root / trunk / libraries / libRaster / src / org / gvsig / raster / grid / filter / RasterFilter.java @ 15778
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1 | 10740 | nacho | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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2 | *
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3 | * Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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18 | */
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19 | package org.gvsig.raster.grid.filter; |
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20 | |||
21 | import java.util.Hashtable; |
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22 | 15778 | nbrodin | import java.util.TreeMap; |
23 | 10740 | nacho | |
24 | 10939 | nacho | import org.gvsig.raster.dataset.IBuffer; |
25 | 11714 | bsanchez | import org.gvsig.raster.dataset.Params; |
26 | 12383 | nacho | import org.gvsig.raster.datastruct.Extent; |
27 | 10740 | nacho | /**
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28 | * Filtro para raster. Ancestro de todos los filtros.
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29 | 12325 | bsanchez | *
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30 | 10740 | nacho | * @author Nacho Brodin (nachobrodin@gmail.com)
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31 | * @author Luis W. Sevilla (sevilla_lui@gva.es)
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32 | */
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33 | 11899 | bsanchez | public abstract class RasterFilter implements IRasterFilter, Cloneable { |
34 | 11963 | bsanchez | protected IBuffer raster = null; |
35 | protected int height = 0; |
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36 | protected int width = 0; |
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37 | 15778 | nbrodin | protected Hashtable params = new Hashtable(); |
38 | protected TreeMap environment = new TreeMap(); |
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39 | 11963 | bsanchez | protected Extent extent = null; |
40 | private int percent = 0; |
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41 | private boolean canceled = false; |
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42 | 11986 | bsanchez | private String fName = ""; |
43 | 10740 | nacho | /**
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44 | 11963 | bsanchez | * Variable que control la aplicaci?n o no del filtro. Si est? a false aunque est? en
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45 | * la pila el filtro no se ejecutar?.
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46 | 10740 | nacho | */
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47 | 11963 | bsanchez | protected boolean exec = true; |
48 | 11767 | nacho | |
49 | 11963 | bsanchez | /**
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50 | 14249 | nbrodin | * Clase que representa un kernel de NxN p?xeles para realizar operaciones sobre
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51 | * un pixel.
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52 | 11963 | bsanchez | * @author Nacho Brodin (nachobrodin@gmail.com)
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53 | */
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54 | public static class Kernel { |
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55 | 11811 | bsanchez | public double[][] kernel = null; |
56 | protected double divisor = 0; |
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57 | 11963 | bsanchez | |
58 | 14249 | nbrodin | /**
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59 | * Constructor. Crea la matriz de datos para el kernel.
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60 | * @param k datos del kernel
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61 | */
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62 | 11811 | bsanchez | public Kernel(double[][] k) { |
63 | this.kernel = k;
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64 | 10740 | nacho | |
65 | 11811 | bsanchez | for (int i = 0; i < kernel.length; i++) |
66 | for (int j = 0; j < kernel[0].length; j++) |
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67 | divisor = divisor + kernel[i][j]; |
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68 | } |
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69 | 11963 | bsanchez | |
70 | 14249 | nbrodin | /**
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71 | * Constructor. Crea la matriz de datos para el kernel.
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72 | * @param k datos del kernel
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73 | */
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74 | 14559 | nbrodin | public Kernel(double[][] k, double divisor) { |
75 | 11811 | bsanchez | this.kernel = k;
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76 | this.divisor = divisor;
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77 | } |
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78 | 11963 | bsanchez | |
79 | 11811 | bsanchez | public double kernelOperation(Kernel k) { |
80 | double res = 0; |
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81 | for (int i = 0; i < kernel.length; i++) |
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82 | for (int j = 0; j < kernel[0].length; j++) |
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83 | res += kernel[i][j] * k.kernel[i][j]; |
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84 | return res;
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85 | } |
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86 | 11963 | bsanchez | |
87 | 14249 | nbrodin | /**
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88 | * Aplica la operaci?n de convoluci?n del kernel con otro kernel
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89 | * pasado por par?metro
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90 | * @param k
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91 | * @return
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92 | */
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93 | 11811 | bsanchez | public double convolution(Kernel k) { |
94 | 14249 | nbrodin | double res = this.kernelOperation(k); |
95 | 11811 | bsanchez | if (this.divisor != 0) |
96 | res = res / divisor; |
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97 | 14441 | gsdiego | //return Math.abs(res);
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98 | return res;
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99 | 11811 | bsanchez | } |
100 | 11963 | bsanchez | |
101 | 10740 | nacho | public double getDivisor() { |
102 | return divisor;
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103 | } |
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104 | 11963 | bsanchez | |
105 | 10740 | nacho | public void setDivisor(double divisor) { |
106 | this.divisor = divisor;
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107 | } |
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108 | 11963 | bsanchez | |
109 | 14249 | nbrodin | /**
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110 | * Obtiene el tama?o del kernel que viene dado por
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111 | * el n?mero de pixeles de su lado.
