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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.sis.coverage.grid;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.image.WritableRaster;
import org.opengis.referencing.datum.PixelInCell;
import org.apache.sis.referencing.operation.transform.MathTransforms;
import org.apache.sis.coverage.privy.RasterFactory;
import org.apache.sis.geometry.DirectPosition2D;
// Test dependencies
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
import org.apache.sis.test.TestCase;
import org.apache.sis.referencing.crs.HardCodedCRS;
/**
* Tests {@link TranslatedGridCoverage}.
*
* @author Martin Desruisseaux (Geomatys)
*/
public final class TranslatedGridCoverageTest extends TestCase {
/**
* Creates a new test case.
*/
public TranslatedGridCoverageTest() {
}
/**
* Creates a test coverage with grid coordinates starting at (-20, -10).
* Envelope is BOX(-80 -20, -72 -16).
*/
private static GridCoverage createCoverage() {
final int imageSize = 2;
final GridExtent extent = new GridExtent(imageSize, imageSize).translate(-20, -10);
final GridGeometry domain = new GridGeometry(extent, PixelInCell.CELL_CORNER, MathTransforms.scale(4, 2), HardCodedCRS.WGS84);
final BufferedImage image = RasterFactory.createGrayScaleImage(DataBuffer.TYPE_BYTE, imageSize, imageSize, 1, 0, 10, 24);
final WritableRaster raster = image.getRaster();
raster.setSample(0, 0, 0, 10);
raster.setSample(1, 0, 0, 16);
raster.setSample(0, 1, 0, 20);
raster.setSample(1, 1, 0, 24);
return new GridCoverageBuilder().setDomain(domain).setValues(image).build();
}
/**
* Verifies that the given two-dimensional extent has the given low coordinates.
*/
private static void assertExtentStarts(final GridExtent extent, final long low0, final long low1) {
assertEquals(2, extent.getDimension());
assertEquals(low0, extent.getLow(0));
assertEquals(low1, extent.getLow(1));
}
/**
* Tests using {@link GridCoverageProcessor}.
*/
@Test
public void testUsingProcessor() {
final GridCoverageProcessor processor = new GridCoverageProcessor();
final GridCoverage source = createCoverage();
final GridCoverage target = processor.shiftGrid(source, 30, -5);
assertExtentStarts(source.getGridGeometry().getExtent(), -20, -10);
assertExtentStarts(target.getGridGeometry().getExtent(), 10, -15);
/*
* The result for identical "real world" coordinates should be the same for both coverages.
*/
final DirectPosition2D p = new DirectPosition2D(HardCodedCRS.WGS84, -75, -18);
assertArrayEquals(source.evaluator().apply(p),
target.evaluator().apply(p));
}
}