gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / grid / GridImpl.java @ 859
History | View | Annotate | Download (38.1 KB)
1 |
/* gvSIG. Geographic Information System of the Valencian Government
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2007-2008 Infrastructures and Transports Department
|
4 |
* of the Valencian Government (CIT)
|
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU General Public License
|
8 |
* as published by the Free Software Foundation; either version 2
|
9 |
* of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 |
* GNU General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License
|
17 |
* along with this program; if not, write to the Free Software
|
18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
19 |
* MA 02110-1301, USA.
|
20 |
*
|
21 |
*/
|
22 |
package org.gvsig.raster.impl.grid; |
23 |
|
24 |
import java.util.Arrays; |
25 |
|
26 |
import org.gvsig.fmap.dal.coverage.RasterLibrary; |
27 |
import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
28 |
import org.gvsig.fmap.dal.coverage.datastruct.Extent; |
29 |
import org.gvsig.fmap.dal.coverage.datastruct.GridCell; |
30 |
import org.gvsig.fmap.dal.coverage.datastruct.GridExtent; |
31 |
import org.gvsig.fmap.dal.coverage.datastruct.NoData; |
32 |
import org.gvsig.fmap.dal.coverage.exception.GridException; |
33 |
import org.gvsig.fmap.dal.coverage.exception.OutOfGridException; |
34 |
import org.gvsig.fmap.dal.coverage.exception.ProcessInterruptedException; |
35 |
import org.gvsig.fmap.dal.coverage.exception.RasterBufferInvalidAccessException; |
36 |
import org.gvsig.fmap.dal.coverage.exception.RasterBufferInvalidException; |
37 |
import org.gvsig.fmap.dal.coverage.grid.Grid; |
38 |
import org.gvsig.fmap.dal.coverage.grid.RasterFilterList; |
39 |
import org.gvsig.fmap.dal.coverage.store.RasterDataStore; |
40 |
import org.gvsig.fmap.dal.coverage.store.props.BasicStats; |
41 |
import org.gvsig.fmap.dal.coverage.store.props.ColorTable; |
42 |
import org.gvsig.fmap.dal.coverage.store.props.Transparency; |
43 |
import org.gvsig.raster.impl.DefaultRasterManager; |
44 |
import org.gvsig.raster.impl.buffer.RasterBuffer; |
45 |
import org.gvsig.raster.impl.datastruct.ExtentImpl; |
46 |
import org.gvsig.raster.impl.grid.filter.DefaultRasterFilterList; |
47 |
import org.gvsig.raster.impl.store.QueryableRaster; |
48 |
import org.gvsig.raster.impl.store.properties.DataStoreColorTable; |
49 |
import org.gvsig.raster.impl.store.properties.DataStoreTransparency; |
50 |
|
51 |
/**
|
52 |
* Clase que representa una rejilla de datos raster. Este tipo de grid tiene el interfaz necesario
|
53 |
* de acceso a la informaci?n raster para aplicaciones de analisis raster. Contiene m?todos de acceso al
|
54 |
* dato tanto en lectura como en escritura y encapsula operaciones entre grids. Adem?s contiene
|
55 |
* objetos que contienen las caracter?sticas asociadas a ese grid. Sobre un grid pueden
|
56 |
* aplicarse tambi?n operaciones de filtrado.
|
57 |
*
|
58 |
* Podemos crear un Grid de cinco formas distitas:
|
59 |
* <UL>
|
60 |
* <LI>A partir de una fuente de datos (cargada en el constructor). Se har? una petici?n del extent pasado por par?metro con las bandas seleccionadas por par?metro.</LI>
|
61 |
* <LI>A partir de un extensi?n de capa, una extensi?n de vista, un tipo de dato y un n?mero de datos
|
62 |
* crea un Grid vacio util para escritura.</LI>
|
63 |
* <LI>A partir de una fuente de datos (cargados). Datasource se usa como buffer de datos cargados y se selecciona si queremos el reader interpolado.</LI>
|
64 |
* <LI>A partir de una fuente de datos (cargada en el constructor). Se har? una petici?n del extent completo de la fuente con las bandas seleccionadas por par?metro.</LI>
|
65 |
* <LI>A partir de una fuente de datos (cargada en el constructor). Se har? una petici?n del extent completo de la fuente con todas las bandas disponibles.</LI>
|
66 |
* </UL>
|
67 |
*
|
68 |
* @author Victor Olaya (volaya@ya.com)
|
69 |
* @author Nacho Brodin (nachobrodin@gmail.com)
|
70 |
*/
|
71 |
public class GridImpl implements Grid { |
72 |
|
73 |
public final static double DEG_45_IN_RAD = Math.PI / 180. * 45.; |
74 |
public final static double DEG_90_IN_RAD = Math.PI / 180. * 90.; |
75 |
public final static double DEG_180_IN_RAD = Math.PI ; |
76 |
public final static double DEG_270_IN_RAD = Math.PI / 180. * 270.; |
77 |
public final static double DEG_360_IN_RAD = Math.PI * 2.; |
78 |
|
79 |
/* neighbor's address*/ /* N NE E SE S SW W NW */ |
80 |
private final static int m_iOffsetX []= { 0, 1, 1, 1, 0, -1, -1, -1}; |
81 |
private final static int m_iOffsetY []= { 1, 1, 0, -1, -1, -1, 0, 1}; |
82 |
|
83 |
private double m_dDist[]; |
84 |
public double _2DX, _6DX, _DX_2, _4DX_2; |
85 |
|
86 |
private int[] bands = null; |
87 |
private int dataType = Buffer.TYPE_UNDEFINED; |
88 |
|
89 |
private Buffer rasterBuf = null; |
90 |
private GridReader reader = null; |
91 |
private GridWriter writer = null; |
92 |
private GridExtent windowExtent = null; |
93 |
private GridExtent layerExtent = null; |
94 |
private GridStatistic statistic = null; |
95 |
private ColorTable palette = null; |
96 |
private RasterFilterList filterList = null; |
97 |
|
98 |
|
99 |
|
100 |
/**
|
101 |
* Crea un grid a partir de un MultiRasterDataset. Usa el extent de la fuente de datos como
|
102 |
* extent completo y el extent pasado como par?metro como extensi?n de ventana.
|
103 |
*
|
104 |
* Cuando se construye el reader se carga el buffer con la extensi?n definida en windowExtent
|
105 |
* y las bandas especificadas en bands.
|
106 |
*
|
107 |
* @param IRasterDataSource datasets que proporcionan los datos
|
108 |
* @param bands n?mero de bandas requeridas
|
109 |
* @param windowExtent Extensi?n de la ventana. Si este par?metro es null se usar? el
|
110 |
* mismo que el de la capa.
