svn-gvsig-desktop / trunk / libraries / libFMap / src-test / com / iver / cit / gvsig / fmap / featureiterators / FeatureIteratorTest.java @ 12052
History | View | Annotate | Download (16.8 KB)
1 |
/*
|
---|---|
2 |
* Created on 17-abr-2007
|
3 |
*
|
4 |
* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
5 |
*
|
6 |
* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
|
7 |
*
|
8 |
* This program is free software; you can redistribute it and/or
|
9 |
* modify it under the terms of the GNU General Public License
|
10 |
* as published by the Free Software Foundation; either version 2
|
11 |
* of the License, or (at your option) any later version.
|
12 |
*
|
13 |
* This program is distributed in the hope that it will be useful,
|
14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
16 |
* GNU General Public License for more details.
|
17 |
*
|
18 |
* You should have received a copy of the GNU General Public License
|
19 |
* along with this program; if not, write to the Free Software
|
20 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
21 |
*
|
22 |
* For more information, contact:
|
23 |
*
|
24 |
* Generalitat Valenciana
|
25 |
* Conselleria d'Infraestructures i Transport
|
26 |
* Av. Blasco Ib??ez, 50
|
27 |
* 46010 VALENCIA
|
28 |
* SPAIN
|
29 |
*
|
30 |
* +34 963862235
|
31 |
* gvsig@gva.es
|
32 |
* www.gvsig.gva.es
|
33 |
*
|
34 |
* or
|
35 |
*
|
36 |
* IVER T.I. S.A
|
37 |
* Salamanca 50
|
38 |
* 46005 Valencia
|
39 |
* Spain
|
40 |
*
|
41 |
* +34 963163400
|
42 |
* dac@iver.es
|
43 |
*/
|
44 |
/* CVS MESSAGES:
|
45 |
*
|
46 |
* $Id: FeatureIteratorTest.java 12052 2007-06-07 10:20:38Z azabala $
|
47 |
* $Log$
|
48 |
* Revision 1.8 2007-06-07 10:20:38 azabala
|
49 |
* includes closeIterator
|
50 |
*
|
51 |
* Revision 1.7 2007/06/07 09:31:42 azabala
|
52 |
* *** empty log message ***
|
53 |
*
|
54 |
* Revision 1.5 2007/05/29 19:11:03 azabala
|
55 |
* *** empty log message ***
|
56 |
*
|
57 |
* Revision 1.4 2007/05/23 16:54:29 azabala
|
58 |
* new test for bug 2510 phpcollab task (infinite loop for poly-valencia.shp)
|
59 |
*
|
60 |
* Revision 1.3 2007/05/08 08:48:27 jaume
|
61 |
* GRAPHIC TESTING FOR ISYMBOLS!!!
|
62 |
*
|
63 |
* Revision 1.2 2007/04/25 15:16:10 azabala
|
64 |
* tests for featureiterators with mysql database
|
65 |
*
|
66 |
* Revision 1.1 2007/04/19 18:12:56 azabala
|
67 |
* *** empty log message ***
|
68 |
*
|
69 |
*
|
70 |
*/
|
71 |
package com.iver.cit.gvsig.fmap.featureiterators; |
72 |
|
73 |
import java.awt.Dimension; |
74 |
import java.awt.Toolkit; |
75 |
import java.awt.geom.Rectangle2D; |
76 |
import java.awt.image.BufferedImage; |
77 |
import java.io.File; |
78 |
import java.net.URL; |
79 |
import java.sql.Connection; |
80 |
import java.sql.DriverManager; |
81 |
import java.util.prefs.Preferences; |
82 |
|
83 |
import junit.framework.TestCase; |
84 |
|
85 |
import org.cresques.cts.IProjection; |
86 |
import org.geotools.resources.geometry.XRectangle2D; |
87 |
|
88 |
import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
89 |
import com.iver.cit.gvsig.exceptions.expansionfile.ExpansionFileReadException; |
90 |
import com.iver.cit.gvsig.exceptions.layers.LoadLayerException; |
91 |
import com.iver.cit.gvsig.fmap.MapContext; |
