source: josm/trunk/scripts/BuildProjectionDefinitions.java@ 13598

Last change on this file since 13598 was 13598, checked in by Don-vip, 8 years ago

see #16129 - add new projections and support for new format of ESRI file
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File size: 12.9 KB
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1// License: GPL. For details, see LICENSE file.
2
3import java.io.BufferedWriter;
4import java.io.File;
5import java.io.FileOutputStream;
6import java.io.IOException;
7import java.io.OutputStreamWriter;
8import java.nio.charset.StandardCharsets;
9import java.util.Arrays;
10import java.util.LinkedHashMap;
11import java.util.List;
12import java.util.Locale;
13import java.util.Map;
14import java.util.TreeMap;
15
16import org.openstreetmap.josm.data.projection.CustomProjection;
17import org.openstreetmap.josm.data.projection.CustomProjection.Param;
18import org.openstreetmap.josm.data.projection.ProjectionConfigurationException;
19import org.openstreetmap.josm.data.projection.Projections;
20import org.openstreetmap.josm.data.projection.Projections.ProjectionDefinition;
21import org.openstreetmap.josm.data.projection.proj.Proj;
22
23/**
24 * Generates the list of projections by combining two sources: The list from the
25 * proj.4 project and a list maintained by the JOSM team.
26 */
27public class BuildProjectionDefinitions {
28
29 private static final String PROJ_DIR = "data_nodist/projection";
30 private static final String JOSM_EPSG_FILE = "josm-epsg";
31 private static final String PROJ4_EPSG_FILE = "epsg";
32 private static final String PROJ4_ESRI_FILE = "esri";
33 private static final String OUTPUT_EPSG_FILE = "data/projection/custom-epsg";
34
35 private static final Map<String, ProjectionDefinition> epsgProj4 = new LinkedHashMap<>();
36 private static final Map<String, ProjectionDefinition> esriProj4 = new LinkedHashMap<>();
37 private static final Map<String, ProjectionDefinition> epsgJosm = new LinkedHashMap<>();
38
39 private static final boolean printStats = false;
40
41 // statistics:
42 private static int noInJosm = 0;
43 private static int noInProj4 = 0;
44 private static int noDeprecated = 0;
45 private static int noGeocent = 0;
46 private static int noBaseProjection = 0;
47 private static int noEllipsoid = 0;
48 private static int noNadgrid = 0;
49 private static int noDatumgrid = 0;
50 private static int noJosm = 0;
51 private static int noProj4 = 0;
52 private static int noEsri = 0;
53 private static int noOmercNoBounds = 0;
54 private static int noEquatorStereo = 0;
55
56 private static final Map<String, Integer> baseProjectionMap = new TreeMap<>();
57 private static final Map<String, Integer> ellipsoidMap = new TreeMap<>();
58 private static final Map<String, Integer> nadgridMap = new TreeMap<>();
59 private static final Map<String, Integer> datumgridMap = new TreeMap<>();
60
61 private static List<String> knownGeoidgrids;
62 private static List<String> knownNadgrids;
63
64 /**
65 * Program entry point
66 * @param args command line arguments (not used)
67 * @throws IOException if any I/O error occurs
68 */
69 public static void main(String[] args) throws IOException {
70 buildList(args[0]);
71 }
72
73 static List<String> initList(String baseDir, String ext) {
74 return Arrays.asList(new File(baseDir + File.separator + PROJ_DIR)
75 .list((dir, name) -> !name.contains(".") || name.toLowerCase(Locale.ENGLISH).endsWith(ext)));
76 }
77
78 static void initMap(String baseDir, String file, Map<String, ProjectionDefinition> map) throws IOException {
79 for (ProjectionDefinition pd : Projections.loadProjectionDefinitions(
80 baseDir + File.separator + PROJ_DIR + File.separator + file)) {
81 map.put(pd.code, pd);
82 }
83 }
84
85 static void buildList(String baseDir) throws IOException {
86 initMap(baseDir, JOSM_EPSG_FILE, epsgJosm);
87 initMap(baseDir, PROJ4_EPSG_FILE, epsgProj4);
88 initMap(baseDir, PROJ4_ESRI_FILE, esriProj4);
89
90 knownGeoidgrids = initList(baseDir, ".gtx");
91 knownNadgrids = initList(baseDir, ".gsb");
92
93 try (FileOutputStream output = new FileOutputStream(baseDir + File.separator + OUTPUT_EPSG_FILE);
94 BufferedWriter out = new BufferedWriter(new OutputStreamWriter(output, StandardCharsets.UTF_8))) {
95 out.write("## This file is autogenerated, do not edit!\n");
96 out.write("## Run ant task \"epsg\" to rebuild.\n");
97 out.write(String.format("## Source files are %s (can be changed), %s and %s (copied from the proj.4 project).%n",
98 JOSM_EPSG_FILE, PROJ4_EPSG_FILE, PROJ4_ESRI_FILE));
99 out.write("##\n");
100 out.write("## Entries checked and maintained by the JOSM team:\n");
101 for (ProjectionDefinition pd : epsgJosm.values()) {
102 write(out, pd);
103 noJosm++;
104 }