|
111 |
*/
|
112 |
public GridImpl(RasterDataStore datasource, int[] bands, GridExtent windowExtent) |
113 |
throws RasterBufferInvalidException {
|
114 |
double cellSize[] = calcCellSize(datasource, |
115 |
datasource.getWidth(), |
116 |
datasource.getHeight()); |
117 |
layerExtent = new GridExtentImpl(datasource.getExtent(),
|
118 |
cellSize[0],
|
119 |
cellSize[1]);
|
120 |
if(datasource.getDataType() != null) |
121 |
dataType = datasource.getDataType()[0];
|
122 |
this.bands = bands;
|
123 |
|
124 |
if(windowExtent == null) |
125 |
this.windowExtent = layerExtent;
|
126 |
else
|
127 |
this.windowExtent = windowExtent;
|
128 |
|
129 |
if (this.windowExtent.fitsIn(layerExtent)) |
130 |
reader = new GridNotInterpolated(datasource, layerExtent, this.windowExtent, bands); |
131 |
else
|
132 |
reader = new GridInterpolated(datasource, layerExtent, this.windowExtent, bands); |
133 |
rasterBuf = datasource.getLastBuffer(); |
134 |
writer = new GridWriter(layerExtent, dataType, rasterBuf);
|
135 |
|
136 |
init(datasource); |
137 |
} |
138 |
|
139 |
/**
|
140 |
* Carga el buffer de datos desde el reader para poder escribir sobre los datos de
|
141 |
* la ventana original. Esto es ?til cuando el GridWriter se crea asociado a un raster
|
142 |
* pero el buffer est? vacio, por ejemplo en el caso de crear un GridInterpolated. Un
|
143 |
* GridInterpolated no carga ning?n buffer en memoria sino que accede a los datos en disco
|
144 |
* a medida que se le van solicitando. Por ello, no es posible modificarlos sino cargamos
|
145 |
* un buffer con los datos previamente.
|
146 |
*/
|
147 |
public void loadWriterData() throws GridException { |
148 |
rasterBuf = DefaultRasterManager.getInstance().createBuffer(dataType, reader.getNX(), reader.getNY(), bands.length, true);
|
149 |
writer = new GridWriter(windowExtent, dataType, rasterBuf);
|
150 |
int x = 0, y = 0; |
151 |
try{
|
152 |
switch(rasterBuf.getDataType()) {
|
153 |
case Buffer.TYPE_BYTE: for (x = 0; x < getNX(); x++) |
154 |
for (y = 0; y < getNY(); y++) |
155 |
writer.setCellValue(x, y, (reader.getCellValueAsByte(x, y))); |
156 |
break;
|
157 |
case Buffer.TYPE_SHORT:for (x = 0; x < getNX(); x++) |
158 |
for (y = 0; y < getNY(); y++) |
159 |
writer.setCellValue(x, y, (reader.getCellValueAsShort(x, y))); |
160 |
break;
|
161 |
case Buffer.TYPE_INT: for (x = 0; x < getNX(); x++) |
162 |
for (y = 0; y < getNY(); y++) |
163 |
writer.setCellValue(x, y, (reader.getCellValueAsInt(x, y))); |
164 |
break;
|
165 |
case Buffer.TYPE_FLOAT:for (x = 0; x < getNX(); x++) |
166 |
for (y = 0; y < getNY(); y++) |
167 |
writer.setCellValue(x, y, (reader.getCellValueAsFloat(x, y))); |
168 |
break;
|
169 |
case Buffer.TYPE_DOUBLE:for (x = 0; x < getNX(); x++) |
170 |
for (y = 0; y < getNY(); y++) |
171 |
writer.setCellValue(x, y, (reader.getCellValueAsDouble(x, y))); |
172 |
break;
|
173 |
} |
174 |
} catch (RasterBufferInvalidException e) {
|
175 |
throw new GridException("Buffer de datos no v?lido " + x + " " + y, e); |
176 |
} catch (OutOfGridException e1) {
|
177 |
throw new GridException("Acceso fuera de los l?mites del Grid " + x + " " + y, e1); |
178 |
} catch (RasterBufferInvalidAccessException e) {
|
179 |
throw new GridException("Acceso al grid no v?lido " + x + " " + y, e); |
180 |
} |
181 |
} |
182 |
|
183 |
/**
|
184 |
* Crea un grid vacio a partir de un extent y un tipo de datos. Se crea un buffer vacio en el
|
185 |
* que puede escribirse a trav?s del writer. Los datos escritos pueden ser consultados con el
|
186 |
* reader. No tiene una fuente de datos asociada ya que es un grid vacio basicamente para
|
187 |
* escritura.
|
188 |
* @param layerExtent Tama?o completo de la capa
|
189 |
* @param windowExtent Ventana de datos.
|
190 |
* @param dataType Tipo de datos del buffer
|
191 |
* @param bands n?mero de bandas requeridas y orden de dibujado en el buffer
|
192 |
*/
|
193 |
public GridImpl(GridExtent layerExtent,
|
194 |
GridExtent windowExtent, |
195 |
int dataType,
|
196 |
int[] bands) throws RasterBufferInvalidException { |
197 |
this.windowExtent = windowExtent;
|
198 |
this.layerExtent = layerExtent;
|
199 |
this.dataType = dataType;
|
200 |
|
201 |
rasterBuf = DefaultRasterManager.getInstance().createBuffer(dataType, layerExtent.getNX(), layerExtent.getNY(), bands.length, true);
|
202 |
|
203 |
if (windowExtent.fitsIn(layerExtent))
|
204 |
reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
|
205 |
else
|
206 |
reader = new GridInterpolated(rasterBuf, layerExtent, windowExtent, bands);
|
207 |
writer = new GridWriter(layerExtent, dataType, rasterBuf);
|
208 |
init(null);
|
209 |
} |
210 |
|
211 |
/**
|
212 |
* Crea un grid a partir de un BufferFactory. El buffer debe estar cargado de datos y el extent
|
213 |
* de este viene definido en el par?metro windowExtent.
|
214 |
* @param bufferFactory Fuente de datos
|
215 |
* @param windowExtent Extent de los datos cargados en bufferFactory
|
216 |
* @param notInterp Si es true fuerza a que el reader sea sin interpolaci?n. Si es false decide si
|
217 |
* el reader es interpolado o no a partir de los extents de capa y la ventana seleccionada.
|
218 |
*/
|
219 |
public GridImpl(Buffer buf, RasterDataStore datasource, boolean notInterp) { |
220 |
double cellSize[] = calcCellSize(datasource, |
221 |
datasource.getWidth(), |
222 |
datasource.getHeight()); |
223 |
this.layerExtent = new GridExtentImpl(datasource.getExtent(), |
224 |
cellSize[0],
|
225 |
cellSize[1]);
|
226 |
if(datasource.getDataType() != null) |
227 |
dataType = datasource.getDataType()[0];
|
228 |
|
229 |
if(datasource instanceof QueryableRaster) |
230 |
bands = ((QueryableRaster)datasource).getDrawableBands(); |
231 |
else {
|
232 |
bands = new int[datasource.getBandCount()]; |
233 |
for (int i = 0; i < bands.length; i++) |
234 |
bands[i] = i; |
235 |
} |
236 |
|
237 |
|
238 |
this.windowExtent = new GridExtentImpl( new ExtentImpl(buf.getDataExtent()), |
239 |
cellSize[0],
|
240 |
cellSize[1]);
|
241 |
|
242 |
rasterBuf = buf; |
243 |
|
244 |
if(notInterp)
|
245 |
reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
|
246 |
else if (windowExtent.fitsIn(layerExtent)) |
247 |
reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
|
248 |
else
|
249 |
reader = new GridInterpolated(rasterBuf, layerExtent, windowExtent, bands);
|
250 |
writer = new GridWriter(layerExtent, dataType, rasterBuf);
|
251 |
init(datasource); |
252 |
} |
253 |
|
254 |
/**
|
255 |
* Crea un grid a partir de un BufferFactory. Se har? una petici?n del extent completo de la fuente.
