source: josm/trunk/src/org/openstreetmap/josm/data/projection/CustomProjection.java@ 13250

Last change on this file since 13250 was 13182, checked in by Don-vip, 6 years ago

see #15310 - cacheDir is unused, deprecate new methods
  • Property svn:eol-style set to native
File size: 34.6 KB
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1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.data.projection;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.util.ArrayList;
7import java.util.Arrays;
8import java.util.EnumMap;
9import java.util.HashMap;
10import java.util.List;
11import java.util.Map;
12import java.util.Optional;
13import java.util.concurrent.ConcurrentHashMap;
14import java.util.regex.Matcher;
15import java.util.regex.Pattern;
16
17import org.openstreetmap.josm.data.Bounds;
18import org.openstreetmap.josm.data.ProjectionBounds;
19import org.openstreetmap.josm.data.coor.EastNorth;
20import org.openstreetmap.josm.data.coor.LatLon;
21import org.openstreetmap.josm.data.coor.conversion.LatLonParser;
22import org.openstreetmap.josm.data.projection.datum.CentricDatum;
23import org.openstreetmap.josm.data.projection.datum.Datum;
24import org.openstreetmap.josm.data.projection.datum.NTV2Datum;
25import org.openstreetmap.josm.data.projection.datum.NullDatum;
26import org.openstreetmap.josm.data.projection.datum.SevenParameterDatum;
27import org.openstreetmap.josm.data.projection.datum.ThreeParameterDatum;
28import org.openstreetmap.josm.data.projection.datum.WGS84Datum;
29import org.openstreetmap.josm.data.projection.proj.ICentralMeridianProvider;
30import org.openstreetmap.josm.data.projection.proj.IScaleFactorProvider;
31import org.openstreetmap.josm.data.projection.proj.Mercator;
32import org.openstreetmap.josm.data.projection.proj.Proj;
33import org.openstreetmap.josm.data.projection.proj.ProjParameters;
34import org.openstreetmap.josm.tools.JosmRuntimeException;
35import org.openstreetmap.josm.tools.Logging;
36import org.openstreetmap.josm.tools.Utils;
37import org.openstreetmap.josm.tools.bugreport.BugReport;
38
39/**
40 * Custom projection.
41 *
42 * Inspired by PROJ.4 and Proj4J.
43 * @since 5072
44 */
45public class CustomProjection extends AbstractProjection {
46
47 /*
48 * Equation for METER_PER_UNIT_DEGREE taken from:
49 * https://github.com/openlayers/ol3/blob/master/src/ol/proj/epsg4326projection.js#L58
50 * Value for Radius taken form:
51 * https://github.com/openlayers/ol3/blob/master/src/ol/sphere/wgs84sphere.js#L11
52 */
53 private static final double METER_PER_UNIT_DEGREE = 2 * Math.PI * 6378137.0 / 360;
54 private static final Map<String, Double> UNITS_TO_METERS = getUnitsToMeters();
55 private static final Map<String, Double> PRIME_MERIDANS = getPrimeMeridians();
56
57 /**
58 * pref String that defines the projection
59 *
60 * null means fall back mode (Mercator)
61 */
62 protected String pref;
63 protected String name;
64 protected String code;
65 protected Bounds bounds;
66 private double metersPerUnitWMTS;
67 private String axis = "enu"; // default axis orientation is East, North, Up
68
69 private static final List<String> LON_LAT_VALUES = Arrays.asList("longlat", "latlon", "latlong");
70
71 /**
72 * Proj4-like projection parameters. See <a href="https://trac.osgeo.org/proj/wiki/GenParms">reference</a>.
