root / trunk / libraries / libRaster / src / org / gvsig / raster / buffer / RasterBuffer.java @ 13932
History | View | Annotate | Download (16.7 KB)
| 1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
|---|---|
| 2 |
*
|
| 3 |
* Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
|
| 4 |
*
|
| 5 |
* This program is free software; you can redistribute it and/or
|
| 6 |
* modify it under the terms of the GNU General Public License
|
| 7 |
* as published by the Free Software Foundation; either version 2
|
| 8 |
* of the License, or (at your option) any later version.
|
| 9 |
*
|
| 10 |
* This program 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
|
| 13 |
* GNU General Public License for more details.
|
| 14 |
*
|
| 15 |
* You should have received a copy of the GNU General Public License
|
| 16 |
* along with this program; if not, write to the Free Software
|
| 17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 18 |
*/
|
| 19 |
package org.gvsig.raster.buffer; |
| 20 |
|
| 21 |
import java.io.FileNotFoundException; |
| 22 |
|
| 23 |
import org.gvsig.raster.RasterLibrary; |
| 24 |
import org.gvsig.raster.buffer.cache.RasterCache; |
| 25 |
import org.gvsig.raster.buffer.cache.RasterReadOnlyHugeBuffer; |
| 26 |
import org.gvsig.raster.dataset.IBuffer; |
| 27 |
import org.gvsig.raster.dataset.NotSupportedExtensionException; |
| 28 |
import org.gvsig.raster.dataset.RasterDriverException; |
| 29 |
import org.gvsig.raster.datastruct.Histogram; |
| 30 |
import org.gvsig.raster.datastruct.HistogramException; |
| 31 |
import org.gvsig.raster.hierarchy.IHistogramable; |
| 32 |
import org.gvsig.raster.util.RasterUtilities; |
| 33 |
|
| 34 |
/**
|
| 35 |
* Rectangulo de pixeles. Para cada tipo de datos java hay un buffer distinto donde cada elemento es
|
| 36 |
* accedido de la siguiente forma: [banda][fila][columna]
|
| 37 |
* m[1][2][0] = cte;-> Sustituye el elemento de la fila 2 de la banda 1 columna 0
|
| 38 |
* m[1][0] = array; -> Sustituye la fila 0 de la banda 1
|
| 39 |
* m[0] = matriz cuadrada; -> Sustituye la banda entera.
|
| 40 |
*
|
| 41 |
*/
|
| 42 |
public abstract class RasterBuffer implements IBuffer { |
| 43 |
public static final int CANCEL_HISTOGRAM = IHistogramable.CANCEL_HISTOGRAM; |
| 44 |
protected boolean[] cancel = new boolean[1]; |
| 45 |
|
| 46 |
public double noDataValue = -99999; |
| 47 |
|
| 48 |
protected int percent = 0; |
| 49 |
protected boolean canceled = false; |
| 50 |
|
| 51 |
protected int width; |
| 52 |
protected int height; |
| 53 |
protected int nBands; |
| 54 |
protected int dataType; |
| 55 |
|
| 56 |
/**
|
| 57 |
* Variable est?tica que si est? a false desactiva el uso de cach?. Puede ser usada por un cliente
|
| 58 |
* para cargar siempre los datos en memoria. independientemente de su tama?o.
|
| 59 |
*/
|
| 60 |
public static boolean cacheOn = true; |
| 61 |
/**
|
| 62 |
* Fuerza la carga de los datos en cach? independientemente de su tama?o. Su
|
| 63 |
* uso suele ser util solo para depuraci?n. Su valor por defecto y recomendado
|
| 64 |
* es siempre false.
|
| 65 |
*/
|
| 66 |
public static boolean forceToLoadInCache = false; |
| 67 |
/**
|
| 68 |
* Fuerza la carga de los datos en cach? de solo lectura independientemente de su tama?o. Su
|
| 69 |
* uso suele ser util solo para depuraci?n. Su valor por defecto y recomendado
|
| 70 |
* es siempre false.
