svn-gvsig-desktop / trunk / libraries / libRaster / src / org / gvsig / raster / util / WktUtils.java @ 12522
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| 1 | 12494 | 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.util; |
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| 20 | |||
| 21 | /**
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| 22 | * Clase que genera c?digos EPSG a partir de cadenas Wkt.
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| 23 | * @author Miguel ?ngel Querol Carratal? <miguelangel.querol@iver.es>
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| 24 | *
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| 25 | */
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| 26 | public class WktUtils { |
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| 27 | |||
| 28 | private String wkt = null; |
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| 29 | private String datum = null; |
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| 30 | private String proj = null; |
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| 31 | private String zone = null; |
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| 32 | private String hemi = null; |
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| 33 | |||
| 34 | |||
| 35 | public WktUtils(String wkt){ |
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| 36 | super();
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| 37 | this.wkt = wkt;
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| 38 | parseWkt(); |
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| 39 | normalize(); |
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| 40 | } |
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| 41 | |||
| 42 | |||
| 43 | /**
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| 44 | * Devuerlve un string con c?digo EPSG correspondiente a la proyecci?n indicada por
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| 45 | * la cadena Wkt pasada como par?metro.
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| 46 | * @param wkt
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| 47 | * @return
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| 48 | */
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| 49 | public String getEPSG(){ |
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| 50 | String epsg = null; |
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| 51 | |||
| 52 | if((datum.toLowerCase().equals("unknown")) || (proj.toLowerCase().equals("unknown"))) |
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| 53 | if((zone.equals("unknown")) || (hemi.equals("unknown"))){ |
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| 54 | epsg = "unknown";
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| 55 | return epsg;
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| 56 | } |
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| 57 | |||
| 58 | if ((datum.equals("WGS 84")) || (datum.equals("WGS_1948")) || (datum.equals("WGS84"))){ |
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| 59 | if (proj.equals("geo")){ |
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| 60 | epsg = "4326";
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| 61 | }else if (proj.equals("utm")){ |
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| 62 | if ((hemi.equals("N"))) epsg = "326"; |
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| 63 | if (hemi.equals("S")) epsg = "327"; |
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| 64 | if ((Integer.valueOf(zone)).intValue() <= 9) |
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| 65 | epsg = epsg + "0" + zone;
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| 66 | else
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| 67 | epsg = epsg + zone; |
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| 68 | }else if (proj.equals("LCC Canada")){ |
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| 69 | epsg = "42101";
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| 70 | } |
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| 71 | }else if(datum.equals("ED50")){ |
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| 72 | if (proj.equals("geo")){ |
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| 73 | epsg = "4230";
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| 74 | }else if(proj.equals("utm")){ |
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| 75 | epsg = "230";
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| 76 | if ((Integer.valueOf(zone)).intValue() <= 9) |
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| 77 | epsg = epsg + "0" + zone;
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| 78 | else
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| 79 | epsg = epsg + zone; |
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| 80 | } |
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| 81 | }else if((datum.equals("Datum 73")) || (datum.equals("datum 73")) || (datum.equals("datum_73"))){ |
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| 82 | if (proj.equals("geo")){ |
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| 83 | epsg = "4274";
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| 84 | }else if (proj.equals("Modified Portuguese Grid")){ |
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| 85 | epsg = "27492";
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| 86 | } |
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| 87 | }else if(datum.equals("NAD27")){ |
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| 88 | if(proj.equals("geo")){ |
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| 89 | epsg = "4267";
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| 90 | }else if(proj.equals("utm")){ |
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| 91 | epsg = "267";
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| 92 | if ((Integer.valueOf(zone)).intValue() <= 9) |
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| 93 | epsg = epsg + "0" + zone;
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| 94 | else
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| 95 | epsg = epsg + zone; |
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| 96 | } |
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| 97 | }else if (datum.equals("NAD83")){ |
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| 98 | if(proj.equals("geo")){ |
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| 99 | epsg = "4269";
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| 100 | }else if(proj.equals("utm")){ |