73 * @since 7370 (public)
74 */
75 public enum Param {
76
77 /** False easting */
78 x_0("x_0", true),
79 /** False northing */
80 y_0("y_0", true),
81 /** Central meridian */
82 lon_0("lon_0", true),
83 /** Prime meridian */
84 pm("pm", true),
85 /** Scaling factor */
86 k_0("k_0", true),
87 /** Ellipsoid name (see {@code proj -le}) */
88 ellps("ellps", true),
89 /** Semimajor radius of the ellipsoid axis */
90 a("a", true),
91 /** Eccentricity of the ellipsoid squared */
92 es("es", true),
93 /** Reciprocal of the ellipsoid flattening term (e.g. 298) */
94 rf("rf", true),
95 /** Flattening of the ellipsoid = 1-sqrt(1-e^2) */
96 f("f", true),
97 /** Semiminor radius of the ellipsoid axis */
98 b("b", true),
99 /** Datum name (see {@code proj -ld}) */
100 datum("datum", true),
101 /** 3 or 7 term datum transform parameters */
102 towgs84("towgs84", true),
103 /** Filename of NTv2 grid file to use for datum transforms */
104 nadgrids("nadgrids", true),
105 /** Projection name (see {@code proj -l}) */
106 proj("proj", true),
107 /** Latitude of origin */
108 lat_0("lat_0", true),
109 /** Latitude of first standard parallel */
110 lat_1("lat_1", true),
111 /** Latitude of second standard parallel */
112 lat_2("lat_2", true),
113 /** Latitude of true scale (Polar Stereographic) */
114 lat_ts("lat_ts", true),
115 /** longitude of the center of the projection (Oblique Mercator) */
116 lonc("lonc", true),
117 /** azimuth (true) of the center line passing through the center of the
118 * projection (Oblique Mercator) */
119 alpha("alpha", true),
120 /** rectified bearing of the center line (Oblique Mercator) */
121 gamma("gamma", true),
122 /** select "Hotine" variant of Oblique Mercator */
123 no_off("no_off", false),
124 /** legacy alias for no_off */
125 no_uoff("no_uoff", false),
126 /** longitude of first point (Oblique Mercator) */
127 lon_1("lon_1", true),
128 /** longitude of second point (Oblique Mercator) */
129 lon_2("lon_2", true),
130 /** the exact proj.4 string will be preserved in the WKT representation */
131 wktext("wktext", false), // ignored
132 /** meters, US survey feet, etc. */
133 units("units", true),
134 /** Don't use the /usr/share/proj/proj_def.dat defaults file */
135 no_defs("no_defs", false),
136 init("init", true),
137 /** crs units to meter multiplier */
138 to_meter("to_meter", true),
139 /** definition of axis for projection */
140 axis("axis", true),
141 /** UTM zone */
142 zone("zone", true),
143 /** indicate southern hemisphere for UTM */
144 south("south", false),
145 /** vertical units - ignore, as we don't use height information */
146 vunits("vunits", true),
147 // JOSM extensions, not present in PROJ.4
148 wmssrs("wmssrs", true),
149 bounds("bounds", true);
150
151 /** Parameter key */
152 public final String key;
153 /** {@code true} if the parameter has a value */
154 public final boolean hasValue;
155
156 /** Map of all parameters by key */
157 static final Map<String, Param> paramsByKey = new ConcurrentHashMap<>();
158 static {
159 for (Param p : Param.values()) {
160 paramsByKey.put(p.key, p);
161 }
162 // alias
163 paramsByKey.put("k", Param.k_0);
164 }
165
166 Param(String key, boolean hasValue) {
167 this.key = key;
168 this.hasValue = hasValue;
169 }
170 }
171
172 enum Polarity {
173 NORTH(LatLon.NORTH_POLE),
174 SOUTH(LatLon.SOUTH_POLE);
175
176 private final LatLon latlon;
177
178 Polarity(LatLon latlon) {
179 this.latlon = latlon;
180 }
181
182 LatLon getLatLon() {
183 return latlon;
184 }
185 }
186
187 private EnumMap<Polarity, EastNorth> polesEN;
188
189 /**
190 * Constructs a new empty {@code CustomProjection}.
191 */
192 public CustomProjection() {
193 // contents can be set later with update()
194 }
195
196 /**
197 * Constructs a new {@code CustomProjection} with given parameters.
198 * @param pref String containing projection parameters
199 * (ex: "+proj=tmerc +lon_0=-3 +k_0=0.9996 +x_0=500000 +ellps=WGS84 +datum=WGS84 +bounds=-8,-5,2,85")
200 */
201 public CustomProjection(String pref) {
202 this(null, null, pref);
203 }
204
205 /**
206 * Constructs a new {@code CustomProjection} with given name, code and parameters.
207 *
208 * @param name describe projection in one or two words
209 * @param code unique code for this projection - may be null
210 * @param pref the string that defines the custom projection
211 */
212 public CustomProjection(String name, String code, String pref) {
213 this.name = name;
214 this.code = code;
215 this.pref = pref;
216 try {
217 update(pref);
218 } catch (ProjectionConfigurationException ex) {
219 Logging.trace(ex);
220 try {
221 update(null);
222 } catch (ProjectionConfigurationException ex1) {
223 throw BugReport.intercept(ex1).put("name", name).put("code", code).put("pref", pref);
224 }
225 }
226 }
227
228 /**
229 * Updates this {@code CustomProjection} with given parameters.