|
| 71 |
*/
|
| 72 |
public static boolean forceToLoadInReadOnlyCache = false; |
| 73 |
/**
|
| 74 |
* Valor con el que se rellena una banda no valida del buffer. Una banda no valida es la que
|
| 75 |
* no tiene datos asignados y tampoco puede ser null. Todas las bandas no validas de un buffer
|
| 76 |
* apuntan por referencia a la misma banda.
|
| 77 |
*/
|
| 78 |
protected double notValidValue = 0D; |
| 79 |
|
| 80 |
private BufferInterpolation interp = null; |
| 81 |
|
| 82 |
/**
|
| 83 |
* Genera instancias del buffer de datos adecuado al tama?o del raster. Si no hay muchos datos
|
| 84 |
* (menos de cacheMemorySize) crear? un buffer en memoria. Si hay m?s de esta cantidad
|
| 85 |
* entonces crearemos un buffer cacheado (RasterCache). A partir de la cantidad se?alada
|
| 86 |
* por multicacheMemorySize haremos un buffer cacheado donde cada p?gina no ocupa todo
|
| 87 |
* el ancho del raster ya que este ser? muy grande. La gesti?n de una cache donde cada
|
| 88 |
* pagina ha de partir una l?nea lleva una complejidad a?adida.
|
| 89 |
*
|
| 90 |
* @param dataType Tipo de dato
|
| 91 |
* @param width Ancho
|
| 92 |
* @param height Alto
|
| 93 |
* @param bandNr Banda
|
| 94 |
* @param flag En caso de buffers de memoria este flag a true significa que se reserva la memoria
|
| 95 |
* para el buffer de forma normal y si est? a false no se reserva por lo que la reserva deber? ser
|
| 96 |
* posterior.
|
| 97 |
* @return Objeto RasterBuffer
|
| 98 |
* @throws RasterDriverException
|
| 99 |
* @throws NotSupportedExtensionException
|
| 100 |
* @throws FileNotFoundException
|
| 101 |
*/
|
| 102 |
public static RasterBuffer getBuffer(int dataType, int width, int height, int bandNr, boolean malloc) |
| 103 |
/*throws FileNotFoundException, NotSupportedExtensionException, RasterDriverException*/{
|
| 104 |
//Opci?n de cachear siempre activada (Solo DEBUG)
|
| 105 |
if(forceToLoadInCache)
|
| 106 |
return new RasterCache(dataType, width, height, bandNr); |
| 107 |
if(forceToLoadInReadOnlyCache){
|
| 108 |
try {
|
| 109 |
return new RasterReadOnlyHugeBuffer(dataType, width, height, bandNr); |
| 110 |
} catch (FileNotFoundException e) { |
| 111 |
//TODO: EXCEPTION: Modificar el lanzamiento de excepciones del RasterBuffer
|
| 112 |
e.printStackTrace(); |
| 113 |
} catch (NotSupportedExtensionException e) {
|
| 114 |
e.printStackTrace(); |
| 115 |
} catch (RasterDriverException e) {
|
| 116 |
e.printStackTrace(); |
| 117 |
} |
| 118 |
} |
| 119 |
|
| 120 |
if(cacheOn){
|
| 121 |
long size = (RasterUtilities.getBytesFromRasterBufType(dataType) * width * height * bandNr) / 1024; |
| 122 |
long ms1 = RasterLibrary.cacheSize * 1024; |
| 123 |
//long ms2 = multicacheMemorySize * 1024;
|
| 124 |
if(size <= ms1)
|
| 125 |
return new RasterMemoryBuffer(dataType, width, height, bandNr, malloc); |
| 126 |
else{
|
| 127 |
//if(filePath == null)
|
| 128 |
return new RasterCache(dataType, width, height, bandNr); |
| 129 |
/*else
|
| 130 |
return new RasterReadOnlyHugeBuffer(dataType, width, height, bandNr, filePath);*/
|
| 131 |
} |
| 132 |
}else
|
