[5072] | 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 java.util.ArrayList;
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[10870] | 7 | import java.util.Arrays;
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[9559] | 8 | import java.util.EnumMap;
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[5072] | 9 | import java.util.HashMap;
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| 10 | import java.util.List;
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| 11 | import java.util.Map;
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[11553] | 12 | import java.util.Optional;
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[8568] | 13 | import java.util.concurrent.ConcurrentHashMap;
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[5072] | 14 | import java.util.regex.Matcher;
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| 15 | import java.util.regex.Pattern;
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[9562] | 16 |
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[5072] | 17 | import org.openstreetmap.josm.data.Bounds;
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[9419] | 18 | import org.openstreetmap.josm.data.ProjectionBounds;
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| 19 | import org.openstreetmap.josm.data.coor.EastNorth;
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[5072] | 20 | import org.openstreetmap.josm.data.coor.LatLon;
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[12792] | 21 | import org.openstreetmap.josm.data.coor.conversion.LatLonParser;
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[5072] | 22 | import org.openstreetmap.josm.data.projection.datum.CentricDatum;
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| 23 | import org.openstreetmap.josm.data.projection.datum.Datum;
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[5226] | 24 | import org.openstreetmap.josm.data.projection.datum.NTV2Datum;
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[5237] | 25 | import org.openstreetmap.josm.data.projection.datum.NullDatum;
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[5072] | 26 | import org.openstreetmap.josm.data.projection.datum.SevenParameterDatum;
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| 27 | import org.openstreetmap.josm.data.projection.datum.ThreeParameterDatum;
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[5226] | 28 | import org.openstreetmap.josm.data.projection.datum.WGS84Datum;
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[9532] | 29 | import org.openstreetmap.josm.data.projection.proj.ICentralMeridianProvider;
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[9565] | 30 | import org.openstreetmap.josm.data.projection.proj.IScaleFactorProvider;
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[5548] | 31 | import org.openstreetmap.josm.data.projection.proj.Mercator;
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[5072] | 32 | import org.openstreetmap.josm.data.projection.proj.Proj;
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| 33 | import org.openstreetmap.josm.data.projection.proj.ProjParameters;
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[11746] | 34 | import org.openstreetmap.josm.tools.JosmRuntimeException;
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[12620] | 35 | import org.openstreetmap.josm.tools.Logging;
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[5072] | 36 | import org.openstreetmap.josm.tools.Utils;
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[10870] | 37 | import org.openstreetmap.josm.tools.bugreport.BugReport;
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[5072] | 38 |
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| 39 | /**
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[7370] | 40 | * Custom projection.
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[5072] | 41 | *
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| 42 | * Inspired by PROJ.4 and Proj4J.
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[7370] | 43 | * @since 5072
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[5072] | 44 | */
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[5226] | 45 | public class CustomProjection extends AbstractProjection {
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[5072] | 46 |
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[9630] | 47 | /*
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[9642] | 48 | * Equation for METER_PER_UNIT_DEGREE taken from:
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| 49 | * https://github.com/openlayers/ol3/blob/master/src/ol/proj/epsg4326projection.js#L58
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[9630] | 50 | * Value for Radius taken form:
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[9642] | 51 | * https://github.com/openlayers/ol3/blob/master/src/ol/sphere/wgs84sphere.js#L11
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[9630] | 52 | */
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[9642] | 53 | private static final double METER_PER_UNIT_DEGREE = 2 * Math.PI * 6378137.0 / 360;
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[8570] | 54 | private static final Map<String, Double> UNITS_TO_METERS = getUnitsToMeters();
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[9105] | 55 | private static final Map<String, Double> PRIME_MERIDANS = getPrimeMeridians();
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[8568] | 56 |
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[5226] | 57 | /**
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| 58 | * pref String that defines the projection
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| 59 | *
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| 60 | * null means fall back mode (Mercator)
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| 61 | */
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[5234] | 62 | protected String pref;
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[5548] | 63 | protected String name;
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| 64 | protected String code;
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| 65 | protected String cacheDir;
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[5228] | 66 | protected Bounds bounds;
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[9790] | 67 | private double metersPerUnitWMTS;
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[8584] | 68 | private String axis = "enu"; // default axis orientation is East, North, Up
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[5072] | 69 |
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[10870] | 70 | private static final List<String> LON_LAT_VALUES = Arrays.asList("longlat", "latlon", "latlong");
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| 71 |
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[7370] | 72 | /**
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| 73 | * Proj4-like projection parameters. See <a href="https://trac.osgeo.org/proj/wiki/GenParms">reference</a>.
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| 74 | * @since 7370 (public)
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| 75 | */
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[8836] | 76 | public enum Param {
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[5227] | 77 |
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[7370] | 78 | /** False easting */
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[5239] | 79 | x_0("x_0", true),
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[7370] | 80 | /** False northing */
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[5239] | 81 | y_0("y_0", true),
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[7370] | 82 | /** Central meridian */
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[5239] | 83 | lon_0("lon_0", true),
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[9105] | 84 | /** Prime meridian */
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| 85 | pm("pm", true),
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[7370] | 86 | /** Scaling factor */
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[5239] | 87 | k_0("k_0", true),
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[7370] | 88 | /** Ellipsoid name (see {@code proj -le}) */
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[5239] | 89 | ellps("ellps", true),
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[7370] | 90 | /** Semimajor radius of the ellipsoid axis */
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[5239] | 91 | a("a", true),
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[7370] | 92 | /** Eccentricity of the ellipsoid squared */
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[5239] | 93 | es("es", true),
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[7370] | 94 | /** Reciprocal of the ellipsoid flattening term (e.g. 298) */
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[5239] | 95 | rf("rf", true),
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[7370] | 96 | /** Flattening of the ellipsoid = 1-sqrt(1-e^2) */
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[5239] | 97 | f("f", true),
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[7370] | 98 | /** Semiminor radius of the ellipsoid axis */
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[5239] | 99 | b("b", true),
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[7370] | 100 | /** Datum name (see {@code proj -ld}) */
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[5239] | 101 | datum("datum", true),
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[7370] | 102 | /** 3 or 7 term datum transform parameters */
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[5239] | 103 | towgs84("towgs84", true),
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[7370] | 104 | /** Filename of NTv2 grid file to use for datum transforms */
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[5239] | 105 | nadgrids("nadgrids", true),
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[7370] | 106 | /** Projection name (see {@code proj -l}) */
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[5239] | 107 | proj("proj", true),
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[7370] | 108 | /** Latitude of origin */
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[5239] | 109 | lat_0("lat_0", true),
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[7370] | 110 | /** Latitude of first standard parallel */
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[5239] | 111 | lat_1("lat_1", true),
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[7370] | 112 | /** Latitude of second standard parallel */
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[5239] | 113 | lat_2("lat_2", true),
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[9532] | 114 | /** Latitude of true scale (Polar Stereographic) */
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[9419] | 115 | lat_ts("lat_ts", true),
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[9532] | 116 | /** longitude of the center of the projection (Oblique Mercator) */
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| 117 | lonc("lonc", true),
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| 118 | /** azimuth (true) of the center line passing through the center of the
