001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/tags/2.1/src/org/deegree/model/coverage/grid/XYZGridCoverageWriter.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2007 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 53115 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 ---------------------------------------------------------------------------*/
044 package org.deegree.model.coverage.grid;
045
046 import java.awt.image.BufferedImage;
047 import java.io.IOException;
048 import java.io.OutputStream;
049 import java.io.PrintWriter;
050 import java.text.DecimalFormat;
051 import java.text.NumberFormat;
052 import java.util.Map;
053
054 import org.deegree.datatypes.parameter.GeneralParameterValueIm;
055 import org.deegree.datatypes.parameter.InvalidParameterNameException;
056 import org.deegree.datatypes.parameter.InvalidParameterValueException;
057 import org.deegree.datatypes.parameter.OperationParameterIm;
058 import org.deegree.datatypes.parameter.ParameterNotFoundException;
059 import org.deegree.graphics.transformation.GeoTransform;
060 import org.deegree.graphics.transformation.WorldToScreenTransform;
061 import org.deegree.processing.raster.converter.Image2RawData;
062 import org.opengis.pt.PT_Envelope;
063
064 /**
065 * Implementation of {@link "org.opengis.coverage.grid.GridCoverageWriter"} for writing a
066 * GridCoverage as XYZ coordinate tuples to a defined destioation
067 *
068 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
069 * @author last edited by: $Author: apoth $
070 *
071 * @version $Revision: 7554 $, $Date: 2007-06-13 10:50:51 +0200 (Mi, 13 Jun 2007) $
072 */
073 public class XYZGridCoverageWriter extends AbstractGridCoverageWriter {
074
075 private static NumberFormat nf = new DecimalFormat( "##########.###" );
076
077 /**
078 *
079 * @param destination
080 * @param metadata
081 * @param subNames
082 * @param currentSubname
083 * @param format
084 */
085 public XYZGridCoverageWriter( Object destination, Map<String, Object> metadata, String[] subNames,
086 String currentSubname, Format format ) {
087 super( destination, metadata, subNames, currentSubname, format );
088
089 }
090
091 /**
092 * disposes all resources assigned to a GMLGridCoverageWriter instance. For most cases this will
093 * be IO-resources
094 *
095 * @throws IOException
096 */
097 public void dispose()
098 throws IOException {
099 }
100
101 /**
102 * @param coverage
103 * @param parameters
104 * must contain the servlet URL within the first field; all other fields must contain
105 * the required parameters for a valid GetCoverage request
106 * @throws InvalidParameterNameException
107 * @throws InvalidParameterValueException
108 * @throws ParameterNotFoundException
109 * @throws IOException
110 */
111 public void write( GridCoverage coverage, GeneralParameterValueIm[] parameters )
112 throws InvalidParameterNameException, InvalidParameterValueException,
113 ParameterNotFoundException, IOException {
114
115 int width = -1;
116 int height = -1;
117 for ( int i = 0; i < parameters.length; i++ ) {
118 OperationParameterIm op = (OperationParameterIm) parameters[i].getDescriptor();
119 String name = op.getName();
120 if ( name.equalsIgnoreCase( "WIDTH" ) ) {
121 Object o = op.getDefaultValue();
122 width = ( (Integer) o ).intValue();
123 } else if ( name.equalsIgnoreCase( "HEIGHT" ) ) {
124 Object o = op.getDefaultValue();
125 height = ( (Integer) o ).intValue();
126 }
127 }
128
129 PrintWriter pw = new PrintWriter( (OutputStream) destination );
130
131 BufferedImage im = ( (AbstractGridCoverage) coverage ).getAsImage( width, height );
132 Image2RawData i2r = new Image2RawData( im );
133 float[][] data = i2r.parse();
134
135 PT_Envelope env = coverage.getEnvelope();
136
137 GeoTransform gt = new WorldToScreenTransform( env.minCP.ord[0], env.minCP.ord[1],
138 env.maxCP.ord[0], env.maxCP.ord[1], 0, 0,
139 im.getWidth() - 1, im.getHeight() - 1 );
140 double offset = 0;
141 double scaleFactor = 1;
142 if ( metadata.get( "offset" ) != null ) {
143 offset = (Double)metadata.get( "offset" );
144 }
145 if ( metadata.get( "scaleFactor" ) != null ) {
146 scaleFactor = (Double)metadata.get( "scaleFactor" );
147 }
148
149 for ( int r = 0; r < data.length; r++ ) {
150 for ( int c = 0; c < data[r].length; c++ ) {
151 double x = gt.getSourceX( c );
152 double y = gt.getSourceY( r );
153 pw.print( x );
154 pw.print( ' ' );
155 pw.print( y );
156 pw.print( ' ' );
157 double d = ( data[r][c] / scaleFactor ) - offset;
158 pw.print( nf.format( d ).replace( ',', '.' ) );
159 pw.print( "\n" );
160 }
161 }
162 pw.flush();
163 }
164
165 }