root / branches / v02_desarrollo / libraries / libCq CMS for java.old / src / org / cresques / io / GeoRasterFile.java @ 1527
History | View | Annotate | Download (9.54 KB)
1 |
/*
|
---|---|
2 |
* Created on 26-abr-2004
|
3 |
*
|
4 |
* @author "Luis W. Sevilla" <sevilla_lui@gva.es>
|
5 |
*/
|
6 |
package org.cresques.io; |
7 |
|
8 |
import java.awt.Component; |
9 |
import java.awt.Image; |
10 |
import java.awt.image.DataBuffer; |
11 |
import java.lang.reflect.Constructor; |
12 |
import java.lang.reflect.InvocationTargetException; |
13 |
import java.util.TreeMap; |
14 |
|
15 |
import org.cresques.cts.ICoordTrans; |
16 |
import org.cresques.cts.IProjection; |
17 |
import org.cresques.px.Extent; |
18 |
import org.cresques.px.IObjList; |
19 |
import org.cresques.px.PxContour; |
20 |
import org.cresques.px.PxObjList; |
21 |
|
22 |
/**
|
23 |
* Manejador de ficheros raster georeferenciados.
|
24 |
*
|
25 |
* Esta clase abstracta es el ancestro de todas las clases que proporcionan
|
26 |
* soporte para ficheros raster georeferenciados.<br>
|
27 |
* Actua tambien como una 'Fabrica', ocultando al cliente la manera en que
|
28 |
* se ha implementado ese manejo. Una clase nueva que soportara un nuevo
|
29 |
* tipo de raster tendr?a que registrar su extensi?n o extensiones usando
|
30 |
* el m?todo @see registerExtension.<br>
|
31 |
* @author "Luis W. Sevilla" <sevilla_lui@gva.es>*
|
32 |
*/
|
33 |
|
34 |
public abstract class GeoRasterFile extends GeoFile { |
35 |
public static final int RED_BAND = 0x01; |
36 |
public static final int GREEN_BAND = 0x02; |
37 |
public static final int BLUE_BAND = 0x04; |
38 |
|
39 |
/**
|
40 |
* Filtro para raster.
|
41 |
* Permite eliminar la franja inutil alrededor de un raster girado o de
|
42 |
* un mosaico de borde irregular.
|
43 |
*
|
44 |
* Funciona bien solo con raster en tonos de gris, porque se basa que
|
45 |
* el valor del pixel no supere un determinado valor 'umbral' que se
|
46 |
* le pasa al constructor.
|
47 |
*
|
48 |
* Desarrollado para 'limpiar' los bordes de los mosaicos del SIG
|
49 |
* Oleicola. Para ese caso los par?metros del constructo son:
|
50 |
* PixelFilter(0x10ffff00, 0xff000000, 0xf0f0f0);
|
51 |
*
|
52 |
* @author "Luis W. Sevilla" <sevilla_lui@gva.es>
|
53 |
*/
|
54 |
|
55 |
class PixelFilter { |
56 |
boolean debug = false; |
57 |
int transparente = 0x10ffff00; |
58 |
int orColor = 0xff000000; |
59 |
int umbral = 0xf0f0f0; |
60 |
private int alpha = 0xff; |
61 |
|
62 |
/**
|
63 |
* Constructor para el Oleico
|
64 |
*/
|
65 |
|
66 |
public PixelFilter(int alpha) { |
67 |
transparente = 0x10ffff00;
|
68 |
setAlpha(alpha); |
69 |
//orColor = 0xff000000 | (alpha * 0x1000000);
|
70 |
umbral = 0xf0f0f0;
|
71 |
} |
72 |
|
73 |
/**
|
74 |
* Constructor.
|
75 |
*
|
76 |
* @param trans Color que sustituye a los pixeles filtrados
|
77 |
* @param or M?scara que se aplica a los pixeles restantes
|
78 |
* @param pxMax Umbral que determina los pixeles.
|
79 |
*/
|
80 |
|
81 |
public PixelFilter(int trans, int or, int pxMax) { |
82 |
transparente = trans; |
83 |
setAlpha(orColor / 0x1000000);
|
84 |
orColor = or; |
85 |
umbral = pxMax; |
86 |
} |
87 |
|
88 |
public void setAlpha(int alpha) { |
89 |
this.alpha = alpha;
|
90 |
orColor = alpha * 0x1000000;
|
91 |
} |
92 |
public int getAlpha() { return alpha; } |
93 |
|
94 |
/**
|
95 |
* Filtra una l?nea de pixeles.
