source: josm/trunk/src/org/openstreetmap/josm/data/projection/CustomProjection.java@ 9108

Last change on this file since 9108 was 9106, checked in by bastiK, 8 years ago

do not throw an error when datum is missing, return NullDatum instead of CentricDatum
(to match the proj.4 implementation)
  • Property svn:eol-style set to native
File size: 25.5 KB
Line 
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.HashMap;
8import java.util.List;
9import java.util.Map;
10import java.util.concurrent.ConcurrentHashMap;
11import java.util.regex.Matcher;
12import java.util.regex.Pattern;
13
14import org.openstreetmap.josm.Main;
15import org.openstreetmap.josm.data.Bounds;
16import org.openstreetmap.josm.data.coor.LatLon;
17import org.openstreetmap.josm.data.projection.datum.CentricDatum;
18import org.openstreetmap.josm.data.projection.datum.Datum;
19import org.openstreetmap.josm.data.projection.datum.NTV2Datum;
20import org.openstreetmap.josm.data.projection.datum.NTV2GridShiftFileWrapper;
21import org.openstreetmap.josm.data.projection.datum.NullDatum;
22import org.openstreetmap.josm.data.projection.datum.SevenParameterDatum;
23import org.openstreetmap.josm.data.projection.datum.ThreeParameterDatum;
24import org.openstreetmap.josm.data.projection.datum.WGS84Datum;
25import org.openstreetmap.josm.data.projection.proj.Mercator;
26import org.openstreetmap.josm.data.projection.proj.Proj;
27import org.openstreetmap.josm.data.projection.proj.ProjParameters;
28import org.openstreetmap.josm.tools.Utils;
29
30/**
31 * Custom projection.
32 *
33 * Inspired by PROJ.4 and Proj4J.
34 * @since 5072
35 */
36public class CustomProjection extends AbstractProjection {
37
38 private static final double METER_PER_UNIT_DEGREE = 2 * Math.PI * 6370997 / 360;
39 private static final Map<String, Double> UNITS_TO_METERS = getUnitsToMeters();
40 private static final Map<String, Double> PRIME_MERIDANS = getPrimeMeridians();
41
42 /**
43 * pref String that defines the projection
44 *
45 * null means fall back mode (Mercator)
46 */
47 protected String pref;
48 protected String name;
49 protected String code;
50 protected String cacheDir;
51 protected Bounds bounds;
52 private double metersPerUnit = METER_PER_UNIT_DEGREE; // default to degrees
53 private String axis = "enu"; // default axis orientation is East, North, Up
54
55 /**
56 * Proj4-like projection parameters. See <a href="https://trac.osgeo.org/proj/wiki/GenParms">reference</a>.
57 * @since 7370 (public)
58 */
59 public enum Param {
60
61 /** False easting */
62 x_0("x_0", true),
63 /** False northing */
64 y_0("y_0", true),
65 /** Central meridian */
66 lon_0("lon_0", true),
67 /** Prime meridian */
68 pm("pm", true),
69 /** Scaling factor */
70 k_0("k_0", true),
71 /** Ellipsoid name (see {@code proj -le}) */
72 ellps("ellps", true),
73 /** Semimajor radius of the ellipsoid axis */
74 a("a", true),
75 /** Eccentricity of the ellipsoid squared */
76 es("es", true),
77 /** Reciprocal of the ellipsoid flattening term (e.g. 298) */
78 rf("rf", true),
79 /** Flattening of the ellipsoid = 1-sqrt(1-e^2) */
80 f("f", true),
81 /** Semiminor radius of the ellipsoid axis */
82 b("b", true),
83 /** Datum name (see {@code proj -ld}) */
84 datum("datum", true),
85 /** 3 or 7 term datum transform parameters */
86 towgs84("towgs84", true),
87 /** Filename of NTv2 grid file to use for datum transforms */
88 nadgrids("nadgrids", true),
89 /** Projection name (see {@code proj -l}) */
90 proj("proj", true),
91 /** Latitude of origin */
92 lat_0("lat_0", true),
93 /** Latitude of first standard parallel */
94 lat_1("lat_1", true),
95 /** Latitude of second standard parallel */
96 lat_2("lat_2", true),
97 /** the exact proj.4 string will be preserved in the WKT representation */
98 wktext("wktext", false), // ignored
99 /** meters, US survey feet, etc. */
100 units("units", true),
101 /** Don't use the /usr/share/proj/proj_def.dat defaults file */
102 no_defs("no_defs", false),
103 init("init", true),
104 /** crs units to meter multiplier */
105 to_meter("to_meter", true),
106 /** definition of axis for projection */
107 axis("axis", true),
108 /** UTM zone */
109 zone("zone", true),
110 /** indicate southern hemisphere for UTM */
111 south("south", false),
112 // JOSM extensions, not present in PROJ.4
113 wmssrs("wmssrs", true),
114 bounds("bounds", true);
115
116 /** Parameter key */
117 public final String key;
118 /** {@code true} if the parameter has a value */
119 public final boolean hasValue;
120
121 /** Map of all parameters by key */
122 static final Map<String, Param> paramsByKey = new ConcurrentHashMap<>();
123 static {
124 for (Param p : Param.values()) {
125 paramsByKey.put(p.key, p);
126 }
127 }
128
129 Param(String key, boolean hasValue) {
130 this.key = key;
131 this.hasValue = hasValue;
132 }
133 }
134
135 /**
136 * Constructs a new empty {@code CustomProjection}.
