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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.FileNotOpenException;

import org.gvsig.raster.dataset.NotSupportedExtensionException;

import org.gvsig.raster.dataset.RasterDataset;

import org.gvsig.raster.dataset.RasterDriverException;

import org.gvsig.raster.util.Histogram;

/**

 * 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 TestGdalByteHistogram 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("TestGdalByteHistogram running...");

        }

        static{

                RasterLibrary.wakeUp();

        }

        public void testStack(){

                try {

                        f = RasterDataset.open(null, path);

                } catch (NotSupportedExtensionException e) {

                        return;

                } catch (RasterDriverException e) {

                        return;

                }

                ds = new BufferFactory(f);

                Histogram histogram = null;

                try {

                        histogram = f.getHistogram().getHistogram();

                } catch (FileNotOpenException e) {

                        e.printStackTrace();

                } catch (RasterDriverException e) {

                        e.printStackTrace();

                }

                //print(histogram);

                resultTestR(histogram);

                resultTestG(histogram);

                resultTestB(histogram);

        }

        private void resultTestR(Histogram histogram){

                assertEquals(histogram.getHistogramValue(0, 0), 16);

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

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

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

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

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

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

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

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

                assertEquals(histogram.getHistogramValue(0, 9), 4);

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

                assertEquals(histogram.getHistogramValue(0, 100), 0);

                assertEquals(histogram.getHistogramValue(0, 101), 0);

                assertEquals(histogram.getHistogramValue(0, 102), 4);

                assertEquals(histogram.getHistogramValue(0, 103), 2);

                assertEquals(histogram.getHistogramValue(0, 104), 0);

                assertEquals(histogram.getHistogramValue(0, 250), 2);

                assertEquals(histogram.getHistogramValue(0, 251), 0);

                assertEquals(histogram.getHistogramValue(0, 252), 0);

                assertEquals(histogram.getHistogramValue(0, 253), 0);

                assertEquals(histogram.getHistogramValue(0, 254), 0);

                assertEquals(histogram.getHistogramValue(0, 255), 0);

        } 

        private void resultTestG(Histogram histogram){

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

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

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

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

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

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

                assertEquals(histogram.getHistogramValue(1, 6), 2);

                assertEquals(histogram.getHistogramValue(1, 7), 8);

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

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

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

                assertEquals(histogram.getHistogramValue(1, 100), 2);

                assertEquals(histogram.getHistogramValue(1, 101), 8);

                assertEquals(histogram.getHistogramValue(1, 102), 6);

                assertEquals(histogram.getHistogramValue(1, 103), 2);

                assertEquals(histogram.getHistogramValue(1, 104), 10);

                assertEquals(histogram.getHistogramValue(1, 250), 0);

                assertEquals(histogram.getHistogramValue(1, 251), 0);

                assertEquals(histogram.getHistogramValue(1, 252), 0);

                assertEquals(histogram.getHistogramValue(1, 253), 0);

                assertEquals(histogram.getHistogramValue(1, 254), 2);

                assertEquals(histogram.getHistogramValue(1, 255), 2);

        } 

        private void resultTestB(Histogram histogram){

                assertEquals(histogram.getHistogramValue(2, 0), 25);

                assertEquals(histogram.getHistogramValue(2, 1), 4);

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

                assertEquals(histogram.getHistogramValue(2, 3), 0);

                assertEquals(histogram.getHistogramValue(2, 4), 0);

                assertEquals(histogram.getHistogramValue(2, 5), 0);

                assertEquals(histogram.getHistogramValue(2, 6), 0);

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

                assertEquals(histogram.getHistogramValue(2, 8), 0);

                assertEquals(histogram.getHistogramValue(2, 9), 0);

                assertEquals(histogram.getHistogramValue(2, 10), 2);

                assertEquals(histogram.getHistogramValue(2, 100), 0);

                assertEquals(histogram.getHistogramValue(2, 101), 6);

                assertEquals(histogram.getHistogramValue(2, 102), 6);

                assertEquals(histogram.getHistogramValue(2, 103), 2);

                assertEquals(histogram.getHistogramValue(2, 104), 0);

                assertEquals(histogram.getHistogramValue(2, 250), 2);

                assertEquals(histogram.getHistogramValue(2, 251), 0);

                assertEquals(histogram.getHistogramValue(2, 252), 0);

                assertEquals(histogram.getHistogramValue(2, 253), 0);

                assertEquals(histogram.getHistogramValue(2, 254), 2);

                assertEquals(histogram.getHistogramValue(2, 255), 0);

        } 

        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("");

                }

        }

}