root / trunk / libraries / libCq_CMS_praster / src / org / cresques / io / datastruct / Palette.java @ 8026
History | View | Annotate | Download (12.7 KB)
| 1 |
/*
|
|---|---|
| 2 |
* Cresques Mapping Suite. Graphic Library for constructing mapping applications.
|
| 3 |
*
|
| 4 |
* Copyright (C) 2004-5.
|
| 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 19 |
*
|
| 20 |
* For more information, contact:
|
| 21 |
*
|
| 22 |
* cresques@gmail.com
|
| 23 |
*/
|
| 24 |
package org.cresques.io.datastruct; |
| 25 |
|
| 26 |
import org.cresques.io.data.RasterBuf; |
| 27 |
import org.cresques.util.Utilities; |
| 28 |
|
| 29 |
import es.gva.cit.jgdal.GdalColorEntry; |
| 30 |
import es.gva.cit.jgdal.GdalColorTable; |
| 31 |
import es.gva.cit.jgdal.GdalException; |
| 32 |
|
| 33 |
/**
|
| 34 |
* Paleta para raster. Esta consta de los valores RGB de la paleta que son almacenados en un vector de
|
| 35 |
* enteros donde cada elemento entero contiene en su interior el RGB completo y del vector de rangos.
|
| 36 |
* Dependiendo de si el tipo de rango es entero o decimal este estar? almacenado en un vector de rangos
|
| 37 |
* entero (intRange) o enun vector de rangos double (doubleRange). El tipo de dato del rango quedar?
|
| 38 |
* almacenado en la variable type.
|
| 39 |
* @author Nacho Brodin (brodin_ign@gva.es)
|
| 40 |
*/
|
| 41 |
public class Palette{ |
| 42 |
/**
|
| 43 |
* Tipo de dato de la paleta
|
| 44 |
* <UL>
|
| 45 |
* <LI>TYPE_INT = Valido para byte, short e int</LI>
|
| 46 |
* <LI>TYPE_DOUBLE = Valido para float y double</LI>
|
| 47 |
* </UL>
|
| 48 |
*/
|
| 49 |
private int type = RasterBuf.TYPE_UNDEFINED; |
| 50 |
/**
|
| 51 |
* Lista de rangos para paletas enteras
|
| 52 |
*/
|
| 53 |
private int[] intRange = null; |
| 54 |
/**
|
| 55 |
* Lista de rangos para paletas decimales
|
| 56 |
*/
|
| 57 |
private double[] doubleRange = null; |
| 58 |
/**
|
| 59 |
* Lista de valores RGB
|
| 60 |
*/
|
| 61 |
private int[] palette = null; |
| 62 |
/**
|
| 63 |
* Heuristica para paletas enteras. Esta heuristica simple consiste en el valor
|
| 64 |
* intermedio de la tabla, de esta forma reduce la tabla a la mitad.
|
| 65 |
*/
|
| 66 |
private int intHeuristica = Integer.MAX_VALUE; |
| 67 |
/**
|
| 68 |
* Heuristica para paletas decimales. Esta heuristica simple consiste en el valor
|
| 69 |
* intermedio de la tabla, de esta forma reduce la tabla a la mitad.