|
256 |
* bufferFactory tiene asociada una fuente de datos pero se ignorar? si tiene el buffer lleno. La instanciaci?n
|
257 |
* de GridNotInterpolated har? que se haga la petici?n para cargar raster completo.
|
258 |
* @param bufferFactory Fuente de datos
|
259 |
* @param bands n?mero de bandas requeridas y orden de dibujado en el buffer
|
260 |
*/
|
261 |
public GridImpl(RasterDataStore datasource, int[] bands) |
262 |
throws RasterBufferInvalidException{
|
263 |
//La petici?n es del raster completo
|
264 |
double cellSize[] = calcCellSize(datasource, |
265 |
datasource.getWidth(), |
266 |
datasource.getHeight()); |
267 |
windowExtent = layerExtent = new GridExtentImpl(datasource.getExtent(),
|
268 |
cellSize[0],
|
269 |
cellSize[1]);
|
270 |
if(datasource.getDataType() != null) |
271 |
dataType = datasource.getDataType()[0];
|
272 |
this.bands = bands;
|
273 |
|
274 |
reader = new GridNotInterpolated(datasource, layerExtent, windowExtent, bands);
|
275 |
rasterBuf = datasource.getLastBuffer(); |
276 |
writer = new GridWriter(windowExtent, dataType, rasterBuf);
|
277 |
|
278 |
init(datasource); |
279 |
} |
280 |
|
281 |
/**
|
282 |
* Crea un grid a partir de un BufferFactory. Se har? una petici?n del extent completo de la fuente.
|
283 |
* bufferFactory tiene asociada una fuente de datos pero se ignorar? si tiene el buffer lleno. La instanciaci?n
|
284 |
* de GridNotInterpolated har? que se haga la petici?n para cargar raster completo. El buffer se cargar?
|
285 |
* con todas las bandas disponibles.
|
286 |
* @param datasource Fuente de datos
|
287 |
*/
|
288 |
public GridImpl(RasterDataStore datasource) throws RasterBufferInvalidException { |
289 |
//La petici?n es del raster completo
|
290 |
double cellSize[] = calcCellSize( datasource, |
291 |
datasource.getWidth(), |
292 |
datasource.getHeight()); |
293 |
windowExtent = layerExtent = new GridExtentImpl(datasource.getExtent(),
|
294 |
cellSize[0],
|
295 |
cellSize[1]);
|
296 |
if(datasource.getDataType() != null) |
297 |
dataType = datasource.getDataType()[0];
|
298 |
|
299 |
bands = new int[datasource.getBandCount()]; |
300 |
for(int i = 0; i < datasource.getBandCount(); i ++) |
301 |
bands[i] = i; |
302 |
reader = new GridNotInterpolated(datasource, layerExtent, windowExtent, bands);
|
303 |
rasterBuf = datasource.getLastBuffer(); |
304 |
writer = new GridWriter(windowExtent, dataType, rasterBuf);
|
305 |
|
306 |
init(datasource); |
307 |
} |
308 |
|
309 |
/**
|
310 |
* Calcula el tama?o de celda a partir de un dataset, un ancho y un alto en pixeles
|
311 |
* @return
|
312 |
*/
|
313 |
private double[] calcCellSize(RasterDataStore mDataset, double w, double h) { |
314 |
double dCellsize[] = new double[2]; |
315 |
try {
|
316 |
Extent e = mDataset.getExtent(); |
317 |
dCellsize[0] = (e.getLRX() - e.getULX()) / w;
|
318 |
dCellsize[1] = (e.getLRY() - e.getULY()) / h;
|
319 |
|
320 |
return dCellsize;
|
321 |
} catch (NullPointerException e) { |
322 |
dCellsize[0] = 1; |
323 |
dCellsize[1] = 1; |
324 |
return dCellsize;
|
325 |
} |
326 |
} |
327 |
|
328 |
/**
|
329 |
* Selecciona la forma de obtener datos con o sin interpolaci?n. Si pasamos el par?metro
|
330 |
* false al aplicar un m?todo de consulta de datos este ser? aplicado sin interpolaci?n.
|
331 |
* @param interpolation
|
332 |
*/
|
333 |
public void switchToInterpolationMethod(boolean interpolation){ |
334 |
//GridExtent layer = new GridExtent(0, 0, rasterBuf.getWidth(), rasterBuf.getHeight(), 1);
|
335 |
if(interpolation)
|
336 |
reader = new GridInterpolated(rasterBuf, layerExtent, windowExtent, bands);
|
337 |
else
|
338 |
reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
|
339 |
init(null);
|
340 |
} |
341 |
|
342 |
/**
|
343 |
* Inicializaci?n de constantes
|
344 |
*/
|
345 |
private void init(RasterDataStore ds) { |
346 |
int i;
|
347 |
Transparency transparency = null; |
348 |
|
349 |
double dCellSize = getCellSize();
|
350 |
|
351 |
statistic = new GridStatistic(this); |
352 |
if (ds == null) |
353 |
transparency = new DataStoreTransparency();
|
354 |
else {
|
355 |
transparency = ds.getTransparency().cloneTransparency(); |
356 |
this.palette = new DataStoreColorTable(ds.getColorTable()); |
357 |
} |
358 |
filterList = new DefaultRasterFilterList();
|
359 |
if (ds != null) { |
360 |
filterList.addEnvParam("IStatistics", ds.getStatistics());
|
361 |
filterList.addEnvParam("MultiRasterDataset", ds);
|
362 |
} |
363 |
filterList.addEnvParam("Transparency", transparency);
|
364 |
if(rasterBuf != null) |
365 |
filterList.setInitRasterBuf(rasterBuf); |
366 |
|
367 |
m_dDist = new double[8]; |
368 |
|
369 |
for (i = 0; i < 8; i++) |
370 |
m_dDist[i] = Math.sqrt ( m_iOffsetX[i] * dCellSize * m_iOffsetX[i] * dCellSize
|
371 |
+ m_iOffsetY[i] * dCellSize * m_iOffsetY[i] * dCellSize ); |
372 |
|
373 |
_2DX = dCellSize * 2.0;
|
374 |
_6DX = dCellSize * 6.0;
|
375 |
_DX_2 = dCellSize * dCellSize; |
376 |
_4DX_2 = 4.0 * _DX_2;
|
377 |
} |
378 |
|
379 |
/*
|
380 |
* (non-Javadoc)
|
381 |
* @see org.gvsig.fmap.dal.coverage.grid.Grid#getBandCount()
|
382 |
*/
|
383 |
public int getBandCount() { |
384 |
if(rasterBuf != null) |
385 |
return rasterBuf.getBandCount();
|
386 |
return 0; |