230 * @param pref String containing projection parameters (ex: "+proj=lonlat +ellps=WGS84 +datum=WGS84 +bounds=-180,-90,180,90")
231 * @throws ProjectionConfigurationException if {@code pref} cannot be parsed properly
232 */
233 public final void update(String pref) throws ProjectionConfigurationException {
234 this.pref = pref;
235 if (pref == null) {
236 ellps = Ellipsoid.WGS84;
237 datum = WGS84Datum.INSTANCE;
238 proj = new Mercator();
239 bounds = new Bounds(
240 -85.05112877980659, -180.0,
241 85.05112877980659, 180.0, true);
242 } else {
243 Map<String, String> parameters = parseParameterList(pref, false);
244 parameters = resolveInits(parameters, false);
245 ellps = parseEllipsoid(parameters);
246 datum = parseDatum(parameters, ellps);
247 if (ellps == null) {
248 ellps = datum.getEllipsoid();
249 }
250 proj = parseProjection(parameters, ellps);
251 // "utm" is a shortcut for a set of parameters
252 if ("utm".equals(parameters.get(Param.proj.key))) {
253 Integer zone;
254 try {
255 zone = Integer.valueOf(Optional.ofNullable(parameters.get(Param.zone.key)).orElseThrow(
256 () -> new ProjectionConfigurationException(tr("UTM projection (''+proj=utm'') requires ''+zone=...'' parameter."))));
257 } catch (NumberFormatException e) {
258 zone = null;
259 }
260 if (zone == null || zone < 1 || zone > 60)
261 throw new ProjectionConfigurationException(tr("Expected integer value in range 1-60 for ''+zone=...'' parameter."));
262 this.lon0 = 6d * zone - 183d;
263 this.k0 = 0.9996;
264 this.x0 = 500_000;
265 this.y0 = parameters.containsKey(Param.south.key) ? 10_000_000 : 0;
266 }
267 String s = parameters.get(Param.x_0.key);
268 if (s != null) {
269 this.x0 = parseDouble(s, Param.x_0.key);
270 }
271 s = parameters.get(Param.y_0.key);
272 if (s != null) {
273 this.y0 = parseDouble(s, Param.y_0.key);
274 }
275 s = parameters.get(Param.lon_0.key);
276 if (s != null) {
277 this.lon0 = parseAngle(s, Param.lon_0.key);
278 }
279 if (proj instanceof ICentralMeridianProvider) {
280 this.lon0 = ((ICentralMeridianProvider) proj).getCentralMeridian();
281 }
282 s = parameters.get(Param.pm.key);
283 if (s != null) {
284 if (PRIME_MERIDANS.containsKey(s)) {
285 this.pm = PRIME_MERIDANS.get(s);
286 } else {
287 this.pm = parseAngle(s, Param.pm.key);
288 }
289 }
290 s = parameters.get(Param.k_0.key);
291 if (s != null) {
292 this.k0 = parseDouble(s, Param.k_0.key);
293 }
294 if (proj instanceof IScaleFactorProvider) {
295 this.k0 *= ((IScaleFactorProvider) proj).getScaleFactor();
296 }
297 s = parameters.get(Param.bounds.key);
298 if (s != null) {
299 this.bounds = parseBounds(s);
300 }
301 s = parameters.get(Param.wmssrs.key);
302 if (s != null) {
303 this.code = s;
304 }
305 boolean defaultUnits = true;
306 s = parameters.get(Param.units.key);
307 if (s != null) {
308 s = Utils.strip(s, "\"");
309 if (UNITS_TO_METERS.containsKey(s)) {
310 this.toMeter = UNITS_TO_METERS.get(s);
311 this.metersPerUnitWMTS = this.toMeter;
312 defaultUnits = false;
313 } else {
314 throw new ProjectionConfigurationException(tr("No unit found for: {0}", s));
315 }
316 }
317 s = parameters.get(Param.to_meter.key);
318 if (s != null) {
319 this.toMeter = parseDouble(s, Param.to_meter.key);
320 this.metersPerUnitWMTS = this.toMeter;
321 defaultUnits = false;
322 }
323 if (defaultUnits) {
324 this.toMeter = 1;
325 this.metersPerUnitWMTS = proj.isGeographic() ? METER_PER_UNIT_DEGREE : 1;
326 }
327 s = parameters.get(Param.axis.key);
328 if (s != null) {
329 this.axis = s;
330 }
331 }
332 }
333
334 /**
335 * Parse a parameter list to key=value pairs.