92 |
import com.iver.cit.gvsig.fmap.ViewPort; |
93 |
import com.iver.cit.gvsig.fmap.core.ICanReproject; |
94 |
import com.iver.cit.gvsig.fmap.core.IFeature; |
95 |
import com.iver.cit.gvsig.fmap.core.IGeometry; |
96 |
import com.iver.cit.gvsig.fmap.core.v02.FConverter; |
97 |
import com.iver.cit.gvsig.fmap.crs.CRSFactory; |
98 |
import com.iver.cit.gvsig.fmap.drivers.DBLayerDefinition; |
99 |
import com.iver.cit.gvsig.fmap.drivers.DefaultJDBCDriver; |
100 |
import com.iver.cit.gvsig.fmap.drivers.IConnection; |
101 |
import com.iver.cit.gvsig.fmap.drivers.IFeatureIterator; |
102 |
import com.iver.cit.gvsig.fmap.drivers.IVectorialJDBCDriver; |
103 |
import com.iver.cit.gvsig.fmap.layers.FLayer; |
104 |
import com.iver.cit.gvsig.fmap.layers.FLyrVect; |
105 |
import com.iver.cit.gvsig.fmap.layers.LayerFactory; |
106 |
import com.iver.utiles.swing.threads.Cancellable; |
107 |
import com.vividsolutions.jts.geom.Geometry; |
108 |
import com.vividsolutions.jts.geom.GeometryFactory; |
109 |
import com.vividsolutions.jts.io.ParseException; |
110 |
import com.vividsolutions.jts.io.WKTReader; |
111 |
|
112 |
public class FeatureIteratorTest extends TestCase { |
113 |
static final String fwAndamiDriverPath = "../_fwAndami/gvSIG/extensiones/com.iver.cit.gvsig/drivers"; |
114 |
private static File baseDataPath; |
115 |
private static File baseDriversPath; |
116 |
|
117 |
public static String SHP_DRIVER_NAME = "gvSIG shp driver"; |
118 |
public static String DXF_DRIVER_NAME = "gvSIG DXF Memory Driver"; |
119 |
|
120 |
//TODO MOVER TODO LO ESTATICO A UNA CLASE AUXILIAR QUE NO SEA JUNIT
|
121 |
static IProjection PROJECTION_DEFAULT =
|
122 |
CRSFactory.getCRS("EPSG:23030");
|
123 |
static IProjection newProjection =
|
124 |
CRSFactory.getCRS("EPSG:23029");
|
125 |
|
126 |
static{
|
127 |
try {
|
128 |
doSetup(); |
129 |
} catch (Exception e) { |
130 |
// TODO Auto-generated catch block
|
131 |
e.printStackTrace(); |
132 |
} |
133 |
} |
134 |
|
135 |
private static void doSetup() throws Exception{ |
136 |
URL url = FeatureIteratorTest.class.getResource("testdata"); |
137 |
if (url == null) |
138 |
throw new Exception("No se encuentra el directorio con datos de prueba"); |
139 |
|
140 |
baseDataPath = new File(url.getFile()); |
141 |
if (!baseDataPath.exists())
|
142 |
throw new Exception("No se encuentra el directorio con datos de prueba"); |
143 |
|
144 |
baseDriversPath = new File(fwAndamiDriverPath); |
145 |
if (!baseDriversPath.exists())
|
146 |
throw new Exception("Can't find drivers path: " + fwAndamiDriverPath); |
147 |
|
148 |
LayerFactory.setDriversPath(baseDriversPath.getAbsolutePath()); |
149 |
if (LayerFactory.getDM().getDriverNames().length < 1) |
150 |
throw new Exception("Can't find drivers in path: " + fwAndamiDriverPath); |
151 |
} |
152 |
|
153 |
|
154 |
protected void setUp() throws Exception { |
155 |
super.setUp();
|
156 |
doSetup(); |
157 |
|
158 |
} |
159 |
|
160 |
|
161 |
public static FLayer newLayer(String fileName, |
162 |
String driverName)
|
163 |
throws LoadLayerException {
|
164 |
File file = new File(baseDataPath, fileName); |
165 |
return LayerFactory.createLayer(fileName,
|
166 |
driverName, |
167 |
file, PROJECTION_DEFAULT); |
