svn-gvsig-desktop / trunk / libraries / libCq CMS for java.old / src / org / cresques / io / GeoRasterFile.java @ 8281
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1 | 2 | luisw | /*
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2 | 2809 | nacho | * Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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3 | *
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4 | * Copyright (C) 2004-5.
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5 | 2 | luisw | *
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6 | 2809 | nacho | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 2
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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19 | *
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20 | * For more information, contact:
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21 | *
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22 | * cresques@gmail.com
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23 | 2 | luisw | */
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24 | package org.cresques.io; |
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25 | |||
26 | 130 | luisw | import java.awt.Component; |
27 | 2809 | nacho | import java.awt.Dimension; |
28 | 2 | luisw | import java.awt.Image; |
29 | 2809 | nacho | import java.awt.geom.Point2D; |
30 | import java.awt.image.DataBuffer; |
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31 | 5140 | nacho | import java.io.BufferedReader; |
32 | 5155 | nacho | import java.io.File; |
33 | 5140 | nacho | import java.io.FileInputStream; |
34 | import java.io.FileNotFoundException; |
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35 | import java.io.FileReader; |
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36 | 2809 | nacho | import java.io.FileWriter; |
37 | import java.io.IOException; |
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38 | 157 | luisw | import java.lang.reflect.Constructor; |
39 | import java.lang.reflect.InvocationTargetException; |
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40 | import java.util.TreeMap; |
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41 | 2 | luisw | |
42 | 94 | luisw | import org.cresques.cts.ICoordTrans; |
43 | import org.cresques.cts.IProjection; |
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44 | 5978 | nacho | import org.cresques.filter.PixelFilter; |
45 | import org.cresques.filter.SimplePixelFilter; |
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46 | 5991 | nacho | import org.cresques.io.data.Metadata; |
47 | import org.cresques.io.data.RasterMetaFileTags; |
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48 | 2 | luisw | import org.cresques.px.Extent; |
49 | 96 | luisw | import org.cresques.px.IObjList; |
50 | 2 | luisw | import org.cresques.px.PxContour; |
51 | 96 | luisw | import org.cresques.px.PxObjList; |
52 | 5140 | nacho | import org.kxml2.io.KXmlParser; |
53 | import org.xmlpull.v1.XmlPullParserException; |
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54 | 96 | luisw | |
55 | 2 | luisw | /**
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56 | 157 | luisw | * Manejador de ficheros raster georeferenciados.
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57 | 2 | luisw | *
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58 | 157 | luisw | * Esta clase abstracta es el ancestro de todas las clases que proporcionan
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59 | * soporte para ficheros raster georeferenciados.<br>
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60 | * Actua tambien como una 'Fabrica', ocultando al cliente la manera en que
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61 | * se ha implementado ese manejo. Una clase nueva que soportara un nuevo
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62 | * tipo de raster tendr?a que registrar su extensi?n o extensiones usando
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63 | * el m?todo @see registerExtension.<br>
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64 | 50 | luisw | * @author "Luis W. Sevilla" <sevilla_lui@gva.es>*
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65 | 2 | luisw | */
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66 | 50 | luisw | |
67 | 2 | luisw | public abstract class GeoRasterFile extends GeoFile { |
68 | 2809 | nacho | |
69 | 184 | luisw | /**
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70 | 2809 | nacho | * Flag que representa a la banda del Rojo
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71 | */
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72 | 4965 | nacho | public static final int RED_BAND = 0x01; |
73 | 2809 | nacho | |
74 | /**
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75 | * Flag que representa a la banda del Verde
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76 | */
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77 | 4965 | nacho | public static final int GREEN_BAND = 0x02; |
78 | 2809 | nacho | |
79 | /**
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80 | * Flag que representa a la banda del Azul
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81 | */
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82 | 4965 | nacho | public static final int BLUE_BAND = 0x04; |
83 | private static TreeMap supportedExtensions = null; |
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84 | protected Component updatable = null; |
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85 | protected boolean doTransparency = false; |
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86 | private boolean verifySize = false; |
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87 | 3084 | nacho | |
88 | 2849 | nacho | /**
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89 | 184 | luisw | * Filtro para raster.
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90 | * Permite eliminar la franja inutil alrededor de un raster girado o de
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91 | * un mosaico de borde irregular.
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92 | *
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93 | * Funciona bien solo con raster en tonos de gris, porque se basa que
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94 | * el valor del pixel no supere un determinado valor 'umbral' que se
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95 | * le pasa al constructor.