|
| 70 |
*/
|
| 71 |
private double doubleHeuristica = Double.MAX_VALUE; |
| 72 |
/**
|
| 73 |
* Nombre de la clase asociada a la entrada
|
| 74 |
*/
|
| 75 |
private String[] nameClass = null; |
| 76 |
|
| 77 |
|
| 78 |
/**
|
| 79 |
* Obtiene el valor RGB interpolado para un clave entera pasada por par?metro
|
| 80 |
* @param value clave de la cual se quiere obtener el valor RGB de la paleta
|
| 81 |
* @return valor RGB
|
| 82 |
*/
|
| 83 |
public int getInterpolateRGB2(double value){ |
| 84 |
int maxGrad = 127; |
| 85 |
int init = 1; |
| 86 |
int color = 0; |
| 87 |
double beginValue = 0; |
| 88 |
double nextValue = 0; |
| 89 |
for(int i = init; i <= doubleRange.length; i++){ |
| 90 |
if(i < doubleRange.length){
|
| 91 |
if(value > doubleRange[i]){
|
| 92 |
color = palette[i - 1];
|
| 93 |
beginValue = doubleRange[i - 1];
|
| 94 |
nextValue = doubleRange[i]; |
| 95 |
break;
|
| 96 |
} |
| 97 |
}else{
|
| 98 |
color = palette[i - 1];
|
| 99 |
beginValue = doubleRange[i - 1];
|
| 100 |
nextValue = 0;
|
| 101 |
break;
|
| 102 |
} |
| 103 |
} |
| 104 |
int[] colorBegin = Utilities.getARGBFromIntToIntArray(color); |
| 105 |
|
| 106 |
int max = Math.max(Math.max(colorBegin[0], colorBegin[1]), colorBegin[2]); |
| 107 |
|
| 108 |
double distance = Math.abs(beginValue - nextValue); |
| 109 |
double absValue = Math.abs(value - nextValue); |
| 110 |
|
| 111 |
int newBand = 0; |
| 112 |
if(distance != 0) |
| 113 |
newBand = (int)Math.round((absValue * maxGrad) / distance); |
| 114 |
|
| 115 |
int[] res = new int[3]; |
| 116 |
|
| 117 |
if((max + maxGrad) > 255){ |
| 118 |
for(int i = 0; i < 3; i++) |
| 119 |
if(colorBegin[i] == max){
|
| 120 |
res[i] = max - newBand; |
| 121 |
break;
|
| 122 |
}else
|
| 123 |
res[i] = colorBegin[i]; |
| 124 |
}else{
|
| 125 |
for(int i = 0; i < 3; i++) |
| 126 |
if(colorBegin[i] == max){
|
| 127 |
res[i] = max + newBand; |
| 128 |
break;
|
| 129 |
}else
|
| 130 |
res[i] = colorBegin[i]; |
| 131 |
} |
| 132 |
|
| 133 |
return Utilities.getIntFromARGB(colorBegin[3], res[0], res[1], res[2]); |
| 134 |
} |
| 135 |
|
| 136 |
/**
|
| 137 |
* Obtiene el valor RGB interpolado para un clave entera pasada por par?metro
|
| 138 |
* @param value clave de la cual se quiere obtener el valor RGB de la paleta
|
| 139 |
* @return valor RGB
|
| 140 |
*/
|
| 141 |
public int getInterpolateRGB2(int value){ |
| 142 |
int maxGrad = 127; |
| 143 |
int init = 1; |
| 144 |
int color = 0; |
| 145 |
int beginValue = 0; |
| 146 |
int nextValue = 0; |
| 147 |
for(int i = init; i <= intRange.length; i++){ |
| 148 |
if(i < intRange.length){
|
| 149 |
if(value > intRange[i]){
|
| 150 |
color = palette[i - 1];
|
| 151 |
beginValue = intRange[i - 1];
|
| 152 |
nextValue = intRange[i]; |
| 153 |
break;
|
| 154 |
} |
| 155 |
}else{
|
| 156 |
color = palette[i - 1];
|
| 157 |
beginValue = intRange[i - 1];
|
| 158 |
nextValue = 0;
|
| 159 |
break;
|
| 160 |
} |
| 161 |
} |
| 162 |
int[] colorBegin = Utilities.getARGBFromIntToIntArray(color); |
| 163 |
|
| 164 |
int max = Math.max(Math.max(colorBegin[0], colorBegin[1]), colorBegin[2]); |
| 165 |
|
| 166 |
int distance = Math.abs(beginValue - nextValue); |
| 167 |
int absValue = Math.abs(value - nextValue); |
| 168 |
|
| 169 |
int newBand = 0; |
| 170 |
if(distance != 0) |
| 171 |
newBand = (absValue * maxGrad) / distance; |
| 172 |
|
| 173 |
int[] res = new int[3]; |