168 |
} |
169 |
|
170 |
public static FLyrVect newJdbcLayer(String layerName) throws LoadLayerException{ |
171 |
String dbURL = "jdbc:mysql://localhost:3306/datos"; |
172 |
String user = "root"; |
173 |
String pwd = "root"; |
174 |
String tableName = layerName;
|
175 |
Connection conn;
|
176 |
try {
|
177 |
Class.forName("com.mysql.jdbc.Driver"); |
178 |
} catch (ClassNotFoundException e1) { |
179 |
throw new LoadLayerException(layerName, e1); |
180 |
} |
181 |
try {
|
182 |
conn = DriverManager.getConnection(dbURL, user, pwd);
|
183 |
conn.setAutoCommit(false);
|
184 |
|
185 |
String fidField = "gid"; |
186 |
String geomField = "geom"; |
187 |
String[] fields = new String[1]; |
188 |
fields[0] = "gid"; |
189 |
String whereClause = ""; |
190 |
IVectorialJDBCDriver driver = (IVectorialJDBCDriver) |
191 |
LayerFactory.getDM().getDriver("mySQL JDBC Driver");
|
192 |
String strEPSG = "23030"; |
193 |
DBLayerDefinition lyrDef = new DBLayerDefinition();
|
194 |
lyrDef.setName(layerName); |
195 |
lyrDef.setTableName(tableName); |
196 |
lyrDef.setWhereClause(whereClause); |
197 |
lyrDef.setFieldGeometry(geomField); |
198 |
lyrDef.setFieldNames(fields); |
199 |
lyrDef.setFieldID(fidField); |
200 |
lyrDef.setSRID_EPSG(strEPSG); |
201 |
if (driver instanceof ICanReproject) |
202 |
{ |
203 |
((ICanReproject)driver).setDestProjection(strEPSG); |
204 |
} |
205 |
((DefaultJDBCDriver)driver).setData((IConnection) conn, lyrDef); |
206 |
IProjection proj = null;
|
207 |
if (driver instanceof ICanReproject) |
208 |
{ |
209 |
proj = CRSFactory.getCRS("EPSG:" + ((ICanReproject)driver).getSourceProjection());
|
210 |
} |
211 |
|
212 |
return (FLyrVect) LayerFactory.createDBLayer(driver, layerName, proj);
|
213 |
}catch(Exception e){ |
214 |
e.printStackTrace(); |
215 |
} |
216 |
return null; |
217 |
|
218 |
} |
219 |
|
220 |
|
221 |
//test para chequear la rapidez de los metodos de verificacion de candidatos en consultas
|
222 |
//a partir de rectangulo
|
223 |
public void test0(){ |
224 |
String pol1 = "MULTIPOLYGON (((413434.195990259 4790622.699703139, 413441.7000601477 4790624.699360616, 413442.6978540559 4790620.700045662, 413435.2020303979 4790618.700388186, 413434.195990259 4790622.699703139, 413434.195990259 4790622.699703139)))"; |
225 |
String pol2 = "MULTIPOLYGON (((411585.59723499016 4791781.20126231, 411575.39664767997 4791791.999412685, 411586.29816459515 4791802.297648691, 411596.4987519054 4791791.499498316, 411585.59723499016 4791781.20126231, 411585.59723499016 4791781.20126231)))"; |
226 |
WKTReader reader = new WKTReader(new GeometryFactory()); |
227 |
try {
|
228 |
Geometry geo1 = reader.read(pol1); |
229 |
Geometry geo2 = reader.read(pol2); |
230 |
|
231 |
IGeometry igeo1 = FConverter.jts_to_igeometry(geo1); |
232 |
IGeometry igeo2 = FConverter.jts_to_igeometry(geo2); |
233 |
|
234 |
double xmin = 410000; |
235 |
double xmax = 415000; |
236 |
double ymin = 4790000; |
237 |
double ymax = 4793000; |
238 |
Rectangle2D rect = new Rectangle2D.Double(xmin, ymin, (xmax-xmin), (ymax-ymin)); |
239 |
|
240 |
//PrecciseSpatialCheck
|
241 |
long t0 = System.currentTimeMillis(); |
242 |
int NUM_ITERATIONS = 50000; |
243 |
for(int i = 0; i < NUM_ITERATIONS;i++){ |
244 |