| 133 |
return new RasterMemoryBuffer(dataType, width, height, bandNr, malloc); |
| 134 |
} |
| 135 |
|
| 136 |
/**
|
| 137 |
* Reserva de memoria para el rasterbuf
|
| 138 |
* @param dataType Tipo de dato
|
| 139 |
* @param width Ancho
|
| 140 |
* @param height Alto
|
| 141 |
* @param bandNr Numero de bandas
|
| 142 |
* @param orig
|
| 143 |
*/
|
| 144 |
public abstract void malloc(int dataType, int width, int height, int bandNr); |
| 145 |
|
| 146 |
/*
|
| 147 |
* (non-Javadoc)
|
| 148 |
* @see org.gvsig.fmap.driver.IBuffer#getWidth()
|
| 149 |
*/
|
| 150 |
public int getWidth() { |
| 151 |
return width;
|
| 152 |
} |
| 153 |
|
| 154 |
/*
|
| 155 |
* (non-Javadoc)
|
| 156 |
* @see org.gvsig.fmap.driver.IBuffer#getHeight()
|
| 157 |
*/
|
| 158 |
public int getHeight() { |
| 159 |
return height;
|
| 160 |
} |
| 161 |
|
| 162 |
/*
|
| 163 |
* (non-Javadoc)
|
| 164 |
* @see org.gvsig.fmap.driver.IBuffer#getBandCount()
|
| 165 |
*/
|
| 166 |
public int getBandCount() { |
| 167 |
return nBands;
|
| 168 |
} |
| 169 |
|
| 170 |
/**
|
| 171 |
* Obtiene el tipo de dato. Los tipos de dato posibles est?n definidos en IRaster.
|
| 172 |
* @return tipo de datos
|
| 173 |
*/
|
| 174 |
public int getDataType() { |
| 175 |
return dataType;
|
| 176 |
} |
| 177 |
|
| 178 |
/**
|
| 179 |
* Asigna el tipo de dato. Los tipos de dato posibles est?n definidos en IRaster.
|
| 180 |
* @param dataType Tipo de dato del buffer
|
| 181 |
*/
|
| 182 |
public void setDataType(int dataType) { |
| 183 |
this.dataType = dataType;
|
| 184 |
} |
| 185 |
|
| 186 |
/**
|
| 187 |
* Obtiene el tama?o del tipo de dato en bytes
|
| 188 |
* @return Tipo de dato
|
| 189 |
*/
|
| 190 |
public int getDataSize() { |
| 191 |
if (dataType == TYPE_BYTE) {
|
| 192 |
return 1; |
| 193 |
} else if ((dataType == TYPE_SHORT) | (dataType == TYPE_USHORT)) { |
| 194 |
return 2; |
| 195 |
} else if (dataType == TYPE_INT) { |
| 196 |
return 4; |
| 197 |
}else if (dataType == TYPE_FLOAT) { |
| 198 |
return 8; |
| 199 |
}else if (dataType == TYPE_DOUBLE) { |
| 200 |
return 16; |
| 201 |
} |
| 202 |
|
| 203 |
return 0; |
| 204 |
} |
| 205 |
|
| 206 |
/**
|
| 207 |
* Obtiene el tama?o del buffer
|
| 208 |
* @return tama?o del buffer
|
| 209 |
*/
|
| 210 |
public long sizeof() { |
| 211 |
return getDataSize() * width * height * nBands;
|
| 212 |
} |
| 213 |
|
| 214 |
/**
|
| 215 |
* Replica la banda de una posici?n sobre otra. Si la banda de destino no existe
|
| 216 |
* se crea nueva. Si la posici?n de la banda de destino est? intercalada entre bandas
|
| 217 |
* que ya existen las otras se desplazan hacia abajo, NO se machacan los datos de ninguna.
|
| 218 |
* Los datos se replican por referencia por lo que al modificar la banda original las
|
| 219 |
* del resto quedar?n afectadas.
|
| 220 |
* @param orig. Posici?n de la banda de origen.
|
| 221 |
* @param dest. Posici?n de la banda destino
|
| 222 |
*/
|
| 223 |
public abstract void replicateBand(int orig, int dest); |
| 224 |
|
| 225 |
/**
|
| 226 |
* Cambia bandas de posici?n. Las posiciones deben existir como bandas del raster.
