svn-gvsig-desktop / tags / Root_v061 / libraries / libCq CMS for java.old / src / org / cresques / cts / gt2 / CoordSys.java @ 4812
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/*
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* Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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*
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* Copyright (C) 2004-5.
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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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* cresques@gmail.com
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*/
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package org.cresques.cts.gt2; |
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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.cs.CoordinateSystem; |
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import org.geotools.cs.CoordinateSystemFactory; |
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import org.geotools.cs.GeographicCoordinateSystem; |
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import org.geotools.cs.ProjectedCoordinateSystem; |
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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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/**
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* Sistema de Coordenadas (Proyecci?n).
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* @author "Luis W. Sevilla" <sevilla_lui@gva.es>
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*/
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public class CoordSys implements IProjection { |
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private static final Color basicGridColor = new Color(64, 64, 64, 128); |
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protected CoordinateSystemFactory csFactory = CoordinateSystemFactory.getDefault();
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protected CSDatum datum = null; |
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protected GeographicCoordinateSystem geogCS = null; |
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protected ProjectedCoordinateSystem projCS = null; |
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protected String abrev = ""; |
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Color gridColor = basicGridColor;
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public CoordSys(CSDatum datum) {
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this.datum = datum;
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} |
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/**
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* Crea un nuevo CoordSys geogr?fico a partir de uno proyectado.
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* Si el actual es geogr?fico retorna el mismo.
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* @return
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*/
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public CoordSys toGeo() {
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CoordSys coordSys = new CoordSys((CSDatum) getDatum());
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if (geogCS != null) { |
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coordSys.geogCS = this.geogCS;
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} else {
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coordSys.geogCS = projCS.getGeographicCoordinateSystem(); |
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} |
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return coordSys;
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} |
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public IDatum getDatum() {
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return datum;
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} |
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public CoordinateSystem getCS() {
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if (isProjected()) {
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return projCS;
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} |
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return geogCS;
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} |
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public CoordinateSystem getGeogCS() {
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if (geogCS != null) { |
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return geogCS;
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} |
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return projCS.getGeographicCoordinateSystem();
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} |
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/* (no Javadoc)
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* @see org.cresques.cts.IProjection#createPoint(double, double)
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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 String toString() { |
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return getCS().toString();
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} |
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public void setAbrev(String abrev) { |
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this.abrev = abrev;
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} |
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public String getAbrev() { |
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return abrev;
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} |
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/* (no Javadoc)
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* @see org.cresques.cts.IProjection#drawGrid(java.awt.Graphics2D, org.cresques.geo.ViewPortData)
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*/
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public void drawGrid(Graphics2D g, ViewPortData vp) { |
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// TODO Ap?ndice de m?todo generado autom?ticamente
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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 Color getGridColor() { |
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return gridColor;
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} |
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/* (no Javadoc)
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* @see org.cresques.cts.IProjection#toGeo(java.awt.geom.Point2D)
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*/
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public Point2D toGeo(Point2D pt) { |
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if (getGeogCS() == geogCS) {
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return pt;
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} else {
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CoordTrans ct = new CoordTrans(this, toGeo()); |
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return ct.convert(pt, null); |
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} |
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} |
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/* (no Javadoc)
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* @see org.cresques.cts.IProjection#fromGeo(java.awt.geom.Point2D, java.awt.geom.Point2D)
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*/
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public Point2D fromGeo(Point2D gPt, Point2D mPt) { |
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// TODO Ap?ndice de m?todo generado autom?ticamente
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return null; |
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} |
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public double getScale(double minX, double maxX, double w, double dpi) { |
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double scale = 0D; |
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if (projCS == null) { // Es geogr?fico; calcula la escala. |
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scale = ((maxX - minX) * // grados
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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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w; // pixels
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} |
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return scale;
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} |
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public boolean isProjected() { |
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return projCS != null; |
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} |
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} |