137 */
138 public CustomProjection() {
139 // contents can be set later with update()
140 }
141
142 /**
143 * Constructs a new {@code CustomProjection} with given parameters.
144 * @param pref String containing projection parameters
145 * (ex: "+proj=tmerc +lon_0=-3 +k_0=0.9996 +x_0=500000 +ellps=WGS84 +datum=WGS84 +bounds=-8,-5,2,85")
146 */
147 public CustomProjection(String pref) {
148 this(null, null, pref, null);
149 }
150
151 /**
152 * Constructs a new {@code CustomProjection} with given name, code and parameters.
153 *
154 * @param name describe projection in one or two words
155 * @param code unique code for this projection - may be null
156 * @param pref the string that defines the custom projection
157 * @param cacheDir cache directory name
158 */
159 public CustomProjection(String name, String code, String pref, String cacheDir) {
160 this.name = name;
161 this.code = code;
162 this.pref = pref;
163 this.cacheDir = cacheDir;
164 try {
165 update(pref);
166 } catch (ProjectionConfigurationException ex) {
167 try {
168 update(null);
169 } catch (ProjectionConfigurationException ex1) {
170 throw new RuntimeException(ex1);
171 }
172 }
173 }
174
175 /**
176 * Updates this {@code CustomProjection} with given parameters.
177 * @param pref String containing projection parameters (ex: "+proj=lonlat +ellps=WGS84 +datum=WGS84 +bounds=-180,-90,180,90")
178 * @throws ProjectionConfigurationException if {@code pref} cannot be parsed properly
179 */
180 public final void update(String pref) throws ProjectionConfigurationException {
181 this.pref = pref;
182 if (pref == null) {
183 ellps = Ellipsoid.WGS84;
184 datum = WGS84Datum.INSTANCE;
185 proj = new Mercator();
186 bounds = new Bounds(
187 -85.05112877980659, -180.0,
188 85.05112877980659, 180.0, true);
189 } else {
190 Map<String, String> parameters = parseParameterList(pref);
191 ellps = parseEllipsoid(parameters);
192 datum = parseDatum(parameters, ellps);
193 if (ellps == null) {
194 ellps = datum.getEllipsoid();
195 }
196 proj = parseProjection(parameters, ellps);
197 // "utm" is a shortcut for a set of parameters
198 if ("utm".equals(parameters.get(Param.proj.key))) {
199 String zoneStr = parameters.get(Param.zone.key);
200 Integer zone;
201 if (zoneStr == null)
202 throw new ProjectionConfigurationException(tr("UTM projection (''+proj=utm'') requires ''+zone=...'' parameter."));
203 try {
204 zone = Integer.valueOf(zoneStr);
205 } catch (NumberFormatException e) {
206 zone = null;
207 }
208 if (zone == null || zone < 1 || zone > 60)
209 throw new ProjectionConfigurationException(tr("Expected integer value in range 1-60 for ''+zone=...'' parameter."));
210 this.lon0 = 6 * zone - 183;
211 this.k0 = 0.9996;
212 this.x0 = 500000;
213 this.y0 = parameters.containsKey(Param.south.key) ? 10000000 : 0;
214 }
215 String s = parameters.get(Param.x_0.key);
216 if (s != null) {
217 this.x0 = parseDouble(s, Param.x_0.key);
218 }
219 s = parameters.get(Param.y_0.key);
220 if (s != null) {
221 this.y0 = parseDouble(s, Param.y_0.key);
222 }
223 s = parameters.get(Param.lon_0.key);
224 if (s != null) {
225 this.lon0 = parseAngle(s, Param.lon_0.key);
226 }
227 s = parameters.get(Param.pm.key);
228 if (s != null) {
229 if (PRIME_MERIDANS.containsKey(s)) {
230 this.pm = PRIME_MERIDANS.get(s);
231 } else {
232 this.pm = parseAngle(s, Param.pm.key);
233 }
234 }
235 s = parameters.get(Param.k_0.key);
236 if (s != null) {
237 this.k0 = parseDouble(s, Param.k_0.key);
238 }
239 s = parameters.get(Param.bounds.key);
240 if (s != null) {
241 this.bounds = parseBounds(s);
242 }
243 s = parameters.get(Param.wmssrs.key);
