Application: gvSIG desktop

/* 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.dataaccess;

import junit.framework.TestCase;

import org.gvsig.raster.dataaccess.DataSource;

import org.gvsig.raster.driver.IBuffer;

import org.gvsig.raster.driver.NotSupportedExtensionException;

import org.gvsig.raster.driver.RasterDataset;

import org.gvsig.raster.driver.RasterDriverException;

import org.gvsig.raster.shared.RasterLibrary;

/**

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

 * para un ECW con coordenadas reales. 

 * 

 * 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.

 * Se lee un ?rea m?s grande que el extent completo del raster para comprobar que el ajuste

 * al extent lo hace correctamente.

 * 

 * 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 TDSDoubleAdjustToExtentBufferEcw extends TestCase{

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

        private String path = baseDir + "miniraster30x30.jp2";        

        private RasterDataset f = null;        

        private DataSource ds = null;

        public void start(){

                this.setUp();

                this.testStack();

        }

        public void setUp() {

                System.err.print("TDSDoubleAdjustToExtentBufferEcw running...");

                //System.out.println("TestDataSource (Real Coord) Adjust To Extent With Buffer [Ecw] running...");

        }

        static{

                RasterLibrary.wakeUp();

        }

        public void testStack(){

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

                try {

                        f = RasterDataset.openFile(null, path);

                } catch (NotSupportedExtensionException e) {

                        return;

                } catch (RasterDriverException e) {

                        return;

                }

                ds = new DataSource(f);

                ds.addDrawableBands(drawableBands);

                //Se selecciona un ?rea mayor que el extent para probar que lo ajusta a este 

                ds.setAreaOfInterest(645860.0, 4923870.0, 645986.0, 4923744.0, 10, 10, true);

                //print();

                dataTest1();

                ds.setAreaOfInterest(645860.0, 4923870.0, 645986.0, 4923744.0, 2, 2, true);

                dataTest2();

                //print();

        }

        private void dataTest2(){

                IBuffer raster = ds.getRasterBuf();

                //Upper Left

                assertEquals((int)(raster.getElemByte(0, 0, 0) & 0xff), 43);

                assertEquals((int)(raster.getElemByte(0, 0, 1) & 0xff), 53);

                assertEquals((int)(raster.getElemByte(0, 0, 2) & 0xff), 26);

                //Upper Right

                assertEquals((int)(raster.getElemByte(0, 1, 0) & 0xff), 109);

                assertEquals((int)(raster.getElemByte(0, 1, 1) & 0xff), 111);

                assertEquals((int)(raster.getElemByte(0, 1, 2) & 0xff), 97);

                //Lower Left

                assertEquals((int)(raster.getElemByte(1, 0, 0) & 0xff), 159);

                assertEquals((int)(raster.getElemByte(1, 0, 1) & 0xff), 168);

                assertEquals((int)(raster.getElemByte(1, 0, 2) & 0xff), 146);

                //Lower Right

                assertEquals((int)(raster.getElemByte(1, 1, 0) & 0xff), 18);

                assertEquals((int)(raster.getElemByte(1, 1, 1) & 0xff), 39);

                assertEquals((int)(raster.getElemByte(1, 1, 2) & 0xff), 41);

        }

        private void dataTest1(){

                IBuffer raster = ds.getRasterBuf();

                //Upper Left

                assertEquals((int)(raster.getElemByte(0, 0, 0) & 0xff), 43);

                assertEquals((int)(raster.getElemByte(0, 0, 1) & 0xff), 53);

                assertEquals((int)(raster.getElemByte(0, 0, 2) & 0xff), 26);

                //Upper Right

                assertEquals((int)(raster.getElemByte(0, 9, 0) & 0xff), 144);

                assertEquals((int)(raster.getElemByte(0, 9, 1) & 0xff), 157);

                assertEquals((int)(raster.getElemByte(0, 9, 2) & 0xff), 141);

                //Lower Left

                assertEquals((int)(raster.getElemByte(9, 0, 0) & 0xff), 113);

                assertEquals((int)(raster.getElemByte(9, 0, 1) & 0xff), 130);

                assertEquals((int)(raster.getElemByte(9, 0, 2) & 0xff), 111);

                //Lower Right

                assertEquals((int)(raster.getElemByte(9, 9, 0) & 0xff), 28);

                assertEquals((int)(raster.getElemByte(9, 9, 1) & 0xff), 43);

                assertEquals((int)(raster.getElemByte(9, 9, 2) & 0xff), 24);

                assertEquals((int)(raster.getElemByte(6, 6, 0) & 0xff), 54);

                assertEquals((int)(raster.getElemByte(6, 6, 1) & 0xff), 71);

                assertEquals((int)(raster.getElemByte(6, 6, 2) & 0xff), 46);

                assertEquals((int)(raster.getElemByte(6, 9, 0) & 0xff), 91);

                assertEquals((int)(raster.getElemByte(6, 9, 1) & 0xff), 94);

                assertEquals((int)(raster.getElemByte(6, 9, 2) & 0xff), 53);

                assertEquals((int)(raster.getElemByte(9, 6, 0) & 0xff), 166);

                assertEquals((int)(raster.getElemByte(9, 6, 1) & 0xff), 160);

                assertEquals((int)(raster.getElemByte(9, 6, 2) & 0xff), 131);

                assertEquals((int)(raster.getElemByte(2, 3, 0) & 0xff), 89);

                assertEquals((int)(raster.getElemByte(2, 3, 1) & 0xff), 105);

                assertEquals((int)(raster.getElemByte(2, 3, 2) & 0xff), 79);

                assertEquals((int)(raster.getElemByte(3, 1, 0) & 0xff), 71);

                assertEquals((int)(raster.getElemByte(3, 1, 1) & 0xff), 73);

                assertEquals((int)(raster.getElemByte(3, 1, 2) & 0xff), 61);

                assertEquals((int)(raster.getElemByte(0, 2, 0) & 0xff), 87);

                assertEquals((int)(raster.getElemByte(0, 2, 1) & 0xff), 109);

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

        }

        /**

         * 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();

                }

        }

}