igeo1.fastIntersects(rect.getMinX(), |
245 |
rect.getMinY(), rect.getWidth(), rect.getHeight()); |
246 |
igeo2.fastIntersects(rect.getMinX(), |
247 |
rect.getMinY(), rect.getWidth(), rect.getHeight()); |
248 |
} |
249 |
long t1 = System.currentTimeMillis(); |
250 |
System.out.println((t1-t0)+" con precissespatialcheck"); |
251 |
|
252 |
//FastSpatialCheck
|
253 |
Rectangle2D b1 = igeo1.getBounds2D();
|
254 |
Rectangle2D b2 = igeo2.getBounds2D();
|
255 |
|
256 |
|
257 |
long t2 = System.currentTimeMillis(); |
258 |
for(int i = 0; i < NUM_ITERATIONS;i++){ |
259 |
XRectangle2D.intersectInclusive(rect, b1); |
260 |
XRectangle2D.intersectInclusive(rect, b2); |
261 |
} |
262 |
long t3 = System.currentTimeMillis(); |
263 |
System.out.println((t3-t2)+" con fastspatialcheck"); |
264 |
|
265 |
assertTrue((t3-t2) < (t1 - t0)); |
266 |
//Spatial index check
|
267 |
|
268 |
} catch (ParseException e) { |
269 |
// TODO Auto-generated catch block
|
270 |
e.printStackTrace(); |
271 |
} |
272 |
|
273 |
} |
274 |
|
275 |
|
276 |
|
277 |
|
278 |
//pruebas de iteracion para shp (vectorialfileadapter) y dxf (vectorialadapter)
|
279 |
public void test1() { |
280 |
try {
|
281 |
//pruebas de reproyeccion y seleccion de numero de campos
|
282 |
FLyrVect lyr = (FLyrVect) newLayer("Cantabria.shp", SHP_DRIVER_NAME);
|
283 |
lyr.setAvailable(true);
|
284 |
|
285 |
//iteration selecting two fields
|
286 |
IFeatureIterator iterator = lyr.getSource().getFeatureIterator(new String[]{"ID", "AREA"}, null); |
287 |
IFeature feature = iterator.next(); |
288 |
assertTrue(feature != null);
|
289 |
|
290 |
//iteration with reprojection
|
291 |
iterator = lyr.getSource().getFeatureIterator((String[])null, newProjection); |
292 |
IFeature feature2 = iterator.next(); |
293 |
//test of field restriction
|
294 |
assertTrue(feature.getAttributes().length == 2);
|
295 |
//si pasamos null, no devuelve ning?n campo
|
296 |
assertTrue(feature2.getAttributes().length == 0);
|
297 |
assertTrue(!feature.getGeometry().toJTSGeometry().equals(feature2.getGeometry().toJTSGeometry())); |
298 |
iterator.closeIterator(); |
299 |
|
300 |
//pruebas de iteracion espacial
|
301 |
FLyrVect lyr2 = (FLyrVect) newLayer("Edificaciones.shp", SHP_DRIVER_NAME);
|
302 |
lyr2.setAvailable(true);
|
303 |
double xmin = 410000; |
304 |
double xmax = 415000; |
305 |
double ymin = 4790000; |
306 |
double ymax = 4793000; |
307 |
Rectangle2D rect = new Rectangle2D.Double(xmin, ymin, (xmax-xmin), (ymax-ymin)); |
308 |
|
309 |
//fast iteration
|
310 |
long t0 = System.currentTimeMillis(); |
311 |
iterator = lyr2.getSource().getFeatureIterator(rect, null, newProjection, true); |
312 |
int numFeatures = 0; |
313 |
while(iterator.hasNext()){
|
314 |
feature = iterator.next(); |
315 |
numFeatures++; |
316 |
} |
317 |
long t1 = System.currentTimeMillis(); |
318 |
|
319 |
//vemos si hay diferencia entre el fast = true y el fast = false
|
320 |
iterator = lyr2.getSource().getFeatureIterator(rect, null, newProjection, false); |
321 |
int numFeatures3 = 0; |
322 |
while(iterator.hasNext()){
|
323 |
feature = iterator.next(); |
324 |
numFeatures3++; |
325 |
} |
326 |
long t2 = System.currentTimeMillis(); |
327 |
assertTrue(numFeatures3 <= numFeatures); |