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| 119 | * projection (Oblique Mercator) */
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| 120 | alpha("alpha", true),
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| 121 | /** rectified bearing of the center line (Oblique Mercator) */
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| 122 | gamma("gamma", true),
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| 123 | /** select "Hotine" variant of Oblique Mercator */
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| 124 | no_off("no_off", false),
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| 125 | /** legacy alias for no_off */
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| 126 | no_uoff("no_uoff", false),
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| 127 | /** longitude of first point (Oblique Mercator) */
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| 128 | lon_1("lon_1", true),
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| 129 | /** longitude of second point (Oblique Mercator) */
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| 130 | lon_2("lon_2", true),
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[7370] | 131 | /** the exact proj.4 string will be preserved in the WKT representation */
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[5239] | 132 | wktext("wktext", false), // ignored
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[7370] | 133 | /** meters, US survey feet, etc. */
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[8568] | 134 | units("units", true),
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[7370] | 135 | /** Don't use the /usr/share/proj/proj_def.dat defaults file */
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[5239] | 136 | no_defs("no_defs", false),
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| 137 | init("init", true),
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[8584] | 138 | /** crs units to meter multiplier */
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[8568] | 139 | to_meter("to_meter", true),
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[8584] | 140 | /** definition of axis for projection */
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| 141 | axis("axis", true),
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[8609] | 142 | /** UTM zone */
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| 143 | zone("zone", true),
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| 144 | /** indicate southern hemisphere for UTM */
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| 145 | south("south", false),
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[9125] | 146 | /** vertical units - ignore, as we don't use height information */
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| 147 | vunits("vunits", true),
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[6854] | 148 | // JOSM extensions, not present in PROJ.4
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| 149 | wmssrs("wmssrs", true),
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[5239] | 150 | bounds("bounds", true);
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[5227] | 151 |
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[7371] | 152 | /** Parameter key */
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| 153 | public final String key;
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| 154 | /** {@code true} if the parameter has a value */
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| 155 | public final boolean hasValue;
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[5227] | 156 |
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[7371] | 157 | /** Map of all parameters by key */
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[8568] | 158 | static final Map<String, Param> paramsByKey = new ConcurrentHashMap<>();
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[5227] | 159 | static {
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[5239] | 160 | for (Param p : Param.values()) {
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[5227] | 161 | paramsByKey.put(p.key, p);
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| 162 | }
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[10870] | 163 | // alias
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| 164 | paramsByKey.put("k", Param.k_0);
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[5227] | 165 | }
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| 166 |
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[5239] | 167 | Param(String key, boolean hasValue) {
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[5227] | 168 | this.key = key;
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| 169 | this.hasValue = hasValue;
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| 170 | }
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| 171 | }
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| 172 |
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[11931] | 173 | enum Polarity {
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[10870] | 174 | NORTH(LatLon.NORTH_POLE),
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| 175 | SOUTH(LatLon.SOUTH_POLE);
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[9559] | 176 |
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[10870] | 177 | private final LatLon latlon;
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| 178 |
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| 179 | Polarity(LatLon latlon) {
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| 180 | this.latlon = latlon;
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| 181 | }
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| 182 |
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[11931] | 183 | LatLon getLatLon() {
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[10870] | 184 | return latlon;
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| 185 | }
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[9559] | 186 | }
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| 187 |
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[10870] | 188 | private EnumMap<Polarity, EastNorth> polesEN;
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| 189 |
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[7370] | 190 | /**
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| 191 | * Constructs a new empty {@code CustomProjection}.
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| 192 | */
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[5234] | 193 | public CustomProjection() {
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[8415] | 194 | // contents can be set later with update()
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[5234] | 195 | }
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| 196 |
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[7370] | 197 | /**
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| 198 | * Constructs a new {@code CustomProjection} with given parameters.
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[8509] | 199 | * @param pref String containing projection parameters
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| 200 | * (ex: "+proj=tmerc +lon_0=-3 +k_0=0.9996 +x_0=500000 +ellps=WGS84 +datum=WGS84 +bounds=-8,-5,2,85")
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[7370] | 201 | */
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[5234] | 202 | public CustomProjection(String pref) {
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[12294] | 203 | this(null, null, pref);
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[5548] | 204 | }
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| 205 |
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| 206 | /**
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[7370] | 207 | * Constructs a new {@code CustomProjection} with given name, code and parameters.
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[5548] | 208 | *
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| 209 | * @param name describe projection in one or two words
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| 210 | * @param code unique code for this projection - may be null
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| 211 | * @param pref the string that defines the custom projection
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| 212 | * @param cacheDir cache directory name
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[12293] | 213 | * @deprecated unused - remove in 2017-09
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[5548] | 214 | */
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[12295] | 215 | @Deprecated
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[5548] | 216 | public CustomProjection(String name, String code, String pref, String cacheDir) {
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[12293] | 217 | this(name, code, pref);
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| 218 | }
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| 219 |
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| 220 | /**
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| 221 | * Constructs a new {@code CustomProjection} with given name, code and parameters.
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| 222 | *
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| 223 | * @param name describe projection in one or two words
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| 224 | * @param code unique code for this projection - may be null
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| 225 | * @param pref the string that defines the custom projection
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| 226 | */
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| 227 | public CustomProjection(String name, String code, String pref) {
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[5548] | 228 | this.name = name;
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| 229 | this.code = code;
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| 230 | this.pref = pref;
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[5234] | 231 | try {
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| 232 | update(pref);
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| 233 | } catch (ProjectionConfigurationException ex) {
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[12620] | 234 | Logging.trace(ex);
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[5234] | 235 | try {
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| 236 | update(null);
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| 237 | } catch (ProjectionConfigurationException ex1) {
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[10870] | 238 | throw BugReport.intercept(ex1).put("name", name).put("code", code).put("pref", pref);
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[5234] | 239 | }
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| 240 | }
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| 241 | }
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| 242 |
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[7370] | 243 | /**
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| 244 | * Updates this {@code CustomProjection} with given parameters.
