001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/graphics/displayelements/RasterDisplayElement.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.displayelements;
037
038 import java.awt.Graphics;
039 import java.awt.Graphics2D;
040 import java.awt.image.BufferedImage;
041 import java.awt.image.ConvolveOp;
042 import java.awt.image.Kernel;
043
044 import org.deegree.framework.log.ILogger;
045 import org.deegree.framework.log.LoggerFactory;
046 import org.deegree.framework.util.Pair;
047 import org.deegree.graphics.sld.Categorize;
048 import org.deegree.graphics.sld.Interpolate;
049 import org.deegree.graphics.sld.RasterSymbolizer;
050 import org.deegree.graphics.transformation.GeoTransform;
051 import org.deegree.model.coverage.grid.GridCoverage;
052 import org.deegree.model.coverage.grid.ImageGridCoverage;
053 import org.deegree.model.spatialschema.Envelope;
054 import org.deegree.ogcwebservices.wms.operation.DimensionValues;
055 import org.deegree.ogcwebservices.wms.operation.GetMap;
056 import org.deegree.processing.raster.converter.Image2RawData;
057
058 /**
059 *
060 *
061 *
062 * @version $Revision: 18234 $
063 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
064 * @author last edited by: $Author: apoth $
065 *
066 * @version 1.0. $Revision: 18234 $, $Date: 2009-06-23 15:40:38 +0200 (Di, 23. Jun 2009) $
067 *
068 * @since 2.0
069 */
070 public class RasterDisplayElement extends AbstractDisplayElement {
071
072 private static final long serialVersionUID = -5195730721807600940L;
073
074 private static ILogger LOG = LoggerFactory.getLogger( RasterDisplayElement.class );
075
076 private RasterSymbolizer symbolizer = null;
077
078 private GridCoverage gc = null;
079
080 private GetMap request;
081
082 /**
083 * Creates a new RasterDisplayElement_Impl object.
084 *
085 * @param gc
086 * raster
087 */
088 RasterDisplayElement( GridCoverage gc ) {
089 setRaster( gc );
090 symbolizer = new RasterSymbolizer();
091 }
092
093 /**
094 * Creates a new RasterDisplayElement_Impl object.
095 *
096 * @param gc
097 * raster
098 * @param symbolizer
099 */
100 RasterDisplayElement( GridCoverage gc, RasterSymbolizer symbolizer ) {
101 setRaster( gc );
102 this.symbolizer = symbolizer;
103 }
104
105 RasterDisplayElement( GridCoverage gc, RasterSymbolizer symbolizer, GetMap request ) {
106 this.request = request;
107 setRaster( gc );
108 this.symbolizer = symbolizer;
109 }
110
111 private void paintCoverage( Graphics2D g, float[][] data, int minx, int miny, int maxx, int maxy,
112 BufferedImage image ) {
113 Categorize categorize = symbolizer == null ? null : symbolizer.getCategorize();
114 Interpolate interpolate = symbolizer == null ? null : symbolizer.getInterpolate();
115
116 LOG.logDebug( categorize == null ? "Not using categorization symbolizer." : "Using categorization symbolizer." );
117 LOG.logDebug( interpolate == null ? "Not using interpolation symbolizer." : "Using interpolation symbolizer." );
118
119 int opac = symbolizer == null ? 1 : ( (int) ( 255 * symbolizer.getOpacity() ) << 24 );
120
121 int width = maxx - minx;
122 int height = maxy - miny;
123
124 BufferedImage img = new BufferedImage( data[0].length, data.length, BufferedImage.TYPE_INT_ARGB );
125
126 DimensionValues vals = request == null ? null : request.getDimElev();
127
128 for ( int x = 0; x < data[0].length; ++x ) {
129 for ( int y = 0; y < data.length; ++y ) {
130 float d = data[y][x];
131 int val = 0;
132
133 if ( ( vals != null && vals.includesValue( d ) ) || vals == null ) {
134 if ( categorize == null && interpolate == null ) {
135 val = image.getRGB( x, y );
136 val = val & 0xffffff + opac;
