| 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.raster.buffer;

import junit.framework.TestCase;

import org.gvsig.raster.RasterLibrary;

import org.gvsig.raster.buffer.BufferFactory;

import org.gvsig.raster.dataset.IBuffer;

import org.gvsig.raster.dataset.NotSupportedExtensionException;

import org.gvsig.raster.dataset.RasterDataset;

import org.gvsig.raster.dataset.RasterDriverException;

/**

 * Este test prueba el acceso a datos a traves de un DataSource con 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 3x3 y compara que los valores

 * leidos sean correctos.

 * 

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

 *

 */

public class TDSIntBufferGdal extends TestCase{

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

        private String path = baseDir + "miniRaster25x24.tif";

        private RasterDataset f = null;        

        private BufferFactory ds = null;

        public void start(){

                this.setUp();

                this.testStack();

        }

        public void setUp() {

                System.err.println("TDSIntBufferGdal running...");

                //System.out.println("TestDataSource (Pixel Coord) Buffer [Gdal] running...");

        }

        static{

                RasterLibrary.wakeUp();

        }

        public void testStack(){

                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(0, 0, 25, 24, 5, 5);

                dataTest1();

                //print();

                ds.setAreaOfInterest(5, 5, 15, 15, 3, 3);

                dataTest2();

                //print();

        }

        private void dataTest2(){

                IBuffer raster = ds.getRasterBuf();

                //Upper Left

                assertEquals((int)(raster.getElemByte(0, 0, 0) & 0xff), 61);

                assertEquals((int)(raster.getElemByte(0, 0, 1) & 0xff), 66);

                assertEquals((int)(raster.getElemByte(0, 0, 2) & 0xff), 59);

                //Upper Right

                assertEquals((int)(raster.getElemByte(0, 2, 0) & 0xff), 91);

                assertEquals((int)(raster.getElemByte(0, 2, 1) & 0xff), 101);

                assertEquals((int)(raster.getElemByte(0, 2, 2) & 0xff), 77);

                //Lower Left

                assertEquals((int)(raster.getElemByte(2, 0, 0) & 0xff), 112);

                assertEquals((int)(raster.getElemByte(2, 0, 1) & 0xff), 126);

                assertEquals((int)(raster.getElemByte(2, 0, 2) & 0xff), 103);

                //Lower Right

                assertEquals((int)(raster.getElemByte(2, 2, 0) & 0xff), 178);

                assertEquals((int)(raster.getElemByte(2, 2, 1) & 0xff), 187);

                assertEquals((int)(raster.getElemByte(2, 2, 2) & 0xff), 184);

        }

        private void dataTest1(){

                IBuffer raster = ds.getRasterBuf();

                //Upper Left

                assertEquals((int)(raster.getElemByte(0, 0, 0) & 0xff), 58);

                assertEquals((int)(raster.getElemByte(0, 0, 1) & 0xff), 86);

                assertEquals((int)(raster.getElemByte(0, 0, 2) & 0xff), 37);

                //Upper Right

                assertEquals((int)(raster.getElemByte(0, 4, 0) & 0xff), 30);

                assertEquals((int)(raster.getElemByte(0, 4, 1) & 0xff), 47);

                assertEquals((int)(raster.getElemByte(0, 4, 2) & 0xff), 11);

                //Lower Left

                assertEquals((int)(raster.getElemByte(4, 0, 0) & 0xff), 164);

                assertEquals((int)(raster.getElemByte(4, 0, 1) & 0xff), 158);

                assertEquals((int)(raster.getElemByte(4, 0, 2) & 0xff), 144);

                //Lower Right

                assertEquals((int)(raster.getElemByte(4, 4, 0) & 0xff), 135);

                assertEquals((int)(raster.getElemByte(4, 4, 1) & 0xff), 126);

                assertEquals((int)(raster.getElemByte(4, 4, 2) & 0xff), 127);

                assertEquals((int)(raster.getElemByte(1, 1, 0) & 0xff), 61);

                assertEquals((int)(raster.getElemByte(1, 1, 1) & 0xff), 66);

                assertEquals((int)(raster.getElemByte(1, 1, 2) & 0xff), 59);

                assertEquals((int)(raster.getElemByte(2, 2, 0) & 0xff), 81);

                assertEquals((int)(raster.getElemByte(2, 2, 1) & 0xff), 91);

                assertEquals((int)(raster.getElemByte(2, 2, 2) & 0xff), 67);

                assertEquals((int)(raster.getElemByte(3, 3, 0) & 0xff), 178);

                assertEquals((int)(raster.getElemByte(3, 3, 1) & 0xff), 187);

                assertEquals((int)(raster.getElemByte(3, 3, 2) & 0xff), 184);

                assertEquals((int)(raster.getElemByte(1, 3, 0) & 0xff), 91);

                assertEquals((int)(raster.getElemByte(1, 3, 1) & 0xff), 101);

                assertEquals((int)(raster.getElemByte(1, 3, 2) & 0xff), 77);

                assertEquals((int)(raster.getElemByte(3, 1, 0) & 0xff), 112);

                assertEquals((int)(raster.getElemByte(3, 1, 1) & 0xff), 126);

                assertEquals((int)(raster.getElemByte(3, 1, 2) & 0xff), 103);

        }

        /**

         * Imprime todos los pixels de la fuente de datos en RGB

         */

        private void print(){

                IBuffer raster = ds.getRasterBuf();

                for(int line = 0; line < raster.getHeight(); line++){

                        for(int col = 0; col < raster.getWidth(); col++)

                                System.out.print("(" + (int)(raster.getElemByte(line, col, 0) & 0xff) + " " + (int)(raster.getElemByte(line, col, 1) & 0xff) + " " + (int)(raster.getElemByte(line, col, 2) & 0xff) + ")");

                        System.out.println();

                }

        }

}