387 |
} |
388 |
|
389 |
//************* Write Services *********************
|
390 |
|
391 |
/*
|
392 |
* (non-Javadoc)
|
393 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(byte)
|
394 |
*/
|
395 |
public void assign(byte value)throws GridException { |
396 |
try {
|
397 |
writer.assign(value); |
398 |
} catch (RasterBufferInvalidAccessException e) {
|
399 |
throw new GridException("Error wrinting buffer"); |
400 |
} |
401 |
} |
402 |
|
403 |
/*
|
404 |
* (non-Javadoc)
|
405 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(short)
|
406 |
*/
|
407 |
public void assign(short value)throws GridException { |
408 |
try {
|
409 |
writer.assign(value); |
410 |
} catch (RasterBufferInvalidAccessException e) {
|
411 |
throw new GridException("Error wrinting buffer"); |
412 |
} |
413 |
} |
414 |
|
415 |
/*
|
416 |
* (non-Javadoc)
|
417 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(int)
|
418 |
*/
|
419 |
public void assign(int value)throws GridException { |
420 |
try {
|
421 |
writer.assign(value); |
422 |
} catch (RasterBufferInvalidAccessException e) {
|
423 |
throw new GridException("Error wrinting buffer"); |
424 |
} |
425 |
} |
426 |
|
427 |
/*
|
428 |
* (non-Javadoc)
|
429 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(float)
|
430 |
*/
|
431 |
public void assign(float value)throws GridException { |
432 |
try {
|
433 |
writer.assign(value); |
434 |
} catch (RasterBufferInvalidAccessException e) {
|
435 |
throw new GridException("Error wrinting buffer"); |
436 |
} |
437 |
} |
438 |
|
439 |
/*
|
440 |
* (non-Javadoc)
|
441 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(double)
|
442 |
*/
|
443 |
public void assign(double value)throws GridException { |
444 |
try {
|
445 |
writer.assign(value); |
446 |
} catch (RasterBufferInvalidAccessException e) {
|
447 |
throw new GridException("Error wrinting buffer"); |
448 |
} |
449 |
} |
450 |
|
451 |
/*
|
452 |
* (non-Javadoc)
|
453 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(org.gvsig.fmap.dataaccess.BufferFactory)
|
454 |
*/
|
455 |
public void assign(RasterDataStore dSource) throws GridException { |
456 |
Grid window = null;
|
457 |
try {
|
458 |
window = new GridImpl(dSource, bands, windowExtent);
|
459 |
write(window); |
460 |
writer.setNoDataValue(window.getNoDataValue()); |
461 |
} catch (RasterBufferInvalidException e) {
|
462 |
throw new GridException("Error writing buffer"); |
463 |
} |
464 |
} |
465 |
|
466 |
/*
|
467 |
* (non-Javadoc)
|
468 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(org.gvsig.fmap.grid.Grid)
|
469 |
*/
|
470 |
public void assign(Grid driver) throws GridException { |
471 |
if (driver.getGridExtent().equals(layerExtent)) {
|
472 |
write(driver); |
473 |
writer.setNoDataValue(driver.getNoDataValue()); |
474 |
} |
475 |
} |
476 |
|
477 |
/**
|
478 |
* Sobreescribe los datos del grid actual con los datos del grid pasado por par?metro
|
479 |
* @param g Grid desde donde se obtienen los datos
|
480 |
*/
|
481 |
private void write(Grid g) throws GridException { |
482 |
try{
|
483 |
switch(rasterBuf.getDataType()){
|
484 |
case Buffer.TYPE_BYTE: for (int x = 0; x < g.getNX(); x++) |
485 |
for (int y = 0; y < g.getNY(); y++) |
486 |
writer.setCellValue(x, y, g.getCellValueAsByte(x, y)); |
487 |
break;
|
488 |
case Buffer.TYPE_SHORT:for (int x = 0; x < g.getNX(); x++) |
489 |
for (int y = 0; y < g.getNY(); y++) |
490 |
writer.setCellValue(x, y, g.getCellValueAsShort(x, y)); |
491 |
break;
|
492 |
case Buffer.TYPE_INT: for (int x = 0; x < g.getNX(); x++) |
493 |
for (int y = 0; y < g.getNY(); y++) |
494 |
writer.setCellValue(x, y, g.getCellValueAsInt(x, y)); |
495 |
break;
|
496 |
case Buffer.TYPE_FLOAT:for (int x = 0; x < g.getNX(); x++) |
497 |
for (int y = 0; y < g.getNY(); y++) |
498 |
writer.setCellValue(x, y, g.getCellValueAsFloat(x, y)); |
499 |
break;
|
500 |
case Buffer.TYPE_DOUBLE:for (int x = 0; x < g.getNX(); x++) |
501 |
for (int y = 0; y < g.getNY(); y++) |
502 |
writer.setCellValue(x, y, g.getCellValueAsDouble(x, y)); |
503 |
break;
|
504 |
} |
505 |
} catch (OutOfGridException e) {
|
506 |
throw new GridException(""); |
507 |
} |
508 |
} |
509 |
|
510 |
/*
|
511 |
* (non-Javadoc)
|
512 |
* @see org.gvsig.fmap.grid.IWritableGrid#assignNoData()
|
513 |
*/
|
514 |
public void assignNoData(){ |
515 |
try {
|
516 |
if(!rasterBuf.getNoDataValue().isDefined())
|
517 |
return;
|
518 |
|
519 |
switch(rasterBuf.getDataType()){
|
520 |
case Buffer.TYPE_BYTE: writer.assign((byte)rasterBuf.getNoDataValue().getValue().byteValue());break; |
521 |
case Buffer.TYPE_SHORT: writer.assign((short)rasterBuf.getNoDataValue().getValue().shortValue());break; |
522 |
case Buffer.TYPE_INT: writer.assign((int)rasterBuf.getNoDataValue().getValue().intValue());break; |
523 |
case Buffer.TYPE_FLOAT: writer.assign((float)rasterBuf.getNoDataValue().getValue().floatValue());break; |
524 |
case Buffer.TYPE_DOUBLE: writer.assign(rasterBuf.getNoDataValue().getValue().doubleValue());break; |
525 |
} |
526 |
} catch (RasterBufferInvalidAccessException e) {
|
527 |
//No hacemos nada. El tipo de dato al que se accede no es controlado por el usuario por lo
|
528 |
//que no le mandamos la excepci?n hacia arriba.