|
| 227 |
* Cada elemento del array representa una banda existente en el buffer (de longitud
|
| 228 |
* rasterBuf.length) y el valor contenido dentro la banda que le corresponde. Por ejemplo
|
| 229 |
* si pasamos un array {1, 0, 3, 2} significa que el buffer tiene cuatro bandas y que
|
| 230 |
* cambiamos la 0 por la 1 y la 2 por la 3. Un array {0, 1, 2, 3} en el mismo
|
| 231 |
* caso no producir?a nig?n cambio.
|
| 232 |
*
|
| 233 |
* Si quisieramos asignar en un buffer monobanda su banda a la segunda posici?n habria
|
| 234 |
* que insertar una vacia, por ejemplo con addBandFloat(0, null) se insertaria una
|
| 235 |
* banda nula en la posici?n 0 y la banda que estaba en la 0 pasar?a a la segunda.
|
| 236 |
*
|
| 237 |
*/
|
| 238 |
public abstract void switchBands(int[] bandPosition); |
| 239 |
|
| 240 |
/**
|
| 241 |
* Convierte un tipo de dato a cadena
|
| 242 |
* @param type Tipo de dato
|
| 243 |
* @return cadena que representa el tipo de dato
|
| 244 |
*/
|
| 245 |
public static String typesToString(int type) { |
| 246 |
switch (type) {
|
| 247 |
case RasterBuffer.TYPE_IMAGE:
|
| 248 |
return new String("Image"); |
| 249 |
|
| 250 |
case RasterBuffer.TYPE_BYTE:
|
| 251 |
return new String("Byte"); |
| 252 |
|
| 253 |
case RasterBuffer.TYPE_DOUBLE:
|
| 254 |
return new String("Double"); |
| 255 |
|
| 256 |
case RasterBuffer.TYPE_FLOAT:
|
| 257 |
return new String("Float"); |
| 258 |
|
| 259 |
case RasterBuffer.TYPE_INT:
|
| 260 |
return new String("Integer"); |
| 261 |
|
| 262 |
case RasterBuffer.TYPE_USHORT:
|
| 263 |
case RasterBuffer.TYPE_SHORT:
|
| 264 |
return new String("Short"); |
| 265 |
} |
| 266 |
|
| 267 |
return null; |
| 268 |
} |
| 269 |
|
| 270 |
/*
|
| 271 |
* (non-Javadoc)
|
| 272 |
* @see org.gvsig.raster.dataset.IBuffer#isInside(int, int)
|
| 273 |
*/
|
| 274 |
public boolean isInside(int x, int y) { |
| 275 |
if (x < 0 || y < 0 || x >= getWidth() || y >= getHeight()) |
| 276 |
return false; |
| 277 |
return true; |
| 278 |
} |
| 279 |
|
| 280 |
/*
|
| 281 |
* (non-Javadoc)
|
| 282 |
* @see org.gvsig.fmap.driver.IBuffer#getNoDataValue()
|
| 283 |
*/
|
| 284 |
public double getNoDataValue() { |
| 285 |
return noDataValue;
|
| 286 |
} |
| 287 |
|
| 288 |
/*
|
| 289 |
* (non-Javadoc)
|
| 290 |
* @see org.gvsig.fmap.driver.IBuffer#getByteNoDataValue()
|
| 291 |
*/
|
| 292 |
public byte getByteNoDataValue() { |
| 293 |
return (byte)noDataValue; |
| 294 |
} |
| 295 |
|
| 296 |
/*
|
| 297 |
* (non-Javadoc)
|
| 298 |
* @see org.gvsig.fmap.driver.IBuffer#getShortNoDataValue()
|
| 299 |
*/
|
| 300 |
public short getShortNoDataValue(){ |
| 301 |
return (short)noDataValue; |
| 302 |
} |
| 303 |
|
| 304 |
/*
|
| 305 |
* (non-Javadoc)
|
| 306 |
* @see org.gvsig.fmap.driver.IBuffer#getIntNoDataValue()
|
| 307 |
*/
|
| 308 |
public int getIntNoDataValue(){ |
| 309 |