| 174 |
|
| 175 |
if((max + maxGrad) > 255){ |
| 176 |
for(int i = 0; i < 3; i++) |
| 177 |
if(colorBegin[i] == max){
|
| 178 |
res[i] = max - newBand; |
| 179 |
break;
|
| 180 |
}else
|
| 181 |
res[i] = colorBegin[i]; |
| 182 |
}else{
|
| 183 |
for(int i = 0; i < 3; i++) |
| 184 |
if(colorBegin[i] == max){
|
| 185 |
res[i] = max + newBand; |
| 186 |
break;
|
| 187 |
}else
|
| 188 |
res[i] = colorBegin[i]; |
| 189 |
} |
| 190 |
|
| 191 |
return Utilities.getIntFromARGB(colorBegin[3], res[0], res[1], res[2]); |
| 192 |
} |
| 193 |
|
| 194 |
|
| 195 |
/**
|
| 196 |
* Obtiene el valor RGB interpolado para un clave entera pasada por par?metro
|
| 197 |
* @param value clave de la cual se quiere obtener el valor RGB de la paleta
|
| 198 |
* @return valor RGB
|
| 199 |
*/
|
| 200 |
public int getInterpolateRGB(int value){ |
| 201 |
int init = 1; |
| 202 |
int color = 0; |
| 203 |
int beginValue = 0; |
| 204 |
int nextValue = 0; |
| 205 |
int nextColor = 0; |
| 206 |
for(int i = init; i <= intRange.length; i++){ |
| 207 |
if(i < intRange.length){
|
| 208 |
if(value > intRange[i]){
|
| 209 |
color = palette[i - 1];
|
| 210 |
beginValue = intRange[i - 1];
|
| 211 |
nextValue = intRange[i]; |
| 212 |
nextColor = palette[i]; |
| 213 |
break;
|
| 214 |
} |
| 215 |
}else{
|
| 216 |
color = palette[i - 1];
|
| 217 |
beginValue = intRange[i - 1];
|
| 218 |
nextValue = intRange[0];
|
| 219 |
nextColor = palette[0];
|
| 220 |
break;
|
| 221 |
} |
| 222 |
} |
| 223 |
int[] colorBegin = Utilities.getARGBFromIntToIntArray(color); |
| 224 |
int[] colorEnd = Utilities.getARGBFromIntToIntArray(nextColor); |
| 225 |
|
| 226 |
int dif = Math.abs(beginValue - nextValue); |
| 227 |
double difR = Math.abs(colorBegin[0] - colorEnd[0]) / (double)dif; |
| 228 |
double difG = Math.abs(colorBegin[1] - colorEnd[1]) / (double)dif; |
| 229 |
double difB = Math.abs(colorBegin[2] - colorEnd[2]) / (double)dif; |
| 230 |
|
| 231 |
int[] res = new int[3]; |
| 232 |
res[0] = (int)(colorBegin[0] + difR * (value - colorBegin[0])); |
| 233 |
res[1] = (int)(colorBegin[1] + difG * (value - colorBegin[1])); |
| 234 |
res[2] = (int)(colorBegin[2] + difB * (value - colorBegin[2])); |
| 235 |
|
| 236 |
return Utilities.getIntFromARGB(colorBegin[3], res[0], res[1], res[2]); |
| 237 |
} |
| 238 |
|
| 239 |
/**
|
| 240 |
* Obtiene el valor RGB para un clave entera pasada por par?metro
|
| 241 |
* @param value clave de la cual se quiere obtener el valor RGB de la paleta
|
| 242 |
* @return valor RGB
|
| 243 |
*/
|
| 244 |
public int getRGB(int value){ |
| 245 |
int init = 1; |
| 246 |
/*if(value > intHeuristica)
|
| 247 |
init = intRange.length >> 1;*/
|
| 248 |
for(int i = init; i <= intRange.length; i++) |
| 249 |
if(i < intRange.length){
|
| 250 |
if(value > intRange[i])
|
| 251 |
return palette[i - 1]; |
| 252 |
}else{
|
| 253 |
return palette[i - 1]; |
| 254 |
} |
| 255 |
return 0; |
| 256 |
} |
| 257 |
|
| 258 |
/**
|
| 259 |
* Obtiene el valor RGB para un clave decimal pasada por par?metro
|
| 260 |
* @param value clave de la cual se quiere obtener el valor RGB de la paleta
|
| 261 |
* @return valor RGB
|
| 262 |
*/
|
| 263 |
public int getRGB(double value){ |
| 264 |
int init = 1; |
| 265 |
/*if(value > doubleHeuristica)
|
| 266 |
init = doubleRange.length >> 1;*/
|
| 267 |
for(int i = init; i <= doubleRange.length; i++) |
| 268 |
