/* (c) 2014 Open Source Geospatial Foundation - all rights reserved
* (c) 2001 - 2013 OpenPlans
* This code is licensed under the GPL 2.0 license, available at the root
* application directory.
*/
package org.geoserver.wps.gs;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertNotNull;
import static junit.framework.Assert.assertNull;
import java.awt.Color;
import java.awt.geom.Point2D;
import java.awt.image.DataBuffer;
import java.awt.image.RenderedImage;
import java.awt.image.WritableRaster;
import javax.media.jai.RasterFactory;
import org.geoserver.wps.WPSTestSupport;
import org.geotools.coverage.CoverageFactoryFinder;
import org.geotools.coverage.GridSampleDimension;
import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.coverage.grid.GridCoverageFactory;
import org.geotools.coverage.grid.GridGeometry2D;
import org.geotools.geometry.Envelope2D;
import org.geotools.referencing.crs.DefaultGeographicCRS;
import org.junit.Test;
/**
*
* @author ETj <etj at geo-solutions.it>
*/
public class Coverage2RenderedImageAdapterTest extends WPSTestSupport {
protected final static double NODATA = 3.0d;
public Coverage2RenderedImageAdapterTest() {
}
/**
* creates a coverage for testing purposes-
*
* @param width width in pixel of the raster
* @param height height in pixel of the raster
* @param envX0 envelope minx
* @param envY0 envelope miny
* @param envWidth envelope width
* @param envHeight envelope height
* @return the test coverage
*/
protected static GridCoverage2D createTestCoverage(final int width, final int height,
final double envX0, final double envY0,
final double envWidth, final double envHeight) {
final GridCoverageFactory factory = CoverageFactoryFinder.getGridCoverageFactory(null);
WritableRaster raster =
RasterFactory.createBandedRaster(DataBuffer.TYPE_FLOAT, width, height, 1, null);
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
if( x<50 && y<50 ) { // upper left square: vertical lines
if(x % 5 == 0)
raster.setSample(x, y, 0, 0);
else
raster.setSample(x, y, 0, width);
}
else if(x < 50 && y > height-50) { // lower left square: horizontal lines
if(y % 5 == 0)
raster.setSample(x, y, 0, 0);
else
raster.setSample(x, y, 0, width);
}
else if(x > width- 50 && y < 50) { // upper right square: descending diagonal lines
if( (x-y) % 5 == 0)
raster.setSample(x, y, 0, 0);
else
raster.setSample(x, y, 0, width);
}
else if(x > width- 50 && y > height-50) { // lower right square: ascending diagonal lines
if( (x+y) % 5 == 0)
raster.setSample(x, y, 0, 0);
else
raster.setSample(x, y, 0, width);
}
else if(x % 50 == 0 || y % 50 == 0 || (x - y) % 100 == 0)
raster.setSample(x, y, 0, 0); // bigger lines
else
raster.setSample(x, y, 0, x+y); // normal background
}
}
final Color[] colors = new Color[]{
Color.BLUE, Color.CYAN, Color.WHITE, Color.YELLOW, Color.RED
};
return factory.create("Float coverage", raster,
new Envelope2D(DefaultGeographicCRS.WGS84, envX0, envY0, envWidth, envHeight),
null, null,
null, new Color[][]{colors}, null);
}
private static void view(RenderedImage ri, GridGeometry2D gg, GridSampleDimension[] gsd) {
final GridCoverageFactory factory = CoverageFactoryFinder.getGridCoverageFactory(null);
GridCoverage2D rendered = factory.create("Merged coverage", ri,
gg, gsd, null, null);
rendered.show();
}
@Test
public void testSame() throws InterruptedException {
