {

                jFrame = new JFrame();

                jFrame.setSize(new Dimension(600, 600));

                jFrame.setContentPane(getImageNavigator());

                jFrame.show();

                getImageNavigator().setViewDimensions(extent2.getMin().getX(), extent2.getMax().getY(), extent2.getMax().getX(), extent2.getMin().getY());

                getImageNavigator().setZoom(1.0/ds.getXCellSize());

                getImageNavigator().updateBuffer();

                jFrame.setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        }

        private ImageNavigator getImageNavigator() {

                if (imageNavigator == null) {

                        imageNavigator = new ImageNavigator(this);

                }

                return imageNavigator;

        }

        public static void main(String[] args) {

                new TestImageNavigator();

        }

        public void drawImage(Graphics2D g, double x1, double y1, double x2, double y2, double zoom, int width, int height) {

                if ((rendering == null) || ((x2 - x1) == 0.0) || ((y2 - y1) == 0.0))

                        return;

                ViewPort vp = new ViewPort(null);

                Dimension2D dimension = new Dimension(width, height);

                Extent extent = new Extent(x1, y1, x2, y2);

                ViewPortData vp2 = new ViewPortData(vp.getProjection(), extent, dimension);

                vp2.setMat(new AffineTransform(zoom, 0.0, 0.0, zoom, -x1*zoom, -y1*zoom));

                rendering.draw(g, vp2);

        }

}