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112 | * @return
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113 | */
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114 | 12030 | bsanchez | public int getLado() { |
115 | 10740 | nacho | return kernel.length;
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116 | } |
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117 | 14249 | nbrodin | |
118 | /**
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119 | * Aplica ls operaci?n 0xff para todos los elementos del
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120 | * kernel. Presupone que este es de tipo byte y no hace ninguna
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121 | * comprobaci?n al respecto. Se deja en manos del usuario aplicar esta
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122 | * operaci?n solo cuando los elementos del kernel sean de este tipo de dato.
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123 | */
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124 | public void rgbNormalization() { |
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125 | for (int i = 0; i < kernel.length; i++) |
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126 | for (int j = 0; j < kernel[0].length; j++) |
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127 | kernel[i][j] = ((byte)kernel[i][j]) & 0xff; |
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128 | } |
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129 | 11963 | bsanchez | } |
130 | 10740 | nacho | |
131 | 11963 | bsanchez | /**
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132 | * Constructor
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133 | */
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134 | 11986 | bsanchez | public RasterFilter() {
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135 | 11963 | bsanchez | } |
136 | 10740 | nacho | |
137 | 11963 | bsanchez | /**
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138 | * Aplica el filtro sobre el raster pasado pixel a pixel
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139 | 12325 | bsanchez | * @throws InterruptedException
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140 | 11963 | bsanchez | */
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141 | 12325 | bsanchez | public void execute() throws InterruptedException { |
142 | 11811 | bsanchez | pre(); |
143 | percent = 0;
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144 | if (exec) {
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145 | 11930 | nacho | for (int row = 0; row < height; row ++) { |
146 | 11963 | bsanchez | for (int col = 0; col < width; col ++) |
147 | 11930 | nacho | process(col, row); |
148 | 12325 | bsanchez | if (Thread.currentThread().isInterrupted()) |
149 | throw new InterruptedException("Process execute Filter"); |
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150 | 11930 | nacho | percent = (row * 100) / height;
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151 | 11811 | bsanchez | } |
152 | } |
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153 | if (isCanceled())
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154 | return;
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155 | percent = 100;
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156 | post(); |
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157 | } |
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158 | 10740 | nacho | |
159 | 11963 | bsanchez | /**
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160 | 11811 | bsanchez | * A?ade un par?metro al filtro
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161 | 12325 | bsanchez | *
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162 | 11811 | bsanchez | * @param name Clave del par?metro
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163 | * @param param Objeto pasado como par?metro
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164 | */
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165 | 11963 | bsanchez | public void addParam(String name, Object param) { |
166 | 12180 | bsanchez | if (param != null) |
167 | 11963 | bsanchez | params.put(name, param); |
168 | 12180 | bsanchez | else
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169 | params.remove(name); |
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170 | 11963 | bsanchez | } |
171 | 10740 | nacho | |
172 | 11963 | bsanchez | /**
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173 | * Elimina un par?metro del filtro
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174 | * @param name Clave del par?metro a eliminar
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175 | */
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176 | 12030 | bsanchez | public void removeParam(String name) { |
177 | 11963 | bsanchez | params.remove(name); |
178 | } |
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179 | |||
180 | /**
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181 | * Obtiene un par?metro a partir de la clave
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182 | * @param name Par?metro
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183 | * @return Par?metro
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184 | */
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185 | 12030 | bsanchez | public Object getParam(String name) { |
186 | 11963 | bsanchez | return params.get(name);
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187 | } |
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188 | |||
189 | /**
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190 | 10740 | nacho | * @param extent The extent to set.
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191 | */
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192 | public void setExtent(Extent extent) { |
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193 | this.extent = extent;
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194 | } |
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195 | |||
196 | /**
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197 | * Obtiene true si el filtro va a ser ejecutado o false si no va a serlo
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198 | * @return
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199 | */
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200 | public boolean isExec() { |
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201 | return exec;
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202 | } |
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203 | |||
204 | /**
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205 | * Asigna el valor a la variable exec. Esta estar? a true si el filtro se ejecutar? la pr?xima
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206 | * vez que se repinte o false si no se ejecuta.
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207 | * @param exec
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208 | */
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209 | public void setExec(boolean exec) { |
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210 | this.exec = exec;
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211 | } |
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212 | |||
213 | 11811 | bsanchez | /**
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214 | * Establece si se ha de cancelar un proceso de filtrado o no.
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215 | * @param value
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216 | */
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217 | public void setCanceled(boolean value) { |
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218 | canceled = value; |
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219 | } |
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220 | 10740 | nacho | |
221 | 11811 | bsanchez | /**
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222 | * Devuelve si se ha cancelado el proceso de filtrar.