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| 245 | * @param pref String containing projection parameters (ex: "+proj=lonlat +ellps=WGS84 +datum=WGS84 +bounds=-180,-90,180,90")
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| 246 | * @throws ProjectionConfigurationException if {@code pref} cannot be parsed properly
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| 247 | */
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[6890] | 248 | public final void update(String pref) throws ProjectionConfigurationException {
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[5228] | 249 | this.pref = pref;
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[5226] | 250 | if (pref == null) {
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| 251 | ellps = Ellipsoid.WGS84;
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| 252 | datum = WGS84Datum.INSTANCE;
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[5548] | 253 | proj = new Mercator();
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[5228] | 254 | bounds = new Bounds(
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[6203] | 255 | -85.05112877980659, -180.0,
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| 256 | 85.05112877980659, 180.0, true);
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[5226] | 257 | } else {
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[9128] | 258 | Map<String, String> parameters = parseParameterList(pref, false);
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| 259 | parameters = resolveInits(parameters, false);
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[5072] | 260 | ellps = parseEllipsoid(parameters);
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| 261 | datum = parseDatum(parameters, ellps);
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[8610] | 262 | if (ellps == null) {
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| 263 | ellps = datum.getEllipsoid();
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| 264 | }
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[5072] | 265 | proj = parseProjection(parameters, ellps);
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[8609] | 266 | // "utm" is a shortcut for a set of parameters
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| 267 | if ("utm".equals(parameters.get(Param.proj.key))) {
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[10870] | 268 | Integer zone;
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[8609] | 269 | try {
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[11553] | 270 | zone = Integer.valueOf(Optional.ofNullable(parameters.get(Param.zone.key)).orElseThrow(
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| 271 | () -> new ProjectionConfigurationException(tr("UTM projection (''+proj=utm'') requires ''+zone=...'' parameter."))));
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[8609] | 272 | } catch (NumberFormatException e) {
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| 273 | zone = null;
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| 274 | }
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| 275 | if (zone == null || zone < 1 || zone > 60)
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[8638] | 276 | throw new ProjectionConfigurationException(tr("Expected integer value in range 1-60 for ''+zone=...'' parameter."));
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[10181] | 277 | this.lon0 = 6d * zone - 183d;
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[8609] | 278 | this.k0 = 0.9996;
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[11100] | 279 | this.x0 = 500_000;
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| 280 | this.y0 = parameters.containsKey(Param.south.key) ? 10_000_000 : 0;
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[8609] | 281 | }
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[5227] | 282 | String s = parameters.get(Param.x_0.key);
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[5072] | 283 | if (s != null) {
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[8346] | 284 | this.x0 = parseDouble(s, Param.x_0.key);
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[5072] | 285 | }
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[5227] | 286 | s = parameters.get(Param.y_0.key);
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[5072] | 287 | if (s != null) {
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[8346] | 288 | this.y0 = parseDouble(s, Param.y_0.key);
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[5072] | 289 | }
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[5227] | 290 | s = parameters.get(Param.lon_0.key);
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[5072] | 291 | if (s != null) {
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[8346] | 292 | this.lon0 = parseAngle(s, Param.lon_0.key);
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[5072] | 293 | }
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[9532] | 294 | if (proj instanceof ICentralMeridianProvider) {
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| 295 | this.lon0 = ((ICentralMeridianProvider) proj).getCentralMeridian();
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| 296 | }
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[9105] | 297 | s = parameters.get(Param.pm.key);
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| 298 | if (s != null) {
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| 299 | if (PRIME_MERIDANS.containsKey(s)) {
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| 300 | this.pm = PRIME_MERIDANS.get(s);
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| 301 | } else {
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| 302 | this.pm = parseAngle(s, Param.pm.key);
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| 303 | }
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| 304 | }
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[5227] | 305 | s = parameters.get(Param.k_0.key);
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[5072] | 306 | if (s != null) {
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[8346] | 307 | this.k0 = parseDouble(s, Param.k_0.key);
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[5072] | 308 | }
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[9565] | 309 | if (proj instanceof IScaleFactorProvider) {
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| 310 | this.k0 *= ((IScaleFactorProvider) proj).getScaleFactor();
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| 311 | }
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[5228] | 312 | s = parameters.get(Param.bounds.key);
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| 313 | if (s != null) {
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| 314 | this.bounds = parseBounds(s);
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| 315 | }
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[6854] | 316 | s = parameters.get(Param.wmssrs.key);
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| 317 | if (s != null) {
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| 318 | this.code = s;
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| 319 | }
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[9628] | 320 | boolean defaultUnits = true;
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[8568] | 321 | s = parameters.get(Param.units.key);
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| 322 | if (s != null) {
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[8611] | 323 | s = Utils.strip(s, "\"");
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| 324 | if (UNITS_TO_METERS.containsKey(s)) {
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[9790] | 325 | this.toMeter = UNITS_TO_METERS.get(s);
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| 326 | this.metersPerUnitWMTS = this.toMeter;
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[9628] | 327 | defaultUnits = false;
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[8611] | 328 | } else {
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[9790] | 329 | throw new ProjectionConfigurationException(tr("No unit found for: {0}", s));
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[8611] | 330 | }
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[8568] | 331 | }
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| 332 | s = parameters.get(Param.to_meter.key);
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| 333 | if (s != null) {
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[9790] | 334 | this.toMeter = parseDouble(s, Param.to_meter.key);
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| 335 | this.metersPerUnitWMTS = this.toMeter;
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[9628] | 336 | defaultUnits = false;
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[8568] | 337 | }
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[9628] | 338 | if (defaultUnits) {
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[9790] | 339 | this.toMeter = 1;
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| 340 | this.metersPerUnitWMTS = proj.isGeographic() ? METER_PER_UNIT_DEGREE : 1;
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[9628] | 341 | }
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[8584] | 342 | s = parameters.get(Param.axis.key);
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| 343 | if (s != null) {
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[10378] | 344 | this.axis = s;
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[8584] | 345 | }
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[5072] | 346 | }
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| 347 | }
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| 348 |
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[9128] | 349 | /**
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| 350 | * Parse a parameter list to key=value pairs.
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| 351 | *
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| 352 | * @param pref the parameter list
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| 353 | * @param ignoreUnknownParameter true, if unknown parameter should not raise exception
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| 354 | * @return parameters map
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[9135] | 355 | * @throws ProjectionConfigurationException in case of invalid parameter
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[9128] | 356 | */
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| 357 | public static Map<String, String> parseParameterList(String pref, boolean ignoreUnknownParameter) throws ProjectionConfigurationException {
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[7005] | 358 | Map<String, String> parameters = new HashMap<>();
|
---|
[11889] | 359 | String trimmedPref = pref.trim();
|
---|
| 360 | if (trimmedPref.isEmpty()) {
|
---|
[10870] | 361 | return parameters;
|
---|
[5228] | 362 | }
|
---|
[10870] | 363 |
|
---|
| 364 | Pattern keyPattern = Pattern.compile("\\+(?<key>[a-zA-Z0-9_]+)(=(?<value>.*))?");
|
---|
[11889] | 365 | String[] parts = Utils.WHITE_SPACES_PATTERN.split(trimmedPref);
|
---|
[6104] | 366 | for (String part : parts) {
|
---|
[10870] | 367 | Matcher m = keyPattern.matcher(part);
|
---|
[5228] | 368 | if (m.matches()) {
|
---|
[10870] | 369 | String key = m.group("key");
|
---|
| 370 | String value = m.group("value");
|
---|
| 371 | // some aliases
|
---|
| 372 | if (key.equals(Param.proj.key) && LON_LAT_VALUES.contains(value)) {
|
---|
| 373 | value = "lonlat";
|
---|
[5228] | 374 | }
|
---|
[10870] | 375 | Param param = Param.paramsByKey.get(key);
|
---|
| 376 | if (param == null) {
|
---|
[9128] | 377 | if (!ignoreUnknownParameter)
|
---|
| 378 | throw new ProjectionConfigurationException(tr("Unknown parameter: ''{0}''.", key));
|
---|
| 379 | } else {
|
---|
[10870] | 380 | if (param.hasValue && value == null)
|
---|
[9128] | 381 | throw new ProjectionConfigurationException(tr("Value expected for parameter ''{0}''.", key));
|
---|
[10870] | 382 | if (!param.hasValue && value != null)
|
---|
[9128] | 383 | throw new ProjectionConfigurationException(tr("No value expected for parameter ''{0}''.", key));
|
---|
[10870] | 384 | key = param.key; // To be really sure, we might have an alias.