|
96 |
*
|
97 |
* @param pRGBArray
|
98 |
*/
|
99 |
|
100 |
public void filterLine(int [] pRGBArray) { |
101 |
for (int i=0; i<pRGBArray.length; i++) { |
102 |
if (debug)
|
103 |
System.out.print(""+i+":"+Integer.toHexString(pRGBArray[i])+","); |
104 |
if (pRGBArray[i] >= umbral)
|
105 |
pRGBArray[i] = transparente; |
106 |
else
|
107 |
pRGBArray[i] |= orColor; |
108 |
} |
109 |
if (debug)
|
110 |
System.out.println(""); |
111 |
} |
112 |
} |
113 |
|
114 |
class SimplePixelFilter extends PixelFilter { |
115 |
public SimplePixelFilter(int alpha) { |
116 |
super(alpha);
|
117 |
} |
118 |
public void filterLine(int [] pRGBArray) { |
119 |
for (int i=0; i<pRGBArray.length; i++) { |
120 |
if (debug)
|
121 |
System.out.print(""+i+":"+Integer.toHexString(pRGBArray[i])+","); |
122 |
pRGBArray[i] |= orColor; |
123 |
} |
124 |
if (debug)
|
125 |
System.out.println(""); |
126 |
} |
127 |
} |
128 |
|
129 |
private static TreeMap supportedExtensions = null; |
130 |
protected Component updatable = null; |
131 |
protected boolean doTransparency = false; |
132 |
//protected int alpha = 0;
|
133 |
protected PixelFilter tFilter = null; |
134 |
|
135 |
protected int rBandNr = 1, gBandNr = 1, bBandNr = 1; |
136 |
protected int bandCount = 1; |
137 |
private int dataType = DataBuffer.TYPE_BYTE; |
138 |
|
139 |
static {
|
140 |
supportedExtensions = new TreeMap(); |
141 |
if (System.getProperty("os.name").toUpperCase().startsWith("WIN")) { |
142 |
supportedExtensions.put("ecw", EcwFile.class);
|
143 |
} |
144 |
supportedExtensions.put("tif", TifGeoRefFile.class);
|
145 |
supportedExtensions.put("tiff", TifGeoRefFile.class);
|
146 |
supportedExtensions.put("jpg", TifGeoRefFile.class);
|
147 |
supportedExtensions.put("png", TifGeoRefFile.class);
|
148 |
supportedExtensions.put("sid", MrSidFile.class);
|
149 |
} |
150 |
|
151 |
/**
|
152 |
* Factoria para abrir distintos tipos de raster.
|
153 |
*
|
154 |
* @param proj Proyecci?n en la que est? el raster.
|
155 |
* @param fName Nombre del fichero.
|
156 |
* @return GeoRasterFile, o null si hay problemas.
|
157 |
*/
|
158 |
public static GeoRasterFile openFile(IProjection proj, String fName) { |
159 |
String ext = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
160 |
GeoRasterFile grf = null;
|
161 |
// TODO NotSupportedExtensionException
|
162 |
if (!supportedExtensions.containsKey(ext)) return grf; |
163 |
/**/
|
164 |
Class clase = (Class) supportedExtensions.get(ext); |
165 |
Class [] args = {IProjection.class, String.class}; |
166 |
try {
|
167 |
Constructor hazNuevo = clase.getConstructor(args);
|
168 |
Object [] args2 = {proj, fName}; |
169 |
grf = (GeoRasterFile) hazNuevo.newInstance(args2); |
170 |
} catch (SecurityException e) { |
171 |
// TODO Auto-generated catch block
|
172 |
e.printStackTrace(); |
173 |
} catch (NoSuchMethodException e) { |
174 |
// TODO Auto-generated catch block
|
175 |
e.printStackTrace(); |
176 |
} catch (IllegalArgumentException e) { |
177 |
// TODO Auto-generated catch block
|
178 |
e.printStackTrace(); |
179 |
} catch (InstantiationException e) { |
180 |
// TODO Auto-generated catch block
|
181 |
e.printStackTrace(); |
182 |
} catch (IllegalAccessException e) { |
183 |
// TODO Auto-generated catch block
|
184 |
e.printStackTrace(); |
185 |
} catch (InvocationTargetException e) { |
186 |
// TODO Auto-generated catch block
|
187 |
e.printStackTrace(); |
188 |
}/**/
|
189 |
|
190 |
/* * /
|
191 |
if (ext.compareTo("ecw") == 0) {
|
192 |
grf = new EcwFile(proj, fName);
|
193 |
} else if (ext.compareTo("tif") == 0 || ext.compareTo("tiff") == 0 || ext.compareTo("jpg") == 0 || ext.compareTo("png") == 0 ) {
|
194 |
grf = new TifGeoRefFile(proj, fName);
|
195 |
}/ * */
|
196 |
|
197 |
return grf;
|
198 |
} |
199 |
|
200 |
/**
|
201 |
* Registra una clase que soporta una extensi?n raster.
|
202 |
* @param ext extensi?n soportada.
|
203 |
* @param clase clase que la soporta.
|
204 |
*/
|
205 |
public static void registerExtension(String ext, Class clase) { |
206 |
ext = ext.toLowerCase(); |
207 |
System.out.println("RASTER: extension '"+ext+"' supported."); |
208 |
supportedExtensions.put(ext, clase); |
209 |
} |
210 |
|
211 |
/**
|
212 |
* Tipo de fichero soportado.
|
213 |
* Devuelve true si el tipo de fichero (extension) est? soportado, si no
|
214 |
* devuelve false.
|
215 |
*
|
216 |
* @param fName Fichero raster
|
217 |
* @return true si est? soportado, si no false.