137 } else if ( categorize != null ) {
138 val = categorize.categorize( d, opac );
139 } else if ( interpolate != null ) {
140 val = interpolate.interpolate( d, opac );
141 }
142 }
143
144 img.setRGB( x, y, val );
145 }
146 }
147
148 if ( symbolizer != null && symbolizer.getShaded() ) {
149 BufferedImage old = img;
150
151 Pair<Integer, float[]> pair = symbolizer.getShadeKernel();
152 Kernel kernel = new Kernel( 3, 3, new float[] { -1, -1, -1, -1, 10, -1, -1, -1, -1 } );
153 ConvolveOp op = new ConvolveOp( kernel );
154 img = op.filter( img, null );
155 kernel = new Kernel( pair.first, pair.first, pair.second );
156 op = new ConvolveOp( kernel );
157 img = op.filter( img, null );
158
159 // this post processing is necessary to remove pixels that were filtered out by the
160 // ELEVATION parameter
161 // value and to fix up artifacts from the shade operations above
162 for ( int y = 0; y < old.getHeight(); ++y ) {
163 for ( int x = 0; x < old.getWidth(); ++x ) {
164 int oldVal = old.getRGB( x, y );
165 int newVal = img.getRGB( x, y );
166 if ( oldVal == 0 ) {
167 img.setRGB( x, y, 0 );
168 } else {
169 if ( ( newVal & 0xff000000 ) == 0 ) {
170 img.setRGB( x, y, oldVal );
171 } else if ( ( newVal & 0xffffff ) == 0xffffff ) {
172 img.setRGB( x, y, oldVal );
173 }
174 }
175 }
176 }
177
178 }
179
180 if ( symbolizer != null && symbolizer.getGamma() != 1 ) {
181 Kernel kernel = new Kernel( 1, 1, new float[] { (float) symbolizer.getGamma() } );
182 img = new ConvolveOp( kernel ).filter( img, null );
183 }
184
185 g.drawImage( img, minx, miny, width, height, null );
186 }
187
188 /**
189 * renders the DisplayElement to the submitted graphic context
190 *
191 */
192 public void paint( Graphics g, GeoTransform projection, double scale ) {
193 synchronized ( symbolizer ) {
194 try {
195 if ( doesScaleConstraintApply( scale ) ) {
196 Envelope env = gc.getEnvelope();
197 int minx = (int) ( projection.getDestX( env.getMin().getX() ) );
198 int maxy = (int) ( projection.getDestY( env.getMin().getY() ) );
199 int maxx = (int) ( projection.getDestX( env.getMax().getX() ) );
200 int miny = (int) ( projection.getDestY( env.getMax().getY() ) );
201
202 if ( gc instanceof ImageGridCoverage ) {
203 ImageGridCoverage igc = (ImageGridCoverage) gc;
204 Graphics2D g2 = (Graphics2D) g;
205 BufferedImage image = igc.getAsImage( -1, -1 );
206
207 if ( symbolizer.isDefault() && ( request == null || request.getDimElev() == null ) ) {
208 if ( symbolizer.getGamma() != 1 ) {
209 Kernel kernel = new Kernel( 1, 1, new float[] { (float) symbolizer.getGamma() } );
210 image = new ConvolveOp( kernel ).filter( image, null );
211 }
212 g2.drawImage( image, minx, miny, maxx - minx, maxy - miny, null );
213 } else {
214 if ( symbolizer.scaleValid( scale ) ) {
215 paintCoverage( g2, new Image2RawData( image ).parse(), minx, miny, maxx, maxy, image );
216 }
217 }
218 } else {
219 // TODO
220 // handle other grid coverages
221 }
222 }
223 } catch ( Exception e ) {
224 LOG.logError( e.getMessage(), e );
225 throw new RuntimeException( e.getMessage(), e );
226 }
227 }
228 }
229
230 /**
231 * returns the content of the <code>RasterDisplayElement</code>
232 *
233 * @return gird coverage
234 */
235 public GridCoverage getRaster() {
236 return gc;
237 }
238
239 /**
240 * sets the grid coverage that represents the content of the <code>RasterDisplayElement</code>
241 *
242 * @param gc
243 *
244 */
245 public void setRaster( GridCoverage gc ) {
246 this.gc = gc;
247 }
248
249 @Override
250 public boolean doesScaleConstraintApply( double scale ) {
251 return symbolizer.scaleValid( scale );
252 }
253
254 }