root / org.gvsig.jcrs / libJCRS / src / org / gvsig / crs / ogr / CrsEPSG.java @ 38
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2006 Instituto de Desarrollo Regional and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* Instituto de Desarrollo Regional (Universidad de Castilla La-Mancha)
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* Campus Universitario s/n
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* 02071 Alabacete
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* Spain
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*
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* +34 967 599 200
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*/
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package org.gvsig.crs.ogr; |
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import java.sql.ResultSet; |
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import java.sql.SQLException; |
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import es.idr.teledeteccion.connection.EpsgConnection; |
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import es.idr.teledeteccion.connection.Query; |
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/**
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* Clase que consigue los par?metros necesarios de la base de
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* datos de la EPSG una vez escogido un CRS, y que ser?n
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* los que se utilicen para la generaci?n de la cadena wkt
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* correcta para generar el CRS.
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*
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* @author Jos? Luis G?mez Mart?nez (jolugomar@gmail.com)
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*
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*/
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public class CrsEPSG { |
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int epsg_code;
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boolean crs_source;
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int source_code;
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int projection_code;
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int coord_op_code;
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int datum_code;
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int ellipsoid_code, prime_meridian_code;
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String PROJCS = null; |
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String GEOGCS = null; |
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String DATUM = null; |
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String[] SPHEROID = null; |
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String[] PRIMEM = null; |
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String UNIT_A = "degree"; |
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String UNIT_B = "Meter"; |
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double unit_BValue = 1.0; |
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String PROJECTION = null; |
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//ArrayList PARAMETER = null;
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String[] param_name = null; |
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String[] param_value = null; |
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String[] AUTHORITY = null; |
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EpsgConnection connect; |
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private int coordSysCode; |
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public CrsEPSG(){
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} |
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public CrsEPSG(int code, boolean source_yn, int source_cod, int coord_op_cod, EpsgConnection conn){ |
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epsg_code = code; |
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crs_source = source_yn; |
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source_code = source_cod; |
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coord_op_code = coord_op_cod; |
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connect = conn; |
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SPHEROID = new String[3]; |
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PRIMEM = new String[2]; |
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AUTHORITY = new String[2]; |
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initialize(); |
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} |
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public void initialize(){ |
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ResultSet result;
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ResultSet result2;
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/*
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* Si es base solamente realizamos una consulta, y ya tenemos el Datum
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* (ver en caso de ser fuente que PROJCS no tiene que estar definido)
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*/
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if (crs_source){
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String sentence = "SELECT coord_ref_sys_name, datum_code, coord_sys_code " + |
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"FROM epsg_coordinatereferencesystem " +
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"WHERE coord_ref_sys_code = " + epsg_code;
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result = Query.select(sentence,connect.getConnection());
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try {
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while (result.next()){
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GEOGCS = result.getString("coord_ref_sys_name");
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datum_code = Integer.parseInt(result.getString("datum_code")); |
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coordSysCode = result.getInt("coord_sys_code");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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} |
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else{
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String sentence = "SELECT coord_ref_sys_name, coord_sys_code " + |
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"FROM epsg_coordinatereferencesystem " +
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"WHERE coord_ref_sys_code = " + epsg_code;
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result = Query.select(sentence,connect.getConnection());
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String sentence2 = "SELECT coord_ref_sys_name, datum_code " + |
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"FROM epsg_coordinatereferencesystem " +
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"WHERE coord_ref_sys_code = " + source_code;
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result2 = Query.select(sentence2,connect.getConnection());
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try {
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while (result.next()){
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PROJCS = result.getString("coord_ref_sys_name");
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coordSysCode = result.getInt("coord_sys_code");
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} |
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while (result2.next()){
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datum_code = Integer.parseInt(result2.getString("datum_code")); |
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GEOGCS = result2.getString("coord_ref_sys_name");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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} |
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/*
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* hasta aqui hemos rellenado projcs, geocs y tenemos el codigo de datum
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* vamos a obtener los c?digos del elipsoide y el prime_meridian
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*/
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String sentence = "SELECT datum_name, ellipsoid_code, prime_meridian_code " + |
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"FROM epsg_datum " +
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"WHERE datum_code = " + datum_code;
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result = Query.select(sentence,connect.getConnection());
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try {
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while (result.next()){
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DATUM = result.getString("datum_name");
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ellipsoid_code = Integer.parseInt(result.getString("ellipsoid_code")); |
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prime_meridian_code = Integer.parseInt(result.getString("prime_meridian_code")); |
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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/*
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* Ahora vamos a coger varios campos del elipsoide y operaremos con ellos, si la
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* informaci?n de los mismos no esta en las unidades de medida que utilizaremos.