336 *
337 * @param pref the parameter list
338 * @param ignoreUnknownParameter true, if unknown parameter should not raise exception
339 * @return parameters map
340 * @throws ProjectionConfigurationException in case of invalid parameter
341 */
342 public static Map<String, String> parseParameterList(String pref, boolean ignoreUnknownParameter) throws ProjectionConfigurationException {
343 Map<String, String> parameters = new HashMap<>();
344 String trimmedPref = pref.trim();
345 if (trimmedPref.isEmpty()) {
346 return parameters;
347 }
348
349 Pattern keyPattern = Pattern.compile("\\+(?<key>[a-zA-Z0-9_]+)(=(?<value>.*))?");
350 String[] parts = Utils.WHITE_SPACES_PATTERN.split(trimmedPref);
351 for (String part : parts) {
352 Matcher m = keyPattern.matcher(part);
353 if (m.matches()) {
354 String key = m.group("key");
355 String value = m.group("value");
356 // some aliases
357 if (key.equals(Param.proj.key) && LON_LAT_VALUES.contains(value)) {
358 value = "lonlat";
359 }
360 Param param = Param.paramsByKey.get(key);
361 if (param == null) {
362 if (!ignoreUnknownParameter)
363 throw new ProjectionConfigurationException(tr("Unknown parameter: ''{0}''.", key));
364 } else {
365 if (param.hasValue && value == null)
366 throw new ProjectionConfigurationException(tr("Value expected for parameter ''{0}''.", key));
367 if (!param.hasValue && value != null)
368 throw new ProjectionConfigurationException(tr("No value expected for parameter ''{0}''.", key));
369 key = param.key; // To be really sure, we might have an alias.
370 }
371 parameters.put(key, value);
372 } else if (!part.startsWith("+")) {
373 throw new ProjectionConfigurationException(tr("Parameter must begin with a ''+'' character (found ''{0}'')", part));
374 } else {
375 throw new ProjectionConfigurationException(tr("Unexpected parameter format (''{0}'')", part));
376 }
377 }
378 return parameters;
379 }
380
381 /**
382 * Recursive resolution of +init includes.
383 *
384 * @param parameters parameters map
385 * @param ignoreUnknownParameter true, if unknown parameter should not raise exception
386 * @return parameters map with +init includes resolved
387 * @throws ProjectionConfigurationException in case of invalid parameter
388 */
389 public static Map<String, String> resolveInits(Map<String, String> parameters, boolean ignoreUnknownParameter)
390 throws ProjectionConfigurationException {
391 // recursive resolution of +init includes
392 String initKey = parameters.get(Param.init.key);
393 if (initKey != null) {
394 Map<String, String> initp;
395 try {
396 initp = parseParameterList(Optional.ofNullable(Projections.getInit(initKey)).orElseThrow(
397 () -> new ProjectionConfigurationException(tr("Value ''{0}'' for option +init not supported.", initKey))),
398 ignoreUnknownParameter);
399 initp = resolveInits(initp, ignoreUnknownParameter);
400 } catch (ProjectionConfigurationException ex) {
401 throw new ProjectionConfigurationException(initKey+": "+ex.getMessage(), ex);
402 }
403 initp.putAll(parameters);
404 return initp;
405 }
406 return parameters;
407 }
408
409 /**
410 * Gets the ellipsoid
411 * @param parameters The parameters to get the value from
412 * @return The Ellipsoid as specified with the parameters
413 * @throws ProjectionConfigurationException in case of invalid parameters
414 */
415 public Ellipsoid parseEllipsoid(Map<String, String> parameters) throws ProjectionConfigurationException {
416 String code = parameters.get(Param.ellps.key);
417 if (code != null) {
418 return Optional.ofNullable(Projections.getEllipsoid(code)).orElseThrow(
419 () -> new ProjectionConfigurationException(tr("Ellipsoid ''{0}'' not supported.", code)));
420 }
421 String s = parameters.get(Param.a.key);
422 if (s != null) {
423 double a = parseDouble(s, Param.a.key);
424 if (parameters.get(Param.es.key) != null) {
425 double es = parseDouble(parameters, Param.es.key);
426 return Ellipsoid.createAes(a, es);
427 }
428 if (parameters.get(Param.rf.key) != null) {
429 double rf = parseDouble(parameters, Param.rf.key);
430 return Ellipsoid.createArf(a, rf);
