1 /*
2 * GISToolkit - Geographical Information System Toolkit
3 * (C) 2002, Ithaqua Enterprises Inc.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation;
8 * version 2.1 of the License.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
20 /* gvSIG. Sistema de Información Geográfica de la Generalitat Valenciana
21 *
22 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
23 *
24 * This program is free software; you can redistribute it and/or
25 * modify it under the terms of the GNU General Public License
26 * as published by the Free Software Foundation; either version 2
27 * of the License, or (at your option) any later version.
28 *
29 * This program is distributed in the hope that it will be useful,
30 * but WITHOUT ANY WARRANTY; without even the implied warranty of
31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
32 * GNU General Public License for more details.
33 *
34 * You should have received a copy of the GNU General Public License
35 * along with this program; if not, write to the Free Software
36 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
37 *
38 * For more information, contact:
39 *
40 * Generalitat Valenciana
41 * Conselleria d'Infraestructures i Transport
42 * Av. Blasco Ibáñez, 50
43 * 46010 VALENCIA
44 * SPAIN
45 *
46 * +34 963862235
47 * gvsig@gva.es
48 * www.gvsig.gva.es
49 *
50 * or
51 *
52 * IVER T.I. S.A
53 * Salamanca 50
54 * 46005 Valencia
55 * Spain
56 *
57 * +34 963163400
58 * dac@iver.es
59 */
60 package org.gvsig.fmap.dal.store.shp.utils;
61
62 import java.nio.ByteBuffer;
63 import java.nio.ByteOrder;
64
65 import org.gvsig.utils.bigfile.BigByteBuffer2;
66
67
68
69 /**
70 * Class to represent the header in the shape file.
71 */
72 public class ShapeFileHeader2 {
73 /**
74 * Shape Type Value Shape Type 0 Null Shape 1 Point 3 PolyLine 5 Polygon 8
75 * MultiPoint 11 PointZ 13 PolyLineZ 15 PolygonZ 18 MultiPointZ 21 PointM
76 * 23 PolyLineM 25 PolygonM 28 MultiPointM 31 MultiPatch
77 */
78
79 /* The null shape type, there is no shape for this record. */
80 public static final int SHAPE_NULL = 0;
81 public static final int SHAPE_POINT = 1;
82 public static final int SHAPE_POLYLINE = 3;
83 public static final int SHAPE_POLYGON = 5;
84 public static final int SHAPE_MULTIPOINT = 8;
85 public static final int SHAPE_POINTZ = 11;
86 public static final int SHAPE_POLYLINEZ = 13;
87 public static final int SHAPE_POLYGONZ = 15;
88 public static final int SHAPE_MULTIPOINTZ = 18;
89 public static final int SHAPE_POINTM = 21;
90 public static final int SHAPE_POLYLINEM = 23;
91 public static final int SHAPE_POLYGONM = 25;
92 public static final int SHAPE_MULTIPOINTM = 28;
93 public static final int SHAPE_MULTIPATCH = 31;
94
95 /** File Code, must be the value 9994 */
96 public int myFileCode = 9994;
97
98 /** Unused 1; */
99 public int myUnused1 = 0;
100
101 /** Unused 2; */
102 public int myUnused2 = 0;
103
104 /** Unused 3; */
105 public int myUnused3 = 0;
106
107 /** Unused 4; */
108 public int myUnused4 = 0;
109
110 /** Unused 5; */
111 public int myUnused5 = 0;
112
113 /** File Length; */
114 public int myFileLength = 0;
115
116 /** Version of the file. */
117 public int myVersion = 1000;
118 public int myShapeType = 0;
119
120 /** BoundingBox Xmin */
121 public double myXmin = 0;
122
123 /** BoundingBox Ymin */
124 public double myYmin = 0;
125
126 /** BoundingBox Xmax */
127 public double myXmax = 0;
128
129 /** BoundingBox Ymax */
130 public double myYmax = 0;
131
132 /** BoundingBox Zmin */
133 public double myZmin = 0;
134
135 /** BoundingBox Zmax */
136 public double myZmax = 0;
137
138 /** BoundingBox Zmin */
139 public double myMmin = 0;
140
141 /** BoundingBox Zmax */
142 public double myMmax = 0;
143
144 // notify about warnings.
145 private boolean myWarning = true;
146
147 /**
148 * ShapeFileHeader constructor comment.
149 */
150 public ShapeFileHeader2() {
151 super();
152 }
153
154 /**
155 * Return the file code.
156 *
157 * @return Entero.