if(i < doubleRange.length){
|
| 269 |
if(value > doubleRange[i])
|
| 270 |
return palette[i - 1]; |
| 271 |
}else{
|
| 272 |
return palette[i - 1]; |
| 273 |
} |
| 274 |
return 0; |
| 275 |
} |
| 276 |
|
| 277 |
/**
|
| 278 |
* Genera una paleta a partir de una tabla de entradas de la forma
|
| 279 |
* <UL>
|
| 280 |
* <LI>(String) Nombre de la clase</LI>
|
| 281 |
* <LI>(Integer) Rojo</LI>
|
| 282 |
* <LI>(Integer) Verde</LI>
|
| 283 |
* <LI>(Integer) Azul</LI>
|
| 284 |
* <LI>(Double) Valor</LI>
|
| 285 |
* </UL>
|
| 286 |
* @param entries
|
| 287 |
*/
|
| 288 |
public void createPaletteFromTable(Object[][] entries, int type){ |
| 289 |
this.type = type;
|
| 290 |
nameClass = new String[entries.length]; |
| 291 |
palette = new int[entries.length]; |
| 292 |
if(type <= RasterBuf.TYPE_INT){
|
| 293 |
intRange = new int[entries.length]; |
| 294 |
intHeuristica = (int)((Double)entries[(entries.length >> 1)][4]).doubleValue(); |
| 295 |
}else{
|
| 296 |
doubleRange = new double[entries.length]; |
| 297 |
doubleHeuristica = ((Double)entries[(entries.length >> 1)][4]).doubleValue(); |
| 298 |
} |
| 299 |
for(int entry = 0; entry < entries.length; entry++){ |
| 300 |
//palette[entry] = 0xff000000;
|
| 301 |
for(int value = 0; value < entries[entry].length; value++){ |
| 302 |
switch(value){
|
| 303 |
case 0: nameClass[entry] = (String)entries[entry][value]; |
| 304 |
break;
|
| 305 |
case 1: palette[entry] |= ((((Integer)entries[entry][value]).intValue() & 0x000000ff) << 16); |
| 306 |
break;
|
| 307 |
case 2: palette[entry] |= ((((Integer)entries[entry][value]).intValue() & 0x000000ff) << 8); |
| 308 |
break;
|
| 309 |
case 3: palette[entry] |= (((Integer)entries[entry][value]).intValue() & 0x000000ff); |
| 310 |
break;
|
| 311 |
case 4: if(type <= RasterBuf.TYPE_INT) |
| 312 |
intRange[entry] = ((Double)entries[entry][value]).intValue();
|
| 313 |
else
|
| 314 |
doubleRange[entry] = ((Double)entries[entry][value]).doubleValue();
|
| 315 |
break;
|
| 316 |
case 5: palette[entry] |= ((((Integer)entries[entry][value]).intValue() & 0x000000ff) << 24); |
| 317 |
break;
|
| 318 |
} |
| 319 |
} |
| 320 |
} |
| 321 |
} |
| 322 |
|
| 323 |
/**
|
| 324 |
* Crea una paleta a partir de un objeto GdalColorTable. Esto es necesario para los ficheros
|
| 325 |
* que tienen un paleta asignada, como los gif, y que son tratados por Gdal. Se pasa la tabla
|
| 326 |
* de color le?da desde gdal y se crea directamente un objeto Palette.
|
| 327 |
* @param table
|
| 328 |
*/
|
| 329 |
public void createPaletteFromGdalColorTable(GdalColorTable table){ |
| 330 |
try{
|
| 331 |
type = RasterBuf.TYPE_BYTE; |
| 332 |
nameClass = new String[table.getColorEntryCount()]; |
| 333 |
palette = new int[table.getColorEntryCount()]; |
| 334 |
intRange = new int[table.getColorEntryCount()]; |
| 335 |
|
| 336 |
int cont = table.getColorEntryCount() - 1; |
| 337 |
for(int iEntry = 0; iEntry < table.getColorEntryCount(); iEntry++){ |
| 338 |
GdalColorEntry entry = table.getColorEntryAsRGB(iEntry); |
| 339 |
nameClass[cont] = "";
|
| 340 |
palette[cont] = 0x00000000;
|
| 341 |
palette[cont] |= ((entry.c4 & 0x000000ff) << 24); |
| 342 |
palette[cont] |= ((entry.c1 & 0x000000ff) << 16); |
| 343 |
palette[cont] |= ((entry.c2 & 0x000000ff) << 8); |
| 344 |
palette[cont] |= (entry.c3 & 0x000000ff);
|
| 345 |
intRange[cont] = iEntry; |
| 346 |
cont --; |
| 347 |
