001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/model/coverage/grid/XYZGridCoverageWriter.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.model.coverage.grid;
037
038 import java.awt.image.BufferedImage;
039 import java.io.IOException;
040 import java.io.OutputStream;
041 import java.io.PrintWriter;
042 import java.text.DecimalFormat;
043 import java.text.NumberFormat;
044 import java.util.Map;
045
046 import org.deegree.datatypes.parameter.GeneralParameterValueIm;
047 import org.deegree.datatypes.parameter.InvalidParameterNameException;
048 import org.deegree.datatypes.parameter.InvalidParameterValueException;
049 import org.deegree.datatypes.parameter.OperationParameterIm;
050 import org.deegree.datatypes.parameter.ParameterNotFoundException;
051 import org.deegree.graphics.transformation.GeoTransform;
052 import org.deegree.graphics.transformation.WorldToScreenTransform;
053 import org.deegree.model.spatialschema.Envelope;
054 import org.deegree.processing.raster.converter.Image2RawData;
055
056 /**
057 * Implementation of {@link "org.opengis.coverage.grid.GridCoverageWriter"} for writing a GridCoverage as XYZ coordinate
058 * tuples to a defined destioation
059 *
060 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
061 * @author last edited by: $Author: mschneider $
062 *
063 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
064 */
065 public class XYZGridCoverageWriter extends AbstractGridCoverageWriter {
066
067 private static NumberFormat nf = new DecimalFormat( "##########.###" );
068
069 /**
070 *
071 * @param destination
072 * @param metadata
073 * @param subNames
074 * @param currentSubname
075 * @param format
076 */
077 public XYZGridCoverageWriter( Object destination, Map<String, Object> metadata, String[] subNames,
078 String currentSubname, Format format ) {
079 super( destination, metadata, subNames, currentSubname, format );
080
081 }
082
083 /**
084 * disposes all resources assigned to a GMLGridCoverageWriter instance. For most cases this will be IO-resources
085 *
086 * @throws IOException
087 */
088 public void dispose()
089 throws IOException {
090 // nothing happening here...
091 }
092
093 /**
094 * @param coverage
095 * @param parameters
096 * must contain the servlet URL within the first field; all other fields must contain the required
097 * parameters for a valid GetCoverage request
098 * @throws InvalidParameterNameException
099 * @throws InvalidParameterValueException
100 * @throws ParameterNotFoundException
101 * @throws IOException
102 */
103 public void write( GridCoverage coverage, GeneralParameterValueIm[] parameters )
104 throws InvalidParameterNameException, InvalidParameterValueException,
105 ParameterNotFoundException, IOException {
106
107 int width = -1;
108 int height = -1;
109 for ( int i = 0; i < parameters.length; i++ ) {
110 OperationParameterIm op = (OperationParameterIm) parameters[i].getDescriptor();
111 String name = op.getName();
112 if ( name.equalsIgnoreCase( "WIDTH" ) ) {
113 Object o = op.getDefaultValue();
114 width = ( (Integer) o ).intValue();
115 } else if ( name.equalsIgnoreCase( "HEIGHT" ) ) {
116 Object o = op.getDefaultValue();
117 height = ( (Integer) o ).intValue();
118 }
119 }
120
121 PrintWriter pw = new PrintWriter( (OutputStream) destination );
122
123 BufferedImage im = ( (AbstractGridCoverage) coverage ).getAsImage( width, height );
124 Image2RawData i2r = new Image2RawData( im );
125 float[][] data = i2r.parse();
126
127 Envelope env = coverage.getEnvelope();
128
129 GeoTransform gt = new WorldToScreenTransform( env.getMin().getX(), env.getMin().getY(), env.getMax().getX(),
130 env.getMax().getY(), 0, 0, im.getWidth() - 1, im.getHeight() - 1 );
131 double offset = 0;
132 double scaleFactor = 1;
133 if ( metadata.get( "offset" ) != null ) {
134 offset = (Double) metadata.get( "offset" );
135 }
136 if ( metadata.get( "scaleFactor" ) != null ) {
137 scaleFactor = (Double) metadata.get( "scaleFactor" );
138 }
139
140 for ( int r = 0; r < data.length; r++ ) {
141 for ( int c = 0; c < data[r].length; c++ ) {
142 double x = gt.getSourceX( c );
143 double y = gt.getSourceY( r );
144 pw.print( x );
145 pw.print( ' ' );
146 pw.print( y );
147 pw.print( ' ' );
148 double d = ( data[r][c] / scaleFactor ) - offset;
149 pw.print( nf.format( d ).replace( ',', '.' ) );
150 pw.print( "\n" );
151 }
152 }
153 pw.flush();
154 }
155
156 }