431 }
432 if (parameters.get(Param.f.key) != null) {
433 double f = parseDouble(parameters, Param.f.key);
434 return Ellipsoid.createAf(a, f);
435 }
436 if (parameters.get(Param.b.key) != null) {
437 double b = parseDouble(parameters, Param.b.key);
438 return Ellipsoid.createAb(a, b);
439 }
440 }
441 if (parameters.containsKey(Param.a.key) ||
442 parameters.containsKey(Param.es.key) ||
443 parameters.containsKey(Param.rf.key) ||
444 parameters.containsKey(Param.f.key) ||
445 parameters.containsKey(Param.b.key))
446 throw new ProjectionConfigurationException(tr("Combination of ellipsoid parameters is not supported."));
447 return null;
448 }
449
450 /**
451 * Gets the datum
452 * @param parameters The parameters to get the value from
453 * @param ellps The ellisoid that was previously computed
454 * @return The Datum as specified with the parameters
455 * @throws ProjectionConfigurationException in case of invalid parameters
456 */
457 public Datum parseDatum(Map<String, String> parameters, Ellipsoid ellps) throws ProjectionConfigurationException {
458 String datumId = parameters.get(Param.datum.key);
459 if (datumId != null) {
460 return Optional.ofNullable(Projections.getDatum(datumId)).orElseThrow(
461 () -> new ProjectionConfigurationException(tr("Unknown datum identifier: ''{0}''", datumId)));
462 }
463 if (ellps == null) {
464 if (parameters.containsKey(Param.no_defs.key))
465 throw new ProjectionConfigurationException(tr("Ellipsoid required (+ellps=* or +a=*, +b=*)"));
466 // nothing specified, use WGS84 as default
467 ellps = Ellipsoid.WGS84;
468 }
469
470 String nadgridsId = parameters.get(Param.nadgrids.key);
471 if (nadgridsId != null) {
472 if (nadgridsId.startsWith("@")) {
473 nadgridsId = nadgridsId.substring(1);
474 }
475 if ("null".equals(nadgridsId))
476 return new NullDatum(null, ellps);
477 final String fNadgridsId = nadgridsId;
478 return new NTV2Datum(fNadgridsId, null, ellps, Optional.ofNullable(Projections.getNTV2Grid(fNadgridsId)).orElseThrow(
479 () -> new ProjectionConfigurationException(tr("Grid shift file ''{0}'' for option +nadgrids not supported.", fNadgridsId))));
480 }
481
482 String towgs84 = parameters.get(Param.towgs84.key);
483 if (towgs84 != null)
484 return parseToWGS84(towgs84, ellps);
485
486 return new NullDatum(null, ellps);
487 }
488
489 /**
490 * Parse {@code towgs84} parameter.
491 * @param paramList List of parameter arguments (expected: 3 or 7)
492 * @param ellps ellipsoid
493 * @return parsed datum ({@link ThreeParameterDatum} or {@link SevenParameterDatum})
494 * @throws ProjectionConfigurationException if the arguments cannot be parsed
495 */
496 public Datum parseToWGS84(String paramList, Ellipsoid ellps) throws ProjectionConfigurationException {
497 String[] numStr = paramList.split(",");
498
499 if (numStr.length != 3 && numStr.length != 7)
500 throw new ProjectionConfigurationException(tr("Unexpected number of arguments for parameter ''towgs84'' (must be 3 or 7)"));
501 List<Double> towgs84Param = new ArrayList<>();
502 for (String str : numStr) {
503 try {
504 towgs84Param.add(Double.valueOf(str));
505 } catch (NumberFormatException e) {
506 throw new ProjectionConfigurationException(tr("Unable to parse value of parameter ''towgs84'' (''{0}'')", str), e);
507 }
508 }
509 boolean isCentric = true;
510 for (Double param : towgs84Param) {
511 if (param != 0) {
512 isCentric = false;
513 break;
514 }
515 }
516 if (isCentric)
517 return new CentricDatum(null, null, ellps);
518 boolean is3Param = true;
519 for (int i = 3; i < towgs84Param.size(); i++) {
520 if (towgs84Param.get(i) != 0) {
521 is3Param = false;
522 break;
523 }
524 }
525 if (is3Param)
526 return new ThreeParameterDatum(null, null, ellps,
527 towgs84Param.get(0),
528 towgs84Param.get(1),
529 towgs84Param.get(2));
530 else
531 return new SevenParameterDatum(null, null, ellps,
532 towgs84Param.get(0),
533 towgs84Param.get(1),
534 towgs84Param.get(2),
535 towgs84Param.get(3),
536 towgs84Param.get(4),
537 towgs84Param.get(5),
538 towgs84Param.get(6));
539 }
540
541 /**