244 if (s != null) {
245 this.code = s;
246 }
247 s = parameters.get(Param.units.key);
248 if (s != null) {
249 s = Utils.strip(s, "\"");
250 if (UNITS_TO_METERS.containsKey(s)) {
251 this.metersPerUnit = UNITS_TO_METERS.get(s);
252 } else {
253 Main.warn("No metersPerUnit found for: " + s);
254 }
255 }
256 s = parameters.get(Param.to_meter.key);
257 if (s != null) {
258 this.metersPerUnit = parseDouble(s, Param.to_meter.key);
259 }
260 s = parameters.get(Param.axis.key);
261 if (s != null) {
262 this.axis = s;
263 }
264 }
265 }
266
267 private Map<String, String> parseParameterList(String pref) throws ProjectionConfigurationException {
268 Map<String, String> parameters = new HashMap<>();
269 String[] parts = Utils.WHITE_SPACES_PATTERN.split(pref.trim());
270 if (pref.trim().isEmpty()) {
271 parts = new String[0];
272 }
273 for (String part : parts) {
274 if (part.isEmpty() || part.charAt(0) != '+')
275 throw new ProjectionConfigurationException(tr("Parameter must begin with a ''+'' character (found ''{0}'')", part));
276 Matcher m = Pattern.compile("\\+([a-zA-Z0-9_]+)(=(.*))?").matcher(part);
277 if (m.matches()) {
278 String key = m.group(1);
279 // alias
280 if ("k".equals(key)) {
281 key = Param.k_0.key;
282 }
283 String value = null;
284 if (m.groupCount() >= 3) {
285 value = m.group(3);
286 // some aliases
287 if (key.equals(Param.proj.key)) {
288 if ("longlat".equals(value) || "latlon".equals(value) || "latlong".equals(value)) {
289 value = "lonlat";
290 }
291 }
292 }
293 if (!Param.paramsByKey.containsKey(key))
294 throw new ProjectionConfigurationException(tr("Unknown parameter: ''{0}''.", key));
295 if (Param.paramsByKey.get(key).hasValue && value == null)
296 throw new ProjectionConfigurationException(tr("Value expected for parameter ''{0}''.", key));
297 if (!Param.paramsByKey.get(key).hasValue && value != null)
298 throw new ProjectionConfigurationException(tr("No value expected for parameter ''{0}''.", key));
299 parameters.put(key, value);
300 } else
301 throw new ProjectionConfigurationException(tr("Unexpected parameter format (''{0}'')", part));
302 }
303 // recursive resolution of +init includes
304 String initKey = parameters.get(Param.init.key);
305 if (initKey != null) {
306 String init = Projections.getInit(initKey);
307 if (init == null)
308 throw new ProjectionConfigurationException(tr("Value ''{0}'' for option +init not supported.", initKey));
309 Map<String, String> initp = null;
310 try {
311 initp = parseParameterList(init);
312 } catch (ProjectionConfigurationException ex) {
313 throw new ProjectionConfigurationException(tr(initKey+": "+ex.getMessage()), ex);
314 }
315 for (Map.Entry<String, String> e : parameters.entrySet()) {
316 initp.put(e.getKey(), e.getValue());
317 }
318 return initp;
319 }
320 return parameters;
321 }
322
323 public Ellipsoid parseEllipsoid(Map<String, String> parameters) throws ProjectionConfigurationException {
324 String code = parameters.get(Param.ellps.key);
325 if (code != null) {
326 Ellipsoid ellipsoid = Projections.getEllipsoid(code);
327 if (ellipsoid == null) {
328 throw new ProjectionConfigurationException(tr("Ellipsoid ''{0}'' not supported.", code));
329 } else {
330 return ellipsoid;
331 }
332 }
333 String s = parameters.get(Param.a.key);
334 if (s != null) {
335 double a = parseDouble(s, Param.a.key);
336 if (parameters.get(Param.es.key) != null) {
337 double es = parseDouble(parameters, Param.es.key);
338 return Ellipsoid.create_a_es(a, es);
339 }
340 if (parameters.get(Param.rf.key) != null) {
341 double rf = parseDouble(parameters, Param.rf.key);
