[6380] | 1 | // License: GPL. For details, see LICENSE file.
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[3872] | 2 | package org.openstreetmap.josm.data.projection;
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| 3 |
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[5228] | 4 | import java.io.BufferedReader;
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| 5 | import java.io.IOException;
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| 6 | import java.io.InputStream;
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| 7 | import java.io.InputStreamReader;
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[7082] | 8 | import java.nio.charset.StandardCharsets;
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[8533] | 9 | import java.util.ArrayList;
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[5554] | 10 | import java.util.Collection;
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[5634] | 11 | import java.util.Collections;
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[5072] | 12 | import java.util.HashMap;
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[5634] | 13 | import java.util.HashSet;
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[9126] | 14 | import java.util.LinkedHashMap;
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[8533] | 15 | import java.util.List;
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[8404] | 16 | import java.util.Locale;
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[5072] | 17 | import java.util.Map;
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[5634] | 18 | import java.util.Set;
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[5228] | 19 | import java.util.regex.Matcher;
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| 20 | import java.util.regex.Pattern;
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[9135] | 21 |
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[4126] | 22 | import org.openstreetmap.josm.Main;
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| 23 | import org.openstreetmap.josm.data.coor.EastNorth;
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| 24 | import org.openstreetmap.josm.data.coor.LatLon;
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[5072] | 25 | import org.openstreetmap.josm.data.projection.datum.Datum;
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[7936] | 26 | import org.openstreetmap.josm.data.projection.datum.GRS80Datum;
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[5226] | 27 | import org.openstreetmap.josm.data.projection.datum.NTV2GridShiftFileWrapper;
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[9104] | 28 | import org.openstreetmap.josm.data.projection.datum.SevenParameterDatum;
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| 29 | import org.openstreetmap.josm.data.projection.datum.ThreeParameterDatum;
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[5072] | 30 | import org.openstreetmap.josm.data.projection.datum.WGS84Datum;
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[9419] | 31 | import org.openstreetmap.josm.data.projection.proj.AlbersEqualArea;
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[9549] | 32 | import org.openstreetmap.josm.data.projection.proj.CassiniSoldner;
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[5227] | 33 | import org.openstreetmap.josm.data.projection.proj.ClassProjFactory;
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[9100] | 34 | import org.openstreetmap.josm.data.projection.proj.DoubleStereographic;
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[9560] | 35 | import org.openstreetmap.josm.data.projection.proj.LambertAzimuthalEqualArea;
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[5072] | 36 | import org.openstreetmap.josm.data.projection.proj.LambertConformalConic;
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[5227] | 37 | import org.openstreetmap.josm.data.projection.proj.LonLat;
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[6135] | 38 | import org.openstreetmap.josm.data.projection.proj.Mercator;
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[9532] | 39 | import org.openstreetmap.josm.data.projection.proj.ObliqueMercator;
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[9419] | 40 | import org.openstreetmap.josm.data.projection.proj.PolarStereographic;
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[5072] | 41 | import org.openstreetmap.josm.data.projection.proj.Proj;
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[5227] | 42 | import org.openstreetmap.josm.data.projection.proj.ProjFactory;
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[5072] | 43 | import org.openstreetmap.josm.data.projection.proj.SwissObliqueMercator;
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| 44 | import org.openstreetmap.josm.data.projection.proj.TransverseMercator;
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[5554] | 45 | import org.openstreetmap.josm.gui.preferences.projection.ProjectionChoice;
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| 46 | import org.openstreetmap.josm.gui.preferences.projection.ProjectionPreference;
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[7248] | 47 | import org.openstreetmap.josm.io.CachedFile;
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[8533] | 48 | import org.openstreetmap.josm.tools.Utils;
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[4126] | 49 |
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[3872] | 50 | /**
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[9370] | 51 | * Class to manage projections.
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[3872] | 52 | *
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[9370] | 53 | * Use this class to query available projection or register new projections
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| 54 | * from a plugin.
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[3872] | 55 | */
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[6362] | 56 | public final class Projections {
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[3872] | 57 |
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[9126] | 58 | /**
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| 59 | * Class to hold information about one projection.