|
218 |
*/
|
219 |
public static boolean fileIsSupported(String fName) { |
220 |
String ext = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
221 |
return supportedExtensions.containsKey(ext);
|
222 |
} |
223 |
|
224 |
public GeoRasterFile(IProjection proj, String name) { |
225 |
super(proj, name);
|
226 |
} |
227 |
|
228 |
abstract public GeoFile load(); |
229 |
|
230 |
abstract public void close(); |
231 |
|
232 |
public static PxContour getContour(String fName, String name, IProjection proj) { |
233 |
PxContour contour = null;
|
234 |
return contour;
|
235 |
} |
236 |
|
237 |
abstract public int getWidth(); |
238 |
abstract public int getHeight(); |
239 |
|
240 |
abstract public void reProject(ICoordTrans rp); |
241 |
|
242 |
abstract public void setView(Extent e); |
243 |
abstract public Extent getView(); |
244 |
|
245 |
// TRANSPARENCIA. Versi?n de pruebas. Hay que verificar que se puede
|
246 |
// tener filtros y valores alpha, que no es lento, y que no hay una manera
|
247 |
// mejor de hacerlo.
|
248 |
//abstract public void setTransparency(boolean t);
|
249 |
//abstract public void setTransparency(int t);
|
250 |
public void setTransparency(boolean t) { |
251 |
doTransparency = t; |
252 |
tFilter = new PixelFilter(255); |
253 |
} |
254 |
public void setTransparency(int t ) { |
255 |
doTransparency = true;
|
256 |
tFilter = new SimplePixelFilter(255 - t); |
257 |
} |
258 |
public boolean getTransparency() { return doTransparency; } |
259 |
public void setAlpha(int alpha) { |
260 |
if (!doTransparency) setTransparency(255 - alpha); |
261 |
else tFilter.setAlpha(alpha);
|
262 |
} |
263 |
public int getAlpha() { |
264 |
if (tFilter == null) |
265 |
return 255; |
266 |
return tFilter.getAlpha();
|
267 |
} |
268 |
|
269 |
public void setUpdatable(Component c) { updatable = c; } |
270 |
|
271 |
abstract public Image updateImage(int width, int height, ICoordTrans rp); |
272 |
|
273 |
/**
|
274 |
* Obtiene el valor del raster en la coordenada que se le pasa.
|
275 |
* El valor ser? Double, Int, Byte, etc. dependiendo del tipo de
|
276 |
* raster.
|
277 |
* @param x coordenada X
|
278 |
* @param y coordenada Y
|
279 |
* @return
|
280 |
*/
|
281 |
abstract public Object getData(int x, int y, int band); |
282 |
|
283 |
/**
|
284 |
* Actualiza la/s banda/s especificadas en la imagen.
|
285 |
* @param width ancho
|
286 |
* @param height alto
|
287 |
* @param rp reproyecci?n
|
288 |
* @param img imagen
|
289 |
* @param flags que bandas [ RED_BAND | GREEN_BAND | BLUE_BAND ]
|
290 |
* @return img
|
291 |
*/
|
292 |
abstract public Image updateImage(int width, int height, ICoordTrans rp, Image img, int flags); |
293 |
|
294 |
public int getBandCount() { return bandCount; } |
295 |
|
296 |
/**
|
297 |
* Asocia un colorBand al rojo, verde o azul.
|
298 |
* @param flag cual (o cuales) de las bandas.
|
299 |
* @param nBand que colorBand
|
300 |
*/
|
301 |
|
302 |
public void setBand(int flag, int bandNr) { |
303 |
if ((flag & GeoRasterFile.RED_BAND) == GeoRasterFile.RED_BAND) rBandNr = bandNr;
|
304 |
if ((flag & GeoRasterFile.GREEN_BAND) == GeoRasterFile.GREEN_BAND) gBandNr = bandNr;
|
305 |
if ((flag & GeoRasterFile.BLUE_BAND) == GeoRasterFile.BLUE_BAND) bBandNr = bandNr;
|
306 |
} |
307 |
|
308 |
/**
|
309 |
* Devuelve el colorBand activo en la banda especificada.
|
310 |
* @param flag banda.
|
311 |
*/
|
312 |
|
313 |
public int getBand(int flag) { |
314 |
if (flag == GeoRasterFile.RED_BAND) return rBandNr; |
315 |
if (flag == GeoRasterFile.GREEN_BAND) return gBandNr; |
316 |
if (flag == GeoRasterFile.BLUE_BAND) return bBandNr; |
317 |
return -1; |
318 |
} |
319 |
|
320 |
/**
|
321 |
* @return Returns the dataType.
|
322 |
*/
|
323 |
public int getDataType() { |
324 |
return dataType;
|
325 |
} |
326 |
/**
|
327 |
* @param dataType The dataType to set.
|
328 |
*/
|
329 |
public void setDataType(int dataType) { |
330 |
this.dataType = dataType;
|
331 |
} |
332 |
|
333 |
public IObjList getObjects() {
|
334 |
// TODO hay que a?adir el raster a la lista de objetos
|
335 |
IObjList oList = new PxObjList(proj);
|
336 |
return oList;
|
337 |
} |
338 |
} |