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*/
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sentence = "SELECT ellipsoid_name, semi_major_axis, inv_flattening, uom_code, " +
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"semi_minor_axis, ellipsoid_shape " +
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"FROM epsg_ellipsoid " +
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"WHERE ellipsoid_code = " + ellipsoid_code;
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result = Query.select(sentence,connect.getConnection());
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SPHEROID = getEllipsoid(result); |
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sentence = "SELECT prime_meridian_name, greenwich_longitude, uom_code " +
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"FROM epsg_primemeridian " +
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"WHERE prime_meridian_code = " + prime_meridian_code;
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result = Query.select(sentence,connect.getConnection());
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PRIMEM = getPrimeMeridian(result); |
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AUTHORITY = getAuthority(epsg_code); |
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/*
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* si tiene proyecci?n porque es proyectado, la buscamos
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*/
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if (!crs_source){
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sentence = "SELECT coord_op_method_code " +
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"FROM epsg_coordoperation " +
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"WHERE coord_op_code = " + coord_op_code;
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result = Query.select(sentence,connect.getConnection());
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try {
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while (result.next()){
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projection_code = result.getInt("coord_op_method_code");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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sentence = "SELECT coord_op_method_name " +
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"FROM epsg_coordoperationmethod " +
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"WHERE coord_op_method_code = " + projection_code;
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result = Query.select(sentence,connect.getConnection());
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try {
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while (result.next()){
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PROJECTION = result.getString("coord_op_method_name");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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parameters(projection_code); |
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setUnit_B(coordSysCode); |
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} |
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/*
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* Una vez que tengo todo, hago la llamada al constructor de Epsg2wkt para pasarle los
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* parametros y realizar la cadena
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* CAMBIARLO Y PONER METODOS getXXX para todos los parametros para hacerlo mas generico
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if (crs_source){
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cadwkt = new Epsg2wkt(0);
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}
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else{
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cadwkt = new Epsg2wkt();
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}
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*/
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} |
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/**
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* Cuando recuperamos el elipsoide del CRS que hemos seleccionado,
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* buscamos sus par?metros, los pasamos a las unidades correctas
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* y devolvemos un array de string con el nombre y los valores
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* del esferoide.
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* @param result
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* @return
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*/
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private String[] getEllipsoid(ResultSet result) { |
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String[] spheroid = new String[3]; |
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double semi_major_axis = 0; |
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double semi_minor_axis = 0; |
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double inv_flattening = 0; |
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int uom_code = 0; |
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int ellipsoid_shape = 0; |
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try {
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while (result.next()){
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spheroid[0] = result.getString("ellipsoid_name"); |
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semi_major_axis = result.getDouble("semi_major_axis");
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semi_minor_axis = result.getDouble("semi_minor_axis");
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inv_flattening = result.getDouble("inv_flattening");
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uom_code = result.getInt("uom_code");
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ellipsoid_shape = result.getInt("ellipsoid_shape");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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/*
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* pasaremos a metros las unidades del semi_major_axis, semi_minor_axis
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*/
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String sentence = "SELECT factor_b, factor_c " + |
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"FROM epsg_unitofmeasure " +
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"WHERE uom_code = " + uom_code;
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ResultSet result2 = Query.select(sentence,connect.getConnection()); |
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double factor_b = 0; |
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double factor_c = 0; |
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try{
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while (result2.next()){
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factor_b = result2.getDouble("factor_b");
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factor_c = result2.getDouble("factor_c");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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if (factor_b != 0 && factor_c != 0 ){ |
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semi_major_axis = (semi_major_axis * factor_b)/ factor_c; |
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if (semi_minor_axis != 0){ |
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semi_minor_axis = (semi_minor_axis * factor_b) / factor_c; |
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} |
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} |
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/*
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* calculamos inv_flattening en caso de que sea nulo
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*/
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if (inv_flattening == 0){ |
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if (ellipsoid_shape == 0){ |
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inv_flattening = 0;
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} |
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else{
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inv_flattening = (semi_major_axis) / (semi_major_axis - semi_minor_axis); |
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} |
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} |
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spheroid[1] = ""+semi_major_axis; |
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spheroid[2] = ""+inv_flattening; |
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return spheroid;
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} |
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/**
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* Este m?todo acepta un result en el que tenemos los par?metros
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* del PrimeMeridian, se hace la conversi?n a las unidades correctas
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* y se devuelve un array de String con el nombre y los par?metros
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* pertenecientes a PrimeMeridian.