GridCoverage2D src = createTestCoverage(500, 500, 0,0, 10,10);
GridCoverage2D dst = createTestCoverage(500, 500, 0,0, 10,10);
GridCoverage2DRIA cria = GridCoverage2DRIA.create(src, dst, NODATA);
//--- internal points should stay the same
Point2D psrc = new Point2D.Double(2d,3d); // this is on dst gc
Point2D pdst = cria.mapSourcePoint(psrc, 0);
assertEquals(2d, pdst.getX());
assertEquals(3d, pdst.getY());
//--- external points should not be remapped
psrc = new Point2D.Double(600d,600d); // this is on dst gc
pdst = cria.mapSourcePoint(psrc, 0);
assertNull(pdst);
// view(cria, dst.getGridGeometry(), src.getSampleDimensions());
// Viewer.show(src);
// Thread.sleep(15000);
}
@Test
public void testSameWorldSmallerDstRaster() throws InterruptedException {
GridCoverage2D src = createTestCoverage(500,500, 0,0 ,10,10);
GridCoverage2D dst = createTestCoverage(250,250, 0,0 ,10,10);
GridCoverage2DRIA cria = GridCoverage2DRIA.create(dst, src, NODATA);
//--- internal points should double coords (no interp on coords)
Point2D psrc = new Point2D.Double(13d,16d); // this is on dst gc
Point2D pdst = cria.mapSourcePoint(psrc, 0);
assertNotNull("Can't convert " + psrc, pdst);
assertEquals(26d, pdst.getX());
assertEquals(32d, pdst.getY());
//--- external points should not be remapped
psrc = new Point2D.Double(600d,600d); // this is on dst gc
pdst = cria.mapSourcePoint(psrc, 0);
assertNull(pdst);
// new Viewer(getName(), cria);
// Thread.sleep(15000);
}
/**
* Same raster dimension, subset word area
* @throws InterruptedException
*/
@Test
public void testSameRasterSmallerWorld() throws InterruptedException {
GridCoverage2D src = createTestCoverage(500,500, 0,0 ,10,10);
GridCoverage2D dst = createTestCoverage(500,500, 0,0 ,5,5);
// double nodata[] = src.getSampleDimension(0).getNoDataValues();
GridCoverage2DRIA cria = GridCoverage2DRIA.create(dst, src, NODATA);
//--- internal points should halves coords (no interp on coords)
Point2D psrc = new Point2D.Double(0d,0d);
Point2D pdst = cria.mapSourcePoint(psrc, 0);
// System.out.println(pdst);
assertEquals(0d, pdst.getX());
assertEquals(250d, pdst.getY());
psrc = new Point2D.Double(20d,30d); // this is on dst gc
pdst = cria.mapSourcePoint(psrc, 0);
assertEquals(10d, pdst.getX());
assertEquals(250d + 15d, pdst.getY());
// System.out.println(pdst);
// new Viewer(getName(), cria);
// Thread.sleep(15000);
}
/**
* Same raster dimension, subset word area
* @throws InterruptedException
*/
@Test
public void testSameRasterTranslatedWorld0() throws InterruptedException {
GridCoverage2D src = createTestCoverage(500,500, 0,0 ,5,5);
GridCoverage2D dst = createTestCoverage(500,500, 2,2 ,5,5);
GridCoverage2DRIA cria = GridCoverage2DRIA.create(dst, src, NODATA);
//--- internal points should halves coords (no interp on coords)
Point2D psrc = new Point2D.Double(0d,499d); // this is on dst gc
Point2D pdst = cria.mapSourcePoint(psrc, 0);
assertNotNull(pdst);
assertEquals(200d, pdst.getX());
assertEquals(299d, pdst.getY());
//--- points not inside dest but inside src shoud be remapped on a novalue cell
psrc = new Point2D.Double(0d,0d); // this is on dst gc
pdst = cria.mapSourcePoint(psrc, 0);
assertNull(pdst); // should not map on src raster
double val = cria.getData().getSampleFloat(0, 0, 0);
assertEquals("Value should be noData", NODATA, val);
// new Viewer(getName(), cria);
// Thread.sleep(20000);
}
}