|
---|
[9128] | 385 | }
|
---|
[5228] | 386 | parameters.put(key, value);
|
---|
[10870] | 387 | } else if (!part.startsWith("+")) {
|
---|
| 388 | throw new ProjectionConfigurationException(tr("Parameter must begin with a ''+'' character (found ''{0}'')", part));
|
---|
| 389 | } else {
|
---|
[5228] | 390 | throw new ProjectionConfigurationException(tr("Unexpected parameter format (''{0}'')", part));
|
---|
[10870] | 391 | }
|
---|
[5228] | 392 | }
|
---|
[9128] | 393 | return parameters;
|
---|
| 394 | }
|
---|
| 395 |
|
---|
| 396 | /**
|
---|
| 397 | * Recursive resolution of +init includes.
|
---|
| 398 | *
|
---|
| 399 | * @param parameters parameters map
|
---|
| 400 | * @param ignoreUnknownParameter true, if unknown parameter should not raise exception
|
---|
| 401 | * @return parameters map with +init includes resolved
|
---|
[9135] | 402 | * @throws ProjectionConfigurationException in case of invalid parameter
|
---|
[9128] | 403 | */
|
---|
[9135] | 404 | public static Map<String, String> resolveInits(Map<String, String> parameters, boolean ignoreUnknownParameter)
|
---|
| 405 | throws ProjectionConfigurationException {
|
---|
[5228] | 406 | // recursive resolution of +init includes
|
---|
| 407 | String initKey = parameters.get(Param.init.key);
|
---|
| 408 | if (initKey != null) {
|
---|
[9128] | 409 | Map<String, String> initp;
|
---|
[5228] | 410 | try {
|
---|
[11553] | 411 | initp = parseParameterList(Optional.ofNullable(Projections.getInit(initKey)).orElseThrow(
|
---|
| 412 | () -> new ProjectionConfigurationException(tr("Value ''{0}'' for option +init not supported.", initKey))),
|
---|
| 413 | ignoreUnknownParameter);
|
---|
[9128] | 414 | initp = resolveInits(initp, ignoreUnknownParameter);
|
---|
[5228] | 415 | } catch (ProjectionConfigurationException ex) {
|
---|
[9128] | 416 | throw new ProjectionConfigurationException(initKey+": "+ex.getMessage(), ex);
|
---|
[5228] | 417 | }
|
---|
[9128] | 418 | initp.putAll(parameters);
|
---|
[5228] | 419 | return initp;
|
---|
| 420 | }
|
---|
| 421 | return parameters;
|
---|
| 422 | }
|
---|
| 423 |
|
---|
[10870] | 424 | /**
|
---|
| 425 | * Gets the ellipsoid
|
---|
| 426 | * @param parameters The parameters to get the value from
|
---|
| 427 | * @return The Ellipsoid as specified with the parameters
|
---|
| 428 | * @throws ProjectionConfigurationException in case of invalid parameters
|
---|
| 429 | */
|
---|
[5072] | 430 | public Ellipsoid parseEllipsoid(Map<String, String> parameters) throws ProjectionConfigurationException {
|
---|
[5227] | 431 | String code = parameters.get(Param.ellps.key);
|
---|
[5072] | 432 | if (code != null) {
|
---|
[11553] | 433 | return Optional.ofNullable(Projections.getEllipsoid(code)).orElseThrow(
|
---|
| 434 | () -> new ProjectionConfigurationException(tr("Ellipsoid ''{0}'' not supported.", code)));
|
---|
[5072] | 435 | }
|
---|
[5227] | 436 | String s = parameters.get(Param.a.key);
|
---|
[5072] | 437 | if (s != null) {
|
---|
[5227] | 438 | double a = parseDouble(s, Param.a.key);
|
---|
| 439 | if (parameters.get(Param.es.key) != null) {
|
---|
| 440 | double es = parseDouble(parameters, Param.es.key);
|
---|
[10748] | 441 | return Ellipsoid.createAes(a, es);
|
---|
[5072] | 442 | }
|
---|
[5227] | 443 | if (parameters.get(Param.rf.key) != null) {
|
---|
| 444 | double rf = parseDouble(parameters, Param.rf.key);
|
---|
[10748] | 445 | return Ellipsoid.createArf(a, rf);
|
---|
[5072] | 446 | }
|
---|
[5227] | 447 | if (parameters.get(Param.f.key) != null) {
|
---|
| 448 | double f = parseDouble(parameters, Param.f.key);
|
---|
[10748] | 449 | return Ellipsoid.createAf(a, f);
|
---|
[5072] | 450 | }
|
---|
[5227] | 451 | if (parameters.get(Param.b.key) != null) {
|
---|
| 452 | double b = parseDouble(parameters, Param.b.key);
|
---|
[10748] | 453 | return Ellipsoid.createAb(a, b);
|
---|
[5072] | 454 | }
|
---|
| 455 | }
|
---|
[5227] | 456 | if (parameters.containsKey(Param.a.key) ||
|
---|
| 457 | parameters.containsKey(Param.es.key) ||
|
---|
| 458 | parameters.containsKey(Param.rf.key) ||
|
---|
| 459 | parameters.containsKey(Param.f.key) ||
|
---|
| 460 | parameters.containsKey(Param.b.key))
|
---|
[5072] | 461 | throw new ProjectionConfigurationException(tr("Combination of ellipsoid parameters is not supported."));
|
---|
[8610] | 462 | return null;
|
---|
[5072] | 463 | }
|
---|
| 464 |
|
---|
[10870] | 465 | /**
|
---|
| 466 | * Gets the datum
|
---|
| 467 | * @param parameters The parameters to get the value from
|
---|
| 468 | * @param ellps The ellisoid that was previously computed
|
---|
| 469 | * @return The Datum as specified with the parameters
|
---|
| 470 | * @throws ProjectionConfigurationException in case of invalid parameters
|
---|
| 471 | */
|
---|
[5072] | 472 | public Datum parseDatum(Map<String, String> parameters, Ellipsoid ellps) throws ProjectionConfigurationException {
