Application: gvSIG desktop

/*

 * Created on 9-ago-2006

 *

 * To change the template for this generated file go to

 * Window>Preferences>Java>Code Generation>Code and Comments

 */

/* 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.

 */

package org.gvsig.raster.dataset;

import junit.framework.TestCase;

import org.gvsig.raster.RasterLibrary;

import org.gvsig.raster.buffer.BufferFactory;

/**

 * Test del uso de la funci?n readBlock de MrSID. Cargar? un dataset del formato mrsid y recorrer? todo

 * el raster con la llamada readBlock. El resultado de los datos leidos con esta llamada ser?n 

 * comparados a los leidos con setAreaOfInterest

 * 

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

 *

 */

public class TestReadBlockMrSID extends TestCase {

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

        private String path1 = baseDir + "q101866.sid";

        private RasterDataset f1 = null;

        static {

                RasterLibrary.wakeUp();

        }

        public void start() {

                this.setUp();

                this.testStack();

        }

        public void setUp() {

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

                try {

                        f1 = RasterDataset.open(null, path1);

                } catch (NotSupportedExtensionException e1) {

                        e1.printStackTrace();

                } catch (RasterDriverException e1) {

                        e1.printStackTrace();

                }

        }

        public void testStack() {

                BufferFactory bf = new BufferFactory(f1);

                bf.setAllDrawableBands();

                bf.setAreaOfInterest(f1.getExtent().getMin().getX(), f1.getExtent().getMax().getY(), f1.getExtent().width(), f1.getExtent().height());

                IBuffer buf1 = bf.getRasterBuf();

                int block = 100;

                int nblocks = (int)Math.ceil(f1.getHeight() / block);

                try {

                        int line = 0;

                        int initBand = 0;

                        int column = 0;

                        for (int i = 0; i < nblocks; i++) {

                                byte[][][] buf = (byte[][][])f1.readBlock(i * block, block);

                                initBand = i * block;

                                for (int band = 0; band < buf.length; band++) {

                                        line = initBand;

                                        for (int row = 0; row < buf[band].length; row++) {

                                                column = 0;

                                                for (int col = 0; col < buf[band][row].length; col++) {

                                                        //try {

                                                        assertEquals(buf[band][row][col], buf1.getElemByte(line, column, band));

                                                        /*} catch (AssertionFailedError e) {

                                                                System.out.println(band + " " + line + " " + column);

                                                        }*/

                                                        column ++;

                                                }

                                                line ++;

                                        }

                                }

                        }

                } catch (InvalidSetViewException e) {

                        e.printStackTrace();

                } catch (FileNotOpenException e) {

                        e.printStackTrace();

                } catch (RasterDriverException e) {

                        e.printStackTrace();

                }        

        }

}