/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2011, Open Source Geospatial Foundation (OSGeo)
* (C) 2001-2007 TOPP - www.openplans.org.
*
* 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.process.raster;
import java.io.IOException;
import org.geotools.process.factory.DescribeParameter;
import org.geotools.process.factory.DescribeProcess;
import org.geotools.process.factory.DescribeResult;
import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.renderer.lite.gridcoverage2d.RasterSymbolizerHelper;
import org.geotools.renderer.lite.gridcoverage2d.SubchainStyleVisitorCoverageProcessingAdapter;
import org.geotools.styling.RasterSymbolizer;
import org.geotools.styling.Style;
/**
* Applies a raster symbolizer to the coverage
*
* @author Andrea Aime - GeoSolutions
* @author ETj <etj at geo-solutions.it>
*
* @source $URL$
*/
@DescribeProcess(title = "Style Coverage", description = "Styles a raster using a given SLD and raster symbolizer.")
public class StyleCoverage implements RasterProcess {
@DescribeResult(name = "result", description = "Styled image")
public GridCoverage2D execute(
@DescribeParameter(name = "coverage", description = "Input raster") GridCoverage2D coverage,
@DescribeParameter(name = "style", description = "Styled Layer Descriptor (SLD) style containing a raster symbolizer") Style style)
throws IOException {
// TODO: perform a lookup in the entire style?
final RasterSymbolizer symbolizer = (RasterSymbolizer) style.featureTypeStyles().get(0)
.rules().get(0).symbolizers().get(0);
SubchainStyleVisitorCoverageProcessingAdapter rsh = new RasterSymbolizerHelper(coverage,
null);
rsh.visit(symbolizer);
GridCoverage2D g = ((GridCoverage2D) rsh.execute()).geophysics(false);
return g;
}
}