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| 60 | */
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| 61 | public static class ProjectionDefinition {
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| 62 | public String code;
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| 63 | public String name;
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| 64 | public String definition;
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| 65 |
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| 66 | public ProjectionDefinition(String code, String name, String definition) {
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| 67 | this.code = code;
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| 68 | this.name = name;
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| 69 | this.definition = definition;
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| 70 | }
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| 71 | }
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| 72 |
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[9133] | 73 | private static final Set<String> allCodes = new HashSet<>();
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| 74 | private static final Map<String, ProjectionChoice> allProjectionChoicesByCode = new HashMap<>();
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| 75 | private static final Map<String, Projection> projectionsByCode_cache = new HashMap<>();
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[6488] | 76 |
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[5072] | 77 | /*********************************
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| 78 | * Registry for custom projection
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| 79 | *
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| 80 | * should be compatible to PROJ.4
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| 81 | */
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[8533] | 82 | static final Map<String, ProjFactory> projs = new HashMap<>();
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| 83 | static final Map<String, Ellipsoid> ellipsoids = new HashMap<>();
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| 84 | static final Map<String, Datum> datums = new HashMap<>();
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| 85 | static final Map<String, NTV2GridShiftFileWrapper> nadgrids = new HashMap<>();
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[9126] | 86 | static final Map<String, ProjectionDefinition> inits;
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[5072] | 87 |
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[5227] | 88 | static {
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[9419] | 89 | registerBaseProjection("aea", AlbersEqualArea.class, "core");
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[9549] | 90 | registerBaseProjection("cass", CassiniSoldner.class, "core");
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[9560] | 91 | registerBaseProjection("laea", LambertAzimuthalEqualArea.class, "core");
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[5227] | 92 | registerBaseProjection("lcc", LambertConformalConic.class, "core");
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[9419] | 93 | registerBaseProjection("lonlat", LonLat.class, "core");
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[9565] | 94 | registerBaseProjection("merc", Mercator.class, "core");
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[9532] | 95 | registerBaseProjection("omerc", ObliqueMercator.class, "core");
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[5227] | 96 | registerBaseProjection("somerc", SwissObliqueMercator.class, "core");
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[9419] | 97 | registerBaseProjection("stere", PolarStereographic.class, "core");
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| 98 | registerBaseProjection("sterea", DoubleStereographic.class, "core");
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[5227] | 99 | registerBaseProjection("tmerc", TransverseMercator.class, "core");
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[5072] | 100 |
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[8451] | 101 | ellipsoids.put("airy", Ellipsoid.Airy);
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| 102 | ellipsoids.put("mod_airy", Ellipsoid.AiryMod);
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| 103 | ellipsoids.put("aust_SA", Ellipsoid.AustSA);
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| 104 | ellipsoids.put("bessel", Ellipsoid.Bessel1841);
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[9104] | 105 | ellipsoids.put("bess_nam", Ellipsoid.BesselNamibia);
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[8451] | 106 | ellipsoids.put("clrk66", Ellipsoid.Clarke1866);
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[9104] | 107 | ellipsoids.put("clrk80", Ellipsoid.Clarke1880);
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[8451] | 108 | ellipsoids.put("clarkeIGN", Ellipsoid.ClarkeIGN);
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[9104] | 109 | ellipsoids.put("evrstSS", Ellipsoid.EverestSabahSarawak);
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[8451] | 110 | ellipsoids.put("intl", Ellipsoid.Hayford);
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| 111 | ellipsoids.put("helmert", Ellipsoid.Helmert);
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| 112 | ellipsoids.put("krass", Ellipsoid.Krassowsky);
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[6463] | 113 | ellipsoids.put("GRS67", Ellipsoid.GRS67);
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[5072] | 114 | ellipsoids.put("GRS80", Ellipsoid.GRS80);
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[9104] | 115 | ellipsoids.put("WGS66", Ellipsoid.WGS66);
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[8451] | 116 | ellipsoids.put("WGS72", Ellipsoid.WGS72);
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[5072] | 117 | ellipsoids.put("WGS84", Ellipsoid.WGS84);
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| 118 |
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| 119 | datums.put("WGS84", WGS84Datum.INSTANCE);
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[7936] | 120 | datums.put("GRS80", GRS80Datum.INSTANCE);
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[9104] | 121 | datums.put("NAD83", GRS80Datum.INSTANCE);
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| 122 | datums.put("carthage", new ThreeParameterDatum(
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| 123 | "Carthage 1934 Tunisia", "carthage",
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| 124 | Ellipsoid.Clarke1880, -263.0, 6.0, 431.0));
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| 125 | datums.put("GGRS87", new ThreeParameterDatum(
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[9108] | 126 | "Greek Geodetic Reference System 1987", "GGRS87",
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[9104] | 127 | Ellipsoid.GRS80, -199.87, 74.79, 246.62));