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96 | *
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97 | * Desarrollado para 'limpiar' los bordes de los mosaicos del SIG
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98 | * Oleicola. Para ese caso los par?metros del constructo son:
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99 | * PixelFilter(0x10ffff00, 0xff000000, 0xf0f0f0);
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100 | */
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101 | 4965 | nacho | protected PixelFilter tFilter = null; |
102 | 2809 | nacho | |
103 | /**
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104 | * Asignaci?n de banda del Rojo a una banda de la imagen
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105 | */
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106 | 4965 | nacho | protected int rBandNr = 1; |
107 | 2809 | nacho | |
108 | /**
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109 | * Asignaci?n de banda del Verde a una banda de la imagen
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110 | */
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111 | 4965 | nacho | protected int gBandNr = 1; |
112 | 2809 | nacho | |
113 | /**
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114 | * Asignaci?n de banda del Azul a una banda de la imagen
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115 | */
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116 | 4965 | nacho | protected int bBandNr = 1; |
117 | 2809 | nacho | |
118 | /**
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119 | * N?mero de bandas de la imagen
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120 | */
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121 | 4965 | nacho | protected int bandCount = 1; |
122 | private int dataType = DataBuffer.TYPE_BYTE; |
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123 | 8281 | nacho | /**
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124 | * Par?metros de transformaci?n del fichero .rmf. Estas variables tendr?n valores distinto
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125 | * de 0 si la funci?n rmfExists() devuelve true.
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126 | */
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127 | protected double originX = 0D, originY = 0D, w = 0D, h = 0D; |
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128 | protected double pixelSizeX = 0D, pixelSizeY = 0D; |
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129 | protected double imageWidth = 0D, imageHeight = 0D; |
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130 | protected double shearX = 0D, shearY = 0D; |
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131 | 184 | luisw | |
132 | 157 | luisw | static {
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133 | supportedExtensions = new TreeMap(); |
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134 | 3084 | nacho | supportedExtensions.put("ecw", EcwFile.class);
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135 | supportedExtensions.put("jp2", EcwFile.class);
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136 | 6052 | luisw2 | |
137 | 6037 | nacho | supportedExtensions.put("sid", MrSidFile.class);
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138 | 6052 | luisw2 | |
139 | 6037 | nacho | supportedExtensions.put("bmp", GdalFile.class);
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140 | supportedExtensions.put("gif", GdalFile.class);
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141 | supportedExtensions.put("img", GdalFile.class);
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142 | supportedExtensions.put("tif", GdalFile.class);
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143 | 3084 | nacho | supportedExtensions.put("tiff", GdalFile.class);
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144 | 6037 | nacho | supportedExtensions.put("jpg", GdalFile.class);
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145 | supportedExtensions.put("png", GdalFile.class);
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146 | 6052 | luisw2 | //supportedExtensions.put("jpg", TifGeoRefFile.class);
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147 | //supportedExtensions.put("png", TifGeoRefFile.class);
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148 | //supportedExtensions.put("dat", GdalFile.class);
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149 | 157 | luisw | } |
150 | |||
151 | 50 | luisw | /**
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152 | 157 | luisw | * Factoria para abrir distintos tipos de raster.
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153 | *
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154 | * @param proj Proyecci?n en la que est? el raster.
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155 | * @param fName Nombre del fichero.
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156 | * @return GeoRasterFile, o null si hay problemas.
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157 | 50 | luisw | */
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158 | 94 | luisw | public static GeoRasterFile openFile(IProjection proj, String fName) { |
159 | 58 | luisw | String ext = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
160 | 157 | luisw | GeoRasterFile grf = null;
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161 | // TODO NotSupportedExtensionException
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162 | if (!supportedExtensions.containsKey(ext)) return grf; |
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163 | /**/
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164 | Class clase = (Class) supportedExtensions.get(ext); |
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165 | Class [] args = {IProjection.class, String.class}; |
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166 | try {
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167 | Constructor hazNuevo = clase.getConstructor(args);
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168 | Object [] args2 = {proj, fName}; |
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169 | grf = (GeoRasterFile) hazNuevo.newInstance(args2); |
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170 | 6064 | nacho | grf.setFileSize(new File(fName).length()); |
171 | 157 | luisw | } catch (SecurityException e) { |
172 | // TODO Auto-generated catch block
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173 | e.printStackTrace(); |
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174 | } catch (NoSuchMethodException e) { |
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175 | // TODO Auto-generated catch block
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176 | e.printStackTrace(); |
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177 | } catch (IllegalArgumentException e) { |
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178 | // TODO Auto-generated catch block
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179 | e.printStackTrace(); |
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180 | } catch (InstantiationException e) { |
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181 | // TODO Auto-generated catch block
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182 | e.printStackTrace(); |
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183 | } catch (IllegalAccessException e) { |
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184 | // TODO Auto-generated catch block
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185 | e.printStackTrace(); |
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186 | } catch (InvocationTargetException e) { |
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187 | // TODO Auto-generated catch block
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188 | e.printStackTrace(); |
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189 | 2809 | nacho | } |
190 | 157 | luisw | |
191 | return grf;
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192 | 50 | luisw | } |
193 | 157 | luisw | |
194 | /**
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195 | * Registra una clase que soporta una extensi?n raster.
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196 | * @param ext extensi?n soportada.
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197 | * @param clase clase que la soporta.
