001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/graphics/OWSRasterLayer.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.graphics;
037
038 import java.awt.image.BufferedImage;
039 import java.io.IOException;
040 import java.net.URL;
041
042 import org.deegree.framework.log.ILogger;
043 import org.deegree.framework.log.LoggerFactory;
044 import org.deegree.framework.util.ImageUtils;
045 import org.deegree.model.coverage.grid.GridCoverage;
046 import org.deegree.model.coverage.grid.ImageGridCoverage;
047 import org.deegree.model.crs.CoordinateSystem;
048 import org.deegree.model.spatialschema.Envelope;
049
050 /**
051 *
052 *
053 *
054 * @version $Revision: 19454 $
055 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
056 * @author last edited by: $Author: apoth $
057 *
058 * @version $Revision: 19454 $, $Date: 2009-09-01 14:27:33 +0200 (Di, 01. Sep 2009) $
059 */
060 public class OWSRasterLayer extends AbstractLayer {
061
062 private ILogger LOG = LoggerFactory.getLogger( OWSRasterLayer.class );
063
064 private URL baseURL;
065
066 private Envelope envelope;
067
068 /**
069 *
070 * @param name
071 * @param baseURL
072 * @throws Exception
073 */
074 public OWSRasterLayer( String name, URL baseURL ) throws Exception {
075 super( name );
076 this.baseURL = baseURL;
077 }
078
079 /**
080 * @param crs
081 * @throws Exception
082 *
083 */
084 public void setCoordinatesSystem( CoordinateSystem crs )
085 throws Exception {
086 // not supported yet
087 }
088
089 /*
090 * (non-Javadoc)
091 *
092 * @see org.deegree.graphics.AbstractLayer#getBoundingBox()
093 */
094 @Override
095 public Envelope getBoundingBox() {
096 return envelope;
097 }
098
099 /**
100 *
101 * @param envelope
102 * @param w
103 * width of image
104 * @param h
105 * height of image
106 * @return grid coverage for envelope and size
107 * @throws IOException
108 */
109 public GridCoverage getRaster( Envelope envelope, double w, double h )
110 throws IOException {
111
112 this.envelope = envelope;
113 StringBuffer sb = new StringBuffer( 150 );
114 sb.append( baseURL );
115 appendBoxParamtersToBuffer( sb, envelope, (int) w, (int) h );
116
117 URL u = new URL( sb.toString() );
118
119 GridCoverage gc = null;
120 try {
121 BufferedImage img = ImageUtils.loadImage( u );
122
123 gc = new ImageGridCoverage( null, envelope, img );
124
125 } catch ( Exception e ) {
126 LOG.logDebug( "Error getting raster data: " + e.getMessage() );
127 }
128 return gc;
129 }
130
131 private void appendBoxParamtersToBuffer( StringBuffer sb, Envelope env, int w, int h ) {
132
133 sb.append( "&BBOX=" ).append( env.getMin().getX() ).append( "," ).append( env.getMin().getY() );
134 sb.append( "," ).append( env.getMax().getX() ).append( "," ).append( env.getMax().getY() );
135 sb.append( "&WIDTH=" ).append( w ).append( "&HEIGHT=" ).append( h );
136 }
137
138 }