|
529 |
e.printStackTrace(); |
530 |
} |
531 |
} |
532 |
|
533 |
/*
|
534 |
* (non-Javadoc)
|
535 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, byte)
|
536 |
*/
|
537 |
public void setCellValue(int x, int y, byte value)throws OutOfGridException{ |
538 |
writer.setCellValue(x, y, value); |
539 |
} |
540 |
|
541 |
/*
|
542 |
* (non-Javadoc)
|
543 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, short)
|
544 |
*/
|
545 |
public void setCellValue(int x, int y, short value)throws OutOfGridException{ |
546 |
writer.setCellValue(x, y, value); |
547 |
} |
548 |
|
549 |
/*
|
550 |
* (non-Javadoc)
|
551 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, int)
|
552 |
*/
|
553 |
public void setCellValue(int x, int y, int value)throws OutOfGridException{ |
554 |
writer.setCellValue(x, y, value); |
555 |
} |
556 |
|
557 |
/*
|
558 |
* (non-Javadoc)
|
559 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, float)
|
560 |
*/
|
561 |
public void setCellValue(int x, int y, float value)throws OutOfGridException{ |
562 |
writer.setCellValue(x, y, value); |
563 |
} |
564 |
|
565 |
/*
|
566 |
* (non-Javadoc)
|
567 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, double)
|
568 |
*/
|
569 |
public void setCellValue(int x, int y, double value)throws OutOfGridException{ |
570 |
writer.setCellValue(x, y, value); |
571 |
} |
572 |
|
573 |
/*
|
574 |
* (non-Javadoc)
|
575 |
* @see org.gvsig.fmap.grid.IWritableGrid#add(org.gvsig.fmap.grid.Grid)
|
576 |
*/
|
577 |
public void add(Grid g) throws GridException { |
578 |
if (g.getGridExtent().equals(getGridExtent())) {
|
579 |
boolean interp = (reader instanceof GridInterpolated); |
580 |
switchToInterpolationMethod(false);
|
581 |
try{
|
582 |
switch(rasterBuf.getDataType()){
|
583 |
case Buffer.TYPE_BYTE: for (int x = 0; x < g.getNX(); x++) |
584 |
for (int y = 0; y < g.getNY(); y++) |
585 |
writer.setCellValue(x, y, reader.getCellValueAsByte(x, y) + g.getCellValueAsByte(x,y)); |
586 |
break;
|
587 |
case Buffer.TYPE_SHORT:for (int x = 0; x < g.getNX(); x++) |
588 |
for (int y = 0; y < g.getNY(); y++) |
589 |
writer.setCellValue(x, y, reader.getCellValueAsShort(x, y) + g.getCellValueAsShort(x,y)); |
590 |
break;
|
591 |
case Buffer.TYPE_INT: for (int x = 0; x < g.getNX(); x++) |
592 |
for (int y = 0; y < g.getNY(); y++) |
593 |
writer.setCellValue(x, y, reader.getCellValueAsInt(x, y) + g.getCellValueAsInt(x,y)); |
594 |
break;
|
595 |
case Buffer.TYPE_FLOAT:for (int x = 0; x < g.getNX(); x++) |
596 |
for (int y = 0; y < g.getNY(); y++) |
597 |
writer.setCellValue(x, y, reader.getCellValueAsFloat(x, y) + g.getCellValueAsFloat(x,y)); |
598 |
break;
|
599 |
case Buffer.TYPE_DOUBLE:for (int x = 0; x < g.getNX(); x++) |
600 |
for (int y = 0; y < g.getNY(); y++) |
601 |
writer.setCellValue(x, y, reader.getCellValueAsDouble(x, y) + g.getCellValueAsDouble(x,y)); |
602 |
break;
|
603 |
} |
604 |
} catch (OutOfGridException e) {
|
605 |
throw new GridException(""); |
606 |
} catch (RasterBufferInvalidAccessException e1) {
|
607 |
throw new GridException(""); |
608 |
} catch (RasterBufferInvalidException e) {
|
609 |
throw new GridException(""); |
610 |
} |
611 |
switchToInterpolationMethod(interp); |
612 |
} |
613 |
} |
614 |
|
615 |
/*
|
616 |
* (non-Javadoc)
|
617 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, byte)
|
618 |
*/
|
619 |
public void addToCellValue(int x, int y, byte value) |
620 |
throws GridException {
|
621 |
try {
|
622 |
writer.setCellValue(x, y, (byte)(reader.getCellValueAsByte(x, y) + value));
|
623 |
} catch (OutOfGridException e) {
|
624 |
throw new GridException(""); |
625 |
} catch (RasterBufferInvalidAccessException e) {
|
626 |
throw new GridException(""); |
627 |
} catch (RasterBufferInvalidException e) {
|
628 |
throw new GridException(""); |
629 |
} |
630 |
} |
631 |
|
632 |
/*
|
633 |
* (non-Javadoc)
|
634 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, short)
|
635 |
*/
|
636 |
public void addToCellValue(int x, int y, short value) |
637 |
throws GridException {
|
638 |
try {
|
639 |
writer.setCellValue(x, y, (short)(reader.getCellValueAsShort(x, y) + value));
|
640 |
} catch (OutOfGridException e) {
|
641 |
throw new GridException(""); |
642 |
} catch (RasterBufferInvalidAccessException e) {
|
643 |
throw new GridException(""); |
644 |
} catch (RasterBufferInvalidException e) {
|
645 |
throw new GridException(""); |
646 |
} |
647 |
} |
648 |
|
649 |
/*
|
650 |
* (non-Javadoc)
|
651 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, int)
|
652 |
*/
|
653 |
public void addToCellValue(int x, int y, int value) |
654 |
throws GridException {
|
655 |
try {
|
656 |
writer.setCellValue(x, y, (reader.getCellValueAsInt(x, y) + value)); |
657 |
} catch (OutOfGridException e) {
|
658 |
throw new GridException(""); |
659 |
} catch (RasterBufferInvalidAccessException e) {
|
660 |
throw new GridException(""); |
661 |
} catch (RasterBufferInvalidException e) {
|
662 |
throw new GridException(""); |
663 |
} |
664 |
} |
665 |
|
666 |
/*
|
667 |
* (non-Javadoc)
|
668 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, float)
|
669 |
*/
|
670 |
public void addToCellValue(int x, int y, float value) |
671 |
throws GridException {
|
672 |
try {
|
673 |
writer.setCellValue(x, y, (reader.getCellValueAsFloat(x, y) + value)); |
674 |
} catch (OutOfGridException e) {
|
675 |
throw new GridException(""); |
676 |
} catch (RasterBufferInvalidAccessException e) {
|
677 |
throw new GridException(""); |
678 |
} catch (RasterBufferInvalidException e) {
|
679 |
throw new GridException(""); |
680 |
} |
681 |
} |
682 |
|
683 |
/*
|
684 |
* (non-Javadoc)
|
685 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, double)
