001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/io/shpapi/SHPEnvelope.java $
002
003 /*----------------------------------------------------------------------------
004 This file is part of deegree, http://deegree.org/
005 Copyright (C) 2001-2009 by:
006 Department of Geography, University of Bonn
007 and
008 lat/lon GmbH
009
010 This library is free software; you can redistribute it and/or modify it under
011 the terms of the GNU Lesser General Public License as published by the Free
012 Software Foundation; either version 2.1 of the License, or (at your option)
013 any later version.
014 This library is distributed in the hope that it will be useful, but WITHOUT
015 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
016 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
017 details.
018 You should have received a copy of the GNU Lesser General Public License
019 along with this library; if not, write to the Free Software Foundation, Inc.,
020 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
021
022 Contact information:
023
024 lat/lon GmbH
025 Aennchenstr. 19, 53177 Bonn
026 Germany
027 http://lat-lon.de/
028
029 Department of Geography, University of Bonn
030 Prof. Dr. Klaus Greve
031 Postfach 1147, 53001 Bonn
032 Germany
033 http://www.geographie.uni-bonn.de/deegree/
034
035 e-mail: info@deegree.org
036 ----------------------------------------------------------------------------*/
037
038 package org.deegree.io.shpapi;
039
040 import java.io.Serializable;
041
042 import org.deegree.model.spatialschema.ByteUtils;
043
044 /**
045 * Class representing a rectangle - envelope.
046 *
047 * <P>
048 * <B>Last changes<B>:<BR>
049 * 07.01.2000 ap: all methods copied from Rectangle.java<BR>
050 * 07.01.2000 ap: constructor renamed<BR>
051 * 17.01.2000 ap: constructor SHPEnvelope(ESRIBoundingBox Ebb) removed<BR>
052 * 17.01.2000 ap: constructor SHPEnvelope(SHPEnvelope env)implemented<BR>
053 * 01.08.2000 ap: method writeSHPEnvelope() added<BR>
054 *
055 * <!---------------------------------------------------------------------------->
056 *
057 * @version 01.08.2000
058 * @author Andreas Poth
059 *
060 */
061
062 public class SHPEnvelope implements Serializable {
063
064 private static final long serialVersionUID = 3984929126225855256L;
065
066 /**
067 * this order:
068 *
069 * west, east, north, south
070 */
071
072 // each double 8 byte distance, offset due to position in .shp-file-record
073 public static final int recWest = 4;
074
075 /**
076 *
077 */
078 public static final int recSouth = 12;
079
080 /**
081 *
082 */
083 public static final int recEast = 20;
084
085 /**
086 *
087 */
088 public static final int recNorth = 28;
089
090 // west bounding coordinate
091 /**
092 *
093 */
094 public double west;
095
096 // east bounding coordinate
097 /**
098 *
099 */
100 public double east;
101
102 // north bounding coordinate
103 /**
104 *
105 */
106 public double north;
107
108 // south bounding coordinate
109 /**
110 *
111 */
112 public double south;
113
114 // ------------- CONSTRUTOR IMPLEMENTATION BEGIN
115 /**
116 *
117 */
118 public SHPEnvelope() {
119
120 west = 0.0;
121 east = 0.0;
122 north = 0.0;
123 south = 0.0;
124
125 }
126
127 /**
128 * @param westbc
129 * @param eastbc
130 * @param northbc
131 * @param southbc
132 */
133 public SHPEnvelope( double westbc, double eastbc, double northbc, double southbc ) {
134
135 this.west = westbc; // west bounding coordinate
136 this.east = eastbc; // east bounding coordinate
137 this.north = northbc; // north bounding coordinate
138 this.south = southbc; // south bounding coordinate
139
140 }
141
142 /**
143 * Transform from WKBPoint to Rectangle
144 *
145 * @param min
146 * @param max
147 */
148 public SHPEnvelope( SHPPoint min, SHPPoint max ) {
149
150 // west bounding coordinate = minEsri.x
151 this.west = min.x;
152 // east bounding coordinate = maxEsri.x
153 this.east = max.x;
154 // north bounding coordinate = maxEsri.y
155 this.north = max.y;
156 // south bounding coordinate = minEsri.y
157 this.south = min.y;
158
159 }
160
161 /**
162 * create from an existing SHPEnvelope
163 *
164 * @param env
165 */
166 public SHPEnvelope( SHPEnvelope env ) {
167
168 // west bounding coordinate = Ebb.min.x
169 this.west = env.west;
170 // east bounding coordinate = Ebb.max.x
171 this.east = env.east;
172 // north bounding coordinate = Ebb.max.y
173 this.north = env.north;
174 // south bounding coordinate = Ebb.min.y
175 this.south = env.south;
176
177 }
178
179 /**
180 * @param recBuf
181 */
182 public SHPEnvelope( byte[] recBuf ) {
183
184 // west bounding coordinate = xmin of rec-Box
185 this.west = ByteUtils.readLEDouble( recBuf, recWest );
186 // east bounding coordinate = xmax of rec-Box
187 this.east = ByteUtils.readLEDouble( recBuf, recEast );
188 // north bounding coordinate = ymax of rec-Box
189 this.north = ByteUtils.readLEDouble( recBuf, recNorth );
190 // south bounding coordinate = ymin of rec-Box
191 this.south = ByteUtils.readLEDouble( recBuf, recSouth );
192
193 }
194
195 /**
196 * @return the new byte array
197 */
198 public byte[] writeLESHPEnvelope() {
199 byte[] recBuf = new byte[8 * 4];
200 // west bounding coordinate = xmin of rec-Box
201 ByteUtils.writeLEDouble( recBuf, 0, west );
202 // south bounding coordinate = ymin of rec-Box
203 ByteUtils.writeLEDouble( recBuf, 8, south );
204 // east bounding coordinate = xmax of rec-Box
205 ByteUtils.writeLEDouble( recBuf, 16, east );
206 // north bounding coordinate = ymax of rec-Box
207 ByteUtils.writeLEDouble( recBuf, 24, north );
208
209 return recBuf;
210 }
211
212 /**
213 * @return the new byte array
214 */
215 public byte[] writeBESHPEnvelope() {
216 byte[] recBuf = new byte[8 * 4];
217 // west bounding coordinate = xmin of rec-Box
218 ByteUtils.writeBEDouble( recBuf, 0, west );
219 // south bounding coordinate = ymin of rec-Box
220 ByteUtils.writeBEDouble( recBuf, 8, south );
221 // east bounding coordinate = xmax of rec-Box
222 ByteUtils.writeBEDouble( recBuf, 16, east );
223 // north bounding coordinate = ymax of rec-Box
224 ByteUtils.writeLEDouble( recBuf, 24, north );
225
226 return recBuf;
227 }
228
229 // ----------------- METHOD IMPLEMENTATION
230 @Override
231 public String toString() {
232
233 return "RECTANGLE" + "\n[west: " + this.west + "]" + "\n[east: " + this.east + "]" + "\n[north: " + this.north
234 + "]" + "\n[south: " + this.south + "]";
235
236 }
237
238 }