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198 | */
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199 | public static void registerExtension(String ext, Class clase) { |
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200 | ext = ext.toLowerCase(); |
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201 | 2809 | nacho | System.out.println("RASTER: extension '"+ext+"' supported."); |
202 | 157 | luisw | supportedExtensions.put(ext, clase); |
203 | } |
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204 | |||
205 | 2809 | nacho | /**
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206 | * Tipo de fichero soportado.
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207 | * Devuelve true si el tipo de fichero (extension) est? soportado, si no
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208 | * devuelve false.
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209 | *
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210 | * @param fName Fichero raster
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211 | * @return true si est? soportado, si no false.
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212 | */
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213 | public static boolean fileIsSupported(String fName) { |
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214 | String ext = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
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215 | return supportedExtensions.containsKey(ext);
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216 | } |
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217 | 184 | luisw | |
218 | 2809 | nacho | /**
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219 | * Constructor
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220 | * @param proj Proyecci?n
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221 | * @param name Nombre del fichero de imagen.
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222 | */
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223 | 94 | luisw | public GeoRasterFile(IProjection proj, String name) { |
224 | 13 | luisw | super(proj, name);
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225 | 2 | luisw | } |
226 | 157 | luisw | |
227 | 2809 | nacho | /**
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228 | * Carga un fichero raster. Puede usarse para calcular el extent e instanciar
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229 | * un objeto de este tipo.
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230 | */
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231 | 157 | luisw | abstract public GeoFile load(); |
232 | |||
233 | 2809 | nacho | /**
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234 | * Cierra el fichero y libera los recursos.
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235 | */
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236 | abstract public void close(); |
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237 | |||
238 | 5140 | nacho | /**
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239 | * Obtiene la codificaci?n del fichero XML
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240 | * @param file Nombre del fichero XML
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241 | * @return Codificaci?n
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242 | */
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243 | private String readFileEncoding(String file){ |
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244 | FileReader fr;
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245 | String encoding = null; |
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246 | try
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247 | { |
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248 | fr = new FileReader(file); |
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249 | BufferedReader br = new BufferedReader(fr); |
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250 | char[] buffer = new char[100]; |
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251 | br.read(buffer); |
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252 | StringBuffer st = new StringBuffer(new String(buffer)); |
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253 | String searchText = "encoding=\""; |
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254 | int index = st.indexOf(searchText);
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255 | if (index>-1) { |
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256 | st.delete(0, index+searchText.length());
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257 | encoding = st.substring(0, st.indexOf("\"")); |
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258 | } |
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259 | 5155 | nacho | fr.close(); |
260 | 5140 | nacho | } catch(FileNotFoundException ex) { |
261 | ex.printStackTrace(); |
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262 | } catch (IOException e) { |
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263 | e.printStackTrace(); |
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264 | } |
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265 | return encoding;
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266 | } |
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267 | |||
268 | 5175 | nacho | private double[] parserExtent(KXmlParser parser) throws XmlPullParserException, IOException { |
269 | double originX = 0D, originY = 0D, w = 0D, h = 0D; |
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270 | double pixelSizeX = 0D, pixelSizeY = 0D; |
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271 | 8281 | nacho | double shearX = 0D, shearY = 0D; |
272 | 5175 | nacho | |
273 | boolean end = false; |
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274 | int tag = parser.next();
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275 | while (!end) {
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276 | switch(tag) {
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277 | case KXmlParser.START_TAG:
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278 | if(parser.getName() != null){ |
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279 | if (parser.getName().equals(RasterMetaFileTags.POSX)){
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280 | originX = Double.parseDouble(parser.nextText());
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281 | }else if (parser.getName().equals(RasterMetaFileTags.POSY)){ |
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282 | originY = Double.parseDouble(parser.nextText());
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283 | }else if (parser.getName().equals(RasterMetaFileTags.PX_SIZE_X)){ |
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284 | pixelSizeX = Double.parseDouble(parser.nextText());
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285 | }else if (parser.getName().equals(RasterMetaFileTags.PX_SIZE_Y)){ |
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286 | pixelSizeY = Double.parseDouble(parser.nextText());
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287 | 8281 | nacho | }else if (parser.getName().equals(RasterMetaFileTags.ROTX)){ |
288 | shearX = Double.parseDouble(parser.nextText());
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289 | }else if (parser.getName().equals(RasterMetaFileTags.ROTY)){ |
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290 | shearY = Double.parseDouble(parser.nextText());
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291 | 5175 | nacho | }else if (parser.getName().equals(RasterMetaFileTags.WIDTH)){ |
292 | w = Double.parseDouble(parser.nextText());
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293 | }else if (parser.getName().equals(RasterMetaFileTags.HEIGHT)){ |
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294 | h = Double.parseDouble(parser.nextText());
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295 | } |
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296 | } |
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297 | break;
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298 | case KXmlParser.END_TAG:
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299 | if (parser.getName().equals(RasterMetaFileTags.BBOX))
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300 | end = true;
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301 | break;
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302 | case KXmlParser.TEXT:
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303 | break;
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304 | } |
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305 | tag = parser.next(); |
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306 | } |
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307 | |||
308 | 8281 | nacho | double[] values = {originX, originY, w, h, pixelSizeX, pixelSizeY, shearX, shearY}; |
309 | 5175 | nacho | return values;
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310 | } |
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311 | |||
312 | 5155 | nacho | /**
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313 | * Obtiene la informaci?n de georreferenciaci?n asociada a la imagen en un fichero .rmf. Esta
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314 | * georreferenciaci?n tiene la caracteristica de que tiene prioridad sobre la de la imagen.
