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/* 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.NotSupportedExtensionException;

import org.gvsig.raster.dataset.RasterDataset;

import org.gvsig.raster.dataset.RasterDriverException;

import org.gvsig.raster.dataset.RasterMultiDataset;

import org.gvsig.raster.util.Histogram;

import org.gvsig.raster.util.HistogramException;

/**

 * Test a un histograma de una imagen de 3 bandas de un byte por dato leido con gdal. 

 * El test comprueba valores a lo largo de todo el histograma

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

 *

 */

public class TestGdalByteMultiBandHistogram extends TestCase{

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

        private String path1 = baseDir + "band1-30x28byte.tif";

        private String path2 = baseDir + "band2-30x28byte.tif";

        private String path3 = baseDir + "band3-30x28byte.tif";

        private RasterDataset f1 = null, f2 = null, f3 = null;        

        private BufferFactory ds = null;

        public void start(){

                this.setUp();

                this.testStack();

        }

        public void setUp() {

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

        }

        static{

                RasterLibrary.wakeUp();

        }

        public void testStack(){

                try {

                        f1 = RasterDataset.open(null, path1);

                        f2 = RasterDataset.open(null, path2);

                        f3 = RasterDataset.open(null, path3);

                } catch (NotSupportedExtensionException e) {

                        return;

                } catch (RasterDriverException e) {

                        return;

                }

                ds = new BufferFactory(f1);

                ds.addFile(f2);

                ds.addFile(f3);

                RasterMultiDataset rmd = ds.getGeoRasterMultiFile();

                Histogram histogram = null;

                try {

                        histogram = rmd.getHistogram();

                } catch (HistogramException e) {

                        e.printStackTrace();

                } 

                //print(histogram);

                resultTestR(histogram);

                resultTestG(histogram);

                resultTestB(histogram);

        }

        private void resultTestR(Histogram histogram){

                assertEquals(histogram.getHistogramValue(0, 87), 33);

                assertEquals(histogram.getHistogramValue(0, 88), 32);

                assertEquals(histogram.getHistogramValue(0, 90), 17);

                assertEquals(histogram.getHistogramValue(0, 91), 29);

                assertEquals(histogram.getHistogramValue(0, 92), 11);

                assertEquals(histogram.getHistogramValue(0, 93), 9);

                assertEquals(histogram.getHistogramValue(0, 94), 9);

                assertEquals(histogram.getHistogramValue(0, 95), 8);

                assertEquals(histogram.getHistogramValue(0, 96), 3);

                assertEquals(histogram.getHistogramValue(0, 97), 3);

                assertEquals(histogram.getHistogramValue(0, 98), 3);

        } 

        private void resultTestG(Histogram histogram){

                assertEquals(histogram.getHistogramValue(1, 0), 0);

                assertEquals(histogram.getHistogramValue(1, 1), 0);

                assertEquals(histogram.getHistogramValue(1, 2), 0);

                assertEquals(histogram.getHistogramValue(1, 3), 0);

                assertEquals(histogram.getHistogramValue(1, 4), 0);

                assertEquals(histogram.getHistogramValue(1, 5), 0);

                assertEquals(histogram.getHistogramValue(1, 6), 0);

                assertEquals(histogram.getHistogramValue(1, 7), 0);

                assertEquals(histogram.getHistogramValue(1, 8), 0);

                assertEquals(histogram.getHistogramValue(1, 9), 0);

                assertEquals(histogram.getHistogramValue(1, 10), 0);

                assertEquals(histogram.getHistogramValue(1, 155), 4);

                assertEquals(histogram.getHistogramValue(1, 156), 3);

                assertEquals(histogram.getHistogramValue(1, 157), 2);

                assertEquals(histogram.getHistogramValue(1, 158), 0);

                assertEquals(histogram.getHistogramValue(1, 159), 2);

                assertEquals(histogram.getHistogramValue(1, 111), 21);

                assertEquals(histogram.getHistogramValue(1, 112), 13);

                assertEquals(histogram.getHistogramValue(1, 113), 22);

                assertEquals(histogram.getHistogramValue(1, 114), 16);

                assertEquals(histogram.getHistogramValue(1, 115), 13);

                assertEquals(histogram.getHistogramValue(1, 116), 13);

        } 

        private void resultTestB(Histogram histogram){

                assertEquals(histogram.getHistogramValue(2, 28), 1);

                assertEquals(histogram.getHistogramValue(2, 34), 4);

                assertEquals(histogram.getHistogramValue(2, 36), 6);

                assertEquals(histogram.getHistogramValue(2, 37), 14);

                assertEquals(histogram.getHistogramValue(2, 38), 31);

                assertEquals(histogram.getHistogramValue(2, 39), 28);

                assertEquals(histogram.getHistogramValue(2, 47), 2);

                assertEquals(histogram.getHistogramValue(2, 48), 5);

                assertEquals(histogram.getHistogramValue(2, 49), 3);

                assertEquals(histogram.getHistogramValue(2, 50), 1);

                assertEquals(histogram.getHistogramValue(2, 51), 2);

                assertEquals(histogram.getHistogramValue(2, 53), 4);

                assertEquals(histogram.getHistogramValue(2, 151), 8);

                assertEquals(histogram.getHistogramValue(2, 152), 7);

                assertEquals(histogram.getHistogramValue(2, 153), 8);

                assertEquals(histogram.getHistogramValue(2, 158), 8);

                assertEquals(histogram.getHistogramValue(2, 225), 1);

                assertEquals(histogram.getHistogramValue(2, 226), 2);

                assertEquals(histogram.getHistogramValue(2, 227), 0);

                assertEquals(histogram.getHistogramValue(2, 231), 1);

                assertEquals(histogram.getHistogramValue(2, 232), 1);

        } 

        private void print(Histogram histogram){

                for (int i = 0; i < histogram.getNumBands(); i++) {

                        for (int j = 0; j < histogram.getBandLenght(i); j++){

                                System.out.print(histogram.getHistogramValue(i, j) + " ");

                        }

                        System.out.println("");

                }

        }

}