1 | //License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.projection;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import org.openstreetmap.josm.data.Bounds;
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7 | import org.openstreetmap.josm.data.coor.LatLon;
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8 | import org.openstreetmap.josm.data.projection.datum.ThreeParameterDatum;
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9 | import org.openstreetmap.josm.data.projection.proj.ProjParameters;
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10 | import org.openstreetmap.josm.data.projection.proj.SwissObliqueMercator;
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11 |
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12 | /**
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13 | * SwissGrid CH1903 / L03, see http://de.wikipedia.org/wiki/Swiss_Grid.
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14 | *
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15 | * Actually, what we have here, is CH1903+ (EPSG:2056), but without
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16 | * the additional false easting of 2000km and false northing 1000 km.
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17 | *
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18 | * To get to CH1903, a shift file is required. So currently, there are errors
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19 | * up to 1.6m (depending on the location).
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20 | *
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21 | * This projection does not have any parameters, it only implements
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22 | * ProjectionSubPrefs to show a warning that the grid file correction is not done.
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23 | */
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24 | public class SwissGrid extends AbstractProjection {
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25 |
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26 | public SwissGrid() {
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27 | ellps = Ellipsoid.Bessel1841;
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28 | datum = new ThreeParameterDatum("SwissGrid Datum", null, ellps, 674.374, 15.056, 405.346);
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29 | x_0 = 600000;
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30 | y_0 = 200000;
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31 | lon_0 = 7.0 + 26.0/60 + 22.50/3600;
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32 | proj = new SwissObliqueMercator();
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33 | try {
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34 | proj.initialize(new ProjParameters() {{
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35 | ellps = SwissGrid.this.ellps;
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36 | lat_0 = 46.0 + 57.0/60 + 8.66/3600;
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37 | }});
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38 | } catch (ProjectionConfigurationException e) {
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39 | throw new RuntimeException(e);
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40 | }
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41 | }
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42 |
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43 | @Override
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44 | public String toString() {
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45 | return tr("Swiss Grid (Switzerland)");
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46 | }
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47 |
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48 | @Override
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49 | public Integer getEpsgCode() {
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50 | return 21781;
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51 | }
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52 |
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53 | @Override
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54 | public int hashCode() {
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55 | return getClass().getName().hashCode(); // we have no variables
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56 | }
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57 |
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58 | @Override
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59 | public String getCacheDirectoryName() {
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60 | return "swissgrid";
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61 | }
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62 |
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63 | @Override
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64 | public Bounds getWorldBoundsLatLon() {
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65 | return new Bounds(new LatLon(45.7, 5.7), new LatLon(47.9, 10.6), false);
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66 | }
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67 |
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68 | }
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