/**
* This program 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, either version 3 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 Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @author Gabriel Roldan (OpenGeo) 2010
*
*/
package org.geowebcache.storage;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import org.geowebcache.grid.GridSubset;
import org.geowebcache.layer.TileLayer;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.io.ParseException;
import com.vividsolutions.jts.io.WKTReader;
public class RasterMaskTestUtils {
public static boolean debugToDisk;
public static GeometryRasterMaskBuilder buildSampleFilterMatrix(final TileLayer layer,
final String gridsetId) throws Exception {
return buildSampleFilterMatrix(layer, gridsetId, 10);
}
public static GeometryRasterMaskBuilder buildSampleFilterMatrix(final TileLayer layer,
final String gridsetId, final int maxMaskLevel) throws Exception {
final Geometry entries[] = createSampleEntries();
final GridSubset gridSubset = layer.getGridSubset(layer.getGridSubsets().keySet()
.iterator().next());
final int[] metaTilingFactors = layer.getMetaTilingFactors();
GeometryRasterMaskBuilder matrix = new GeometryRasterMaskBuilder(gridSubset,
metaTilingFactors, maxMaskLevel);
try {
for (Geometry geom : entries) {
matrix.setMasksForGeometry(geom);
}
} finally {
matrix.disposeGraphics();
}
logImages(new File("target"), matrix);
return matrix;
}
public static void logImages(final File target, final GeometryRasterMaskBuilder matrix)
throws IOException {
if (debugToDisk) {
BufferedImage[] byLevelMasks = matrix.getByLevelMasks();
for (int i = 0; i < byLevelMasks.length; i++) {
File output = new File(target, "level_" + i + ".tiff");
System.out.println("--- writing " + output.getAbsolutePath() + "---");
ImageIO.write(byLevelMasks[i], "TIFF", output);
}
}
}
/**
* Creates three sample georss feed entries in WGS84
* <p>
* <ul>
* <li>A Polygon covering the lower right quadrant of the world
* <li>A Point at {@code 0, 45}
* <li>A LineString at {@code -90 -45, -90 45}
* </ul>
* </p>
*
* @return
*/
private static Geometry[] createSampleEntries() throws Exception {
Geometry[] entries = {//
entry("POLYGON ((0 0, 0 -90, 180 -90, 180 0, 0 0))"),//
entry("POINT(0 45)"),//
entry("LINESTRING(-90 -45, 90 45)") };
return entries;
}
private static Geometry entry(final String wkt) throws ParseException {
Geometry geometry = new WKTReader().read(wkt);
return geometry;
}
}