342 return Ellipsoid.create_a_rf(a, rf);
343 }
344 if (parameters.get(Param.f.key) != null) {
345 double f = parseDouble(parameters, Param.f.key);
346 return Ellipsoid.create_a_f(a, f);
347 }
348 if (parameters.get(Param.b.key) != null) {
349 double b = parseDouble(parameters, Param.b.key);
350 return Ellipsoid.create_a_b(a, b);
351 }
352 }
353 if (parameters.containsKey(Param.a.key) ||
354 parameters.containsKey(Param.es.key) ||
355 parameters.containsKey(Param.rf.key) ||
356 parameters.containsKey(Param.f.key) ||
357 parameters.containsKey(Param.b.key))
358 throw new ProjectionConfigurationException(tr("Combination of ellipsoid parameters is not supported."));
359 return null;
360 }
361
362 public Datum parseDatum(Map<String, String> parameters, Ellipsoid ellps) throws ProjectionConfigurationException {
363 String datumId = parameters.get(Param.datum.key);
364 if (datumId != null) {
365 Datum datum = Projections.getDatum(datumId);
366 if (datum == null) throw new ProjectionConfigurationException(tr("Unknown datum identifier: ''{0}''", datumId));
367 return datum;
368 }
369 if (ellps == null) {
370 if (parameters.containsKey(Param.no_defs.key))
371 throw new ProjectionConfigurationException(tr("Ellipsoid required (+ellps=* or +a=*, +b=*)"));
372 // nothing specified, use WGS84 as default
373 ellps = Ellipsoid.WGS84;
374 }
375
376 String nadgridsId = parameters.get(Param.nadgrids.key);
377 if (nadgridsId != null) {
378 if (nadgridsId.startsWith("@")) {
379 nadgridsId = nadgridsId.substring(1);
380 }
381 if ("null".equals(nadgridsId))
382 return new NullDatum(null, ellps);
383 NTV2GridShiftFileWrapper nadgrids = Projections.getNTV2Grid(nadgridsId);
384 if (nadgrids == null)
385 throw new ProjectionConfigurationException(tr("Grid shift file ''{0}'' for option +nadgrids not supported.", nadgridsId));
386 return new NTV2Datum(nadgridsId, null, ellps, nadgrids);
387 }
388
389 String towgs84 = parameters.get(Param.towgs84.key);
390 if (towgs84 != null)
391 return parseToWGS84(towgs84, ellps);
392
393 return new NullDatum(null, ellps);
394 }
395
396 public Datum parseToWGS84(String paramList, Ellipsoid ellps) throws ProjectionConfigurationException {
397 String[] numStr = paramList.split(",");
398
399 if (numStr.length != 3 && numStr.length != 7)
400 throw new ProjectionConfigurationException(tr("Unexpected number of arguments for parameter ''towgs84'' (must be 3 or 7)"));
401 List<Double> towgs84Param = new ArrayList<>();
402 for (String str : numStr) {
403 try {
404 towgs84Param.add(Double.valueOf(str));
405 } catch (NumberFormatException e) {
406 throw new ProjectionConfigurationException(tr("Unable to parse value of parameter ''towgs84'' (''{0}'')", str), e);
407 }
408 }
409 boolean isCentric = true;
410 for (Double param : towgs84Param) {
411 if (param != 0) {
412 isCentric = false;
413 break;
414 }
415 }
416 if (isCentric)
417 return new CentricDatum(null, null, ellps);
418 boolean is3Param = true;
419 for (int i = 3; i < towgs84Param.size(); i++) {
420 if (towgs84Param.get(i) != 0) {
421 is3Param = false;
422 break;
423 }
424 }
425 if (is3Param)
426 return new ThreeParameterDatum(null, null, ellps,
427 towgs84Param.get(0),
428 towgs84Param.get(1),
429 towgs84Param.get(2));
430 else
431 return new SevenParameterDatum(null, null, ellps,
432 towgs84Param.get(0),
433 towgs84Param.get(1),
434 towgs84Param.get(2),
435 towgs84Param.get(3),
436 towgs84Param.get(4),
437 towgs84Param.get(5),
438 towgs84Param.get(6));
439 }
440
441 public Proj parseProjection(Map<String, String> parameters, Ellipsoid ellps) throws ProjectionConfigurationException {