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315 | * Es almacenada en la clase GeoFile en la variable virtualExtent.
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316 | * @param file Fichero de metadatos .rmf
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317 | */
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318 | protected void readGeoInfo(String file){ |
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319 | String rmf = file.substring(0, file.lastIndexOf(".") + 1) + "rmf"; |
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320 | File rmfFile = new File(rmf); |
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321 | if(!rmfFile.exists())
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322 | return;
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323 | |||
324 | 5350 | nacho | boolean georefOk = false; |
325 | 5155 | nacho | |
326 | FileReader fr = null; |
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327 | 5140 | nacho | String v = null; |
328 | try {
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329 | 5155 | nacho | fr = new FileReader(rmf); |
330 | 5140 | nacho | KXmlParser parser = new KXmlParser();
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331 | 5155 | nacho | parser.setInput(new FileInputStream(rmf), readFileEncoding(rmf)); |
332 | 5140 | nacho | int tag = parser.nextTag();
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333 | if ( parser.getEventType() != KXmlParser.END_DOCUMENT ){
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334 | 5175 | nacho | parser.require(KXmlParser.START_TAG, null, RasterMetaFileTags.MAIN_TAG);
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335 | 5140 | nacho | while(tag != KXmlParser.END_DOCUMENT) {
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336 | switch(tag) {
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337 | case KXmlParser.START_TAG:
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338 | 5175 | nacho | if (parser.getName().equals(RasterMetaFileTags.LAYER)) {
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339 | 5155 | nacho | int layerListTag = parser.next();
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340 | boolean geoRefEnd = false; |
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341 | while (!geoRefEnd){
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342 | if(parser.getName() != null){ |
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343 | 5175 | nacho | if (parser.getName().equals(RasterMetaFileTags.PROJ)){
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344 | 5155 | nacho | //System.out.println("PROJ:"+parser.nextText());
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345 | 5175 | nacho | } else if (parser.getName().equals(RasterMetaFileTags.BBOX)){ |
346 | double[] values = parserExtent(parser); |
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347 | originX = values[0];
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348 | originY = values[1];
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349 | w = values[2];
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350 | h = values[3];
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351 | pixelSizeX = values[4];
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352 | pixelSizeY = values[5];
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353 | 8281 | nacho | shearX = values[6];
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354 | shearY = values[7];
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355 | 5350 | nacho | georefOk = true;
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356 | 5175 | nacho | } else if (parser.getName().equals(RasterMetaFileTags.DIM)){ |
357 | boolean DimEnd = false; |
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358 | while (!DimEnd){
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359 | 5155 | nacho | layerListTag = parser.next(); |
360 | if(parser.getName() != null){ |
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361 | 5175 | nacho | if (parser.getName().equals(RasterMetaFileTags.PX_WIDTH)){
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362 | imageWidth = Double.parseDouble(parser.nextText());
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363 | }else if (parser.getName().equals(RasterMetaFileTags.PX_HEIGHT)){ |
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364 | imageHeight = Double.parseDouble(parser.nextText());
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365 | DimEnd = true;
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366 | } |
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367 | 5155 | nacho | } |
368 | } |
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369 | geoRefEnd = true;
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370 | 5175 | nacho | } |
371 | 5140 | nacho | } |
372 | layerListTag = parser.next(); |
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373 | } |
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374 | } |
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375 | break;
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376 | case KXmlParser.END_TAG:
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377 | break;
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378 | case KXmlParser.TEXT:
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379 | break;
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380 | } |
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381 | tag = parser.next(); |
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382 | } |
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383 | parser.require(KXmlParser.END_DOCUMENT, null, null); |
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384 | } |
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385 | 5155 | nacho | |
386 | 5350 | nacho | if(georefOk){
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387 | rmfExists = true;
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388 | 8281 | nacho | |
389 | 5350 | nacho | setExtentTransform(originX, originY, w, h, pixelSizeX, pixelSizeY); |
390 | 8281 | nacho | createExtentsFromRMF( originX, originY, pixelSizeX, pixelSizeY, |
391 | imageWidth, imageHeight, shearX, shearY); |
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392 | 5350 | nacho | } |
393 | 5175 | nacho | |
394 | 5140 | nacho | } catch (FileNotFoundException fnfEx) { |
395 | } catch (XmlPullParserException xmlEx) {
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396 | xmlEx.printStackTrace(); |
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397 | } catch (IOException e) { |
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398 | } |
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399 | 5155 | nacho | try{
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400 | if(fr != null) |
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401 | fr.close(); |
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402 | }catch(IOException ioEx){ |
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403 | //No est? abierto el fichero por lo que no hacemos nada
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404 | } |
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405 | 5140 | nacho | } |
406 | 5175 | nacho | |
407 | /**
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408 | 8281 | nacho | * <P>
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409 | * Calcula el extent de la imagen a partir del fichero rmf con y sin rotaci?n. El extent con rotaci?n corresponde
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410 | * a la variable extent que contiene el extent verdadero marcado por el fichero de georreferenciaci?n .rmf. El extent
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411 | * sin rotaci?n requestExtent es utilizado para realizar la petici?n ya que la petici?n al driver no se puede
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412 | * hacer con coordenadas rotadas.