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223 | * @return
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224 | */
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225 | public boolean isCanceled() { |
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226 | return canceled;
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227 | } |
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228 | 11963 | bsanchez | |
229 | 11811 | bsanchez | /**
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230 | * Pone a cero el contador del porcentaje del proceso de filtrado
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231 | * @return
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232 | */
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233 | public void resetPercent() { |
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234 | percent = 0;
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235 | } |
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236 | 10740 | nacho | |
237 | 11811 | bsanchez | /**
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238 | * Obtiene el porcentaje recorrido del proceso de filtrado
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239 | * @return
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240 | */
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241 | public int getPercent() { |
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242 | return percent;
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243 | 11963 | bsanchez | } |
244 | 10740 | nacho | |
245 | 11963 | bsanchez | /**
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246 | * Funci?n que contiene el c?digo a ejecutar antes de aplicar el filtro
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247 | */
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248 | abstract public void pre(); |
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249 | 10740 | nacho | |
250 | 11963 | bsanchez | /**
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251 | * Funci?n que contiene el c?digo a ejecutar despues de aplicar el filtro
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252 | */
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253 | abstract public void post(); |
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254 | 11811 | bsanchez | |
255 | 11963 | bsanchez | /**
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256 | * Ejecuci?n del filtro para un pixel de la imagen
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257 | */
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258 | abstract public void process(int x, int y); |
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259 | 11811 | bsanchez | |
260 | 11963 | bsanchez | /**
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261 | * Obtiene el tipo de datos del raster de entrada
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262 | */
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263 | abstract public int getInRasterDataType(); |
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264 | 11811 | bsanchez | |
265 | 11963 | bsanchez | /**
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266 | * Obtiene el tipo de datos del raster de salida
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267 | */
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268 | abstract public int getOutRasterDataType(); |
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269 | 11811 | bsanchez | |
270 | 11963 | bsanchez | /**
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271 | * Obtiene el resultado del filtro despues de su ejecuci?n a trav?s de una clave
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272 | * @param name clave para obtener un objeto resultado del filtro.
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273 | */
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274 | abstract public Object getResult(String name); |
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275 | |||
276 | 11811 | bsanchez | /*
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277 | * (non-Javadoc)
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278 | * @see org.gvsig.raster.grid.filter.IRasterFilter#getGroup()
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279 | */
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280 | abstract public String getGroup(); |
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281 | 11963 | bsanchez | |
282 | 11811 | bsanchez | /**
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283 | * Obtener que datos puede tratar una interfaz con sus valores
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284 | 12030 | bsanchez | * @param nameFilter. Cada tipo de filtro puede tener parametros distintos
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285 | 11811 | bsanchez | * @return
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286 | */
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287 | 12030 | bsanchez | abstract public Params getUIParams(String nameFilter); |
288 | 11864 | bsanchez | |
289 | 11963 | bsanchez | /**
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290 | * Obtener que las entradas que puede aperecer un filtro en el interfaz
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291 | * @return
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292 | */
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293 | abstract public String[] getNames(); |
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294 | |||
295 | 12333 | bsanchez | /**
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296 | * Devolver? un booleano indicando si es visible o no en el panel de filtros.
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297 | * @return
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298 | */
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299 | public boolean isVisible() { |
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300 | return true; |
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301 | } |
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302 | |||
303 | 11986 | bsanchez | /* (non-Javadoc)
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304 | * @see java.lang.Object#clone()
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305 | 11963 | bsanchez | */
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306 | 11986 | bsanchez | public Object clone() throws CloneNotSupportedException { |
307 | return super.clone(); |
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308 | 11963 | bsanchez | } |
309 | |||
310 | /**
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311 | 11986 | bsanchez | * Devuelve el nombre interno del filtro
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312 | * @return the fName
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313 | 11963 | bsanchez | */
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314 | 11986 | bsanchez | public String getName() { |
315 | return fName;
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316 | 11963 | bsanchez | } |
317 | |||
318 | 11986 | bsanchez | /**
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319 | * @param name the fName to set
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320 | 11864 | bsanchez | */
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321 | 11986 | bsanchez | public void setName(String name) { |
322 | fName = name; |
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323 | 11864 | bsanchez | } |
324 | 15778 | nbrodin | |
325 | /**
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326 | * Obtiene el TreeMap con los par?metros del entorno
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327 | * @return TreeMap
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328 | */
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329 | public TreeMap getEnv() { |
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330 | return environment;
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331 | } |
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332 | |||
333 | /**
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334 | * Asigna el TreeMap con los par?metros del entorno
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335 | * @param env
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336 | */
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337 | public void setEnv(TreeMap env) { |
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338 | this.environment = env;
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339 | } |
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340 | 10740 | nacho | } |