|
---|
[8610] | 473 | String datumId = parameters.get(Param.datum.key);
|
---|
| 474 | if (datumId != null) {
|
---|
[11553] | 475 | return Optional.ofNullable(Projections.getDatum(datumId)).orElseThrow(
|
---|
| 476 | () -> new ProjectionConfigurationException(tr("Unknown datum identifier: ''{0}''", datumId)));
|
---|
[8610] | 477 | }
|
---|
| 478 | if (ellps == null) {
|
---|
| 479 | if (parameters.containsKey(Param.no_defs.key))
|
---|
| 480 | throw new ProjectionConfigurationException(tr("Ellipsoid required (+ellps=* or +a=*, +b=*)"));
|
---|
| 481 | // nothing specified, use WGS84 as default
|
---|
| 482 | ellps = Ellipsoid.WGS84;
|
---|
| 483 | }
|
---|
[8611] | 484 |
|
---|
[5227] | 485 | String nadgridsId = parameters.get(Param.nadgrids.key);
|
---|
[5226] | 486 | if (nadgridsId != null) {
|
---|
[5237] | 487 | if (nadgridsId.startsWith("@")) {
|
---|
| 488 | nadgridsId = nadgridsId.substring(1);
|
---|
| 489 | }
|
---|
[6990] | 490 | if ("null".equals(nadgridsId))
|
---|
[5237] | 491 | return new NullDatum(null, ellps);
|
---|
[11553] | 492 | final String fNadgridsId = nadgridsId;
|
---|
| 493 | return new NTV2Datum(fNadgridsId, null, ellps, Optional.ofNullable(Projections.getNTV2Grid(fNadgridsId)).orElseThrow(
|
---|
| 494 | () -> new ProjectionConfigurationException(tr("Grid shift file ''{0}'' for option +nadgrids not supported.", fNadgridsId))));
|
---|
[5226] | 495 | }
|
---|
| 496 |
|
---|
[5227] | 497 | String towgs84 = parameters.get(Param.towgs84.key);
|
---|
[5072] | 498 | if (towgs84 != null)
|
---|
| 499 | return parseToWGS84(towgs84, ellps);
|
---|
| 500 |
|
---|
[9106] | 501 | return new NullDatum(null, ellps);
|
---|
[5072] | 502 | }
|
---|
| 503 |
|
---|
[11889] | 504 | /**
|
---|
| 505 | * Parse {@code towgs84} parameter.
|
---|
| 506 | * @param paramList List of parameter arguments (expected: 3 or 7)
|
---|
| 507 | * @param ellps ellipsoid
|
---|
| 508 | * @return parsed datum ({@link ThreeParameterDatum} or {@link SevenParameterDatum})
|
---|
| 509 | * @throws ProjectionConfigurationException if the arguments cannot be parsed
|
---|
| 510 | */
|
---|
[5072] | 511 | public Datum parseToWGS84(String paramList, Ellipsoid ellps) throws ProjectionConfigurationException {
|
---|
| 512 | String[] numStr = paramList.split(",");
|
---|
| 513 |
|
---|
| 514 | if (numStr.length != 3 && numStr.length != 7)
|
---|
| 515 | throw new ProjectionConfigurationException(tr("Unexpected number of arguments for parameter ''towgs84'' (must be 3 or 7)"));
|
---|
[7005] | 516 | List<Double> towgs84Param = new ArrayList<>();
|
---|
[6104] | 517 | for (String str : numStr) {
|
---|
[5072] | 518 | try {
|
---|
[8390] | 519 | towgs84Param.add(Double.valueOf(str));
|
---|
[5072] | 520 | } catch (NumberFormatException e) {
|
---|
[6798] | 521 | throw new ProjectionConfigurationException(tr("Unable to parse value of parameter ''towgs84'' (''{0}'')", str), e);
|
---|
[5072] | 522 | }
|
---|
| 523 | }
|
---|
[5237] | 524 | boolean isCentric = true;
|
---|
[6104] | 525 | for (Double param : towgs84Param) {
|
---|
[8393] | 526 | if (param != 0) {
|
---|
[5237] | 527 | isCentric = false;
|
---|
| 528 | break;
|
---|
| 529 | }
|
---|
| 530 | }
|
---|
| 531 | if (isCentric)
|
---|
| 532 | return new CentricDatum(null, null, ellps);
|
---|
[5072] | 533 | boolean is3Param = true;
|
---|
[8510] | 534 | for (int i = 3; i < towgs84Param.size(); i++) {
|
---|
[8393] | 535 | if (towgs84Param.get(i) != 0) {
|
---|
[5072] | 536 | is3Param = false;
|
---|
| 537 | break;
|
---|
| 538 | }
|
---|
| 539 | }
|
---|
[5237] | 540 | if (is3Param)
|
---|
| 541 | return new ThreeParameterDatum(null, null, ellps,
|
---|
[5072] | 542 | towgs84Param.get(0),
|
---|
| 543 | towgs84Param.get(1),
|
---|
[5237] | 544 | towgs84Param.get(2));
|
---|
| 545 | else
|
---|
| 546 | return new SevenParameterDatum(null, null, ellps,
|
---|
[5072] | 547 | towgs84Param.get(0),
|
---|
| 548 | towgs84Param.get(1),
|
---|
| 549 | towgs84Param.get(2),
|
---|
| 550 | towgs84Param.get(3),
|
---|
| 551 | towgs84Param.get(4),
|
---|
| 552 | towgs84Param.get(5),
|
---|
[5237] | 553 | towgs84Param.get(6));
|
---|
[5072] | 554 | }
|
---|
| 555 |
|
---|
[10870] | 556 | /**
|
---|
| 557 | * Gets a projection using the given ellipsoid
|
---|
| 558 | * @param parameters Additional parameters
|
---|
| 559 | * @param ellps The {@link Ellipsoid}
|
---|
| 560 | * @return The projection
|
---|
| 561 | * @throws ProjectionConfigurationException in case of invalid parameters
|
---|
| 562 | */
|
---|
[5072] | 563 | public Proj parseProjection(Map<String, String> parameters, Ellipsoid ellps) throws ProjectionConfigurationException {
|
---|
[6142] | 564 | String id = parameters.get(Param.proj.key);
|
---|
[5072] | 565 | if (id == null) throw new ProjectionConfigurationException(tr("Projection required (+proj=*)"));
|
---|
| 566 |
|
---|
