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 }