root / org.gvsig.jcrs / libJCRS / src / org / gvsig / crs / CrsGT.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; |
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import java.awt.Color; |
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import java.awt.Graphics2D; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import org.cresques.cts.ICoordTrans; |
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import org.cresques.cts.IDatum; |
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import org.cresques.cts.IProjection; |
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import org.cresques.geo.ViewPortData; |
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import org.geotools.referencing.crs.AbstractDerivedCRS; |
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import org.geotools.referencing.crs.AbstractSingleCRS; |
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import org.geotools.referencing.datum.DefaultGeodeticDatum; |
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import org.opengis.referencing.crs.CoordinateReferenceSystem; |
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import org.gvsig.crs.proj.CrsProj; |
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import org.gvsig.crs.proj.CrsProjException; |
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import org.gvsig.crs.proj.JNIBaseCrs; |
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import org.gvsig.crs.proj.OperationCrsException; |
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import org.gvsig.fmap.crs.CRSFactory; |
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/**
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* Clase que representa un CRS basado en GeoTools/GeoApi.
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*
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* @author Diego Guerrero Sevilla (diego.guerrero@uclm.es)
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*
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*/
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public class CrsGT implements ICrs { |
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private static final Color basicGridColor = new Color(64, 64, 64, 128); |
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/**
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* CRS GeoApi. Nucleo de la clare CrsGT.
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*/
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private CoordinateReferenceSystem crsGT = null; |
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/**
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*Cadena proj4
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*/
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private String proj4String = null; |
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private Color gridColor = basicGridColor; |
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/**
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* Par?metros de transformaci?n para el CRS fuente en formato proj4.
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*/
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private String sourceTrParams = null; |
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/**
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* Par?metros de transformaci?n para el CRS destino en formato proj4.
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*/
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private String targetTrParams = null; |
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/**
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* CRS operable con proj4.
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*/
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private CrsProj crsProj = null; |
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/**
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* CRS Base operable con proj4.
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*/
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private CrsProj crsProjBase = null; |
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/**
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* Provisional, hasta que se elimine getCrsWkt de ICrs.
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*/
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private CrsWkt crsWkt = null; |
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/**
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* Conversor de CRSs a cadenas proj4.
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*/
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private Proj4 proj4 = null; |
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/**
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* Constructor a partir de un CoordinateReferenceSystem
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*
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* @param crsGT
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* @throws CrsProjException
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*/
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public CrsGT(CoordinateReferenceSystem crsGT){
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this.crsGT = crsGT;
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} |
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public int getCode() { |
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return Integer.valueOf(getAbrev().split(":")[1]).intValue(); |
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} |
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public CrsWkt getCrsWkt() {
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if (crsWkt==null) |
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crsWkt = new CrsWkt(crsGT);
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return crsWkt;
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} |
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public String getWKT() { |
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return crsGT.toWKT();
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} |
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public void setTransformationParams(String SourceParams, String TargetParams) { |
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this.sourceTrParams = SourceParams;
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this.targetTrParams = TargetParams;
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} |
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/**
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* Devuelve los parametros de la transformacion del crs fuente
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* @return
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*/
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public String getSourceTransformationParams() { |
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return this.sourceTrParams; |
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} |
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/**
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* Devuelve los parametros de la transformacion del crs destino
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* @return
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*/
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public String getTargetTransformationParams() { |
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return this.targetTrParams; |
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} |
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public Point2D createPoint(double x, double y) { |
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return new Point2D.Double(x,y); |
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} |
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public void drawGrid(Graphics2D g, ViewPortData vp) { |
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// TODO Auto-generated method stub
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} |
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public Point2D fromGeo(Point2D gPt, Point2D mPt) { |
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// TODO Auto-generated method stub
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return null; |
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} |
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public String getAbrev() { |
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return ((AbstractSingleCRS)crsGT).getIdentifiers().iterator().next().toString();
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} |
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public ICoordTrans getCT(IProjection dest) {
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try {
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if (dest == this) |
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return null; |
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COperation operation = null;
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if(((ICrs)dest).getSourceTransformationParams() != null || ((ICrs)dest).getTargetTransformationParams() != null) |
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operation = new COperation(this, (ICrs)dest,((ICrs)dest).getTargetTransformationParams(),((ICrs)dest).getSourceTransformationParams()); |
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else
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operation = new COperation(this, (ICrs)dest,sourceTrParams,targetTrParams); |
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return operation;
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}catch (CrsException e) {
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throw new RuntimeException(e); |
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} |
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/*
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try {
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operation = new COperation(this, (ICrs)dest);
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} catch (CrsException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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if (!getTransformationParams().equals("")){
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if (isParamsInTarget())
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operation.setParamsCrsProj(new CrsProj(crsDest.getProj4String()+getTransformationParams()), true);
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else
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operation.setParamsCrsProj(new CrsProj(getProj4String()+getTransformationParams()), false);
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return operation;
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}
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return operation; */
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} |
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public IDatum getDatum() {
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DefaultGeodeticDatum datumGT = (DefaultGeodeticDatum)((AbstractSingleCRS)crsGT).getDatum(); |
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CRSDatum datum = new CRSDatum(datumGT.getEllipsoid().getSemiMajorAxis(),datumGT.getEllipsoid().getInverseFlattening());
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return datum;
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} |
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public Color getGridColor() { |
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return gridColor;
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} |
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public double getScale(double minX, double maxX, double width, double dpi) { |
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double scale = 0D; |
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//Esto ahora se hace fuera
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// if (!isProjected()) { // Es geogr?fico; calcula la escala.