} |
| 348 |
}catch(GdalException ex){
|
| 349 |
//No se crea la paleta
|
| 350 |
} |
| 351 |
} |
| 352 |
|
| 353 |
/**
|
| 354 |
* Carga una paleta desde un fichero XML
|
| 355 |
* @param file nombre del fichero
|
| 356 |
* @param palette Nombre de la paleta
|
| 357 |
*/
|
| 358 |
public void loadPaletteFromXML(String file, String palette){ |
| 359 |
//TODO: Implemetar cargar paleta desde el directorio gvSIG
|
| 360 |
} |
| 361 |
|
| 362 |
/**
|
| 363 |
* Carga una paleta desde el fichero .rmf asociado a la imagen
|
| 364 |
* @param file nombre del fichero de imagen
|
| 365 |
*/
|
| 366 |
public void loadPaletteFromRMF(String file){ |
| 367 |
//TODO: Implemetar cargar paleta desde .rmf
|
| 368 |
} |
| 369 |
|
| 370 |
/**
|
| 371 |
* Salva una paleta desde al fichero .rmf asociado a la imagen
|
| 372 |
* @param file nombre del fichero de imagen
|
| 373 |
*/
|
| 374 |
public void savePaletteToRMF(String file){ |
| 375 |
//TODO: Implemetar salvar paleta a .rmf
|
| 376 |
} |
| 377 |
|
| 378 |
/**
|
| 379 |
* Obtiene la paleta
|
| 380 |
* @return Paleta
|
| 381 |
*/
|
| 382 |
public int[] getPalette() { |
| 383 |
return palette;
|
| 384 |
} |
| 385 |
|
| 386 |
/**
|
| 387 |
* Asigna una paleta
|
| 388 |
* @param palette Paleta
|
| 389 |
*/
|
| 390 |
public void setPalette(int[] palette) { |
| 391 |
this.palette = palette;
|
| 392 |
} |
| 393 |
|
| 394 |
/**
|
| 395 |
* Obtiene el tipo del rango de la paleta que corresponde con los tipos de rasterBuf
|
| 396 |
* @return Tipo de rango, entero o double
|
| 397 |
*/
|
| 398 |
public int getType() { |
| 399 |
return type;
|
| 400 |
} |
| 401 |
|
| 402 |
/**
|
| 403 |
* Asigna el tipo del rango de la paleta que corresponde con los tipos de rasterBuf
|
| 404 |
* @param Tipo de rango, entero o double
|
| 405 |
*/
|
| 406 |
public void setType(int type) { |
| 407 |
this.type = type;
|
| 408 |
} |
| 409 |
|
| 410 |
/**
|
| 411 |
* Asigna los rangos si el tipo es decimal
|
| 412 |
* @param rangos
|
| 413 |
*/
|
| 414 |
public void setDoubleRange(double[] value) { |
| 415 |
doubleRange = value; |
| 416 |
} |
| 417 |
|
| 418 |
/**
|
| 419 |
* Asigna los rangos si el tipo es entero
|
| 420 |
* @param values
|
| 421 |
*/
|
| 422 |
public void setIntRange(int[] values) { |
| 423 |
intRange = values; |
| 424 |
} |
| 425 |
|
| 426 |
/**
|
| 427 |
* Obtiene los rangos si el tipo es decimal
|
| 428 |
* @return rangos
|
| 429 |
*/
|
| 430 |
public double[] getDoubleRange() { |
| 431 |
return doubleRange;
|
| 432 |
} |
| 433 |
|
| 434 |
/**
|
| 435 |
* Obtiene los rangos si el tipo es entero
|
| 436 |
* @return rangos
|
| 437 |
*/
|
| 438 |
public int[] getIntRange() { |
| 439 |
return intRange;
|
| 440 |
} |
| 441 |
|
| 442 |
|
| 443 |
/**
|
| 444 |
* Obtiene los nombres de las clases de la paleta
|
| 445 |
* @return Array de cadenas. Cada una corresponde con un nombre de clase
|
| 446 |
* que corresponde a cada rango de tipos.
|
| 447 |
*/
|
| 448 |
public String[] getNameClass() { |
| 449 |
return nameClass;
|
| 450 |
} |
| 451 |
|
| 452 |
/**
|
| 453 |
* Asigna los nombres de las clases de la paleta
|
| 454 |
* @param names Array de cadenas. Cada una corresponde con un nombre de clase
|
| 455 |
* que corresponde a cada rango de tipos.
|
| 456 |
*/
|
| 457 |
public void setNameClass(String[] names) { |
| 458 |
nameClass = names; |
| 459 |
} |
| 460 |
|
| 461 |
|
| 462 |
} |