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413 | *
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414 | * El calculo de la bounding box rotada lo hace con los valores de transformaci?n leidos desde el fichero .rmf.
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415 | * </p>
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416 | * <P>
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417 | * Para el calculo de una esquina aplicamos la formula siguiente:<BR>
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418 | * PtoX = originX + pixelSizeX * x + shearX * y;<BR>
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419 | * PtoY = originY + shearY * x + pixelSizeY * y;<BR>
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420 | * Aplicandolo a las cuatro esquinas sustituimos en cada una de ellas por.
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421 | * </P>
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422 | * <UL>
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423 | * <LI>Esquina superior izquierda: x = 0; y = 0;</LI>
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424 | * <LI>Esquina superior derecha: x = MaxX; y = 0;</LI>
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425 | * <LI>Esquina inferior izquierda: x = 0; y = MaxY;</LI>
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426 | * <LI>Esquina inferior derecha: x = MaxX; y = MaxY;</LI>
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427 | * </UL>
|
||
428 | * <P>
|
||
429 | * quedandonos en los cuatro casos:
|
||
430 | * </P>
|
||
431 | * <UL>
|
||
432 | * <LI>Esquina superior izquierda: originX; originY;</LI>
|
||
433 | * <LI>Esquina superior derecha: PtoX = originX + pixelSizeX * x; PtoY = originY + shearY * x;</LI>
|
||
434 | * <LI>Esquina inferior izquierda: PtoX = originX + shearX * y; PtoY = originY + pixelSizeY * y;</LI>
|
||
435 | * <LI>Esquina inferior derecha: PtoX = originX + pixelSizeX * x + shearX * y; PtoY = originY + shearY * x + pixelSizeY * y;</LI>
|
||
436 | * </UL>
|
||
437 | *
|
||
438 | * <P>
|
||
439 | * El calculo de la bounding box se realizar? de la misma forma pero anulando los parametros de shearing.
|
||
440 | * </P>
|
||
441 | *
|
||
442 | * @param originX Coordenada X de origen del raster
|
||
443 | * @param originY Coordenada Y de origen del raster
|
||
444 | * @param pixelSizeX Tama?o de pixel en X
|
||
445 | * @param pixelSizeY Tama?o de pixel en Y
|
||
446 | * @param imageWidth Ancho del raster en pixels
|
||
447 | * @param imageHeight Alto del raster en pixels
|
||
448 | * @param shearX Shearing en X
|
||
449 | * @param shearY Shearing en Y
|
||
450 | */
|
||
451 | private void createExtentsFromRMF( double originX, double originY, double pixelSizeX, double pixelSizeY, |
||
452 | double imageWidth, double imageHeight, double shearX, double shearY){ |
||
453 | |||
454 | Point2D p1 = new Point2D.Double(originX, originY); |
||
455 | Point2D p2 = new Point2D.Double(originX + shearX * imageHeight, originY + pixelSizeY * imageHeight); |
||
456 | Point2D p3 = new Point2D.Double(originX + pixelSizeX * imageWidth, originY + shearY * imageWidth); |
||
457 | Point2D p4 = new Point2D.Double(originX + pixelSizeX * imageWidth + shearX * imageHeight, originY + pixelSizeY * imageHeight + shearY * imageWidth); |
||
458 | |||
459 | double minX = Math.min(Math.min(p1.getX(), p2.getX()), Math.min(p3.getX(), p4.getX())); |
||
460 | double minY = Math.min(Math.min(p1.getY(), p2.getY()), Math.min(p3.getY(), p4.getY())); |
||
461 | double maxX = Math.max(Math.max(p1.getX(), p2.getX()), Math.max(p3.getX(), p4.getX())); |
||
462 | double maxY = Math.max(Math.max(p1.getY(), p2.getY()), Math.max(p3.getY(), p4.getY())); |
||
463 | extent = new Extent(minX, minY, maxX, maxY);
|
||
464 | requestExtent = new Extent(originX, originY, originX + (pixelSizeX * imageWidth), originY + (pixelSizeY * imageHeight));
|
||
465 | } |
||
466 | |||
467 | /**
|
||
468 | 5175 | nacho | * Calcula la transformaci?n que se produce sobre la vista cuando la imagen tiene un fichero .rmf
|
469 | * asociado. Esta transformaci?n tiene diferencias entre los distintos formatos por lo que debe calcularla
|
||
470 | * el driver correspondiente.