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// scale = ((maxX - minX) * // grados
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//
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// // 1852.0 metros x minuto de meridiano
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// (dpi / 2.54 * 100.0 * 1852.0 * 60.0)) / // px / metro
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// width; // pixels
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// }
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// else{
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scale = ((maxX - minX) * // metros
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(dpi / 2.54 * 100.0)) / // px / metro |
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width; // pixels
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// }
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return scale;
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} |
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public double getScale(double minX, double maxX, double minY, double maxY, double width, double dpi) { |
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double scale = 0D; |
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double incX = (maxX-minX);
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if (!isProjected()) {
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double a = getDatum().getESemiMajorAxis();
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double invF = getDatum().getEIFlattening();
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double meanY = (minY+maxY)/2.0; |
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double radius = 0.0; |
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if (invF == Double.POSITIVE_INFINITY){ |
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radius = a; |
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} |
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else{
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double e2 = 2.0/invF-Math.pow(1.0/invF,2.0); |
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radius = a/Math.sqrt(1.0-e2*Math.pow(Math.sin(meanY*Math.PI/180.0),2.0))*Math.cos(meanY*Math.PI/180.0); |
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} |
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incX *= Math.PI/180.0*radius; |
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} |
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scale = (incX * // metros
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(dpi / 2.54 * 100.0)) / // px / metro |
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width; // pixels
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return scale;
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} |
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public boolean isProjected() { |
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if (crsGT instanceof AbstractDerivedCRS){ |
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return true; |
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}else
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return false; |
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} |
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public void setGridColor(Color c) { |
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gridColor = c; |
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} |
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public Point2D toGeo(Point2D pt) { |
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if (isProjected()){
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double x[] = {pt.getX()}; |
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double y[] = {pt.getY()}; |
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double z[] = {0D}; |
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try {
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JNIBaseCrs.operate( x , y, z, |
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getCrsProj(),getCrsProjBase()); |
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} catch (OperationCrsException e) {
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throw new RuntimeException(e); |
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} |
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return new Point2D.Double(x[0],y[0]); |
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} |
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else
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return pt;
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} |
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/**
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* @param targetParam
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*/
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/*public void setParamsInTarget(boolean targetParam) {
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this.paramsInTarget = targetParam;
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}*/
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/**
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*
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* @return Cadena proj4 Correspondiente al CRS.
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* @throws CrsException
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*/
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public String getProj4String() throws CrsException { |
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if (proj4String == null) |
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proj4String = getProj4().exportToProj4(crsGT); |
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return proj4String;
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} |
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public CoordinateReferenceSystem getCrsGT() {
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return crsGT;
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} |
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public CrsProj getCrsProj() {
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if (crsProj == null) |
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try {
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crsProj = new CrsProj(getProj4String());
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} catch (CrsException e) {
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throw new RuntimeException(e); |
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} |
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return crsProj;
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} |
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private CrsProj getCrsProjBase() {
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if (crsProjBase == null){ |
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AbstractDerivedCRS derivedCRS = (AbstractDerivedCRS)crsGT; |
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try {
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crsProjBase = new CrsProj(getProj4().exportToProj4(derivedCRS.getBaseCRS()));
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} catch (CrsException e) {
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throw new RuntimeException(e); |
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} |
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} |
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return crsProjBase;
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} |
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private Proj4 getProj4() {
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if (proj4 == null) |
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try {
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proj4 = new Proj4();
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} catch (CrsException e) {
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throw new RuntimeException(e); |
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} |
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return proj4;
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} |
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/**
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* @return Authority:code:proj@Sourceparam@TargerParam@
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*/
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public String getFullCode() { |
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if (this.sourceTrParams == null && this.targetTrParams == null) |
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return getAbrev();
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String sourceParams = ""; |
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String targetParams = ""; |
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if (sourceTrParams != null) |
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sourceParams = sourceTrParams; |
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if (targetTrParams != null) |
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targetParams = targetTrParams; |
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return getAbrev()+":proj@"+sourceParams+"@"+targetParams; |
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} |
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public Rectangle2D getExtent(Rectangle2D extent,double scale,double wImage,double hImage,double mapUnits,double distanceUnits,double dpi) { |
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double w =0; |
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double h =0; |
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double wExtent =0; |
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double hExtent =0; |
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// if (isProjected()) {
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w = ((wImage / dpi) * 2.54);
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h = ((hImage / dpi) * 2.54);
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wExtent =w * scale / mapUnits; |
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hExtent =h * scale / mapUnits; |
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//En las no proyectadas, ahora viene el calculo hecho
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//al haber incluido los grados en el array DISTANCETRANS2METER del MapContext
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// }else {
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// w = ((wImage / dpi) * 2.54);
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// h = ((hImage / dpi) * 2.54);
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// wExtent =(w*scale*distanceUnits)/ (mapUnits*1852.0*60.0);
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// hExtent =(h*scale*distanceUnits)/ (mapUnits*1852.0*60.0);
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// }
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double xExtent = extent.getCenterX() - wExtent/2; |
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double yExtent = extent.getCenterY() - hExtent/2; |
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Rectangle2D rec=new Rectangle2D.Double(xExtent,yExtent,wExtent,hExtent); |
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return rec;
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} |
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public Object clone() throws CloneNotSupportedException { |
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return CRSFactory.getCRS( this.getFullCode() ); |
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} |
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} |