svn-gvsig-desktop / tags / Root_v061 / libraries / libCq CMS for java.old / src / org / cresques / io / raster / RasterFilter.java @ 4812
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1 | 3791 | nacho | /* Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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2 | 2809 | nacho | *
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3 | * Copyright (C) 2004-5.
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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 | * For more information, contact:
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20 | *
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21 | * cresques@gmail.com
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22 | */
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23 | package org.cresques.io.raster; |
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24 | |||
25 | import java.awt.Image; |
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26 | import java.util.Hashtable; |
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27 | |||
28 | 3791 | nacho | import org.cresques.geo.ViewPortData; |
29 | import org.cresques.px.Extent; |
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30 | 2809 | nacho | |
31 | 3791 | nacho | |
32 | 2809 | nacho | /**
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33 | * Filtro para raster. Ancestro de todos los filtros.
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34 | * @author Luis W. Sevilla (sevilla_lui@gva.es)
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35 | */
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36 | public abstract class RasterFilter implements IRasterFilter { |
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37 | 3791 | nacho | protected RasterBuf raster = null; |
38 | protected RasterStats stats = null; |
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39 | protected Image image = null; |
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40 | protected int[] px = new int[4]; |
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41 | protected int height = 0; |
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42 | protected int width = 0; |
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43 | protected Hashtable params = new Hashtable(); |
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44 | protected int incX = 1; |
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45 | protected int incY = 1; |
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46 | protected ViewPortData viewPortData = null; |
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47 | protected Extent extent = null; |
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48 | |||
49 | /**
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50 | * Variable que control la aplicaci?n o no del filtro. Si est? a false aunque est? en
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51 | * la pila el filtro no se ejecutar?.
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52 | */
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53 | protected boolean exec = true; |
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54 | 2809 | nacho | |
55 | /**
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56 | 3791 | nacho | * @author Nacho Brodin (brodin_ign@gva.es)
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57 | */
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58 | public static class Kernel{ |
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59 | public float[][] kernel = null; |
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60 | public Kernel(float[][] k){ |
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61 | this.kernel = k;
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62 | } |
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63 | |||
64 | public float kernelOperation(Kernel k){ |
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65 | float res = 0; |
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66 | for(int i=0;i<3;i++) |
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67 | for(int j=0;j<3;j++) |
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68 | res += kernel[i][j] * k.kernel[i][j]; |
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69 | return res;
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70 | } |
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71 | |||
72 | } |
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73 | |||
74 | /**
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75 | 2809 | nacho | * Constructor
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76 | */
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77 | public RasterFilter() {
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78 | } |
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79 | |||
80 | /**
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81 | * Aplica el filtro sobre el raster pasado pixel a pixel
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82 | */
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83 | public void execute() { |
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84 | pre(); |
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85 | if (exec) {
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86 | for (int y = 0; y < height; y = y + incY) |
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87 | for (int x = 0; x < width; x = x + incX) { |
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88 | process(x, y); |
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89 | } |
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90 | } |
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91 | post(); |
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92 | } |
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93 | |||
94 | /**
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95 | * Aplica el filtro sobre el raster pasado por lineas
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96 | */
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97 | public void executeLines() { |
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98 | if (exec) {
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99 | for (int y = 0; y < height; y++) |
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100 | processLine(y); |
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101 | } |
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102 | } |
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103 | |||
104 | /**
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105 | * A?ade un par?metro al filtro
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106 | 3791 | nacho | * @param name Clave del par?metro
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107 | * @param param Objeto pasado como par?metro
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108 | 2809 | nacho | */
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109 | public void addParam(String name, Object param) { |
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110 | params.put(name, param); |
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111 | } |
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112 | |||
113 | /**
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114 | 3791 | nacho | * Elimina un par?metro del filtro
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115 | * @param name Clave del par?metro a eliminar
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116 | */
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117 | public void removeParam(String name){ |
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118 | params.remove(name); |
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119 | } |
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120 | |||
121 | /**
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122 | * Obtiene un par?metro a partir de la clave
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123 | * @param name Par?metro
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124 | * @return Par?metro
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125 | */
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126 | public Object getParam(String name){ |
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127 | return params.get(name);
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128 | } |
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129 | |||
130 | /**
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131 | 2809 | nacho | * Funci?n que contiene el c?digo a ejecutar antes de aplicar el filtro
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132 | */
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133 | abstract public void pre(); |
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134 | |||
135 | /**
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136 | * Funci?n que contiene el c?digo a ejecutar despues de aplicar el filtro
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137 | */
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138 | abstract public void post(); |
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139 | |||
140 | /**
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141 | * Ejecuci?n del filtro para un pixel de la imagen
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142 | */
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143 | abstract public void process(int x, int y); |
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144 | |||
145 | /**
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146 | * Ejecuci?n del filtro para una l?nea de la imagen
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147 | */
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148 | abstract public void processLine(int y); |
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149 | |||
150 | /**
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151 | * Obtiene el tipo de datos del raster de entrada
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152 | */
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153 | abstract public int getInRasterDataType(); |
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154 | |||
155 | /**
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156 | * Obtiene el tipo de datos del raster de salida
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157 | */
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158 | abstract public int getOutRasterDataType(); |
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159 | |||
160 | /**
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161 | * Obtiene el resultado del filtro despues de su ejecuci?n a trav?s de una clave
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162 | * @param name clave para obtener un objeto resultado del filtro.
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163 | */
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164 | abstract public Object getResult(String name); |
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165 | 3791 | nacho | |
166 | /**
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167 | * @param viewPortData The viewPortData to set.
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168 | */
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169 | public void setViewPortData(ViewPortData viewPortData) { |
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170 | this.viewPortData = viewPortData;
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171 | } |
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172 | /**
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173 | * @param extent The extent to set.
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174 | */
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175 | public void setExtent(Extent extent) { |
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176 | this.extent = extent;
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177 | } |
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178 | 4197 | nacho | |
179 | /**
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180 | * Obtiene true si el filtro va a ser ejecutado o false si no va a serlo
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181 | * @return
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182 | */
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183 | public boolean isExec() { |
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184 | return exec;
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185 | } |
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186 | |||
187 | /**
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188 | * Asigna el valor a la variable exec. Esta estar? a true si el filtro se ejecutar? la pr?xima
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189 | * vez que se repinte o false si no se ejecuta.
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190 | * @param exec
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191 | */
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192 | public void setExec(boolean exec) { |
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193 | this.exec = exec;
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194 | } |
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195 | 2809 | nacho | } |