542 * Gets a projection using the given ellipsoid
543 * @param parameters Additional parameters
544 * @param ellps The {@link Ellipsoid}
545 * @return The projection
546 * @throws ProjectionConfigurationException in case of invalid parameters
547 */
548 public Proj parseProjection(Map<String, String> parameters, Ellipsoid ellps) throws ProjectionConfigurationException {
549 String id = parameters.get(Param.proj.key);
550 if (id == null) throw new ProjectionConfigurationException(tr("Projection required (+proj=*)"));
551
552 // "utm" is not a real projection, but a shortcut for a set of parameters
553 if ("utm".equals(id)) {
554 id = "tmerc";
555 }
556 Proj proj = Projections.getBaseProjection(id);
557 if (proj == null) throw new ProjectionConfigurationException(tr("Unknown projection identifier: ''{0}''", id));
558
559 ProjParameters projParams = new ProjParameters();
560
561 projParams.ellps = ellps;
562
563 String s;
564 s = parameters.get(Param.lat_0.key);
565 if (s != null) {
566 projParams.lat0 = parseAngle(s, Param.lat_0.key);
567 }
568 s = parameters.get(Param.lat_1.key);
569 if (s != null) {
570 projParams.lat1 = parseAngle(s, Param.lat_1.key);
571 }
572 s = parameters.get(Param.lat_2.key);
573 if (s != null) {
574 projParams.lat2 = parseAngle(s, Param.lat_2.key);
575 }
576 s = parameters.get(Param.lat_ts.key);
577 if (s != null) {
578 projParams.lat_ts = parseAngle(s, Param.lat_ts.key);
579 }
580 s = parameters.get(Param.lonc.key);
581 if (s != null) {
582 projParams.lonc = parseAngle(s, Param.lonc.key);
583 }
584 s = parameters.get(Param.alpha.key);
585 if (s != null) {
586 projParams.alpha = parseAngle(s, Param.alpha.key);
587 }
588 s = parameters.get(Param.gamma.key);
589 if (s != null) {
590 projParams.gamma = parseAngle(s, Param.gamma.key);
591 }
592 s = parameters.get(Param.lon_1.key);
593 if (s != null) {
594 projParams.lon1 = parseAngle(s, Param.lon_1.key);
595 }
596 s = parameters.get(Param.lon_2.key);
597 if (s != null) {
598 projParams.lon2 = parseAngle(s, Param.lon_2.key);
599 }
600 if (parameters.containsKey(Param.no_off.key) || parameters.containsKey(Param.no_uoff.key)) {
601 projParams.no_off = Boolean.TRUE;
602 }
603 proj.initialize(projParams);
604 return proj;
605 }
606
607 /**
608 * Converts a string to a bounds object
609 * @param boundsStr The string as comma separated list of angles.
610 * @return The bounds.
611 * @throws ProjectionConfigurationException in case of invalid parameter
612 * @see CustomProjection#parseAngle(String, String)
613 */
614 public static Bounds parseBounds(String boundsStr) throws ProjectionConfigurationException {
615 String[] numStr = boundsStr.split(",");
616 if (numStr.length != 4)
617 throw new ProjectionConfigurationException(tr("Unexpected number of arguments for parameter ''+bounds'' (must be 4)"));
618 return new Bounds(parseAngle(numStr[1], "minlat (+bounds)"),
619 parseAngle(numStr[0], "minlon (+bounds)"),
620 parseAngle(numStr[3], "maxlat (+bounds)"),
621 parseAngle(numStr[2], "maxlon (+bounds)"), false);
622 }
623
624 public static double parseDouble(Map<String, String> parameters, String parameterName) throws ProjectionConfigurationException {
625 if (!parameters.containsKey(parameterName))
626 throw new ProjectionConfigurationException(tr("Unknown parameter ''{0}''", parameterName));
627 return parseDouble(Optional.ofNullable(parameters.get(parameterName)).orElseThrow(
628 () -> new ProjectionConfigurationException(tr("Expected number argument for parameter ''{0}''", parameterName))),
629 parameterName);
630 }
631
632 public static double parseDouble(String doubleStr, String parameterName) throws ProjectionConfigurationException {
633 try {
634 return Double.parseDouble(doubleStr);
635 } catch (NumberFormatException e) {
636 throw new ProjectionConfigurationException(
637 tr("Unable to parse value ''{1}'' of parameter ''{0}'' as number.", parameterName, doubleStr), e);
638 }
639 }
640
641 /**
642 * Convert an angle string to a double value
643 * @param angleStr The string. e.g. -1.1 or 50d10'3"
644 * @param parameterName Only for error message.