return (int)noDataValue; |
| 310 |
} |
| 311 |
|
| 312 |
/*
|
| 313 |
* (non-Javadoc)
|
| 314 |
* @see org.gvsig.fmap.driver.IBuffer#getFloatNoDataValue()
|
| 315 |
*/
|
| 316 |
public float getFloatNoDataValue(){ |
| 317 |
return (float)noDataValue; |
| 318 |
} |
| 319 |
|
| 320 |
/*
|
| 321 |
* (non-Javadoc)
|
| 322 |
* @see org.gvsig.fmap.driver.IBuffer#setNoDataValue(double)
|
| 323 |
*/
|
| 324 |
public void setNoDataValue(double nd){ |
| 325 |
noDataValue = nd; |
| 326 |
} |
| 327 |
|
| 328 |
/*
|
| 329 |
* (non-Javadoc)
|
| 330 |
* @see org.gvsig.fmap.driver.IBuffer#getNotValidValue()
|
| 331 |
*/
|
| 332 |
public double getNotValidValue(){ |
| 333 |
return notValidValue;
|
| 334 |
} |
| 335 |
|
| 336 |
/*
|
| 337 |
* (non-Javadoc)
|
| 338 |
* @see org.gvsig.fmap.driver.IBuffer#setNotValidValue(java.lang.Object)
|
| 339 |
*/
|
| 340 |
public void setNotValidValue(double value){ |
| 341 |
this.notValidValue = value;
|
| 342 |
} |
| 343 |
|
| 344 |
/*
|
| 345 |
* (non-Javadoc)
|
| 346 |
* @see org.gvsig.fmap.driver.IBuffer#cloneBuffer()
|
| 347 |
*/
|
| 348 |
public abstract IBuffer cloneBuffer(); |
| 349 |
|
| 350 |
/**
|
| 351 |
* Ajusta el ?rea del grid a un ancho y un alto dado en pixeles. Este ajuste se har?
|
| 352 |
* en relaci?n a un m?todo de interpolaci?n definido en el par?metro.
|
| 353 |
* @param w Ancho de la nueva imagen.
|
| 354 |
* @param h Alto de la nueva imagen.
|
| 355 |
* @param interpolation M?todo de interpolaci?n que se usar? en el ajuste.
|
| 356 |
*/
|
| 357 |
public RasterBuffer getAdjustedWindow(int w, int h, int interpolationMethod) { |
| 358 |
if(interp == null) |
| 359 |
interp = new BufferInterpolation(this); |
| 360 |
|
| 361 |
if(w == getWidth() && h == getHeight())
|
| 362 |
return this; |
| 363 |
RasterBuffer rasterBuf = null;
|
| 364 |
switch(interpolationMethod) {
|
| 365 |
case BufferInterpolation.INTERPOLATION_NearestNeighbour:
|
| 366 |
rasterBuf = interp.adjustRasterNearestNeighbourInterpolation(w, h); |
| 367 |
break;
|
| 368 |
case BufferInterpolation.INTERPOLATION_Bilinear:
|
| 369 |
rasterBuf = interp.adjustRasterBilinearInterpolation(w, h); |
| 370 |
break;
|
| 371 |
case BufferInterpolation.INTERPOLATION_InverseDistance:
|
| 372 |
rasterBuf = interp.adjustRasterInverseDistanceInterpolation(w, h); |
| 373 |
break;
|
| 374 |
case BufferInterpolation.INTERPOLATION_BicubicSpline:
|
| 375 |
rasterBuf = interp.adjustRasterBicubicSplineInterpolation(w, h); |
| 376 |
break;
|
| 377 |
case BufferInterpolation.INTERPOLATION_BSpline:
|
| 378 |
rasterBuf = interp.adjustRasterBSplineInterpolation(w, h); |
| 379 |
break;
|
| 380 |
} |
| 381 |
if(rasterBuf != null) |
| 382 |
return rasterBuf;
|
| 383 |
else
|
| 384 |
return this; |
| 385 |
} |
| 386 |
|
| 387 |
/**
|
| 388 |
* Calcula el m?nimo y el m?ximo del histograma previamente.