442 String id = parameters.get(Param.proj.key);
443 if (id == null) throw new ProjectionConfigurationException(tr("Projection required (+proj=*)"));
444
445 // "utm" is not a real projection, but a shortcut for a set of parameters
446 if ("utm".equals(id)) {
447 id = "tmerc";
448 }
449 Proj proj = Projections.getBaseProjection(id);
450 if (proj == null) throw new ProjectionConfigurationException(tr("Unknown projection identifier: ''{0}''", id));
451
452 ProjParameters projParams = new ProjParameters();
453
454 projParams.ellps = ellps;
455
456 String s;
457 s = parameters.get(Param.lat_0.key);
458 if (s != null) {
459 projParams.lat0 = parseAngle(s, Param.lat_0.key);
460 }
461 s = parameters.get(Param.lat_1.key);
462 if (s != null) {
463 projParams.lat1 = parseAngle(s, Param.lat_1.key);
464 }
465 s = parameters.get(Param.lat_2.key);
466 if (s != null) {
467 projParams.lat2 = parseAngle(s, Param.lat_2.key);
468 }
469 proj.initialize(projParams);
470 return proj;
471 }
472
473 public static Bounds parseBounds(String boundsStr) throws ProjectionConfigurationException {
474 String[] numStr = boundsStr.split(",");
475 if (numStr.length != 4)
476 throw new ProjectionConfigurationException(tr("Unexpected number of arguments for parameter ''+bounds'' (must be 4)"));
477 return new Bounds(parseAngle(numStr[1], "minlat (+bounds)"),
478 parseAngle(numStr[0], "minlon (+bounds)"),
479 parseAngle(numStr[3], "maxlat (+bounds)"),
480 parseAngle(numStr[2], "maxlon (+bounds)"), false);
481 }
482
483 public static double parseDouble(Map<String, String> parameters, String parameterName) throws ProjectionConfigurationException {
484 if (!parameters.containsKey(parameterName))
485 throw new ProjectionConfigurationException(tr("Unknown parameter ''{0}''", parameterName));
486 String doubleStr = parameters.get(parameterName);
487 if (doubleStr == null)
488 throw new ProjectionConfigurationException(
489 tr("Expected number argument for parameter ''{0}''", parameterName));
490 return parseDouble(doubleStr, parameterName);
491 }
492
493 public static double parseDouble(String doubleStr, String parameterName) throws ProjectionConfigurationException {
494 try {
495 return Double.parseDouble(doubleStr);
496 } catch (NumberFormatException e) {
497 throw new ProjectionConfigurationException(
498 tr("Unable to parse value ''{1}'' of parameter ''{0}'' as number.", parameterName, doubleStr), e);
499 }
500 }
501
502 public static double parseAngle(String angleStr, String parameterName) throws ProjectionConfigurationException {
503 String s = angleStr;
504 double value = 0;
505 boolean neg = false;
506 Matcher m = Pattern.compile("^-").matcher(s);
507 if (m.find()) {
508 neg = true;
509 s = s.substring(m.end());
510 }
511 final String FLOAT = "(\\d+(\\.\\d*)?)";
512 boolean dms = false;
513 double deg = 0.0, min = 0.0, sec = 0.0;
514 // degrees
515 m = Pattern.compile("^"+FLOAT+"d").matcher(s);
516 if (m.find()) {
517 s = s.substring(m.end());
518 deg = Double.parseDouble(m.group(1));
519 dms = true;
520 }
521 // minutes
522 m = Pattern.compile("^"+FLOAT+"'").matcher(s);
523 if (m.find()) {
524 s = s.substring(m.end());
525 min = Double.parseDouble(m.group(1));
526 dms = true;
527 }
528 // seconds
529 m = Pattern.compile("^"+FLOAT+"\"").matcher(s);
530 if (m.find()) {
531 s = s.substring(m.end());
532 sec = Double.parseDouble(m.group(1));
533 dms = true;
534 }
535 // plain number (in degrees)
536 if (dms) {
537 value = deg + (min/60.0) + (sec/3600.0);
538 } else {
539 m = Pattern.compile("^"+FLOAT).matcher(s);
540 if (m.find()) {
541 s = s.substring(m.end());