328 |
iterator.closeIterator(); |
329 |
System.out.println((t1-t0)+" en la iteracion rapida"); |
330 |
System.out.println("Recuperados "+numFeatures); |
331 |
System.out.println((t2-t1)+" en la iteracion lenta"); |
332 |
System.out.println("Recuperados "+numFeatures3); |
333 |
|
334 |
|
335 |
int numFeatures2 = 0; |
336 |
iterator = lyr2.getSource().getFeatureIterator(); |
337 |
while(iterator.hasNext()){
|
338 |
feature = iterator.next(); |
339 |
numFeatures2++; |
340 |
} |
341 |
assertTrue(numFeatures2 > numFeatures); |
342 |
iterator.closeIterator(); |
343 |
|
344 |
//pruebas de iteracion en base a criterios alfanumericos
|
345 |
final String expr = "select * from " + lyr.getRecordset().getName() + " where area < 700;"; |
346 |
iterator = lyr.getSource().getFeatureIterator(expr, null);
|
347 |
numFeatures2 = 0;
|
348 |
while(iterator.hasNext()){
|
349 |
feature = iterator.next(); |
350 |
numFeatures2++; |
351 |
} |
352 |
iterator.closeIterator(); |
353 |
iterator = lyr.getSource().getFeatureIterator(); |
354 |
while(iterator.hasNext()){
|
355 |
feature = iterator.next(); |
356 |
numFeatures++; |
357 |
} |
358 |
assertTrue(numFeatures2 > 0);
|
359 |
assertTrue(numFeatures > numFeatures2); |
360 |
iterator.closeIterator(); |
361 |
|
362 |
//pruebas con el driver dxf en vez del shp
|
363 |
FLyrVect lyr3 = (FLyrVect) newLayer("es1120003_2_02.dxf", DXF_DRIVER_NAME);
|
364 |
lyr3.setAvailable(true);
|
365 |
iterator = lyr3.getSource().getFeatureIterator("select * from "+lyr3.getRecordset().getName()+" where ID > 17;", null); |
366 |
numFeatures2 = 0;
|
367 |
while(iterator.hasNext()){
|
368 |
feature = iterator.next(); |
369 |
numFeatures2++; |
370 |
} |
371 |
iterator.closeIterator(); |
372 |
assertTrue(numFeatures2 > 0);
|
373 |
|
374 |
//queda por probar los iteradores contra base de datos
|
375 |
//en base a criterios alfanumericos y espaciales
|
376 |
|
377 |
} catch (LoadLayerException e) {
|
378 |
// TODO Auto-generated catch block
|
379 |
e.printStackTrace(); |
380 |
} catch (ReadDriverException e) {
|
381 |
// TODO Auto-generated catch block
|
382 |
e.printStackTrace(); |
383 |
} catch (ExpansionFileReadException e) {
|
384 |
// TODO Auto-generated catch block
|
385 |
e.printStackTrace(); |
386 |
} |
387 |
} |
388 |
|
389 |
|
390 |
|
391 |
// public void test3(){
|
392 |
// try {
|
393 |
// FLyrVect layer = (FLyrVect) newLayer("poly-valencia.shp", SHP_DRIVER_NAME);
|
394 |
// IFeatureIterator iterator = layer.getSource().getFeatureIterator();
|
395 |
// int numFeatures = 0;
|
396 |
// while(iterator.hasNext()){
|
397 |
// iterator.next();
|
398 |
// numFeatures++;
|
399 |
// }
|
400 |
// assert(layer.getSource().getShapeCount() == numFeatures);
|
401 |
//
|
402 |
// } catch (LoadLayerException e) {
|
403 |
// // TODO Auto-generated catch block
|
404 |
// e.printStackTrace();
|
405 |
// } catch (ReadDriverException e) {
|
406 |
// // TODO Auto-generated catch block
|
407 |
// e.printStackTrace();
|
408 |
// } catch (ExpansionFileReadException e) {
|
409 |
// // TODO Auto-generated catch block
|
410 |
// e.printStackTrace();
|
411 |
// }
|
412 |
//
|
413 |
// }
|
414 |
|
415 |
//test of featureIterator with layer poly-valencia using a spatial filter.