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[9108] | 128 | datums.put("hermannskogel", new ThreeParameterDatum(
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[9104] | 129 | "Hermannskogel", "hermannskogel",
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| 130 | Ellipsoid.Bessel1841, 653.0, -212.0, 449.0));
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| 131 | datums.put("ire65", new SevenParameterDatum(
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| 132 | "Ireland 1965", "ire65",
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| 133 | Ellipsoid.AiryMod, 482.530, -130.596, 564.557, -1.042, -0.214, -0.631, 8.15));
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| 134 | datums.put("nzgd49", new SevenParameterDatum(
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| 135 | "New Zealand Geodetic Datum 1949", "nzgd49",
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| 136 | Ellipsoid.Hayford, 59.47, -5.04, 187.44, 0.47, -0.1, 1.024, -4.5993));
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| 137 | datums.put("OSGB36", new SevenParameterDatum(
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[9108] | 138 | "Airy 1830", "OSGB36",
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[9104] | 139 | Ellipsoid.Airy, 446.448, -125.157, 542.060, 0.1502, 0.2470, 0.8421, -20.4894));
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| 140 | datums.put("potsdam", new SevenParameterDatum(
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| 141 | "Potsdam Rauenberg 1950 DHDN", "potsdam",
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| 142 | Ellipsoid.Bessel1841, 598.1, 73.7, 418.2, 0.202, 0.045, -2.455, 6.7));
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[5226] | 143 |
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| 144 | nadgrids.put("BETA2007.gsb", NTV2GridShiftFileWrapper.BETA2007);
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| 145 | nadgrids.put("ntf_r93_b.gsb", NTV2GridShiftFileWrapper.ntf_rgf93);
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[5228] | 146 |
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[9127] | 147 | List<ProjectionDefinition> pds;
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[9126] | 148 | try {
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[9133] | 149 | pds = loadProjectionDefinitions("resource://data/projection/custom-epsg");
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[9126] | 150 | } catch (IOException ex) {
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| 151 | throw new RuntimeException(ex);
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| 152 | }
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[9127] | 153 | inits = new LinkedHashMap<>();
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| 154 | for (ProjectionDefinition pd : pds) {
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| 155 | inits.put(pd.code, pd);
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| 156 | }
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[9133] | 157 |
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| 158 | for (ProjectionChoice pc : ProjectionPreference.getProjectionChoices()) {
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| 159 | for (String code : pc.allCodes()) {
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| 160 | allProjectionChoicesByCode.put(code, pc);
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| 161 | }
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| 162 | }
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| 163 | allCodes.addAll(inits.keySet());
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| 164 | allCodes.addAll(allProjectionChoicesByCode.keySet());
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[5072] | 165 | }
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| 166 |
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[9133] | 167 | private Projections() {
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| 168 | // Hide default constructor for utils classes
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| 169 | }
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| 170 |
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[9370] | 171 | /**
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| 172 | * Convert from lat/lon to easting/northing using the current projection.
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| 173 | *
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| 174 | * @param ll the geographical point to convert (in WGS84 lat/lon)
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| 175 | * @return the corresponding east/north coordinates
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| 176 | */
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[9133] | 177 | public static EastNorth project(LatLon ll) {
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| 178 | if (ll == null) return null;
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| 179 | return Main.getProjection().latlon2eastNorth(ll);
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| 180 | }
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| 181 |
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[9370] | 182 | /**
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| 183 | * Convert from easting/norting to lat/lon using the current projection.
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| 184 | *
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| 185 | * @param en the geographical point to convert (in projected coordinates)
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| 186 | * @return the corresponding lat/lon (WGS84)
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| 187 | */
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[9133] | 188 | public static LatLon inverseProject(EastNorth en) {
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| 189 | if (en == null) return null;
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| 190 | return Main.getProjection().eastNorth2latlon(en);
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| 191 | }
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| 192 |
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[5227] | 193 | /**
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| 194 | * Plugins can register additional base projections.
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| 195 | *
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| 196 | * @param id The "official" PROJ.4 id. In case the projection is not supported
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| 197 | * by PROJ.4, use some prefix, e.g. josm:myproj or gdal:otherproj.
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| 198 | * @param fac The base projection factory.
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| 199 | * @param origin Multiple plugins may implement the same base projection.
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| 200 | * Provide plugin name or similar string, so it be differentiated.