|
||
471 | * @param originX Origen de la imagen en la coordenada X
|
||
472 | * @param originY Origen de la imagen en la coordenada Y
|
||
473 | */
|
||
474 | abstract public void setExtentTransform(double originX, double originY, double w, double h, double psX, double psY); |
||
475 | 5140 | nacho | |
476 | 125 | luisw | public static PxContour getContour(String fName, String name, IProjection proj) { |
477 | 2 | luisw | PxContour contour = null;
|
478 | return contour;
|
||
479 | } |
||
480 | 5175 | nacho | |
481 | 2809 | nacho | /**
|
482 | * Obtiene el ancho de la imagen
|
||
483 | * @return Ancho de la imagen
|
||
484 | */
|
||
485 | 130 | luisw | abstract public int getWidth(); |
486 | 2809 | nacho | |
487 | /**
|
||
488 | * Obtiene el ancho de la imagen
|
||
489 | * @return Ancho de la imagen
|
||
490 | */
|
||
491 | 130 | luisw | abstract public int getHeight(); |
492 | 2 | luisw | |
493 | 2809 | nacho | /**
|
494 | * Reproyecci?n.
|
||
495 | * @param rp Coordenadas de la transformaci?n
|
||
496 | */
|
||
497 | 94 | luisw | abstract public void reProject(ICoordTrans rp); |
498 | 2 | luisw | |
499 | 2809 | nacho | /**
|
500 | * Asigna un nuevo Extent
|
||
501 | * @param e Extent
|
||
502 | */
|
||
503 | 2 | luisw | abstract public void setView(Extent e); |
504 | 2809 | nacho | |
505 | /**
|
||
506 | * Obtiene el extent asignado
|
||
507 | * @return Extent
|
||
508 | */
|
||
509 | 2 | luisw | abstract public Extent getView(); |
510 | |||
511 | 2809 | nacho | public void setTransparency(boolean t) { |
512 | doTransparency = t; |
||
513 | tFilter = new PixelFilter(255); |
||
514 | } |
||
515 | 2 | luisw | |
516 | 2809 | nacho | /**
|
517 | * Asigna un valor de transparencia
|
||
518 | * @param t Valor de transparencia
|
||
519 | */
|
||
520 | public void setTransparency(int t ) { |
||
521 | doTransparency = true;
|
||
522 | tFilter = new SimplePixelFilter(255 - t); |
||
523 | } |
||
524 | |||
525 | public boolean getTransparency() { return doTransparency; } |
||
526 | |||
527 | public void setAlpha(int alpha) { |
||
528 | if (!doTransparency) setTransparency(255 - alpha); |
||
529 | else tFilter.setAlpha(alpha);
|
||
530 | } |
||
531 | public int getAlpha() { |
||
532 | if (tFilter == null) |
||
533 | return 255; |
||
534 | return tFilter.getAlpha();
|
||
535 | } |
||
536 | |||
537 | 130 | luisw | public void setUpdatable(Component c) { updatable = c; } |
538 | |||
539 | 2809 | nacho | /**
|
540 | * Actualiza la imagen
|
||
541 | * @param width ancho
|
||
542 | * @param height alto
|
||
543 | * @param rp Reproyecci?n
|
||
544 | * @return img
|
||
545 | */
|
||
546 | 94 | luisw | abstract public Image updateImage(int width, int height, ICoordTrans rp); |
547 | 2809 | nacho | |
548 | /**
|
||
549 | * Obtiene el valor del raster en la coordenada que se le pasa.
|
||
550 | * El valor ser? Double, Int, Byte, etc. dependiendo del tipo de
|
||
551 | * raster.
|
||
552 | * @param x coordenada X
|
||
553 | * @param y coordenada Y
|
||
554 | * @return
|
||
555 | */
|
||
556 | abstract public Object getData(int x, int y, int band); |
||
557 | |||
558 | /**
|
||
559 | * Actualiza la/s banda/s especificadas en la imagen.
|
||
560 | * @param width ancho
|
||
561 | * @param height alto
|
||
562 | * @param rp reproyecci?n
|
||
563 | * @param img imagen
|
||
564 | * @param flags que bandas [ RED_BAND | GREEN_BAND | BLUE_BAND ]
|
||
565 | * @return img
|
||
566 | 4998 | nacho | * @throws SupersamplingNotSupportedException
|
567 | 2809 | nacho | */
|
568 | 4998 | nacho | abstract public Image updateImage(int width, int height, ICoordTrans rp, Image img, int origBand, int destBand)throws SupersamplingNotSupportedException; |
569 | 2809 | nacho | |
570 | public int getBandCount() { return bandCount; } |
||
571 | 96 | luisw | |
572 | 2809 | nacho | /**
|
573 | * Asocia un colorBand al rojo, verde o azul.