542 value += Double.parseDouble(m.group(1));
543 }
544 }
545 m = Pattern.compile("^(N|E)", Pattern.CASE_INSENSITIVE).matcher(s);
546 if (m.find()) {
547 s = s.substring(m.end());
548 } else {
549 m = Pattern.compile("^(S|W)", Pattern.CASE_INSENSITIVE).matcher(s);
550 if (m.find()) {
551 s = s.substring(m.end());
552 neg = !neg;
553 }
554 }
555 if (neg) {
556 value = -value;
557 }
558 if (!s.isEmpty()) {
559 throw new ProjectionConfigurationException(
560 tr("Unable to parse value ''{1}'' of parameter ''{0}'' as coordinate value.", parameterName, angleStr));
561 }
562 return value;
563 }
564
565 @Override
566 public Integer getEpsgCode() {
567 if (code != null && code.startsWith("EPSG:")) {
568 try {
569 return Integer.valueOf(code.substring(5));
570 } catch (NumberFormatException e) {
571 Main.warn(e);
572 }
573 }
574 return null;
575 }
576
577 @Override
578 public String toCode() {
579 return code != null ? code : "proj:" + (pref == null ? "ERROR" : pref);
580 }
581
582 @Override
583 public String getCacheDirectoryName() {
584 return cacheDir != null ? cacheDir : "proj-"+Utils.md5Hex(pref == null ? "" : pref).substring(0, 4);
585 }
586
587 @Override
588 public Bounds getWorldBoundsLatLon() {
589 if (bounds != null) return bounds;
590 return new Bounds(
591 new LatLon(-90.0, -180.0),
592 new LatLon(90.0, 180.0));
593 }
594
595 @Override
596 public String toString() {
597 return name != null ? name : tr("Custom Projection");
598 }
599
600 @Override
601 public double getMetersPerUnit() {
602 return metersPerUnit;
603 }
604
605 @Override
606 public boolean switchXY() {
607 // TODO: support for other axis orientation such as West South, and Up Down
608 return this.axis.startsWith("ne");
609 }
610
611 private static Map<String, Double> getUnitsToMeters() {
612 Map<String, Double> ret = new ConcurrentHashMap<>();
613 ret.put("km", 1000d);
614 ret.put("m", 1d);
615 ret.put("dm", 1d/10);
616 ret.put("cm", 1d/100);
617 ret.put("mm", 1d/1000);
618 ret.put("kmi", 1852.0);
619 ret.put("in", 0.0254);
620 ret.put("ft", 0.3048);
621 ret.put("yd", 0.9144);
622 ret.put("mi", 1609.344);
623 ret.put("fathom", 1.8288);
624 ret.put("chain", 20.1168);
625 ret.put("link", 0.201168);
626 ret.put("us-in", 1d/39.37);
627 ret.put("us-ft", 0.304800609601219);
628 ret.put("us-yd", 0.914401828803658);
629 ret.put("us-ch", 20.11684023368047);
630 ret.put("us-mi", 1609.347218694437);
631 ret.put("ind-yd", 0.91439523);
632 ret.put("ind-ft", 0.30479841);
633 ret.put("ind-ch", 20.11669506);
634 ret.put("degree", METER_PER_UNIT_DEGREE);
635 return ret;
636 }
637
638 private static Map<String, Double> getPrimeMeridians() {
639 Map<String, Double> ret = new ConcurrentHashMap<>();
640 try {
641 ret.put("greenwich", 0.0);
642 ret.put("lisbon", parseAngle("9d07'54.862\"W", null));
643 ret.put("paris", parseAngle("2d20'14.025\"E", null));
644 ret.put("bogota", parseAngle("74d04'51.3\"W", null));
645 ret.put("madrid", parseAngle("3d41'16.58\"W", null));
646 ret.put("rome", parseAngle("12d27'8.4\"E", null));
647 ret.put("bern", parseAngle("7d26'22.5\"E", null));
648 ret.put("jakarta", parseAngle("106d48'27.79\"E", null));
649 ret.put("ferro", parseAngle("17d40'W", null));
650 ret.put("brussels", parseAngle("4d22'4.71\"E", null));
651 ret.put("stockholm", parseAngle("18d3'29.8\"E", null));
652 ret.put("athens", parseAngle("23d42'58.815\"E", null));
653 ret.put("oslo", parseAngle("10d43'22.5\"E", null));
654 } catch (ProjectionConfigurationException ex) {
655 throw new RuntimeException();
656 }
657 return ret;
658 }
659}
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