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| 201 | */
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| 202 | public static void registerBaseProjection(String id, ProjFactory fac, String origin) {
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| 203 | projs.put(id, fac);
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| 204 | }
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| 205 |
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| 206 | public static void registerBaseProjection(String id, Class<? extends Proj> projClass, String origin) {
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| 207 | registerBaseProjection(id, new ClassProjFactory(projClass), origin);
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| 208 | }
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| 209 |
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[9370] | 210 | /**
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| 211 | * Get a base projection by id.
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| 212 | *
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| 213 | * @param id the id, for example "lonlat" or "tmerc"
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| 214 | * @return the corresponding base projection if the id is known, null otherwise
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| 215 | */
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[5227] | 216 | public static Proj getBaseProjection(String id) {
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| 217 | ProjFactory fac = projs.get(id);
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| 218 | if (fac == null) return null;
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| 219 | return fac.createInstance();
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| 220 | }
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| 221 |
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[9370] | 222 | /**
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| 223 | * Get an ellipsoid by id.
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| 224 | *
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| 225 | * @param id the id, for example "bessel" or "WGS84"
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| 226 | * @return the corresponding ellipsoid if the id is known, null otherwise
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| 227 | */
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[5072] | 228 | public static Ellipsoid getEllipsoid(String id) {
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| 229 | return ellipsoids.get(id);
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| 230 | }
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| 231 |
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[9370] | 232 | /**
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| 233 | * Get a geodetic datum by id.
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| 234 | *
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| 235 | * @param id the id, for example "potsdam" or "WGS84"
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| 236 | * @return the corresponding datum if the id is known, null otherwise
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| 237 | */
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[5072] | 238 | public static Datum getDatum(String id) {
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| 239 | return datums.get(id);
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| 240 | }
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[5226] | 241 |
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[9370] | 242 | /**
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| 243 | * Get a NTV2 grid database by id.
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| 244 | * @param id the id
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| 245 | * @return the corresponding NTV2 grid if the id is known, null otherwise
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| 246 | */
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[5228] | 247 | public static NTV2GridShiftFileWrapper getNTV2Grid(String id) {
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[5226] | 248 | return nadgrids.get(id);
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| 249 | }
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[5228] | 250 |
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[7936] | 251 | /**
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[9370] | 252 | * Get the projection definition string for the given code.
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| 253 | * @param code the code
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[7936] | 254 | * @return the string that can be processed by #{link CustomProjection}.
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[9370] | 255 | * Null, if the code isn't supported.
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[7936] | 256 | */
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[9370] | 257 | public static String getInit(String code) {
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| 258 | ProjectionDefinition pd = inits.get(code.toUpperCase(Locale.ENGLISH));
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[9126] | 259 | if (pd == null) return null;
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| 260 | return pd.definition;
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[5228] | 261 | }
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| 262 |
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| 263 | /**
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[9126] | 264 | * Load projection definitions from file.
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[9133] | 265 | *
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[9126] | 266 | * @param path the path
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| 267 | * @return projection definitions
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[9135] | 268 | * @throws IOException in case of I/O error
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[5228] | 269 | */
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[9127] | 270 | public static List<ProjectionDefinition> loadProjectionDefinitions(String path) throws IOException {
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[7033] | 271 | try (
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[9126] | 272 | InputStream in = new CachedFile(path).getInputStream();
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[7082] | 273 | BufferedReader r = new BufferedReader(new InputStreamReader(in, StandardCharsets.UTF_8));
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[7033] | 274 | ) {
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[9126] | 275 | return loadProjectionDefinitions(r);
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[5228] | 276 | }
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| 277 | }
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[5554] | 278 |
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[9126] | 279 | /**
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| 280 | * Load projection definitions from file.
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[9133] | 281 | *
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[9126] | 282 | * @param r the reader
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| 283 | * @return projection definitions
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[9135] | 284 | * @throws IOException in case of I/O error
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[9126] | 285 | */
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[9127] | 286 | public static List<ProjectionDefinition> loadProjectionDefinitions(BufferedReader r) throws IOException {
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| 287 | List<ProjectionDefinition> result = new ArrayList<>();
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[9126] | 288 | Pattern epsgPattern = Pattern.compile("<(\\d+)>(.*)<>");
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| 289 | String line, lastline = "";
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| 290 | while ((line = r.readLine()) != null) {
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| 291 | line = line.trim();
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| 292 | if (!line.startsWith("#") && !line.isEmpty()) {
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| 293 | if (!lastline.startsWith("#")) throw new AssertionError("EPSG file seems corrupted");
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| 294 | String name = lastline.substring(1).trim();
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| 295 | Matcher m = epsgPattern.matcher(line);
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| 296 | if (m.matches()) {
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| 297 | String code = "EPSG:" + m.group(1);
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| 298 | String definition = m.group(2).trim();
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[9127] | 299 | result.add(new ProjectionDefinition(code, name, definition));
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[9126] | 300 | } else {
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| 301 | Main.warn("Failed to parse line from the EPSG projection definition: "+line);
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| 302 | }
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| 303 | }
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| 304 | lastline = line;
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| 305 | }
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| 306 | return result;
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| 307 | }
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| 308 |
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[9370] | 309 | /**
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| 310 | * Get a projection by code.