|
||
574 | * @param flag cual (o cuales) de las bandas.
|
||
575 | * @param nBand que colorBand
|
||
576 | */
|
||
577 | |||
578 | public void setBand(int flag, int bandNr) { |
||
579 | if ((flag & GeoRasterFile.RED_BAND) == GeoRasterFile.RED_BAND) rBandNr = bandNr;
|
||
580 | if ((flag & GeoRasterFile.GREEN_BAND) == GeoRasterFile.GREEN_BAND) gBandNr = bandNr;
|
||
581 | if ((flag & GeoRasterFile.BLUE_BAND) == GeoRasterFile.BLUE_BAND) bBandNr = bandNr;
|
||
582 | } |
||
583 | |||
584 | /**
|
||
585 | * Devuelve el colorBand activo en la banda especificada.
|
||
586 | * @param flag banda.
|
||
587 | */
|
||
588 | |||
589 | public int getBand(int flag) { |
||
590 | if (flag == GeoRasterFile.RED_BAND) return rBandNr; |
||
591 | if (flag == GeoRasterFile.GREEN_BAND) return gBandNr; |
||
592 | if (flag == GeoRasterFile.BLUE_BAND) return bBandNr; |
||
593 | return -1; |
||
594 | } |
||
595 | |||
596 | /**
|
||
597 | * @return Returns the dataType.
|
||
598 | */
|
||
599 | public int getDataType() { |
||
600 | return dataType;
|
||
601 | } |
||
602 | |||
603 | /**
|
||
604 | * @param dataType The dataType to set.
|
||
605 | */
|
||
606 | public void setDataType(int dataType) { |
||
607 | this.dataType = dataType;
|
||
608 | } |
||
609 | |||
610 | 96 | luisw | public IObjList getObjects() {
|
611 | // TODO hay que a?adir el raster a la lista de objetos
|
||
612 | IObjList oList = new PxObjList(proj);
|
||
613 | return oList;
|
||
614 | } |
||
615 | 2809 | nacho | |
616 | /**
|
||
617 | * Calcula los par?metros de un worl file a partir de las esquinas del raster.
|
||
618 | * 1. X pixel size A
|
||
619 | * 2. X rotation term D
|
||
620 | * 3. Y rotation term B
|
||
621 | * 4. Y pixel size E
|
||
622 | * 5. X coordinate of upper left corner C
|
||
623 | * 6. Y coordinate of upper left corner F
|
||
624 | * where the real-world coordinates x',y' can be calculated from
|
||
625 | * the image coordinates x,y with the equations
|
||
626 | * x' = Ax + By + C and y' = Dx + Ey + F.
|
||
627 | * The signs of the first 4 parameters depend on the orientation
|
||
628 | * of the image. In the usual case where north is more or less
|
||
629 | * at the top of the image, the X pixel size will be positive
|
||
630 | * and the Y pixel size will be negative. For a south-up image,
|
||
631 | * these signs would be reversed.
|
||
632 | *
|
||
633 | * You can calculate the World file parameters yourself based
|
||
634 | * on the corner coordinates. The X and Y pixel sizes can be
|
||
635 | * determined simply by dividing the distance between two
|
||
636 | * adjacent corners by the number of columns or rows in the image.