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* @param result
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* @return
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*/
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private String[] getPrimeMeridian(ResultSet result) { |
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String[] primem = new String[2]; |
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double greenwich_longitude = 0; |
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try {
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while (result.next()){
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primem[0] = result.getString("prime_meridian_name"); |
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greenwich_longitude = result.getDouble("greenwich_longitude");
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int co= Integer.parseInt((String)result.getString("uom_code")); |
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/*
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* Realizamos este cambio de meridiano origen de la unidad de la epsg
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* a degrees, para insertarlo en este formato en wkt
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*/
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ResultSet result2 = null; |
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if (co != 9110){ |
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String sentence = "SELECT factor_b, factor_c " + |
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"FROM epsg_unitofmeasure " +
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"WHERE uom_code = " + co;
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result2 = Query.select(sentence,connect.getConnection());
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while(result.next()){
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greenwich_longitude = ((greenwich_longitude * result2.getDouble("factor_b") )/ result2.getDouble("factor_c")) * (180.0 / Math.PI); |
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} |
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} else {
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greenwich_longitude = Dms2Deg(greenwich_longitude); |
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} |
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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primem[1] = ""+greenwich_longitude; |
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return primem;
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} |
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/**
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* M?todo para bucar los par?metros de la proyecci?n que
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* se est? utilizando. Se rellenan las variables param_name y
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* param_value con los datos de la proyecci?n utilizada.
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* @param proj
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*/
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private void parameters(int proj) { |
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/*
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* para la consecucion de los parametros se tiene que ir buscando dependiendo de la
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* proyeccion que se utilice, hay que ver que parametros exactos tiene cada uno de ellos
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* y si hay mas de 17, que son los que se utilizan en WKT, como vamos a tratarlos, mensaje
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* de error, intentar no mostrarlos, o simplemente pasar de ellos
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*/
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ResultSet result;
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ResultSet result2;
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ResultSet result3;
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/*
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* Conseguimos la lista de parametros y valores, ordenados segun sort_order de manera
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* ascendente por lo que coincidiram siempre param_name[i] y param_value[i]
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*/
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String sentence = "SELECT COUNT(*) " + |
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"FROM epsg_coordoperationparamusage " +
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"WHERE coord_op_method_code = " + proj;
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result = Query.select(sentence,connect.getConnection());
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int count = 0; |
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try {
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result.next(); |
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count = result.getInt(1);
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} catch (SQLException e1) { |
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e1.printStackTrace(); |
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} |
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param_name = new String[count]; |
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param_value = new String[count]; |
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sentence = "SELECT parameter_code " +
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"FROM epsg_coordoperationparamusage " +
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"WHERE coord_op_method_code = " + proj + " " + |
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"ORDER BY sort_order ASC";
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result = Query.select(sentence,connect.getConnection());
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int i = 0; |
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try {
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while (result.next()) {
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int cod = result.getInt("parameter_code"); |
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/*
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* con el codigo del parametro, obtenemos tanto su nombre como su valor
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*/
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sentence = "SELECT parameter_name " +
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"FROM epsg_coordoperationparam " +
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"WHERE parameter_code = " + cod;
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result2 = Query.select(sentence,connect.getConnection());
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result2.next(); |
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param_name[i] = result2.getString("parameter_name");
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sentence = "SELECT parameter_value, uom_code " +
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"FROM epsg_coordoperationparamvalue " +
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"WHERE parameter_code = " + cod + " AND coord_op_code = " + coord_op_code; |
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result3 = Query.select(sentence,connect.getConnection());
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result3.next(); |
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double param_val = result3.getDouble("parameter_value"); |
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int uom_code = result3.getInt("uom_code"); |
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sentence = "SELECT factor_b, factor_c, unit_of_meas_type " +
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"FROM epsg_unitofmeasure " +
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"WHERE uom_code = " + uom_code;
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ResultSet result4 = Query.select(sentence,connect.getConnection()); |
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double factor_b = 0; |
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double factor_c = 0; |
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result4.next(); |
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String type = result4.getString("unit_of_meas_type"); |
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factor_b = result4.getDouble("factor_b");
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factor_c = result4.getDouble("factor_c");
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if (factor_b != 0 && factor_c != 0 && !type.equals("angle")){ |
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param_val = (param_val * factor_b) / factor_c; |
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} |
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else if(factor_b != 0 && factor_c != 0 && type.equals("angle")){ |
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param_val = ((param_val * factor_b) / factor_c) * (180.0 / Math.PI);; |
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}else if (uom_code == 9110){ |
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param_val = especialDegree(param_val); |
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param_val = Math.toDegrees(param_val);
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}else {
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System.out.println("C?digo de medida no v?lido..."); |
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} |
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param_value[i] = ""+param_val;
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i++; |
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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} |
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/**
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* M?todo para pasar a las unidades correctas el valor de los distintos
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* par?metros de la proyecci?n.