158 */
159 public int getFileCode() {
160 return myFileCode;
161 }
162
163 /**
164 * Return the version of the file.
165 *
166 * @return Versión.
167 */
168 public int getVersion() {
169 return myVersion;
170 }
171
172 /**
173 * Get the extents of the shape file.
174 *
175 * @return FullExtent.
176 */
177 public java.awt.geom.Rectangle2D.Double getFileExtents() {
178 return new java.awt.geom.Rectangle2D.Double(myXmin, myYmin,
179 myXmax - myXmin, myYmax - myYmin);
180 }
181
182 /**
183 * Print warnings to system.out.
184 *
185 * @param inWarning boolean.
186 */
187 public void setWarnings(boolean inWarning) {
188 myWarning = inWarning;
189 }
190
191 /**
192 * Return the length of the header in 16 bit words..
193 *
194 * @return Longitud de la cabecera.
195 */
196 public int getHeaderLength() {
197 return 50;
198 }
199
200 /**
201 * Return the number of 16 bit words in the shape file as recorded in the
202 * header
203 *
204 * @return Longitud del fichero.
205 */
206 public int getFileLength() {
207 return myFileLength;
208 }
209
210 /**
211 * Read the header from the shape file.
212 *
213 * @param in ByteBuffer.
214 */
215 public void readHeader(BigByteBuffer2 in) {
216 // the first four bytes are integers
217 // in.setLittleEndianMode(false);
218 in.order(ByteOrder.BIG_ENDIAN);
219 myFileCode = in.getInt();
220
221 if (myFileCode != 9994) {
222 warn("File Code = " + myFileCode + " Not equal to 9994");
223 }
224
225 // From 4 to 8 are unused.
226 myUnused1 = in.getInt();
227
228 // From 8 to 12 are unused.
229 myUnused2 = in.getInt();
230
231 // From 12 to 16 are unused.
232 myUnused3 = in.getInt();
233
234 // From 16 to 20 are unused.
235 myUnused4 = in.getInt();
236
237 // From 20 to 24 are unused.
238 myUnused5 = in.getInt();
239
240 // From 24 to 28 are the file length.
241 myFileLength = in.getInt();
242
243 // From 28 to 32 are the File Version.
244 in.order(ByteOrder.LITTLE_ENDIAN);
245 myVersion = in.getInt();
246
247 // From 32 to 36 are the Shape Type.
248 myShapeType = in.getInt();
249
250 // From 36 to 44 are Xmin.
251 myXmin = in.getDouble(); // Double.longBitsToDouble(in.getLong());
252
253 // From 44 to 52 are Ymin.
254 myYmin = in.getDouble();
255
256 // From 52 to 60 are Xmax.
257 myXmax = in.getDouble();
258
259 // From 60 to 68 are Ymax.
260 myYmax = in.getDouble();
261
262 // From 68 to 76 are Zmin.
263 myZmin = in.getDouble();
264
265 // From 76 to 84 are Zmax.
266 myZmax = in.getDouble();
267
268 // From 84 to 92 are Mmin.
269 myMmin = in.getDouble();
270
271 // From 92 to 100 are Mmax.
272 myMmax = in.getDouble();
273
274 // that is all 100 bytes of the header.
275 }
276 public void write(ByteBuffer out,int type,
277 int numGeoms,int length,double minX,double minY,double maxX,double maxY,double minZ,double maxZ,double minM,double maxM){
278 out.order(ByteOrder.BIG_ENDIAN);
279
280 out.putInt(myFileCode);
281
282 for (int i = 0; i < 5; i++) {
283 out.putInt(0); //Skip unused part of header
284 }
285
286 out.putInt(length);
287
288 out.order(ByteOrder.LITTLE_ENDIAN);
289
290 out.putInt(myVersion);
291 out.putInt(type);
292
293 //write the bounding box
294 out.putDouble(minX);
295 out.putDouble(minY);
296 out.putDouble(maxX);
297 out.putDouble(maxY);
298 /*
299 out.putDouble(minZ);
300 out.putDouble(minZ);
301 out.putDouble(maxM);
302 out.putDouble(maxM);*/
303 out.order(ByteOrder.BIG_ENDIAN);
304 for (int i = 0; i < 8; i++) {
305 out.putInt(0); //Skip unused part of header
306 }
307
308 }
309
310 /**
311 * Muestra por consola los warning.
312 *
313 * @param inWarn warning.
314 */
315 private void warn(String inWarn) {
316 if (myWarning) {
317 System.out.print("WARNING: ");
318 System.out.println(inWarn);
319 }
320 }
321 }