|
416 |
//jaume found a bug with an infinite loop iteration
|
417 |
|
418 |
public void test4(){ |
419 |
try {
|
420 |
FLyrVect layer = (FLyrVect) newLayer("poly-valencia.shp", SHP_DRIVER_NAME);
|
421 |
Rectangle2D extent = layer.getFullExtent();
|
422 |
String[] fields = layer.getRecordset().getFieldNames(); |
423 |
|
424 |
|
425 |
IFeatureIterator iterator = layer. |
426 |
getSource(). |
427 |
getFeatureIterator(extent,fields, null, true); |
428 |
int numFeatures = 0; |
429 |
while(iterator.hasNext()){
|
430 |
iterator.next(); |
431 |
numFeatures++; |
432 |
} |
433 |
iterator.closeIterator(); |
434 |
assert(layer.getSource().getShapeCount() == numFeatures);
|
435 |
|
436 |
} catch (LoadLayerException e) {
|
437 |
// TODO Auto-generated catch block
|
438 |
e.printStackTrace(); |
439 |
} catch (ReadDriverException e) {
|
440 |
// TODO Auto-generated catch block
|
441 |
e.printStackTrace(); |
442 |
} catch (ExpansionFileReadException e) {
|
443 |
// TODO Auto-generated catch block
|
444 |
e.printStackTrace(); |
445 |
} |
446 |
} |
447 |
|
448 |
|
449 |
|
450 |
|
451 |
|
452 |
public void test5(){ |
453 |
try {
|
454 |
int WIDTH = 300; |
455 |
int HEIGHT = 200; |
456 |
FLyrVect layer = (FLyrVect) newLayer("municipios.shp", SHP_DRIVER_NAME);
|
457 |
ViewPort vp = new ViewPort(PROJECTION_DEFAULT);
|
458 |
vp.setImageSize(new Dimension(WIDTH, HEIGHT)); |
459 |
vp.setExtent(layer.getFullExtent()); |
460 |
MapContext mapa = new MapContext(vp);
|
461 |
mapa.getLayers().addLayer(layer); |
462 |
BufferedImage img = new BufferedImage(WIDTH, HEIGHT, |
463 |
BufferedImage.TYPE_INT_ARGB);
|
464 |
|
465 |
long t0 = System.currentTimeMillis(); |
466 |
mapa.draw(img, img.createGraphics(),mapa.getScaleView()); |
467 |
long t1 = System.currentTimeMillis(); |
468 |
System.out.println((t1-t0)+" en dibujar con MapContext.draw"); |
469 |
|
470 |
|
471 |
long t2 = System.currentTimeMillis(); |
472 |
layer.draw(img, img.createGraphics(),vp, new Cancellable(){
|
473 |
public boolean isCanceled() { |
474 |
return false; |
475 |
} |
476 |
public void setCanceled(boolean canceled) { |
477 |
}}, getScaleView(vp)); |
478 |
long t3 = System.currentTimeMillis(); |
479 |
System.out.println((t3-t2)+" en dibujar con layer._draw"); |
480 |
|
481 |
} catch (LoadLayerException e) {
|
482 |
// TODO Auto-generated catch block
|
483 |
e.printStackTrace(); |
484 |
} catch (ReadDriverException e) {
|
485 |
// TODO Auto-generated catch block
|
486 |
e.printStackTrace(); |
487 |
} catch (ExpansionFileReadException e) {
|
488 |
// TODO Auto-generated catch block
|
489 |
e.printStackTrace(); |
490 |
} |
491 |
|
492 |
} |
493 |
|
494 |
|
495 |
|
496 |
|
497 |
|
498 |
//TODO Mover spatialindextest a esta clase
|
499 |
public void test7(){ |
500 |
|
501 |
} |
502 |
|
503 |
|
504 |
private long getScaleView(ViewPort viewPort) { |
505 |
double[] CHANGE = { 100000, 100, 1, 0.1, 160934.4, |
506 |
91.44, 30.48, 2.54, 1/8.983152841195214E-4 }; |
507 |
Preferences prefsResolution = Preferences.userRoot().node( "gvsig.configuration.screen" ); |
508 |
Toolkit kit = Toolkit.getDefaultToolkit(); |
509 |
double dpi = prefsResolution.getInt("dpi",kit.getScreenResolution()); |
510 |
IProjection proj = viewPort.getProjection(); |
511 |
if (viewPort.getImageSize() == null) |
512 |
return -1; |
513 |
if (viewPort.getAdjustedExtent() == null) { |
514 |
return 0; |
515 |
} |
516 |
if (proj == null) { |
517 |
double w = ((viewPort.getImageSize().getWidth() / dpi) * 2.54); |
518 |
return (long) (viewPort.getAdjustedExtent().getWidth() / w * CHANGE[viewPort.getMapUnits()]); |
519 |
} |
520 |
|
521 |
return Math.round(proj.getScale(viewPort.getAdjustedExtent().getMinX(), |
522 |
viewPort.getAdjustedExtent().getMaxX(), viewPort.getImageSize() |
523 |
.getWidth(), dpi)); |
524 |
} |
525 |
|
526 |
} |
527 |
|