[8609] | 567 | // "utm" is not a real projection, but a shortcut for a set of parameters
|
---|
| 568 | if ("utm".equals(id)) {
|
---|
| 569 | id = "tmerc";
|
---|
| 570 | }
|
---|
[10378] | 571 | Proj proj = Projections.getBaseProjection(id);
|
---|
[7184] | 572 | if (proj == null) throw new ProjectionConfigurationException(tr("Unknown projection identifier: ''{0}''", id));
|
---|
[5072] | 573 |
|
---|
| 574 | ProjParameters projParams = new ProjParameters();
|
---|
| 575 |
|
---|
| 576 | projParams.ellps = ellps;
|
---|
| 577 |
|
---|
| 578 | String s;
|
---|
[5227] | 579 | s = parameters.get(Param.lat_0.key);
|
---|
[5072] | 580 | if (s != null) {
|
---|
[8346] | 581 | projParams.lat0 = parseAngle(s, Param.lat_0.key);
|
---|
[5072] | 582 | }
|
---|
[5227] | 583 | s = parameters.get(Param.lat_1.key);
|
---|
[5072] | 584 | if (s != null) {
|
---|
[8346] | 585 | projParams.lat1 = parseAngle(s, Param.lat_1.key);
|
---|
[5072] | 586 | }
|
---|
[5227] | 587 | s = parameters.get(Param.lat_2.key);
|
---|
[5072] | 588 | if (s != null) {
|
---|
[8346] | 589 | projParams.lat2 = parseAngle(s, Param.lat_2.key);
|
---|
[5072] | 590 | }
|
---|
[9419] | 591 | s = parameters.get(Param.lat_ts.key);
|
---|
| 592 | if (s != null) {
|
---|
| 593 | projParams.lat_ts = parseAngle(s, Param.lat_ts.key);
|
---|
| 594 | }
|
---|
[9532] | 595 | s = parameters.get(Param.lonc.key);
|
---|
| 596 | if (s != null) {
|
---|
| 597 | projParams.lonc = parseAngle(s, Param.lonc.key);
|
---|
| 598 | }
|
---|
| 599 | s = parameters.get(Param.alpha.key);
|
---|
| 600 | if (s != null) {
|
---|
| 601 | projParams.alpha = parseAngle(s, Param.alpha.key);
|
---|
| 602 | }
|
---|
| 603 | s = parameters.get(Param.gamma.key);
|
---|
| 604 | if (s != null) {
|
---|
| 605 | projParams.gamma = parseAngle(s, Param.gamma.key);
|
---|
| 606 | }
|
---|
| 607 | s = parameters.get(Param.lon_1.key);
|
---|
| 608 | if (s != null) {
|
---|
| 609 | projParams.lon1 = parseAngle(s, Param.lon_1.key);
|
---|
| 610 | }
|
---|
| 611 | s = parameters.get(Param.lon_2.key);
|
---|
| 612 | if (s != null) {
|
---|
| 613 | projParams.lon2 = parseAngle(s, Param.lon_2.key);
|
---|
| 614 | }
|
---|
| 615 | if (parameters.containsKey(Param.no_off.key) || parameters.containsKey(Param.no_uoff.key)) {
|
---|
[10000] | 616 | projParams.no_off = Boolean.TRUE;
|
---|
[9532] | 617 | }
|
---|
[5072] | 618 | proj.initialize(projParams);
|
---|
| 619 | return proj;
|
---|
[5228] | 620 | }
|
---|
[5072] | 621 |
|
---|
[10870] | 622 | /**
|
---|
| 623 | * Converts a string to a bounds object
|
---|
| 624 | * @param boundsStr The string as comma separated list of angles.
|
---|
| 625 | * @return The bounds.
|
---|
| 626 | * @throws ProjectionConfigurationException in case of invalid parameter
|
---|
[10871] | 627 | * @see CustomProjection#parseAngle(String, String)
|
---|
[10870] | 628 | */
|
---|
[5279] | 629 | public static Bounds parseBounds(String boundsStr) throws ProjectionConfigurationException {
|
---|
[5228] | 630 | String[] numStr = boundsStr.split(",");
|
---|
| 631 | if (numStr.length != 4)
|
---|
| 632 | throw new ProjectionConfigurationException(tr("Unexpected number of arguments for parameter ''+bounds'' (must be 4)"));
|
---|
| 633 | return new Bounds(parseAngle(numStr[1], "minlat (+bounds)"),
|
---|
| 634 | parseAngle(numStr[0], "minlon (+bounds)"),
|
---|
| 635 | parseAngle(numStr[3], "maxlat (+bounds)"),
|
---|
[5235] | 636 | parseAngle(numStr[2], "maxlon (+bounds)"), false);
|
---|
[5072] | 637 | }
|
---|
| 638 |
|
---|
[5279] | 639 | public static double parseDouble(Map<String, String> parameters, String parameterName) throws ProjectionConfigurationException {
|
---|
[5889] | 640 | if (!parameters.containsKey(parameterName))
|
---|
[8609] | 641 | throw new ProjectionConfigurationException(tr("Unknown parameter ''{0}''", parameterName));
|
---|
[11553] | 642 | return parseDouble(Optional.ofNullable(parameters.get(parameterName)).orElseThrow(
|
---|
| 643 | () -> new ProjectionConfigurationException(tr("Expected number argument for parameter ''{0}''", parameterName))),
|
---|
| 644 | parameterName);
|
---|
[5072] | 645 | }
|
---|
| 646 |
|
---|
[5279] | 647 | public static double parseDouble(String doubleStr, String parameterName) throws ProjectionConfigurationException {
|
---|
[5072] | 648 | try {
|
---|
| 649 | return Double.parseDouble(doubleStr);
|
---|
| 650 | } catch (NumberFormatException e) {
|
---|
| 651 | throw new ProjectionConfigurationException(
|
---|
[6798] | 652 | tr("Unable to parse value ''{1}'' of parameter ''{0}'' as number.", parameterName, doubleStr), e);
|
---|
[5072] | 653 | }
|
---|
| 654 | }
|
---|
| 655 |
|
---|
[10870] | 656 | /**
|
---|
| 657 | * Convert an angle string to a double value
|
---|
[12792] | 658 | * @param angleStr The string. e.g. -1.1 or 50d10'3"
|
---|
[10870] | 659 | * @param parameterName Only for error message.
|
---|
| 660 | * @return The angle value, in degrees.