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| 101 | epsg = "269";
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| 102 | if ((Integer.valueOf(zone)).intValue() <= 9) |
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| 103 | epsg = epsg + "0" + zone;
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| 104 | else
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| 105 | epsg = epsg + zone; |
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| 106 | }else if(proj.equals("LCC Canada")){ |
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| 107 | epsg = "42304";
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| 108 | } |
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| 109 | }else if ((datum.equals("La canoa")) || datum.equals("la canoa") || datum.equals("La Canoa") || datum.equals("La_canoa")){ |
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| 110 | if(proj.equals("geo")){ |
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| 111 | epsg = "4247";
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| 112 | }else if (proj.equals("utm")){ |
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| 113 | epsg = "247";
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| 114 | if (((Integer.valueOf(zone)).intValue() < 18) || ((Integer.valueOf(zone)).intValue() > 20)) |
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| 115 | epsg = "unknown";
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| 116 | else
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| 117 | epsg = epsg + zone; |
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| 118 | } |
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| 119 | }else if ((datum.equals("NTF (Paris)")) || (datum.equals("NTF")) || (datum.equals("NTF(Paris)"))){ |
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| 120 | if(proj.equals("geo")){ |
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| 121 | epsg = "4807";
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| 122 | }else if(proj.equals("France II")){ |
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| 123 | epsg = "27582";
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| 124 | } |
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| 125 | }else if ((datum.equals("ETRS89")) || (datum.equals("ETRS 89"))){ |
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| 126 | if(proj.equals("geo")){ |
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| 127 | epsg = "4258";
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| 128 | }else if(proj.equals("utm")){ |
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| 129 | epsg = "258";
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| 130 | if ((Integer.valueOf(zone)).intValue() <= 9) |
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| 131 | epsg = epsg + "0" + zone;
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| 132 | else
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| 133 | epsg = epsg + zone; |
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| 134 | } |
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| 135 | }else if ((datum.equals("Campo Inchauspe")) || datum.equals("Campo_Inchauspe")){ |
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| 136 | if(proj.equals("geo")){ |
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| 137 | epsg = "4221";
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| 138 | }else if(proj.equals("Argentina")){ |
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| 139 | epsg = "2219" + zone;
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| 140 | } |
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| 141 | }else if ((datum.equals("RGF93")) || (datum.equals("RGF 93")) || datum.equals("RGF_93")){ |
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| 142 | if(proj.equals("geo")){ |
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| 143 | epsg = "4171";
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| 144 | }else if(proj.equals("Lambert_93")){ |
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| 145 | epsg = "2154";
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| 146 | } |
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| 147 | } |
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| 148 | |||
| 149 | if (epsg == null) epsg = "unknown"; |
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| 150 | |||
| 151 | return epsg;
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| 152 | } |
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| 153 | |||
| 154 | /**
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| 155 | * Parsea una cadena WKT obteniendo de ella el datum, la proyecci?n y la zona de la imagen.
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| 156 | * Est? por probar con diferentes cadenas WKT.
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| 157 | */
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| 158 | private void parseWkt(){ |
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| 159 | String head = null; |
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| 160 | String auxProj = null; |
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| 161 | String auxDatum = null; |
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| 162 | String auxZone = null; |
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| 163 | |||
| 164 | int index = 0; |
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| 165 | int lastIndex = 0; |
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| 166 | |||
| 167 | index = wkt.indexOf("[");
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| 168 | if (index != -1) |
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| 169 | head = wkt.substring(0, index);
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| 170 | |||
| 171 | |||
| 172 | if (head.equals("GEOGCS")){ |
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| 173 | // En este caso sabemos que la proyeccion esta en geodesicas
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| 174 | index = wkt.indexOf("\"");
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| 175 | auxDatum = wkt.substring(index + 1, wkt.indexOf("\"", index + 1)); |
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| 176 | datum = auxDatum; |
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| 177 | proj = "geo";
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| 178 | |||
| 179 | System.out.println("Parseado ----->>> " + datum +" " + proj); |
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| 180 | }else if (head.equals("PROJCS")){ |
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| 181 | // Obtenemos el datum de la proyecci?n.