|
| 389 |
* @return double[] con el m?nimo y el m?ximo.
|
| 390 |
*/
|
| 391 |
private double[] getLimits() { |
| 392 |
double max = Double.NEGATIVE_INFINITY; |
| 393 |
double min = Double.MAX_VALUE; |
| 394 |
double value = 0; |
| 395 |
|
| 396 |
switch (getDataType()) {
|
| 397 |
case IBuffer.TYPE_BYTE:
|
| 398 |
for (int i = 0; i < getBandCount(); i++) |
| 399 |
for (int r = 0; r < getHeight(); r++) { |
| 400 |
for (int c = 0; c < getWidth(); c++) { |
| 401 |
value = (double) (getElemByte(r, c, i));
|
| 402 |
if (value > max) max = value;
|
| 403 |
if (value < min) min = value;
|
| 404 |
} |
| 405 |
if (isCanceled(CANCEL_HISTOGRAM))
|
| 406 |
return null; |
| 407 |
} |
| 408 |
break;
|
| 409 |
case IBuffer.TYPE_SHORT:
|
| 410 |
for (int i = 0; i < getBandCount(); i++) |
| 411 |
for (int r = 0; r < getHeight(); r++) { |
| 412 |
for (int c = 0; c < getWidth(); c++) { |
| 413 |
value = (double) getElemShort(r, c, i);
|
| 414 |
if (value > max) max = value;
|
| 415 |
if (value < min) min = value;
|
| 416 |
} |
| 417 |
if (isCanceled(CANCEL_HISTOGRAM))
|
| 418 |
return null; |
| 419 |
} |
| 420 |
break;
|
| 421 |
case IBuffer.TYPE_INT:
|
| 422 |
for (int i = 0; i < getBandCount(); i++) |
| 423 |
for (int r = 0; r < getHeight(); r++) { |
| 424 |
for (int c = 0; c < getWidth(); c++) { |
| 425 |
value = (double) getElemInt(r, c, i);
|
| 426 |
if (value > max) max = value;
|
| 427 |
if (value < min) min = value;
|
| 428 |
} |
| 429 |
if (isCanceled(CANCEL_HISTOGRAM))
|
| 430 |
return null; |
| 431 |
} |
| 432 |
break;
|
| 433 |
case IBuffer.TYPE_FLOAT:
|
| 434 |
for (int i = 0; i < getBandCount(); i++) |
| 435 |
for (int r = 0; r < getHeight(); r++) { |
| 436 |
for (int c = 0; c < getWidth(); c++) { |
| 437 |
value = (double) getElemFloat(r, c, i);
|
| 438 |
if (value > max) max = value;
|
| 439 |
if (value < min) min = value;
|
| 440 |
} |
| 441 |
if (isCanceled(CANCEL_HISTOGRAM))
|
| 442 |
return null; |
| 443 |
} |
| 444 |
break;
|
| 445 |
case IBuffer.TYPE_DOUBLE:
|
| 446 |
for (int i = 0; i < getBandCount(); i++) |
| 447 |
for (int r = 0; r < getHeight(); r++) { |
| 448 |
for (int c = 0; c < getWidth(); c++) { |
| 449 |
value = getElemDouble(r, c, i); |
| 450 |
if (value > max) max = value;
|
| 451 |
if (value < min) min = value;
|
| 452 |
} |
| 453 |
if (isCanceled(CANCEL_HISTOGRAM))
|
| 454 |
return null; |
| 455 |
} |
| 456 |
break;
|
| 457 |
} |
| 458 |
double[] values = new double[2]; |
| 459 |
values[0] = min;
|
| 460 |
values[1] = max;
|
| 461 |
return values;
|
| 462 |
} |
| 463 |
|
| 464 |
/*
|
| 465 |
* (non-Javadoc)
|
| 466 |
* @see org.gvsig.raster.driver.datasetproperties.IHistogramable#getHistogram()
|
| 467 |
*/
|
| 468 |
public Histogram getHistogram() throws HistogramException { |
| 469 |