|
---|
| 661 | * @throws ProjectionConfigurationException in case of invalid parameter
|
---|
| 662 | */
|
---|
[5279] | 663 | public static double parseAngle(String angleStr, String parameterName) throws ProjectionConfigurationException {
|
---|
[12792] | 664 | try {
|
---|
| 665 | return LatLonParser.parseCoordinate(angleStr);
|
---|
| 666 | } catch (IllegalArgumentException e) {
|
---|
[10870] | 667 | throw new ProjectionConfigurationException(
|
---|
| 668 | tr("Unable to parse value ''{1}'' of parameter ''{0}'' as coordinate value.", parameterName, angleStr));
|
---|
[5072] | 669 | }
|
---|
| 670 | }
|
---|
| 671 |
|
---|
| 672 | @Override
|
---|
| 673 | public Integer getEpsgCode() {
|
---|
[5548] | 674 | if (code != null && code.startsWith("EPSG:")) {
|
---|
| 675 | try {
|
---|
[8390] | 676 | return Integer.valueOf(code.substring(5));
|
---|
[6310] | 677 | } catch (NumberFormatException e) {
|
---|
[12620] | 678 | Logging.warn(e);
|
---|
[6310] | 679 | }
|
---|
[5548] | 680 | }
|
---|
[5072] | 681 | return null;
|
---|
| 682 | }
|
---|
| 683 |
|
---|
| 684 | @Override
|
---|
| 685 | public String toCode() {
|
---|
[10870] | 686 | if (code != null) {
|
---|
| 687 | return code;
|
---|
| 688 | } else if (pref != null) {
|
---|
| 689 | return "proj:" + pref;
|
---|
| 690 | } else {
|
---|
| 691 | return "proj:ERROR";
|
---|
| 692 | }
|
---|
[5072] | 693 | }
|
---|
| 694 |
|
---|
[12236] | 695 | /**
|
---|
| 696 | * {@inheritDoc}
|
---|
[12293] | 697 | * @deprecated unused - remove in 2017-09
|
---|
[12236] | 698 | */
|
---|
[5072] | 699 | @Override
|
---|
[12233] | 700 | @Deprecated
|
---|
[5072] | 701 | public String getCacheDirectoryName() {
|
---|
[10870] | 702 | if (cacheDir != null) {
|
---|
| 703 | return cacheDir;
|
---|
| 704 | } else {
|
---|
| 705 | return "proj-" + Utils.md5Hex(pref == null ? "" : pref).substring(0, 4);
|
---|
| 706 | }
|
---|
[5072] | 707 | }
|
---|
| 708 |
|
---|
| 709 | @Override
|
---|
| 710 | public Bounds getWorldBoundsLatLon() {
|
---|
[10870] | 711 | if (bounds == null) {
|
---|
| 712 | Bounds ab = proj.getAlgorithmBounds();
|
---|
| 713 | if (ab != null) {
|
---|
| 714 | double minlon = Math.max(ab.getMinLon() + lon0 + pm, -180);
|
---|
| 715 | double maxlon = Math.min(ab.getMaxLon() + lon0 + pm, 180);
|
---|
| 716 | bounds = new Bounds(ab.getMinLat(), minlon, ab.getMaxLat(), maxlon, false);
|
---|
| 717 | } else {
|
---|
| 718 | bounds = new Bounds(
|
---|
| 719 | new LatLon(-90.0, -180.0),
|
---|
| 720 | new LatLon(90.0, 180.0));
|
---|
| 721 | }
|
---|
[9124] | 722 | }
|
---|
[10870] | 723 | return bounds;
|
---|
[5072] | 724 | }
|
---|
| 725 |
|
---|
| 726 | @Override
|
---|
| 727 | public String toString() {
|
---|
[5548] | 728 | return name != null ? name : tr("Custom Projection");
|
---|
[5072] | 729 | }
|
---|
[8568] | 730 |
|
---|
[9790] | 731 | /**
|
---|
| 732 | * Factor to convert units of east/north coordinates to meters.
|
---|
[10000] | 733 | *
|
---|
[9790] | 734 | * When east/north coordinates are in degrees (geographic CRS), the scale
|
---|
| 735 | * at the equator is taken, i.e. 360 degrees corresponds to the length of
|
---|
| 736 | * the equator in meters.
|
---|
[10000] | 737 | *
|
---|
[9790] | 738 | * @return factor to convert units to meter
|
---|
| 739 | */
|
---|
[8568] | 740 | @Override
|
---|
| 741 | public double getMetersPerUnit() {
|
---|
[9790] | 742 | return metersPerUnitWMTS;
|
---|
[8568] | 743 | }
|
---|
[9631] | 744 |
|
---|
[8584] | 745 | @Override
|
---|
| 746 | public boolean switchXY() {
|
---|
| 747 | // TODO: support for other axis orientation such as West South, and Up Down
|
---|
| 748 | return this.axis.startsWith("ne");
|
---|
| 749 | }
|
---|
| 750 |
|
---|
[8568] | 751 | private static Map<String, Double> getUnitsToMeters() {
|
---|
| 752 | Map<String, Double> ret = new ConcurrentHashMap<>();
|
---|
| 753 | ret.put("km", 1000d);
|
---|
| 754 | ret.put("m", 1d);
|
---|
| 755 | ret.put("dm", 1d/10);
|
---|
| 756 | ret.put("cm", 1d/100);
|
---|
| 757 | ret.put("mm", 1d/1000);
|
---|
| 758 | ret.put("kmi", 1852.0);
|
---|
| 759 | ret.put("in", 0.0254);
|
---|
| 760 | ret.put("ft", 0.3048);
|
---|
| 761 | ret.put("yd", 0.9144);
|
---|
| 762 | ret.put("mi", 1609.344);
|
---|
| 763 | ret.put("fathom", 1.8288);
|
---|
| 764 | ret.put("chain", 20.1168);
|
---|
| 765 | ret.put("link", 0.201168);
|
---|
| 766 | ret.put("us-in", 1d/39.37);
|
---|
| 767 | ret.put("us-ft", 0.304800609601219);
|
---|
| 768 | ret.put("us-yd", 0.914401828803658);
|
---|
| 769 | ret.put("us-ch", 20.11684023368047);
|
---|
| 770 | ret.put("us-mi", 1609.347218694437);
|
---|
| 771 | ret.put("ind-yd", 0.91439523);
|
---|
| 772 | ret.put("ind-ft", 0.30479841);
|
---|
| 773 | ret.put("ind-ch", 20.11669506);
|
---|
| 774 | ret.put("degree", METER_PER_UNIT_DEGREE);
|
---|
| 775 | return ret;
|
---|
| 776 | }
|
---|
[9105] | 777 |
|
---|
| 778 | private static Map<String, Double> getPrimeMeridians() {
|
---|
| 779 | Map<String, Double> ret = new ConcurrentHashMap<>();
|
---|
| 780 | try {
|
---|
| 781 | ret.put("greenwich", 0.0);
|
---|
| 782 | ret.put("lisbon", parseAngle("9d07'54.862\"W", null));
|
---|
| 783 | ret.put("paris", parseAngle("2d20'14.025\"E", null));
|
---|
| 784 | ret.put("bogota", parseAngle("74d04'51.3\"W", null));
|
---|
| 785 | ret.put("madrid", parseAngle("3d41'16.58\"W", null));
|
---|
| 786 | ret.put("rome", parseAngle("12d27'8.4\"E", null));