645 * @return The angle value, in degrees.
646 * @throws ProjectionConfigurationException in case of invalid parameter
647 */
648 public static double parseAngle(String angleStr, String parameterName) throws ProjectionConfigurationException {
649 try {
650 return LatLonParser.parseCoordinate(angleStr);
651 } catch (IllegalArgumentException e) {
652 throw new ProjectionConfigurationException(
653 tr("Unable to parse value ''{1}'' of parameter ''{0}'' as coordinate value.", parameterName, angleStr), e);
654 }
655 }
656
657 @Override
658 public Integer getEpsgCode() {
659 if (code != null && code.startsWith("EPSG:")) {
660 try {
661 return Integer.valueOf(code.substring(5));
662 } catch (NumberFormatException e) {
663 Logging.warn(e);
664 }
665 }
666 return null;
667 }
668
669 @Override
670 public String toCode() {
671 if (code != null) {
672 return code;
673 } else if (pref != null) {
674 return "proj:" + pref;
675 } else {
676 return "proj:ERROR";
677 }
678 }
679
680 @Override
681 public Bounds getWorldBoundsLatLon() {
682 if (bounds == null) {
683 Bounds ab = proj.getAlgorithmBounds();
684 if (ab != null) {
685 double minlon = Math.max(ab.getMinLon() + lon0 + pm, -180);
686 double maxlon = Math.min(ab.getMaxLon() + lon0 + pm, 180);
687 bounds = new Bounds(ab.getMinLat(), minlon, ab.getMaxLat(), maxlon, false);
688 } else {
689 bounds = new Bounds(
690 new LatLon(-90.0, -180.0),
691 new LatLon(90.0, 180.0));
692 }
693 }
694 return bounds;
695 }
696
697 @Override
698 public String toString() {
699 return name != null ? name : tr("Custom Projection");
700 }
701
702 /**
703 * Factor to convert units of east/north coordinates to meters.
704 *
705 * When east/north coordinates are in degrees (geographic CRS), the scale
706 * at the equator is taken, i.e. 360 degrees corresponds to the length of
707 * the equator in meters.
708 *
709 * @return factor to convert units to meter
710 */
711 @Override
712 public double getMetersPerUnit() {
713 return metersPerUnitWMTS;
714 }
715
716 @Override
717 public boolean switchXY() {
718 // TODO: support for other axis orientation such as West South, and Up Down
719 return this.axis.startsWith("ne");
720 }
721
722 private static Map<String, Double> getUnitsToMeters() {
723 Map<String, Double> ret = new ConcurrentHashMap<>();
724 ret.put("km", 1000d);
725 ret.put("m", 1d);
726 ret.put("dm", 1d/10);
727 ret.put("cm", 1d/100);
728 ret.put("mm", 1d/1000);
729 ret.put("kmi", 1852.0);
730 ret.put("in", 0.0254);
731 ret.put("ft", 0.3048);
732 ret.put("yd", 0.9144);
733 ret.put("mi", 1609.344);
734 ret.put("fathom", 1.8288);
735 ret.put("chain", 20.1168);
736 ret.put("link", 0.201168);
737 ret.put("us-in", 1d/39.37);
738 ret.put("us-ft", 0.304800609601219);
739 ret.put("us-yd", 0.914401828803658);
740 ret.put("us-ch", 20.11684023368047);
741 ret.put("us-mi", 1609.347218694437);
742 ret.put("ind-yd", 0.91439523);
743 ret.put("ind-ft", 0.30479841);
744 ret.put("ind-ch", 20.11669506);
745 ret.put("degree", METER_PER_UNIT_DEGREE);
746 return ret;
747 }
748
749 private static Map<String, Double> getPrimeMeridians() {
750 Map<String, Double> ret = new ConcurrentHashMap<>();
751 try {
752 ret.put("greenwich", 0.0);
753 ret.put("lisbon", parseAngle("9d07'54.862\"W", null));
754 ret.put("paris", parseAngle("2d20'14.025\"E", null));
755 ret.put("bogota", parseAngle("74d04'51.3\"W", null));
756 ret.put("madrid", parseAngle("3d41'16.58\"W", null));
757 ret.put("rome", parseAngle("12d27'8.4\"E", null));
758 ret.put("bern", parseAngle("7d26'22.5\"E", null));
759 ret.put("jakarta", parseAngle("106d48'27.79\"E", null));
760 ret.put("ferro", parseAngle("17d40'W", null));
761 ret.put("brussels", parseAngle("4d22'4.71\"E", null));
