root / branches / Mobile_Compatible_Hito_1 / libProjectionCresques / src / org / gvsig / projection / cresques / cts / gt2 / CSUTM.java @ 21932
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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) 2004-7.
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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.gvsig.projection.cresques.cts.gt2; |
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import org.geotools.cs.AxisInfo; |
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import org.geotools.cs.Projection; |
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import org.geotools.units.Unit; |
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import org.gvsig.projection.cts.IDatum; |
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import org.gvsig.projection.cts.UTM; |
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import org.opengis.referencing.FactoryException; |
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/**
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* @author "Luis W. Sevilla" <sevilla_lui@gva.es>
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*/
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public class CSUTM extends CoordSys implements UTM { |
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public CSUTM(CSDatum datum, int zone) { |
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super(datum);
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init(datum, zone, "N");
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} |
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public CSUTM(CSDatum datum, int zone, String ns) { |
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super(datum);
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init(datum, zone, ns); |
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} |
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public void init(IDatum datum, int zone, String ns) { |
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org.geotools.units.Unit linearUnit = org.geotools.units.Unit.METRE; |
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javax.media.jai.ParameterList params = csFactory.createProjectionParameterList("Transverse_Mercator");
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params.setParameter("semi_major",((CSDatum)datum).getDatum().getEllipsoid().getSemiMajorAxis());
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params.setParameter("semi_minor",((CSDatum)datum).getDatum().getEllipsoid().getSemiMinorAxis());
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params.setParameter("central_meridian", (double) ((zone * 6) - 183)); |
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params.setParameter("latitude_of_origin", 0.0); |
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params.setParameter("scale_factor", 0.9996); |
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params.setParameter("false_easting", 500000.0); |
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if (ns.toUpperCase().compareTo("S") == 0) |
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params.setParameter("false_northing", 10000000.0); |
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else
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params.setParameter("false_northing", 0.0); |
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try {
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Projection projection = csFactory.createProjection("UTM" + zone,"Transverse_Mercator",params); |
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projCS = csFactory.createProjectedCoordinateSystem(projection.getName().toString(), |
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geogCS, |
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projection, |
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linearUnit, |
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AxisInfo.X, |
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AxisInfo.Y); |
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} catch (FactoryException e) {
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// TODO Bloque catch generado autom?ticamente
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e.printStackTrace(); |
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} |
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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 = super.getScale(minX, maxX, w, dpi); |
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if (projCS != null) { // Es geogr?fico; calcula la escala. |
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scale = ((maxX - minX) * // metros
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(dpi / 2.54 * 100.0)) / // 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 String toString() { |
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return projCS.toString();
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} |
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} |