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| 182 | int geogcs = wkt.indexOf("GEOGCS[\""); |
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| 183 | if (geogcs != -1) |
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| 184 | geogcs = geogcs + 8;
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| 185 | int geogcsEnd = wkt.indexOf("\"", geogcs); |
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| 186 | if (geogcs != -1 && geogcsEnd != -1) |
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| 187 | auxDatum = wkt.substring(geogcs, geogcsEnd); |
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| 188 | |||
| 189 | index = wkt.indexOf("PROJCS[\"");
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| 190 | if (index != -1) |
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| 191 | index = index + 8;
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| 192 | lastIndex = wkt.indexOf("\"", index);
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| 193 | if (index != -1 && lastIndex != -1){ |
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| 194 | auxZone = wkt.substring(index, lastIndex); |
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| 195 | if ((index = auxZone.indexOf("UTM")) != -1){ |
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| 196 | this.proj = "utm"; |
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| 197 | if (((index = auxZone.indexOf("zone")) != -1) || ((index = auxZone.indexOf("Zone")) != -1 )){ |
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| 198 | String aux = null; |
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| 199 | index = index + 5;
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| 200 | aux = auxZone.substring(index); |
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| 201 | if ((aux.length() <= 4)){ |
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| 202 | if ((index = aux.indexOf("N")) != -1){ |
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| 203 | hemi = "N";
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| 204 | zone = aux.substring(0, index);
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| 205 | }else if ((index = aux.indexOf("S")) != -1){ |
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| 206 | hemi = "S";
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| 207 | zone = aux.substring(0, index);
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| 208 | }else{
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| 209 | zone = "unknown";
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| 210 | hemi = "N";
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| 211 | } |
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| 212 | }else{
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| 213 | if (((index = aux.indexOf("Northern")) != -1) || ((index = aux.indexOf("northern")) != -1)){ |
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| 214 | hemi = "N";
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| 215 | zone = aux.substring(0, index);
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| 216 | }else if (((index = aux.indexOf("Southern")) != -1) || ((index = aux.indexOf("southern")) != -1)){ |
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| 217 | hemi = "N";
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| 218 | zone = aux.substring(0, index);
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| 219 | }else{
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| 220 | zone = "unknown";
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| 221 | hemi = "N";
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| 222 | } |
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| 223 | } |
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| 224 | }else{
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| 225 | zone = "unknown";
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| 226 | hemi = "unknown";
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| 227 | } |
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| 228 | }else if((index = auxZone.indexOf("LCC Canada")) != -1 ){ |
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| 229 | this.proj = "LCC Canada"; |
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| 230 | }else if((index = auxZone.indexOf("Lambert-93")) != -1 ){ |
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| 231 | this.proj = "Lambert_93"; |
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| 232 | }else if ((index = auxZone.indexOf("Argentina")) != -1){ |
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| 233 | this.proj = "Argentina"; |
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| 234 | index = index +10;
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| 235 | zone = auxZone.substring(index); |
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| 236 | }else if ((index = auxZone.indexOf("Modified Portuguese Grid")) != -1 ){ |
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| 237 | this.proj = "Modified Portuguese Grid"; |
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| 238 | }else if ((index = auxZone.indexOf("NRCan LCC Canada")) != -1 ){ |
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| 239 | this.proj = "NRCan LCC Canada"; |
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| 240 | }else if ((index = auxZone.indexOf("France II")) != -1 ){ |
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| 241 | this.proj = "France II"; |
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| 242 | }else {
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| 243 | this.proj = "Unknown"; |
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| 244 | } |
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| 245 | |||
| 246 | datum = auxDatum; |
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| 247 | |||
| 248 | //Normalizamos la zona
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| 249 | if ((zone != null) && (!zone.equals("unknown"))){ |
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| 250 | if(zone.indexOf(" ") != -1) |
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| 251 | zone = zone.replaceAll( " ", ""); |
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| 252 | if(zone.indexOf(",") != -1) |
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| 253 | zone = zone.replaceAll(",", ""); |
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| 254 | //Comprobamos que la zona sea un valor numerico, si no lo es, lo dejamos en unknown
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| 255 | try{
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| 256 | Integer.valueOf(zone);
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| 257 | }catch (NumberFormatException e){ |
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| 258 | zone = "unknown";
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| 259 | } |
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| 260 | } |
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| 261 | |||
| 262 | |||
| 263 | |||
| 264 | }else{
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| 265 | datum = "Unknown";
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| 266 | } |
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| 267 | |||
| 268 | } |
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| 269 | |||
| 270 | //TODO: Comprobar todas las salidas que puede dar este m?todo (nulls, unknowns...)
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| 271 | } |
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| 272 | |||
| 273 | private void normalize(){ |
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| 274 | if (zone == null) zone = "unknown"; |
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| 275 | if (hemi == null) hemi = "unknown"; |
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| 276 | if (proj == null) proj = "unknown"; |
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| 277 | if (datum == null) datum = "unknown"; |
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| 278 | } |
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| 279 | |||
| 280 | public String getDatum(){ |
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| 281 | return this.datum; |
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| 282 | } |
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| 283 | |||
| 284 | public String getZone(){ |
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| 285 | return this.zone; |
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| 286 | } |
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| 287 | |||
| 288 | public String getProj(){ |
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| 289 | return this.proj; |
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| 290 | } |
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| 291 | } |