|
686 |
*/
|
687 |
public void addToCellValue(int x, int y, double value) |
688 |
throws GridException {
|
689 |
try {
|
690 |
writer.setCellValue(x, y, (reader.getCellValueAsDouble(x, y) + value)); |
691 |
} catch (OutOfGridException e) {
|
692 |
throw new GridException(""); |
693 |
} catch (RasterBufferInvalidAccessException e) {
|
694 |
throw new GridException(""); |
695 |
} catch (RasterBufferInvalidException e) {
|
696 |
throw new GridException(""); |
697 |
} |
698 |
} |
699 |
|
700 |
/*
|
701 |
* (non-Javadoc)
|
702 |
* @see org.gvsig.fmap.grid.IWritableGrid#multiply(double)
|
703 |
*/
|
704 |
public void multiply(double value) throws GridException { |
705 |
boolean interp = (reader instanceof GridInterpolated); |
706 |
switchToInterpolationMethod(false);
|
707 |
try{
|
708 |
switch(rasterBuf.getDataType()){
|
709 |
case Buffer.TYPE_BYTE: for (int x = 0; x < getNX(); x++) |
710 |
for (int y = 0; y < getNY(); y++) |
711 |
writer.setCellValue(x, y, (byte)(reader.getCellValueAsByte(x, y) * value));
|
712 |
break;
|
713 |
case Buffer.TYPE_SHORT:for (int x = 0; x < getNX(); x++) |
714 |
for (int y = 0; y < getNY(); y++) |
715 |
writer.setCellValue(x, y, (short)(reader.getCellValueAsShort(x, y) * value));
|
716 |
break;
|
717 |
case Buffer.TYPE_INT: for (int x = 0; x < getNX(); x++) |
718 |
for (int y = 0; y < getNY(); y++) |
719 |
writer.setCellValue(x, y, (int)(reader.getCellValueAsInt(x, y) * value));
|
720 |
break;
|
721 |
case Buffer.TYPE_FLOAT:for (int x = 0; x < getNX(); x++) |
722 |
for (int y = 0; y < getNY(); y++) |
723 |
writer.setCellValue(x, y, (float)(reader.getCellValueAsFloat(x, y) * value));
|
724 |
break;
|
725 |
case Buffer.TYPE_DOUBLE:for (int x = 0; x < getNX(); x++) |
726 |
for (int y = 0; y < getNY(); y++) |
727 |
writer.setCellValue(x, y, (reader.getCellValueAsDouble(x, y) * value)); |
728 |
break;
|
729 |
} |
730 |
} catch (RasterBufferInvalidException e) {
|
731 |
throw new GridException("Buffer de datos no v?lido", e); |
732 |
} catch (OutOfGridException e1) {
|
733 |
throw new GridException("Acceso fuera de los l?mites del Grid", e1); |
734 |
} catch (RasterBufferInvalidAccessException e) {
|
735 |
throw new GridException("Acceso al grid no v?lido", e); |
736 |
} |
737 |
//Restauramos el reader que hab?a
|
738 |
switchToInterpolationMethod(interp); |
739 |
} |
740 |
|
741 |
/*
|
742 |
* (non-Javadoc)
|
743 |
* @see org.gvsig.fmap.grid.IWritableGrid#setNoDataValue(double)
|
744 |
*/
|
745 |
public void setNoDataValue(NoData dNoDataValue) { |
746 |
writer.setNoDataValue(dNoDataValue); |
747 |
} |
748 |
|
749 |
/*
|
750 |
* (non-Javadoc)
|
751 |
* @see org.gvsig.fmap.grid.IWritableGrid#setNoData(int, int)
|
752 |
*/
|
753 |
public void setNoData(int x, int y){ |
754 |
writer.setNoData(x, y); |
755 |
} |
756 |
|
757 |
//************* Query Services *********************
|
758 |
|
759 |
/*
|
760 |
* (non-Javadoc)
|
761 |
* @see org.gvsig.fmap.grid.IQueryableGrid#isNoDataValue(double)
|
762 |
*/
|
763 |
public boolean isNoDataValue(double noDataValue){ |
764 |
return (reader.getNoDataValue() == noDataValue);
|
765 |
} |
766 |
|
767 |
/*
|
768 |
* (non-Javadoc)
|
769 |
* @see org.gvsig.fmap.grid.IQueryableGrid#isInGrid(int, int)
|
770 |
*/
|
771 |
public boolean isInGrid(int x, int y){ |
772 |
return reader.isCellInGrid(x, y);
|
773 |
} |
774 |
|
775 |
/*
|
776 |
* (non-Javadoc)
|
777 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellSize()
|
778 |
*/
|
779 |
public double getCellSize() { |
780 |
return reader.getCellSize();
|
781 |
} |
782 |
|
783 |
/*
|
784 |
* (non-Javadoc)
|
785 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsByte(int, int)
|
786 |
*/
|
787 |
public byte getCellValueAsByte(int x, int y)throws GridException { |
788 |
try {
|
789 |
return reader.getCellValueAsByte(x, y);
|
790 |
} catch (RasterBufferInvalidAccessException e) {
|
791 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
792 |
} catch (RasterBufferInvalidException e) {
|
793 |
throw new GridException("Buffer not valid"); |
794 |
} |
795 |
} |
796 |
|
797 |
/*
|
798 |
* (non-Javadoc)
|
799 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsShort(int, int)
|
800 |
*/
|
801 |
public short getCellValueAsShort(int x, int y)throws GridException { |
802 |
try {
|
803 |
return reader.getCellValueAsShort(x, y);
|
804 |
} catch (RasterBufferInvalidAccessException e) {
|
805 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
806 |
} catch (RasterBufferInvalidException e) {
|
807 |
throw new GridException("Buffer not valid"); |
808 |
} |
809 |
} |
810 |
|
811 |
/*
|
812 |
* (non-Javadoc)
|
813 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsInt(int, int)
|
814 |
*/
|
815 |
public int getCellValueAsInt(int x, int y)throws GridException { |
816 |
try {
|
817 |
return reader.getCellValueAsInt(x, y);
|
818 |
} catch (RasterBufferInvalidAccessException e) {
|
819 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
820 |
} catch (RasterBufferInvalidException e) {
|
821 |
throw new GridException("Buffer not valid"); |
822 |
} |
823 |
} |
824 |
|
825 |
/*
|
826 |
* (non-Javadoc)
|
827 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsFloat(int, int)
|
828 |
*/
|
829 |
public float getCellValueAsFloat(int x, int y)throws GridException { |
830 |
try {
|
831 |
return reader.getCellValueAsFloat(x, y);
|
832 |
} catch (RasterBufferInvalidAccessException e) {
|
833 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
834 |
} catch (RasterBufferInvalidException e) {
|
835 |
throw new GridException("Buffer not valid"); |
836 |
} |
837 |
} |
838 |
|
839 |
/*
|
840 |
* (non-Javadoc)
|
841 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsDouble(int, int)