|
---|
| 787 | ret.put("bern", parseAngle("7d26'22.5\"E", null));
|
---|
| 788 | ret.put("jakarta", parseAngle("106d48'27.79\"E", null));
|
---|
| 789 | ret.put("ferro", parseAngle("17d40'W", null));
|
---|
| 790 | ret.put("brussels", parseAngle("4d22'4.71\"E", null));
|
---|
| 791 | ret.put("stockholm", parseAngle("18d3'29.8\"E", null));
|
---|
| 792 | ret.put("athens", parseAngle("23d42'58.815\"E", null));
|
---|
| 793 | ret.put("oslo", parseAngle("10d43'22.5\"E", null));
|
---|
| 794 | } catch (ProjectionConfigurationException ex) {
|
---|
[10235] | 795 | throw new IllegalStateException(ex);
|
---|
[9105] | 796 | }
|
---|
| 797 | return ret;
|
---|
| 798 | }
|
---|
[9419] | 799 |
|
---|
[10001] | 800 | private static EastNorth getPointAlong(int i, int n, ProjectionBounds r) {
|
---|
| 801 | double dEast = (r.maxEast - r.minEast) / n;
|
---|
| 802 | double dNorth = (r.maxNorth - r.minNorth) / n;
|
---|
| 803 | if (i < n) {
|
---|
[9431] | 804 | return new EastNorth(r.minEast + i * dEast, r.minNorth);
|
---|
[10001] | 805 | } else if (i < 2*n) {
|
---|
| 806 | i -= n;
|
---|
[9431] | 807 | return new EastNorth(r.maxEast, r.minNorth + i * dNorth);
|
---|
[10001] | 808 | } else if (i < 3*n) {
|
---|
| 809 | i -= 2*n;
|
---|
[9431] | 810 | return new EastNorth(r.maxEast - i * dEast, r.maxNorth);
|
---|
[10001] | 811 | } else if (i < 4*n) {
|
---|
| 812 | i -= 3*n;
|
---|
[9431] | 813 | return new EastNorth(r.minEast, r.maxNorth - i * dNorth);
|
---|
| 814 | } else {
|
---|
| 815 | throw new AssertionError();
|
---|
| 816 | }
|
---|
| 817 | }
|
---|
| 818 |
|
---|
[9559] | 819 | private EastNorth getPole(Polarity whichPole) {
|
---|
| 820 | if (polesEN == null) {
|
---|
| 821 | polesEN = new EnumMap<>(Polarity.class);
|
---|
| 822 | for (Polarity p : Polarity.values()) {
|
---|
| 823 | polesEN.put(p, null);
|
---|
[10870] | 824 | LatLon ll = p.getLatLon();
|
---|
[9559] | 825 | try {
|
---|
| 826 | EastNorth enPole = latlon2eastNorth(ll);
|
---|
| 827 | if (enPole.isValid()) {
|
---|
| 828 | // project back and check if the result is somewhat reasonable
|
---|
| 829 | LatLon llBack = eastNorth2latlon(enPole);
|
---|
| 830 | if (llBack.isValid() && ll.greatCircleDistance(llBack) < 1000) {
|
---|
| 831 | polesEN.put(p, enPole);
|
---|
| 832 | }
|
---|
| 833 | }
|
---|
[11746] | 834 | } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
|
---|
[12620] | 835 | Logging.error(e);
|
---|
[9562] | 836 | }
|
---|
[9559] | 837 | }
|
---|
| 838 | }
|
---|
| 839 | return polesEN.get(whichPole);
|
---|
| 840 | }
|
---|
| 841 |
|
---|
[9419] | 842 | @Override
|
---|
| 843 | public Bounds getLatLonBoundsBox(ProjectionBounds r) {
|
---|
[10001] | 844 | final int n = 10;
|
---|
[9419] | 845 | Bounds result = new Bounds(eastNorth2latlon(r.getMin()));
|
---|
| 846 | result.extend(eastNorth2latlon(r.getMax()));
|
---|
[9431] | 847 | LatLon llPrev = null;
|
---|
[10001] | 848 | for (int i = 0; i < 4*n; i++) {
|
---|
| 849 | LatLon llNow = eastNorth2latlon(getPointAlong(i, n, r));
|
---|
[9431] | 850 | result.extend(llNow);
|
---|
| 851 | // check if segment crosses 180th meridian and if so, make sure
|
---|
| 852 | // to extend bounds to +/-180 degrees longitude
|
---|
| 853 | if (llPrev != null) {
|
---|
| 854 | double lon1 = llPrev.lon();
|
---|
| 855 | double lon2 = llNow.lon();
|
---|
| 856 | if (90 < lon1 && lon1 < 180 && -180 < lon2 && lon2 < -90) {
|
---|
| 857 | result.extend(new LatLon(llPrev.lat(), 180));
|
---|
| 858 | result.extend(new LatLon(llNow.lat(), -180));
|
---|
| 859 | }
|
---|
| 860 | if (90 < lon2 && lon2 < 180 && -180 < lon1 && lon1 < -90) {
|
---|
| 861 | result.extend(new LatLon(llNow.lat(), 180));
|
---|
| 862 | result.extend(new LatLon(llPrev.lat(), -180));
|
---|
| 863 | }
|
---|
| 864 | }
|
---|
| 865 | llPrev = llNow;
|
---|
[9419] | 866 | }
|
---|
| 867 | // if the box contains one of the poles, the above method did not get
|
---|
| 868 | // correct min/max latitude value
|
---|
[9559] | 869 | for (Polarity p : Polarity.values()) {
|
---|
| 870 | EastNorth pole = getPole(p);
|
---|
| 871 | if (pole != null && r.contains(pole)) {
|
---|
[10870] | 872 | result.extend(p.getLatLon());
|
---|
[9419] | 873 | }
|
---|
| 874 | }
|
---|
| 875 | return result;
|
---|
| 876 | }
|
---|
[11858] | 877 |
|
---|
| 878 | @Override
|
---|
| 879 | public ProjectionBounds getEastNorthBoundsBox(ProjectionBounds box, Projection boxProjection) {
|
---|
| 880 | final int n = 8;
|
---|
| 881 | ProjectionBounds result = null;
|
---|
| 882 | for (int i = 0; i < 4*n; i++) {
|
---|
| 883 | EastNorth en = latlon2eastNorth(boxProjection.eastNorth2latlon(getPointAlong(i, n, box)));
|
---|
| 884 | if (result == null) {
|
---|
| 885 | result = new ProjectionBounds(en);
|
---|
| 886 | } else {
|
---|
| 887 | result.extend(en);
|
---|
| 888 | }
|
---|
| 889 | }
|
---|
| 890 | return result;
|
---|
| 891 | }
|
---|
[12792] | 892 |
|
---|
| 893 | /**
|
---|
| 894 | * Return true, if a geographic coordinate reference system is represented.
|
---|
| 895 | *
|
---|
| 896 | * I.e. if it returns latitude/longitude values rather than Cartesian
|
---|
| 897 | * east/north coordinates on a flat surface.
|
---|
| 898 | * @return true, if it is geographic
|
---|
| 899 | * @since 12792
|
---|
| 900 | */
|
---|
| 901 | public boolean isGeographic() {
|
---|
| 902 | return proj.isGeographic();
|
---|
| 903 | }
|
---|
| 904 |
|
---|
[5072] | 905 | }
|
---|