/*
* Geotoolkit - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2013, Geomatys
*
* 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.geotoolkit.processing.coverage.reformat;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.awt.image.SampleModel;
import org.geotoolkit.coverage.grid.GridCoverage2D;
import org.geotoolkit.coverage.grid.GridCoverageBuilder;
import org.geotoolkit.process.ProcessDescriptor;
import org.geotoolkit.process.Process;
import org.geotoolkit.process.ProcessException;
import org.geotoolkit.process.ProcessFinder;
import org.apache.sis.referencing.CommonCRS;
import org.junit.Test;
import org.opengis.coverage.grid.GridCoverage;
import org.opengis.util.NoSuchIdentifierException;
import static org.junit.Assert.*;
import org.opengis.parameter.ParameterValueGroup;
/**
* Test reformat process.
*
* @author Johann Sorel (Geomatys)
*/
public class ReformatTest extends org.geotoolkit.test.TestBase {
private static final double DELTA = 0.00000001;
@Test
public void testIntToDouble() throws NoSuchIdentifierException, ProcessException{
final BufferedImage inputImage = new BufferedImage(100, 20, BufferedImage.TYPE_3BYTE_BGR);
final Graphics2D g = inputImage.createGraphics();
g.setColor(Color.RED);
g.fillRect(0, 0, 50, 10);
g.setColor(Color.BLUE);
g.fillRect(50, 0, 50, 10);
g.setColor(Color.GREEN);
g.fillRect(0, 10, 50, 10);
g.setColor(Color.BLACK);
g.fillRect(50, 10, 50, 10);
final SampleModel inSampleModel = inputImage.getSampleModel();
final GridCoverageBuilder gcb = new GridCoverageBuilder();
gcb.setRenderedImage(inputImage);
gcb.setCoordinateReferenceSystem(CommonCRS.WGS84.normalizedGeographic());
gcb.setEnvelope(0,0,500,30);
final GridCoverage2D inCoverage = (GridCoverage2D) gcb.build();
final ProcessDescriptor desc = ProcessFinder.getProcessDescriptor("coverage", "reformat");
assertNotNull(desc);
final ParameterValueGroup params = desc.getInputDescriptor().createValue();
params.parameter("coverage").setValue(inCoverage);
params.parameter("datatype").setValue(DataBuffer.TYPE_DOUBLE);
final Process process = desc.createProcess(params);
final ParameterValueGroup result = process.call();
//check result coverage
final GridCoverage2D outCoverage = (GridCoverage2D) result.parameter("result").getValue();
assertEquals(inCoverage.getCoordinateReferenceSystem(), outCoverage.getCoordinateReferenceSystem());
assertEquals(inCoverage.getGridGeometry(), outCoverage.getGridGeometry());
final RenderedImage outImage = outCoverage.getRenderedImage();
final SampleModel outSampleModel = outImage.getSampleModel();
assertEquals(inputImage.getWidth(), outImage.getWidth());
assertEquals(inputImage.getHeight(), outImage.getHeight());
assertEquals(inSampleModel.getNumBands(), outSampleModel.getNumBands());
assertEquals(DataBuffer.TYPE_DOUBLE, outSampleModel.getDataType());
assertFalse(inSampleModel.getDataType() == outSampleModel.getDataType());
//check values
final Raster outRaster = outImage.getData();
final double[] sample = new double[3];
final double[] red = new double[]{255,0,0};
final double[] blue = new double[]{0,0,255};
final double[] green = new double[]{0,255,0};
final double[] black = new double[]{0,0,0};
for(int y=0;y<20;y++){
for(int x=0;x<100;x++){
outRaster.getPixel(x, y, sample);
if(x<50){
assertArrayEquals("coord "+x+","+y,(y<10)?red:green, sample,DELTA);
}else{
assertArrayEquals("coord "+x+","+y,(y<10)?blue:black, sample,DELTA);
}
}
}
}
}