|
842 |
*/
|
843 |
public double getCellValueAsDouble(int x, int y)throws GridException { |
844 |
try {
|
845 |
return reader.getCellValueAsDouble(x, y);
|
846 |
} catch (RasterBufferInvalidAccessException e) {
|
847 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
848 |
} catch (RasterBufferInvalidException e) {
|
849 |
throw new GridException("Buffer not valid"); |
850 |
} |
851 |
} |
852 |
|
853 |
/*
|
854 |
* (non-Javadoc)
|
855 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsDouble(int, int)
|
856 |
*/
|
857 |
public double getCellValue(int x, int y)throws GridException { |
858 |
try {
|
859 |
return reader.getCellValue(x, y);
|
860 |
} catch (RasterBufferInvalidAccessException e) {
|
861 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
862 |
} catch (RasterBufferInvalidException e) {
|
863 |
throw new GridException("Buffer not valid"); |
864 |
} |
865 |
} |
866 |
|
867 |
/*
|
868 |
* (non-Javadoc)
|
869 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getNoDataValue()
|
870 |
*/
|
871 |
public NoData getNoDataValue() {
|
872 |
return rasterBuf.getNoDataValue();
|
873 |
} |
874 |
|
875 |
/*
|
876 |
* (non-Javadoc)
|
877 |
* @see org.gvsig.fmap.grid.IQueryableGrid#setInterpolationMethod(int)
|
878 |
*/
|
879 |
public void setInterpolationMethod(int iMethod){ |
880 |
if (reader instanceof GridInterpolated) |
881 |
((GridInterpolated) reader).setInterpolationMethod(iMethod); |
882 |
else{
|
883 |
this.switchToInterpolationMethod(true); |
884 |
((GridInterpolated) reader).setInterpolationMethod(iMethod); |
885 |
} |
886 |
} |
887 |
|
888 |
/*
|
889 |
* (non-Javadoc)
|
890 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getNX()
|
891 |
*/
|
892 |
public int getNX(){ |
893 |
return reader.getNX();
|
894 |
} |
895 |
|
896 |
/*
|
897 |
* (non-Javadoc)
|
898 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getNY()
|
899 |
*/
|
900 |
public int getNY(){ |
901 |
return reader.getNY();
|
902 |
} |
903 |
|
904 |
/*
|
905 |
* (non-Javadoc)
|
906 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getLayerNX()
|
907 |
*/
|
908 |
public int getLayerNX(){ |
909 |
return layerExtent.getNX();
|
910 |
} |
911 |
|
912 |
/*
|
913 |
* (non-Javadoc)
|
914 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getLayerNY()
|
915 |
*/
|
916 |
public int getLayerNY(){ |
917 |
return layerExtent.getNY();
|
918 |
} |
919 |
|
920 |
public int getDataType(){ |
921 |
return dataType;
|
922 |
} |
923 |
|
924 |
private boolean getSubMatrix3x3(int x, int y, double subMatrix[]) |
925 |
throws GridException {
|
926 |
int i;
|
927 |
int iDir;
|
928 |
double z, z2;
|
929 |
|
930 |
z = getCellValueAsDouble(x, y); |
931 |
|
932 |
if(isNoDataValue(z))
|
933 |
return false; |
934 |
else {
|
935 |
//SubMatrix[4] = 0.0;
|
936 |
for(i = 0; i < 4; i++) { |
937 |
iDir = 2 * i;
|
938 |
z2 = getCellValueAsDouble(x + m_iOffsetX[iDir], y + m_iOffsetY[iDir]); |
939 |
if( !isNoDataValue(z2))
|
940 |
subMatrix[i] = z2 - z; |
941 |
else {
|
942 |
z2 = getCellValueAsDouble(x + m_iOffsetX[(iDir + 4) % 8], y + m_iOffsetY[(iDir + 4) % 8]); |
943 |
if( !isNoDataValue(z2))
|
944 |
subMatrix[i] = z - z2; |
945 |
else
|
946 |
subMatrix[i] = 0.0;
|
947 |
} |
948 |
} |
949 |
|
950 |
return true; |
951 |
} |
952 |
} |
953 |
|
954 |
/*
|
955 |
* (non-Javadoc)
|
956 |
* @see org.gvsig.raster.grid.IQueryableGrid#getSlope(int, int)
|
957 |
*/
|
958 |
public double getSlope(int x, int y)throws GridException { |
959 |
double zm[], G, H; |
960 |
|
961 |
zm = new double[4]; |
962 |
|
963 |
try {
|
964 |
if( getSubMatrix3x3(x, y, zm) ) {
|
965 |
G = (zm[0] - zm[2]) / _2DX; |
966 |
H = (zm[1] - zm[3]) / _2DX; |
967 |
return Math.atan(Math.sqrt(G * G + H * H)); |
968 |
} else
|
969 |
return rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().doubleValue() : RasterLibrary.defaultDoubleNoDataValue;
|
970 |
} catch (GridException e) {
|
971 |
throw new GridException("Problems accesing 3x3 submatrix"); |
972 |
} |
973 |
} |
974 |
|
975 |
/*
|
976 |
* (non-Javadoc)
|
977 |
* @see org.gvsig.raster.grid.IQueryableGrid#getAspect(int, int)
|
978 |
*/
|
979 |
public double getAspect(int x, int y)throws GridException { |
980 |
double zm[], G, H, dAspect; |
981 |
zm = new double[4]; |
982 |
|
983 |
try {
|
984 |
if( getSubMatrix3x3(x, y, zm) ) {
|
985 |
G = (zm[0] - zm[2]) / _2DX; |
986 |
H = (zm[1] - zm[3]) / _2DX; |
987 |
if(G != 0.0) |
988 |
dAspect = DEG_180_IN_RAD + Math.atan2(H, G);
|
989 |
else
|
990 |
dAspect = H > 0.0 ? DEG_270_IN_RAD : (H < 0.0 ? DEG_90_IN_RAD : -1.0); |
991 |
return dAspect;
|
992 |
} |
993 |
else
|
994 |
return rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().doubleValue() : RasterLibrary.defaultDoubleNoDataValue;
|
995 |
} catch (GridException e) {
|
996 |
throw new GridException("Problems accesing 3x3 submatrix"); |
997 |
} |
998 |
} |
999 |
|
1000 |
public static int getXOffsetInDir(int iDir){ |
1001 |
return m_iOffsetX[iDir];
|
1002 |
} |
1003 |
|
1004 |
public static int getYOffsetInDir(int iDir){ |
1005 |
return m_iOffsetY[iDir];
|
1006 |
} |
1007 |
|
1008 |
public double getDistToNeighborInDir(int iDir){ |
1009 |
return m_dDist[iDir];
|
1010 |
} |
1011 |
|
1012 |
public static double getUnitDistToNeighborInDir(int iDir){ |
1013 |
return( (iDir % 2 != 0) ? Math.sqrt(2.0) : 1.0 ); |
1014 |
} |
1015 |
|
1016 |
/*
|
1017 |
* (non-Javadoc)
|
1018 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getDirToNextDownslopeCell(int, int)
|
1019 |
*/
|
1020 |
public int getDirToNextDownslopeCell(int x, int y)throws GridException{ |
1021 |
return getDirToNextDownslopeCell(x, y, true); |
1022 |
} |
1023 |
|
1024 |
/*
|
1025 |
* (non-Javadoc)
|
