001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/graphics/OWSRasterLayer.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2008 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstr. 19
030 53177 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Prof. Dr. Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: greve@giub.uni-bonn.de
041
042 ---------------------------------------------------------------------------*/
043 package org.deegree.graphics;
044
045 import java.awt.image.BufferedImage;
046 import java.io.IOException;
047 import java.net.URL;
048
049 import org.deegree.framework.log.ILogger;
050 import org.deegree.framework.log.LoggerFactory;
051 import org.deegree.framework.util.ImageUtils;
052 import org.deegree.model.coverage.grid.GridCoverage;
053 import org.deegree.model.coverage.grid.ImageGridCoverage;
054 import org.deegree.model.crs.CoordinateSystem;
055 import org.deegree.model.spatialschema.Envelope;
056
057 /**
058 *
059 *
060 *
061 * @version $Revision: 9340 $
062 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
063 * @author last edited by: $Author: apoth $
064 *
065 * @version $Revision: 9340 $, $Date: 2007-12-27 13:32:12 +0100 (Do, 27 Dez 2007) $
066 */
067 public class OWSRasterLayer extends AbstractLayer {
068
069 private ILogger LOG = LoggerFactory.getLogger( OWSRasterLayer.class );
070
071 private URL baseURL;
072
073 private Envelope envelope;
074
075 /**
076 *
077 * @param name
078 * @param baseURL
079 * @throws Exception
080 */
081 public OWSRasterLayer( String name, URL baseURL ) throws Exception {
082 super( name );
083 this.baseURL = baseURL;
084 }
085
086 /**
087 * @param crs
088 * @throws Exception
089 *
090 */
091 public void setCoordinatesSystem( CoordinateSystem crs )
092 throws Exception {
093 // not supported yet
094 }
095
096 /*
097 * (non-Javadoc)
098 *
099 * @see org.deegree.graphics.AbstractLayer#getBoundingBox()
100 */
101 @Override
102 public Envelope getBoundingBox() {
103 return envelope;
104 }
105
106 /**
107 *
108 * @param envelope
109 * @param w
110 * width of image
111 * @param h
112 * height of image
113 * @return
114 * @throws IOException
115 */
116 public GridCoverage getRaster( Envelope envelope, double w, double h )
117 throws IOException {
118
119 this.envelope = envelope;
120 StringBuffer sb = new StringBuffer( 150 );
121 sb.append( baseURL );
122 appendBoxParamtersToBuffer( sb, envelope, (int) w, (int) h );
123
124 URL u = new URL( sb.toString() );
125
126 GridCoverage gc = null;
127 try {
128 BufferedImage img = ImageUtils.loadImage( u );
129
130 gc = new ImageGridCoverage( null, envelope, img );
131
132 } catch ( Exception e ) {
133 LOG.logDebug( "Error getting raster data: " + e.getMessage() );
134 }
135 return gc;
136 }
137
138 private void appendBoxParamtersToBuffer( StringBuffer sb, Envelope env, int w, int h ) {
139
140 sb.append( "&BBOX=" ).append( env.getMin().getX() ).append( "," ).append( env.getMin().getY() ).append( "," ).append(
141 env.getMax().getX() ).append(
142 "," ).append(
143 env.getMax().getY() ).append(
144 "&WIDTH=" ).append(
145 w ).append(
146 "&HEIGHT=" ).append(
147 h );
148 }
149
150 }