root / trunk / libraries / libRaster / src-test / org / gvsig / raster / grid / TGReadingFullDatasourceSelectingBands.java @ 27361
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.raster.grid; |
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import junit.framework.TestCase; |
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import org.gvsig.raster.RasterLibrary; |
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import org.gvsig.raster.buffer.BufferFactory; |
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import org.gvsig.raster.buffer.RasterBufferInvalidAccessException; |
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import org.gvsig.raster.buffer.RasterBufferInvalidException; |
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import org.gvsig.raster.dataset.NotSupportedExtensionException; |
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import org.gvsig.raster.dataset.RasterDataset; |
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import org.gvsig.raster.dataset.io.RasterDriverException; |
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/**
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* Este test prueba el acceso a datos a traves de un grid.
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* A partir de una fuente de datos (cargada en el constructor del Grid).
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* 1-F32 Monobanda: Se har? una petici?n del extent completo de la fuente seleccionando tres bandas.
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* 2-Comprobamos el tipo de datos el ancho y el alto
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* 3-Modifica algunos valores del grid y se comprueba que las modificaciones han sido efectivas.
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* 4-Cambiamos la banda a operar y obtenemos un dato comprobando que tiene que devolver NoData
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*
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* 1-RGB: Se har? una petici?n del extent completo de la fuente seleccionando tres bandas.
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* 2-Comprobamos el tipo de datos el ancho y el alto
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* 3-Modifica algunos valores del grid y se comprueba que las modificaciones han sido efectivas.
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* 4-Cambiamos la banda a operar y obtenemos un dato comprobando que el valor que devuelve es correcto
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* 5 -Comprobamos que si nos salimos devuelve un NoData
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*
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*/
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public class TGReadingFullDatasourceSelectingBands extends TestCase{ |
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private String baseDir = "./test-images/"; |
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private String path1 = baseDir + "miniRaster28x25F32.tif"; |
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private String path2 = baseDir + "miniRaster25x24.tif"; |
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private RasterDataset f1 = null; |
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private RasterDataset f2 = null; |
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private BufferFactory ds1 = null; |
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private BufferFactory ds2 = null; |
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static {
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RasterLibrary.wakeUp(); |
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} |
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public void start() { |
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this.setUp();
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this.testStack();
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} |
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public void setUp() { |
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System.err.println("TGReadingFullDatasourceSelectingBands running..."); |
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try {
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f1 = RasterDataset.open(null, path1);
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f2 = RasterDataset.open(null, path2);
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} catch (NotSupportedExtensionException e) {
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e.printStackTrace(); |
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} catch (RasterDriverException e) {
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e.printStackTrace(); |
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} |
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ds1 = new BufferFactory(f1);
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ds2 = new BufferFactory(f2);
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} |
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public void testStack() { |
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int[] drawableBands = {0, 1, 2}; |
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try {
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Grid g = new Grid(ds1, drawableBands);
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assertEquals(g.getDataType(), 4); //Tipo float |
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assertEquals(g.getNY(), 25); //Alto |
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assertEquals(g.getNX(), 28); //Ancho |
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testCellBufferFloat(g, 0);
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g.setCellValue(0, 0, (float)31.22); |
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g.setCellValue(2, 2, (float)31.22); |
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g.setCellValue(3, 8, (float)31.22); |
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g.setCellValue(10, 15, (float)31.22); |
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testCellBufferFloat(g, 0);
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assertEquals((int)g.getCellValueAsFloat(0, 0), 31); |
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assertEquals((int)g.getCellValueAsFloat(2, 2), 31); |
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assertEquals((int)g.getCellValueAsFloat(3, 8), 31); |
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assertEquals((int)g.getCellValueAsFloat(10, 15), 31); |
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// g.setBandToOperate(2);
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assertEquals((int)g.getCellValueAsFloat(1000, 1000), -99999); |
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g = new Grid(ds2, drawableBands);
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assertEquals(g.getDataType(), 0); //Tipo byte |
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assertEquals(g.getNY(), 24); //Alto |
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assertEquals(g.getNX(), 25); //Ancho |
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testCellBufferByte(g, 0);
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g.setCellValue(0, 0, (byte)31); |
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g.setCellValue(2, 2, (byte)31); |
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g.setCellValue(3, 8, (byte)31); |
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g.setCellValue(10, 15, (byte)31); |
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testCellBufferByte(g, 0);
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assertEquals(g.getCellValueAsByte(0, 0), 31); |
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assertEquals(g.getCellValueAsByte(2, 2), 31); |
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assertEquals(g.getCellValueAsByte(3, 8), 31); |
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assertEquals(g.getCellValueAsByte(10, 15), 31); |
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g.setBandToOperate(2);
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assertEquals((int)g.getCellValueAsByte(10, 15), 107); |
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//Comprobamos que si nos salimos devuelve un NoData
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assertEquals((int)g.getCellValueAsFloat(100, 100), -99999); |
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assertEquals((int)g.getCellValueAsFloat(-1, 10), -99999); |
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assertEquals((int)g.getCellValueAsFloat(1000, 2310), -99999); |
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} catch (RasterBufferInvalidException e1) {
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e1.printStackTrace(); |
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} catch (RasterBufferInvalidAccessException e2) {
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e2.printStackTrace(); |
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} catch (OutOfGridException e3) {
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e3.printStackTrace(); |
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} catch (GridException e3) {
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e3.printStackTrace(); |
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} catch (InterruptedException e) { |
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} |
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} |
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/**
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* Compara todos los elementos del buffer con los del grid para comprobar
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* la correcci?n de la lectura.
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* @param g
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* @throws RasterBufferInvalidAccessException
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* @throws InterruptedException
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*/
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private void testCellBufferFloat(Grid g, int band) throws RasterBufferInvalidAccessException, GridException, InterruptedException { |
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int nCols = f1.getWidth();
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int nRows = f1.getHeight();
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for(int i = 0; i < nRows; i ++) { |
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for(int j = 0; j < nCols; j ++) |
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assertEquals((int)g.getCellValueAsFloat(j, i), (int)ds1.getRasterBuf().getElemFloat(i, j, band)); |
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} |
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} |
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/**
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* Compara todos los elementos del buffer con los del grid para comprobar
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* la correcci?n de la lectura.
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* @param g
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* @throws RasterBufferInvalidAccessException
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* @throws InterruptedException
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*/
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private void testCellBufferByte(Grid g, int band) throws RasterBufferInvalidAccessException, GridException, InterruptedException { |
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int nCols = f2.getWidth();
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int nRows = f2.getHeight();
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for(int i = 0; i < nRows; i ++) { |
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for(int j = 0; j < nCols; j ++) |
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assertEquals((int)g.getCellValueAsByte(j, i), (int)ds2.getRasterBuf().getElemByte(i, j, band)); |
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} |
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} |
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} |