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* @param val
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* @return
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*/
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private double especialDegree(double val){ |
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if(val==0) |
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return val;
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int signo = 1; |
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if (val < 0){ |
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signo = -1;
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val = Math.abs(val);
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} |
| 459 |
String strValue=String.valueOf(val); |
| 460 |
int posPto=strValue.indexOf('.'); |
| 461 |
double grad=Double.parseDouble(strValue.substring(0,posPto)); |
| 462 |
String strFraction=strValue.substring(posPto+1); |
| 463 |
double min=0; |
| 464 |
double sec=0; |
| 465 |
if(strFraction.length()==1) |
| 466 |
{
|
| 467 |
min=Double.parseDouble(strFraction);
|
| 468 |
min*=10;
|
| 469 |
} |
| 470 |
if(strFraction.length()==2) |
| 471 |
{
|
| 472 |
min=Double.parseDouble(strFraction);
|
| 473 |
} |
| 474 |
if(strFraction.length()>2) |
| 475 |
{
|
| 476 |
min=Double.parseDouble(strFraction.substring(0,2)); |
| 477 |
sec=Double.parseDouble(strFraction.substring(2)); |
| 478 |
if(strFraction.length()==3) |
| 479 |
sec*=10;
|
| 480 |
if(strFraction.length()>4){ |
| 481 |
for(int i=0;i<strFraction.length()-4;i++) |
| 482 |
sec=sec/10.0;
|
| 483 |
} |
| 484 |
|
| 485 |
} |
| 486 |
|
| 487 |
val = ((grad + (min/60.0) + (sec/3600.0)) * (Math.PI/180.0)) * signo; |
| 488 |
|
| 489 |
return val;
|
| 490 |
} |
| 491 |
|
| 492 |
/**
|
| 493 |
* M?todo para pasar a las unidades correctas el valor del prime meridian.
|
| 494 |
* @param val
|
| 495 |
* @return
|
| 496 |
*/
|
| 497 |
private double Dms2Deg(double val){ |
| 498 |
if(val==0) |
| 499 |
return val;
|
| 500 |
int signo = 1; |
| 501 |
if (val < 0){ |
| 502 |
signo = -1;
|
| 503 |
val = Math.abs(val);
|
| 504 |
} |
| 505 |
String strValue=String.valueOf(val); |
| 506 |
int posPto=strValue.indexOf('.'); |
| 507 |
double grad=Double.parseDouble(strValue.substring(0,posPto)); |
| 508 |
String strFraction=strValue.substring(posPto+1); |
| 509 |
double min=0; |
| 510 |
double sec=0; |
| 511 |
if(strFraction.length()==1) |
| 512 |
{
|
| 513 |
min=Double.parseDouble(strFraction);
|
| 514 |
min*=10;
|
| 515 |
} |
| 516 |
if(strFraction.length()==2) |
| 517 |
{
|
| 518 |
min=Double.parseDouble(strFraction);
|
| 519 |
} |
| 520 |
if(strFraction.length()>2) |
| 521 |
{
|
| 522 |
min=Double.parseDouble(strFraction.substring(0,2)); |
| 523 |
sec=Double.parseDouble(strFraction.substring(2)); |
| 524 |
if(strFraction.length()==3) |
| 525 |
sec*=10;
|
| 526 |
if(strFraction.length()>4){ |
| 527 |
for(int i=0;i<strFraction.length()-4;i++) |
| 528 |
sec=sec/10.0;
|
| 529 |
} |
| 530 |
|
| 531 |
} |
| 532 |
|
| 533 |
val = ((grad + (min/60.0) + (sec/3600.0)) ) * signo; |
| 534 |
|
| 535 |
return val;
|
| 536 |
} |
| 537 |
|
| 538 |
/**
|
| 539 |
* Genera el authority del CRS
|
| 540 |
* @param epsg_cod
|
| 541 |
* @return
|
| 542 |
*/
|
| 543 |