762 ret.put("stockholm", parseAngle("18d3'29.8\"E", null));
763 ret.put("athens", parseAngle("23d42'58.815\"E", null));
764 ret.put("oslo", parseAngle("10d43'22.5\"E", null));
765 } catch (ProjectionConfigurationException ex) {
766 throw new IllegalStateException(ex);
767 }
768 return ret;
769 }
770
771 private static EastNorth getPointAlong(int i, int n, ProjectionBounds r) {
772 double dEast = (r.maxEast - r.minEast) / n;
773 double dNorth = (r.maxNorth - r.minNorth) / n;
774 if (i < n) {
775 return new EastNorth(r.minEast + i * dEast, r.minNorth);
776 } else if (i < 2*n) {
777 i -= n;
778 return new EastNorth(r.maxEast, r.minNorth + i * dNorth);
779 } else if (i < 3*n) {
780 i -= 2*n;
781 return new EastNorth(r.maxEast - i * dEast, r.maxNorth);
782 } else if (i < 4*n) {
783 i -= 3*n;
784 return new EastNorth(r.minEast, r.maxNorth - i * dNorth);
785 } else {
786 throw new AssertionError();
787 }
788 }
789
790 private EastNorth getPole(Polarity whichPole) {
791 if (polesEN == null) {
792 polesEN = new EnumMap<>(Polarity.class);
793 for (Polarity p : Polarity.values()) {
794 polesEN.put(p, null);
795 LatLon ll = p.getLatLon();
796 try {
797 EastNorth enPole = latlon2eastNorth(ll);
798 if (enPole.isValid()) {
799 // project back and check if the result is somewhat reasonable
800 LatLon llBack = eastNorth2latlon(enPole);
801 if (llBack.isValid() && ll.greatCircleDistance(llBack) < 1000) {
802 polesEN.put(p, enPole);
803 }
804 }
805 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
806 Logging.error(e);
807 }
808 }
809 }
810 return polesEN.get(whichPole);
811 }
812
813 @Override
814 public Bounds getLatLonBoundsBox(ProjectionBounds r) {
815 final int n = 10;
816 Bounds result = new Bounds(eastNorth2latlon(r.getMin()));
817 result.extend(eastNorth2latlon(r.getMax()));
818 LatLon llPrev = null;
819 for (int i = 0; i < 4*n; i++) {
820 LatLon llNow = eastNorth2latlon(getPointAlong(i, n, r));
821 result.extend(llNow);
822 // check if segment crosses 180th meridian and if so, make sure
823 // to extend bounds to +/-180 degrees longitude
824 if (llPrev != null) {
825 double lon1 = llPrev.lon();
826 double lon2 = llNow.lon();
827 if (90 < lon1 && lon1 < 180 && -180 < lon2 && lon2 < -90) {
828 result.extend(new LatLon(llPrev.lat(), 180));
829 result.extend(new LatLon(llNow.lat(), -180));
830 }
831 if (90 < lon2 && lon2 < 180 && -180 < lon1 && lon1 < -90) {
832 result.extend(new LatLon(llNow.lat(), 180));
833 result.extend(new LatLon(llPrev.lat(), -180));
834 }
835 }
836 llPrev = llNow;
837 }
838 // if the box contains one of the poles, the above method did not get
839 // correct min/max latitude value
840 for (Polarity p : Polarity.values()) {
841 EastNorth pole = getPole(p);
842 if (pole != null && r.contains(pole)) {
843 result.extend(p.getLatLon());
844 }
845 }
846 return result;
847 }
848
849 @Override
850 public ProjectionBounds getEastNorthBoundsBox(ProjectionBounds box, Projection boxProjection) {
851 final int n = 8;
852 ProjectionBounds result = null;
853 for (int i = 0; i < 4*n; i++) {
854 EastNorth en = latlon2eastNorth(boxProjection.eastNorth2latlon(getPointAlong(i, n, box)));
855 if (result == null) {
856 result = new ProjectionBounds(en);
857 } else {
858 result.extend(en);
859 }
860 }
861 return result;
862 }
863
864 /**
865 * Return true, if a geographic coordinate reference system is represented.
866 *
867 * I.e. if it returns latitude/longitude values rather than Cartesian
868 * east/north coordinates on a flat surface.
869 * @return true, if it is geographic
870 * @since 12792
871 */
872 public boolean isGeographic() {
873 return proj.isGeographic();
874 }
875
876}
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