/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2007-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library 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
* Lesser General Public License for more details.
*
*/
package org.geotools.coverageio.gdal.erdasimg;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Iterator;
import java.util.logging.Logger;
import javax.media.jai.ImageLayout;
import javax.media.jai.JAI;
import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.coverage.grid.GridEnvelope2D;
import org.geotools.coverage.grid.GridGeometry2D;
import org.geotools.coverage.grid.io.AbstractGridFormat;
import org.geotools.coverage.grid.io.GridFormatFactorySpi;
import org.geotools.coverage.grid.io.GridFormatFinder;
import org.geotools.coverageio.gdal.BaseGDALGridCoverage2DReader;
import org.geotools.coverageio.gdal.GDALTestCase;
import org.geotools.factory.Hints;
import org.geotools.geometry.GeneralEnvelope;
import org.geotools.test.TestData;
import org.junit.Assert;
import org.junit.Test;
import org.opengis.parameter.GeneralParameterValue;
import org.opengis.parameter.ParameterValue;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.NoSuchAuthorityCodeException;
/**
* @author Daniele Romagnoli, GeoSolutions
* @author Simone Giannecchini (simboss), GeoSolutions
*
* Testing {@link ErdasImgReader}
*
*
*
* @source $URL$
*/
public final class ErdasImgTest extends GDALTestCase {
protected final static Logger LOGGER = org.geotools.util.logging.Logging.getLogger(
"org.geotools.coverageio.gdal.erdasimg");
/**
* file name of a valid Erdas Imagine sample data to be used for tests.
*/
private final static String fileName = "sample.img";
/**
* Creates a new instance of {@code IDRISIImgTest}
*
* @param name
*/
public ErdasImgTest() {
super("ErdasImagine", new ErdasImgFormatFactory());
}
@Test
public void testIsAvailable() throws NoSuchAuthorityCodeException, FactoryException {
if (!testingEnabled()) {
return;
}
GridFormatFinder.scanForPlugins();
Iterator list = GridFormatFinder.getAvailableFormats().iterator();
boolean found = false;
GridFormatFactorySpi fac = null;
while (list.hasNext()) {
fac = (GridFormatFactorySpi) list.next();
if (fac instanceof ErdasImgFormatFactory) {
found = true;
break;
}
}
Assert.assertTrue("ErdasImgFormatFactory not registered", found);
Assert.assertTrue("ErdasImgFormatFactory not available", fac.isAvailable());
Assert.assertNotNull(new ErdasImgFormatFactory().createFormat());
}
@Test
public void test() throws Exception {
if (!testingEnabled()) {
return;
}
// Preparing an useful layout in case the image is striped.
final ImageLayout l = new ImageLayout();
l.setTileGridXOffset(0).setTileGridYOffset(0).setTileHeight(512).setTileWidth(512);
Hints hints = new Hints();
hints.add(new RenderingHints(JAI.KEY_IMAGE_LAYOUT, l));
File file = null;
try{
file = TestData.file(this, fileName);
}catch (FileNotFoundException fnfe){
LOGGER.warning("test-data not found: " + fileName + "\nTests are skipped");
return;
}
final BaseGDALGridCoverage2DReader reader = new ErdasImgReader(file, hints);
// /////////////////////////////////////////////////////////////////////
//
// read once
//
// /////////////////////////////////////////////////////////////////////
GridCoverage2D gc = (GridCoverage2D) reader.read(null);
forceDataLoading(gc);
// /////////////////////////////////////////////////////////////////////
//
// read again with subsampling and crop
//
// /////////////////////////////////////////////////////////////////////
final double cropFactor = 2.0;
final int oldW = gc.getRenderedImage().getWidth();
final int oldH = gc.getRenderedImage().getHeight();
final Rectangle range = ((GridEnvelope2D)reader.getOriginalGridRange());
final GeneralEnvelope oldEnvelope = reader.getOriginalEnvelope();
final GeneralEnvelope cropEnvelope = new GeneralEnvelope(new double[] {
oldEnvelope.getLowerCorner().getOrdinate(0)
+ (oldEnvelope.getSpan(0) / cropFactor),
oldEnvelope.getLowerCorner().getOrdinate(1)
+ (oldEnvelope.getSpan(1) / cropFactor)
},
new double[] {
oldEnvelope.getUpperCorner().getOrdinate(0),
oldEnvelope.getUpperCorner().getOrdinate(1)
});
cropEnvelope.setCoordinateReferenceSystem(reader.getCrs());
final ParameterValue gg = (ParameterValue) ((AbstractGridFormat) reader.getFormat()).READ_GRIDGEOMETRY2D
.createValue();
gg.setValue(new GridGeometry2D(
new GridEnvelope2D(
new Rectangle(0, 0, (int) (range.width / 2.0 / cropFactor),
(int) (range.height / 2.0 / cropFactor))), cropEnvelope));
gc = (GridCoverage2D) reader.read(new GeneralParameterValue[] { gg });
forceDataLoading(gc);
}
}