source: josm/trunk/src/org/openstreetmap/josm/data/projection/UTM_France_DOM.java@ 5235

// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.data.projection;

import static org.openstreetmap.josm.tools.I18n.tr;

import org.openstreetmap.josm.data.Bounds;
import org.openstreetmap.josm.data.coor.LatLon;
import org.openstreetmap.josm.data.projection.datum.Datum;
import org.openstreetmap.josm.data.projection.datum.GRS80Datum;
import org.openstreetmap.josm.data.projection.datum.SevenParameterDatum;
import org.openstreetmap.josm.data.projection.datum.ThreeParameterDatum;
import org.openstreetmap.josm.data.projection.proj.ProjParameters;

/**
 * This class implements all projections for French departements in the Caribbean Sea and
 * Indian Ocean using the UTM transvers Mercator projection and specific geodesic settings.
 *
 */
public class UTM_France_DOM extends AbstractProjection {

    private final static Bounds FortMarigotBounds = new Bounds( new LatLon(17.6,-63.25), new LatLon(18.5,-62.5), false);
    private final static Bounds SainteAnneBounds = new Bounds( new LatLon(15.8,-61.9), new LatLon(16.6,-60.9), false);
    private final static Bounds MartiniqueBounds = new Bounds( new LatLon(14.25,-61.25), new LatLon(15.025,-60.725), false);
    private final static Bounds ReunionBounds = new Bounds( new LatLon(-25.92,37.58), new LatLon(-10.6, 58.27), false);
    private final static Bounds GuyaneBounds = new Bounds( new LatLon(2.16 , -54.0), new LatLon(9.06 , -49.62), false);
    private final static Bounds[] utmBounds = { FortMarigotBounds, SainteAnneBounds, MartiniqueBounds, ReunionBounds, GuyaneBounds };

    private final static Integer FortMarigotEPSG = 2969;
    private final static Integer SainteAnneEPSG = 2970;
    private final static Integer MartiniqueEPSG = 2973;
    private final static Integer ReunionEPSG = 2975;
    private final static Integer GuyaneEPSG = 2972;
    public final static Integer[] utmEPSGs = { FortMarigotEPSG, SainteAnneEPSG, MartiniqueEPSG, ReunionEPSG, GuyaneEPSG };

    private final static Datum FortMarigotDatum = new ThreeParameterDatum("FortMarigot Datum", null, Ellipsoid.hayford, 136.596, 248.148, -429.789);
    private final static Datum SainteAnneDatum = new SevenParameterDatum("SainteAnne Datum", null, Ellipsoid.hayford, -472.29, -5.63, -304.12, 0.4362, -0.8374, 0.2563, 1.8984);
    private final static Datum MartiniqueDatum = new SevenParameterDatum("Martinique Datum", null, Ellipsoid.hayford, 126.926, 547.939, 130.409, -2.78670, 5.16124, -0.85844, 13.82265);
    private final static Datum ReunionDatum = GRS80Datum.INSTANCE;
    private final static Datum GuyaneDatum = GRS80Datum.INSTANCE;
    private final static Datum[] utmDatums = { FortMarigotDatum, SainteAnneDatum, MartiniqueDatum, ReunionDatum, GuyaneDatum };

    private final static int[] utmZones = { 20, 20, 20, 40, 22 };

    /**
     * UTM zone (from 1 to 60)
     */
    private static int zone;
    /**
     * whether north or south hemisphere
     */
    private boolean isNorth;

    public static final int DEFAULT_GEODESIC = 0;

    public int currentGeodesic;


    public UTM_France_DOM() {
        this(DEFAULT_GEODESIC);
    }

    public UTM_France_DOM(int currentGeodesic) {
        this.currentGeodesic = currentGeodesic;
        datum = utmDatums[currentGeodesic];
        ellps = datum.getEllipsoid();
        proj = new org.openstreetmap.josm.data.projection.proj.TransverseMercator();
        try {
            proj.initialize(new ProjParameters() {{ ellps = UTM_France_DOM.this.ellps; }});
        } catch (ProjectionConfigurationException e) {
            throw new RuntimeException(e);
        }
        isNorth = currentGeodesic != 3;
        zone = utmZones[currentGeodesic];
        x_0 = 500000;
        y_0 = isNorth ? 0.0 : 10000000.0;
        lon_0 = 6 * zone - 183;
        k_0 = 0.9996;
    }

    public int getCurrentGeodesic() {
        return currentGeodesic;
    }

    @Override
    public String toString() {
        return tr("UTM France (DOM)");
    }

    @Override
    public String getCacheDirectoryName() {
        return this.toString();
    }

    @Override
    public Bounds getWorldBoundsLatLon() {
        return utmBounds[currentGeodesic];
    }

    @Override
    public Integer getEpsgCode() {
        return utmEPSGs[currentGeodesic];
    }

    @Override
    public int hashCode() {
        return getClass().getName().hashCode()+currentGeodesic; // our only real variable
    }

}