| gvSIG desktop 1

/* 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.grid;

import junit.framework.TestCase;

import org.gvsig.raster.RasterLibrary;

import org.gvsig.raster.buffer.RasterBufferInvalidAccessException;

import org.gvsig.raster.buffer.RasterBufferInvalidException;

import org.gvsig.raster.dataset.IBuffer;

import org.gvsig.raster.grid.Grid;

import org.gvsig.raster.grid.GridExtent;

import org.gvsig.raster.grid.GridInterpolated;

import org.gvsig.raster.grid.OutOfGridException;

/**

 * Este test prueba el acceso a datos a traves de un grid.

 * 1-Crear? un buffer vacio para escritura con la extensi?n pasado por par?metro. El extent

 * completo ser? igual que el extent de la vista asignada (SIN INTERPOLACI?N).

 * 2-Comprueba que se calcule bien el n?mero de pixels

 * 3-Asigna datos al grid

 * 4-Los recupera comprobando que est?n bien asignados

 * 

 * 1-Crear? un buffer vacio para escritura con la extensi?n pasado por par?metro. El extent

 * completo ser? distinto que el extent de la vista asignada (CON INTERPOLACI?N).

 * 2-Comprueba que se calcule bien el n?mero de pixels

 * 3-Asigna datos al grid

 * 4-Los recupera con distintos m?todos de interpolaci?n comprobando que est?n bien asignados

 * 

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

 *

 */

public class TGEmptyBufferForWrite extends TestCase{

        static{

                RasterLibrary.wakeUp();        

        }

        public void setUp() {

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

        }

        public void start(){

                this.setUp();

                this.testStack();

        }

        public void testStack(){

                try {

                        //SIN INTERPOLACI?N

                        GridExtent layerExtent = new GridExtent(1000, 1000, 1500, 1500, 50);

                        Grid g = new Grid(layerExtent, layerExtent, IBuffer.TYPE_INT, new int[]{0, 1, 2});

                        //Tama?o en pixels

                        assertEquals(layerExtent.getNX(), 10);

                        assertEquals(layerExtent.getNY(), 10);

                        assertEquals(g.getNX(), 10);

                        assertEquals(g.getNY(), 10);

                        for (int i = 0; i < g.getNX(); i++) {

                                for (int j = 0; j < g.getNY(); j++)

                                        g.setCellValue(j, i, (int)(j * i));

                        }

                        //print(g);

                        for (int i = 0; i < g.getNX(); i++) {

                                for (int j = 0; j < g.getNY(); j++)

                                        assertEquals(g.getCellValueAsInt(j, i), (int)(j * i));

                        }

                        //CON INTERPOLACI?N

                        GridExtent windowExtent = new GridExtent(1125, 1125, 1375, 1375, 50);

                        layerExtent = new GridExtent(1000, 1000, 1500, 1500, 50);

                        g = new Grid(layerExtent, windowExtent, IBuffer.TYPE_INT, new int[]{0, 1, 2});

                        //Tama?o en pixels

                        assertEquals(layerExtent.getNX(), 10);

                        assertEquals(layerExtent.getNY(), 10);

                        assertEquals(g.getNX(), 5);

                        assertEquals(g.getNY(), 5);

                        for (int i = 0; i < g.getLayerNX(); i++) {

                                for (int j = 0; j < g.getLayerNY(); j++)

                                        g.setCellValue(j, i, (int)(j * i));

                        }

                        g.setInterpolationMethod(GridInterpolated.INTERPOLATION_BicubicSpline);

                        int[][] m1 = new int[][]{{9, 12, 15, 18, 21}, {12, 16, 20, 24, 28}, {15, 20, 25, 30, 35}, {18, 24, 30, 36, 42}, {21, 28, 35, 42, 49}};

                        //print(g);

                        compare(m1, g);

                        g.setInterpolationMethod(GridInterpolated.INTERPOLATION_NearestNeighbour);

                        //print(g);

                        int[][] m2 = new int[][]{{9, 12, 15, 18, 21}, {12, 16, 20, 24, 28}, {15, 20, 25, 30, 35}, {18, 24, 30, 36, 42}, {21, 28, 35, 42, 49}};

                        compare(m2, g);

                        g.setInterpolationMethod(GridInterpolated.INTERPOLATION_Bilinear);

                        //print(g);

                        int[][] m3 = new int[][]{{9, 12, 15, 18, 21}, {12, 16, 20, 24, 28}, {15, 20, 25, 30, 35}, {18, 24, 30, 36, 42}, {21, 28, 35, 42, 49}};

                        compare(m3, g);

                        g.setInterpolationMethod(GridInterpolated.INTERPOLATION_BSpline);

                        //print(g);

                        int[][] m4 = new int[][]{{9, 11, 14, 18, 21}, {12, 15, 19, 23, 27}, {14, 20, 24, 29, 35}, {18, 23, 30, 36, 41}, {21, 27, 35, 42, 49}};

                        compare(m4, g);

                        g.setInterpolationMethod(GridInterpolated.INTERPOLATION_InverseDistance);

                        //print(g);

                        int[][] m5 = new int[][]{{9, 12, 15, 18, 21}, {12, 16, 20, 24, 28}, {15, 20, 25, 30, 35}, {18, 24, 30, 36, 42}, {21, 28, 35, 42, 49}};

                        compare(m5, g);

                } catch (RasterBufferInvalidException e1) {

                        e1.printStackTrace();

                }  catch (OutOfGridException e3) {

                        e3.printStackTrace();

                } catch (RasterBufferInvalidAccessException e) {

                        e.printStackTrace();

                }

        }

        private void compare(int[][] m, Grid g) throws RasterBufferInvalidAccessException {

                for(int line = 0; line < g.getNY(); line++){

                        for(int col = 0; col < g.getNX(); col++)

                                assertEquals(g.getCellValueAsInt(col, line), m[line][col]);

                }

        }

        /**

         * Imprime todos los pixels de la fuente de datos en RGB

         * @throws RasterBufferInvalidAccessException 

         */

        private void print(Grid g) throws RasterBufferInvalidAccessException {

                for(int line = 0; line < g.getNY(); line++){

                        for(int col = 0; col < g.getNX(); col++)

                                System.out.print(g.getCellValueAsInt(col, line) + " ");

                        System.out.println();

                }

                System.out.println();

        }

}