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| 311 | * @param code the code, e.g. "EPSG:2026"
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| 312 | * @return the corresponding projection, if the code is known, null otherwise
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| 313 | */
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[5554] | 314 | public static Projection getProjectionByCode(String code) {
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[5634] | 315 | Projection proj = projectionsByCode_cache.get(code);
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| 316 | if (proj != null) return proj;
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| 317 | ProjectionChoice pc = allProjectionChoicesByCode.get(code);
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[6003] | 318 | if (pc != null) {
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| 319 | Collection<String> pref = pc.getPreferencesFromCode(code);
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| 320 | pc.setPreferences(pref);
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| 321 | try {
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| 322 | proj = pc.getProjection();
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[7048] | 323 | } catch (Exception e) {
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| 324 | String cause = e.getMessage();
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[6003] | 325 | Main.warn("Unable to get projection "+code+" with "+pc + (cause != null ? ". "+cause : ""));
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| 326 | }
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| 327 | }
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| 328 | if (proj == null) {
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[9126] | 329 | ProjectionDefinition pd = inits.get(code);
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| 330 | if (pd == null) return null;
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| 331 | proj = new CustomProjection(pd.name, code, pd.definition, null);
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[5634] | 332 | }
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| 333 | projectionsByCode_cache.put(code, proj);
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| 334 | return proj;
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[5554] | 335 | }
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| 336 |
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[9240] | 337 | /**
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| 338 | * Get a list of all supported projection codes.
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| 339 | *
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| 340 | * @return all supported projection codes
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| 341 | * @see #getProjectionByCode(java.lang.String)
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| 342 | */
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[5634] | 343 | public static Collection<String> getAllProjectionCodes() {
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| 344 | return Collections.unmodifiableCollection(allCodes);
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| 345 | }
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[8533] | 346 |
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[9370] | 347 | /**
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| 348 | * Get a list of ids of all registered base projections.
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| 349 | *
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| 350 | * @return all registered base projection ids
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| 351 | * @see #getBaseProjection(java.lang.String)
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| 352 | */
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| 353 | public static Collection<String> getAllBaseProjectionIds() {
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| 354 | return projs.keySet();
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| 355 | }
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| 356 |
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[8533] | 357 | private static String listKeys(Map<String, ?> map) {
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| 358 | List<String> keys = new ArrayList<>(map.keySet());
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| 359 | Collections.sort(keys);
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| 360 | return Utils.join(", ", keys);
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| 361 | }
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| 362 |
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| 363 | /**
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| 364 | * Replies the list of projections as string (comma separated).
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| 365 | * @return the list of projections as string (comma separated)
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| 366 | * @since 8533
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| 367 | */
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| 368 | public static String listProjs() {
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| 369 | return listKeys(projs);
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| 370 | }
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| 371 |
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| 372 | /**
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| 373 | * Replies the list of ellipsoids as string (comma separated).
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| 374 | * @return the list of ellipsoids as string (comma separated)
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| 375 | * @since 8533
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| 376 | */
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| 377 | public static String listEllipsoids() {
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| 378 | return listKeys(ellipsoids);
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| 379 | }
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| 380 |
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| 381 | /**
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| 382 | * Replies the list of datums as string (comma separated).
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| 383 | * @return the list of datums as string (comma separated)
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| 384 | * @since 8533
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| 385 | */
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| 386 | public static String listDatums() {
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| 387 | return listKeys(datums);
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| 388 | }
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| 389 |
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| 390 | /**
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| 391 | * Replies the list of nadgrids as string (comma separated).
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| 392 | * @return the list of nadgrids as string (comma separated)
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| 393 | * @since 8533
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| 394 | */
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| 395 | public static String listNadgrids() {
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| 396 | return listKeys(nadgrids);
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| 397 | }
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[3872] | 398 | }
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