|
||
637 | * The rotation terms are calculated with these equations:
|
||
638 | *
|
||
639 | * # B = (A * number_of_columns + C - lower_right_x') / number_of_rows * -1
|
||
640 | * # D = (E * number_of_rows + F - lower_right_y') / number_of_columns * -1
|
||
641 | *
|
||
642 | * @param corner (tl, tr, br, bl)
|
||
643 | * @return
|
||
644 | */
|
||
645 | public static double [] cornersToWorldFile(Point2D [] esq, Dimension size) { |
||
646 | double a=0,b=0,c=0,d=0,e=0,f=0; |
||
647 | double x1 = esq[0].getX(), y1 = esq[0].getY(); |
||
648 | double x2 = esq[1].getX(), y2 = esq[1].getY(); |
||
649 | double x3 = esq[2].getX(), y3 = esq[2].getY(); |
||
650 | double x4 = esq[3].getX(), y4 = esq[3].getY(); |
||
651 | // A: X-scale
|
||
652 | a = Math.abs( Math.sqrt( (x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)) |
||
653 | / size.getWidth()); |
||
654 | |||
655 | // E: negative Y-scale
|
||
656 | e = - Math.abs(Math.sqrt((x1-x4)*(x1-x4)+ |
||
657 | (y1-y4)*(y1-y4))/size.getHeight()); |
||
658 | |||
659 | // C, F: upper-left coordinates
|
||
660 | c = x1; |
||
661 | f = y1; |
||
662 | |||
663 | // B & D: rotation parameters
|
||
664 | b = (a * size.getWidth() + c - x3 ) / size.getHeight() * -1;
|
||
665 | d = (e * size.getHeight() + f - y3 ) / size.getWidth() * -1;
|
||
666 | |||
667 | double [] wf = {a,d,b,e,c,f}; |
||
668 | return wf;
|
||
669 | } |
||
670 | public static String printWF(String fName, Point2D [] esq, Dimension sz) { |
||
671 | double [] wf = GeoRasterFile.cornersToWorldFile(esq, sz); |
||
672 | System.out.println("wf para "+fName); |
||
673 | System.out.println(esq+"\n"+sz); |
||
674 | String wfData = ""; |
||
675 | for (int i=0; i<6; i++) |
||
676 | wfData += wf[i]+"\n";
|
||
677 | System.out.println(wfData);
|
||
678 | return wfData;
|
||
679 | } |
||
680 | |||
681 | public static void saveWF(String fName, String data) throws IOException { |
||
682 | FileWriter fw = new FileWriter(fName); |
||
683 | fw.write(data); |
||
684 | fw.flush(); |
||
685 | fw.close(); |
||
686 | } |
||
687 | 4965 | nacho | |
688 | /**
|
||
689 | * Cosulta si hay que verificar la relaci?n de aspecto de la imagen, es decir comprueba que el ancho/alto
|
||
690 | * pasados a updateImage coinciden con el ancho/alto solicitado en setView a la imagen
|
||
691 | * @return true si est? verificando la relaci?n de aspecto.
|
||
692 | */
|
||
693 | public boolean mustVerifySize() { |
||
694 | return verifySize;
|
||
695 | } |
||
696 | |||
697 | /**
|
||
698 | * Asigna el flag que dice si hay que verificar la relaci?n de aspecto de la imagen, es decir
|
||
699 | * comprueba que el ancho/alto pasados a updateImage coinciden con el ancho/alto solicitado
|
||
700 | * en setView a la imagen.
|
||
701 | * @return true si est? verificando la relaci?n de aspecto.
|
||
702 | */
|
||
703 | public void setMustVerifySize(boolean verifySize) { |
||
704 | this.verifySize = verifySize;
|
||
705 | } |
||
706 | |||
707 | 2809 | nacho | abstract public byte[] getWindow(int ulX, int ulY, int sizeX, int sizeY, int band); |
708 | abstract public int getBlockSize(); |
||
709 | 2849 | nacho | |
710 | 5894 | nacho | /**
|
711 | * Obtiene el objeto que contiene los metadatos. Este m?todo debe ser redefinido por los
|
||
712 | * drivers si necesitan devolver metadatos.
|
||
713 | * @return
|
||
714 | */
|
||
715 | public Metadata getMetadata(){
|
||
716 | return null; |
||
717 | } |
||
718 | 2849 | nacho | |
719 | /**
|
||
720 | * Asigna un extent temporal que puede coincidir con el de la vista. Esto es
|
||
721 | * util para cargar imagenes sin georreferenciar ya que podemos asignar el extent
|
||
722 | * que queramos para ajustarnos a una vista concreta
|
||
723 | * @param tempExtent The tempExtent to set.
|
||
724 | */
|
||
725 | 3084 | nacho | public void setExtent(Extent ext) { |
726 | this.extent = ext;
|
||
727 | 2849 | nacho | } |
728 | 6064 | nacho | |
729 | 6037 | nacho | public boolean isGeoreferenced(){ |
730 | return true; |
||
731 | } |
||
732 | 8281 | nacho | |
733 | /**
|
||
734 | * M?todo que indica si existe un fichero .rmf asociado al GeoRasterFile.
|
||
735 | * @return
|
||
736 | */
|
||
737 | public boolean rmfExists(){ |
||
738 | return this.rmfExists; |
||
739 | } |
||
740 | |||
741 | /**
|
||
742 | * Obtiene los par?metros de la transformaci?n af?n que corresponde con los elementos de
|
||
743 | * un fichero tfw.
|
||
744 | * <UL>
|
||
745 | * <LI>[1]tama?o de pixel en X</LI>
|
||
746 | * <LI>[2]rotaci?n en X</LI>
|
||
747 | * <LI>[4]rotaci?n en Y</LI>
|
||
748 | * <LI>[5]tama?o de pixel en Y</LI>
|
||
749 | * <LI>[0]origen en X</LI>
|
||
750 | * <LI>[3]origen en Y</LI>
|
||
751 | * </UL>
|
||
752 | * Este m?todo debe ser reimplementado por el driver si tiene esta informaci?n. En principio
|
||
753 | * Gdal es capaz de proporcionarla de esta forma.
|
||
754 | * @return vector de double con los elementos de la transformaci?n af?n.
|
||
755 | */
|
||
756 | public double[] getTransform(){return null;} |
||
757 | 2 | luisw | } |