1026 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getDirToNextDownslopeCell(int, int, boolean)
|
1027 |
*/
|
1028 |
public int getDirToNextDownslopeCell(int x, int y, boolean bForceDirToNoDataCell) |
1029 |
throws GridException{
|
1030 |
|
1031 |
int i, iDir;
|
1032 |
double z, z2, dSlope, dMaxSlope;
|
1033 |
|
1034 |
z = getCellValueAsDouble(x, y); |
1035 |
|
1036 |
if(isNoDataValue(z))
|
1037 |
return -1; |
1038 |
|
1039 |
dMaxSlope = 0.0;
|
1040 |
for(iDir=-1, i=0; i<8; i++) { |
1041 |
z2 = getCellValueAsDouble(x + m_iOffsetX[i], y + m_iOffsetY[i]); |
1042 |
if(isNoDataValue(z2)) {
|
1043 |
if (bForceDirToNoDataCell)
|
1044 |
return i;
|
1045 |
else
|
1046 |
return -1; |
1047 |
} |
1048 |
else {
|
1049 |
dSlope = (z - z2) / getDistToNeighborInDir(i); |
1050 |
if( dSlope > dMaxSlope ) {
|
1051 |
iDir = i; |
1052 |
dMaxSlope = dSlope; |
1053 |
} |
1054 |
} |
1055 |
} |
1056 |
return iDir;
|
1057 |
} |
1058 |
|
1059 |
public GridCell[] getSortedArrayOfCells()throws GridException { |
1060 |
int i;
|
1061 |
int iX,iY;
|
1062 |
int iNX = getNX();
|
1063 |
int iCells = getNX() * getNY();
|
1064 |
GridCell [] cells = null; |
1065 |
|
1066 |
cells = new GridCellImpl[iCells];
|
1067 |
|
1068 |
for (i = 0; i < iCells; i++) { |
1069 |
iX = i % iNX; |
1070 |
iY = i / iNX; |
1071 |
cells[i] = getGridCell(iX, iY); |
1072 |
} |
1073 |
|
1074 |
Arrays.sort(cells);
|
1075 |
return cells;
|
1076 |
} |
1077 |
|
1078 |
/*
|
1079 |
* (non-Javadoc)
|
1080 |
* @see org.gvsig.fmap.dal.coverage.grid.Grid#getGridCell(int, int)
|
1081 |
*/
|
1082 |
public GridCell getGridCell(int iX, int iY) throws GridException { |
1083 |
switch(getDataType()){
|
1084 |
case Buffer.TYPE_BYTE: return new GridCellImpl(iX, iY, getCellValueAsByte(iX, iY)); |
1085 |
case Buffer.TYPE_SHORT: return new GridCellImpl(iX, iY, getCellValueAsShort(iX, iY)); |
1086 |
case Buffer.TYPE_INT: return new GridCellImpl(iX, iY, getCellValueAsInt(iX, iY)); |
1087 |
case Buffer.TYPE_FLOAT: return new GridCellImpl(iX, iY, getCellValueAsFloat(iX, iY)); |
1088 |
case Buffer.TYPE_DOUBLE: return new GridCellImpl(iX, iY, getCellValueAsDouble(iX, iY)); |
1089 |
} |
1090 |
return null; |
1091 |
} |
1092 |
|
1093 |
/**
|
1094 |
* Obtiene la lista de paletas asociadas al grid
|
1095 |
* @return Lista de objetos GridPalette
|
1096 |
*/
|
1097 |
public ColorTable getPalette() {
|
1098 |
return palette;
|
1099 |
} |
1100 |
|
1101 |
/**
|
1102 |
* Obtiene el n?mero de bandas del grid o 0 si no tiene buffer de
|
1103 |
* datos asociado.
|
1104 |
* @return N?mero de bandas
|
1105 |
*/
|
1106 |
public int calculateStatistics() { |
1107 |
if(rasterBuf != null) |
1108 |
return rasterBuf.getBandCount();
|
1109 |
return 0; |
1110 |
} |
1111 |
|
1112 |
/**
|
1113 |
* Asigna la lista de paletas asociadas al grid
|
1114 |
* @param palette Lista de objetos GridPalette
|
1115 |
*/
|
1116 |
public void setPalette(ColorTable palette) { |
1117 |
this.palette = palette;
|
1118 |
} |
1119 |
|
1120 |
/**
|
1121 |
* Obtiene la lista de filtros.
|
1122 |
* @return Lista de filtros.
|
1123 |
*/
|
1124 |
public RasterFilterList getFilterList(){
|
1125 |
return filterList;
|
1126 |
} |
1127 |
|
1128 |
/**
|
1129 |
* Asigna la lista de filtros
|
1130 |
* @param filterList
|
1131 |
*/
|
1132 |
public void setFilterList(RasterFilterList filterList) { |
1133 |
this.filterList = filterList;
|
1134 |
} |
1135 |
|
1136 |
/**
|
1137 |
*Aplica la lista de filtros sobre el buffer
|
1138 |
* @throws InterruptedException
|
1139 |
*/
|
1140 |
public void applyFilters() throws ProcessInterruptedException { |
1141 |
if (filterList == null) |
1142 |
return;
|
1143 |
|
1144 |
filterList.setInitRasterBuf(rasterBuf); |
1145 |
|
1146 |
filterList.getEnv().put("GridExtent", getGridExtent());
|
1147 |
filterList.getEnv().put("WindowExtent", getWindowExtent());
|
1148 |
|
1149 |
filterList.execute(); |
1150 |
rasterBuf = (RasterBuffer) filterList.getResult(); |
1151 |
dataType = rasterBuf.getDataType(); |
1152 |
} |
1153 |
|
1154 |
/*
|
1155 |
* (non-Javadoc)
|
1156 |
* @see org.gvsig.fmap.dal.coverage.grid.Grid#getRasterBuf()
|
1157 |
*/
|
1158 |
public Buffer getRasterBuf() { |
1159 |
return rasterBuf;
|
1160 |
} |
1161 |
|
1162 |
/**
|
1163 |
* Obtiene el objeto que calcula las estad?sticas del Grid
|
1164 |
* @return IBasicStats
|
1165 |
*/
|
1166 |
public BasicStats getStatistics() {
|
1167 |
return statistic;
|
1168 |
} |
1169 |
|
1170 |
/**
|
1171 |
* Asigna la banda sobre la que se realizan las operaciones. Por defecto es la banda 0
|
1172 |
* con lo que para el uso de MDTs no habr? que modificar este valor.
|
1173 |
* @param band Banda sobre la que se realizan las operaciones.
|
1174 |
*/
|
1175 |
public void setBandToOperate(int band) { |
1176 |
if(writer != null) |
1177 |
writer.setBandToOperate(band); |
1178 |
if(reader != null) |
1179 |
reader.setBandToOperate(band); |
1180 |
if(statistic != null) |
1181 |
statistic.setBandToOperate(band); |
1182 |
} |
1183 |
|
1184 |
/**
|
1185 |
* Obtiene el extent de la ventana seleccionada para petici?n de datos
|
1186 |
* @return GridExtent
|
1187 |
*/
|
1188 |
public GridExtent getWindowExtent() {
|
1189 |
return windowExtent;
|
1190 |
} |
1191 |
|
1192 |
/*
|
1193 |
* (non-Javadoc)
|
1194 |
* @see org.gvsig.fmap.dal.coverage.grid.Grid#getGridExtent()
|
1195 |
*/
|
1196 |
public GridExtent getGridExtent() {
|
1197 |
return layerExtent;
|
1198 |
} |
1199 |
|
1200 |
/**
|
1201 |
* Releases buffer resources
|
1202 |
*/
|
1203 |
public void free() { |
1204 |
if (rasterBuf != null) |
1205 |
rasterBuf.free(); |
1206 |
//if (filterList != null)
|
1207 |
//filterList.free();
|
1208 |
if (writer != null) |
1209 |
writer.free(); |
1210 |
} |
1211 |
} |