private String[] getAuthority(int epsg_cod) { |
| 544 |
String[] aut = new String[2]; |
| 545 |
aut[0] = "EPSG"; |
| 546 |
aut[1] = ""+epsg_cod; |
| 547 |
return aut;
|
| 548 |
} |
| 549 |
|
| 550 |
public String getPROJCS(){ |
| 551 |
return PROJCS;
|
| 552 |
} |
| 553 |
|
| 554 |
public String getGEOGCS(){ |
| 555 |
return GEOGCS;
|
| 556 |
} |
| 557 |
|
| 558 |
public String getDATUM(){ |
| 559 |
return DATUM;
|
| 560 |
} |
| 561 |
|
| 562 |
public String[] getSPHEROID(){ |
| 563 |
return SPHEROID;
|
| 564 |
} |
| 565 |
|
| 566 |
public String[] getPRIMEM(){ |
| 567 |
return PRIMEM;
|
| 568 |
} |
| 569 |
|
| 570 |
public void setUnit_B(int code) { |
| 571 |
int uom = 0; |
| 572 |
String sentence = "SELECT uom_code " + |
| 573 |
"FROM epsg_coordinateaxis " +
|
| 574 |
"WHERE coord_sys_code = " + code;
|
| 575 |
|
| 576 |
ResultSet result = Query.select(sentence,connect.getConnection()); |
| 577 |
/**
|
| 578 |
* Recuperar el nombre de la unidad para poder ponerlo en la cadena
|
| 579 |
* wkt
|
| 580 |
*/
|
| 581 |
try {
|
| 582 |
if (result.next()) {
|
| 583 |
uom = result.getInt("uom_code");
|
| 584 |
} |
| 585 |
} catch (SQLException e) { |
| 586 |
// TODO Auto-generated catch block
|
| 587 |
e.printStackTrace(); |
| 588 |
} |
| 589 |
|
| 590 |
sentence = "SELECT unit_of_meas_name " +
|
| 591 |
"FROM epsg_unitofmeasure " +
|
| 592 |
"WHERE uom_code = " + uom;
|
| 593 |
|
| 594 |
result = Query.select(sentence,connect.getConnection());
|
| 595 |
|
| 596 |
try {
|
| 597 |
if (result.next()) {
|
| 598 |
UNIT_B = result.getString("unit_of_meas_name");
|
| 599 |
} |
| 600 |
} catch (SQLException e) { |
| 601 |
// TODO Auto-generated catch block
|
| 602 |
e.printStackTrace(); |
| 603 |
} |
| 604 |
setUnit_BValue(uom); |
| 605 |
} |
| 606 |
|
| 607 |
private void setUnit_BValue(int uom) { |
| 608 |
if (uom != 9001) { |
| 609 |
double factor_b =0.0; |
| 610 |
double factor_c = 0.0; |
| 611 |
String sentence = "SELECT factor_b, factor_c " + |
| 612 |
"FROM epsg_unitofmeasure " +
|
| 613 |
"WHERE uom_code = " + uom;
|
| 614 |
|
| 615 |
ResultSet result = Query.select(sentence,connect.getConnection()); |
| 616 |
try {
|
| 617 |
if (result.next()) {
|
| 618 |
factor_b = result.getDouble("factor_b");
|
| 619 |
factor_c = result.getDouble("factor_c");
|
| 620 |
} |
| 621 |
} catch (SQLException e) { |
| 622 |
// TODO Auto-generated catch block
|
| 623 |
e.printStackTrace(); |
| 624 |
} |
| 625 |
unit_BValue = (unit_BValue * factor_b) / factor_c; |
| 626 |
if (uom != 9002) { |
| 627 |
UNIT_B = "[m*"+unit_BValue+"]"; |
| 628 |
} else
|
| 629 |
UNIT_B = "ft";
|
| 630 |
} |
| 631 |
} |
| 632 |
|
| 633 |
public String getUNIT_A(){ |
| 634 |
return UNIT_A;
|
| 635 |
} |
| 636 |
|
| 637 |
public String getPROJECTION(){ |
| 638 |
return PROJECTION;
|
| 639 |
} |
| 640 |
|
| 641 |
public String[] getParam_name(){ |
| 642 |
return param_name;
|
| 643 |
} |
| 644 |
|
| 645 |
public String[] getParam_value(){ |
| 646 |
return param_value;
|
| 647 |
} |
| 648 |
|
| 649 |
public String getUNIT_B(){ |
| 650 |
return UNIT_B;
|
| 651 |
} |
| 652 |
|
| 653 |
public String getUnit_BValue() { |
| 654 |
return ""+unit_BValue; |
| 655 |
} |
| 656 |
|
| 657 |
public String[] getAUTHORITY(){ |
| 658 |
return AUTHORITY;
|
| 659 |
} |
| 660 |
} |