percent = 0;
|
| 470 |
Histogram hist = null;
|
| 471 |
double[] limits = getLimits(); |
| 472 |
|
| 473 |
if (limits == null) |
| 474 |
return null; |
| 475 |
|
| 476 |
if (getDataType() == IBuffer.TYPE_BYTE)
|
| 477 |
hist = new Histogram(getBandCount(), 256, limits[0], limits[1]); |
| 478 |
else
|
| 479 |
hist = new Histogram(getBandCount(), RasterLibrary.defaultNumberOfClasses, limits[0], limits[1]); |
| 480 |
|
| 481 |
for (int iBand = 0; iBand < getBandCount(); iBand++) { |
| 482 |
for (int row = 0; row < getHeight(); row++) { |
| 483 |
switch(getDataType()) {
|
| 484 |
case IBuffer.TYPE_BYTE:
|
| 485 |
for (int col = 0; col < getWidth(); col++) |
| 486 |
hist.incrementPxValue(iBand, (double)(getElemByte(row, col, iBand)));
|
| 487 |
break;
|
| 488 |
case IBuffer.TYPE_SHORT:
|
| 489 |
for (int col = 0; col < getWidth(); col++) |
| 490 |
hist.incrementPxValue(iBand, (double)(getElemShort(row, col, iBand)));
|
| 491 |
break;
|
| 492 |
case IBuffer.TYPE_INT:
|
| 493 |
for (int col = 0; col < getWidth(); col++) |
| 494 |
hist.incrementPxValue(iBand, (double)(getElemInt(row, col, iBand)));
|
| 495 |
break;
|
| 496 |
case IBuffer.TYPE_FLOAT:
|
| 497 |
for (int col = 0; col < getWidth(); col++) |
| 498 |
hist.incrementPxValue(iBand, (double)getElemFloat(row, col, iBand));
|
| 499 |
break;
|
| 500 |
case IBuffer.TYPE_DOUBLE:
|
| 501 |
for (int col = 0; col < getWidth(); col++) |
| 502 |
hist.incrementPxValue(iBand, getElemDouble(row, col, iBand)); |
| 503 |
break;
|
| 504 |
} |
| 505 |
|
| 506 |
if (isCanceled(CANCEL_HISTOGRAM))
|
| 507 |
return null; |
| 508 |
|
| 509 |
percent = ((iBand*getHeight() + row) * 100) /(getHeight() * getBandCount());
|
| 510 |
} |
| 511 |
} |
| 512 |
percent = 100;
|
| 513 |
return hist;
|
| 514 |
} |
| 515 |
|
| 516 |
/*
|
| 517 |
* (non-Javadoc)
|
| 518 |
* @see org.gvsig.raster.util.IHistogramable#resetPercent()
|
| 519 |
*/
|
| 520 |
public void resetPercent() { |
| 521 |
percent = 0;
|
| 522 |
} |
| 523 |
|
| 524 |
/*
|
| 525 |
* (non-Javadoc)
|
| 526 |
* @see org.gvsig.raster.util.IHistogramable#getPercent()
|
| 527 |
*/
|
| 528 |
public int getPercent() { |
| 529 |
return percent;
|
| 530 |
} |
| 531 |
|
| 532 |
/*
|
| 533 |
* (non-Javadoc)
|
| 534 |
* @see org.gvsig.raster.util.ICancellable#isCanceled()
|
| 535 |
*/
|
| 536 |
public boolean isCanceled(int process) { |
| 537 |
if(process == CANCEL_HISTOGRAM)
|
| 538 |
return cancel[0]; |
| 539 |
return false; |
| 540 |
} |
| 541 |
|
| 542 |
/*
|
| 543 |
* (non-Javadoc)
|
| 544 |
* @see org.gvsig.raster.util.ICancellable#setCanceled(boolean)
|
| 545 |
*/
|
| 546 |
public void setCanceled(boolean value, int process) { |
| 547 |
if(process == CANCEL_HISTOGRAM || process == 0) |
| 548 |
cancel[0] = value;
|
| 549 |
} |
| 550 |
} |