105 out.write("## Other supported projections (source: proj.4):\n");
106 for (ProjectionDefinition pd : epsgProj4.values()) {
107 if (doInclude(pd, true, false)) {
108 write(out, pd);
109 noProj4++;
110 }
111 }
112 out.write("## ESRI-specific projections (source: proj.4):\n");
113 for (ProjectionDefinition pd : esriProj4.values()) {
114 pd = new ProjectionDefinition(pd.code, "ESRI: " + pd.name, pd.definition);
115 if (doInclude(pd, true, true)) {
116 write(out, pd);
117 noEsri++;
118 }
119 }
120 }
121
122 if (printStats) {
123 System.out.println(String.format("loaded %d entries from %s", epsgJosm.size(), JOSM_EPSG_FILE));
124 System.out.println(String.format("loaded %d entries from %s", epsgProj4.size(), PROJ4_EPSG_FILE));
125 System.out.println(String.format("loaded %d entries from %s", esriProj4.size(), PROJ4_ESRI_FILE));
126 System.out.println();
127 System.out.println("some entries from proj.4 have not been included:");
128 System.out.println(String.format(" * already in the maintained JOSM list: %d entries", noInJosm));
129 if (noInProj4 > 0) {
130 System.out.println(String.format(" * ESRI already in the standard EPSG list: %d entries", noInProj4));
131 }
132 System.out.println(String.format(" * deprecated: %d entries", noDeprecated));
133 System.out.println(String.format(" * using +proj=geocent, which is 3D (X,Y,Z) and not useful in JOSM: %d entries", noGeocent));
134 if (noEllipsoid > 0) {
135 System.out.println(String.format(" * unsupported ellipsoids: %d entries", noEllipsoid));
136 System.out.println(" in particular: " + ellipsoidMap);
137 }
138 if (noBaseProjection > 0) {
139 System.out.println(String.format(" * unsupported base projection: %d entries", noBaseProjection));
140 System.out.println(" in particular: " + baseProjectionMap);
141 }
142 if (noDatumgrid > 0) {
143 System.out.println(String.format(" * requires data file for vertical datum conversion: %d entries", noDatumgrid));
144 System.out.println(" in particular: " + datumgridMap);
145 }
146 if (noNadgrid > 0) {
147 System.out.println(String.format(" * requires data file for datum conversion: %d entries", noNadgrid));
148 System.out.println(" in particular: " + nadgridMap);
149 }
150 if (noOmercNoBounds > 0) {
151 System.out.println(String.format(" * projection is Oblique Mercator (requires bounds), but no bounds specified: %d entries", noOmercNoBounds));
152 }
153 if (noEquatorStereo > 0) {
154 System.out.println(String.format(" * projection is Equatorial Stereographic (see #15970): %d entries", noEquatorStereo));
155 }
156 System.out.println();
157 System.out.println(String.format("written %d entries from %s", noJosm, JOSM_EPSG_FILE));
158 System.out.println(String.format("written %d entries from %s", noProj4, PROJ4_EPSG_FILE));
159 System.out.println(String.format("written %d entries from %s", noEsri, PROJ4_ESRI_FILE));
160 }
161 }
162
163 static void write(BufferedWriter out, ProjectionDefinition pd) throws IOException {
164 out.write("# " + pd.name + "\n");
165 out.write("<"+pd.code.substring("EPSG:".length())+"> "+pd.definition+" <>\n");
166 }
167
168 static boolean doInclude(ProjectionDefinition pd, boolean noIncludeJosm, boolean noIncludeProj4) {
169
170 boolean result = true;
171
172 if (noIncludeJosm) {
173 // we already have this projection
174 if (epsgJosm.containsKey(pd.code)) {
175 result = false;
176 noInJosm++;
177 }
178 }
179 if (noIncludeProj4) {
180 // we already have this projection
181 if (epsgProj4.containsKey(pd.code)) {
182 result = false;
183 noInProj4++;
184 }
185 }
186
187 // exclude deprecated/discontinued projections
188 // EPSG:4296 is also deprecated, but this is not mentioned in the name
189 String lowName = pd.name.toLowerCase(Locale.ENGLISH);
190 if (lowName.contains("deprecated") || lowName.contains("discontinued") || pd.code.equals("EPSG:4296")) {
191 result = false;
192 noDeprecated++;
193 }
194
195 Map<String, String> parameters;
196 try {
197 parameters = CustomProjection.parseParameterList(pd.definition, true);
198 } catch (ProjectionConfigurationException ex) {
199 throw new RuntimeException(pd.code+":"+ex);
200 }
201 String proj = parameters.get(CustomProjection.Param.proj.key);
202
203 // +proj=geocent is 3D (X,Y,Z) "projection" - this is not useful in
204 // JOSM as we only deal with 2D maps
205 if ("geocent".equals(proj)) {
206 result = false;
207 noGeocent++;
208 }
209
210 // no support for NAD27 datum, as it requires a conversion database
211 String datum = parameters.get(CustomProjection.Param.datum.key);
212 if ("NAD27".equals(datum)) {
213 result = false;
214 noDatumgrid++;
215 }
216
217 // requires vertical datum conversion database (.gtx)
218 String geoidgrids = parameters.get("geoidgrids");
219 if (geoidgrids != null && !"@null".equals(geoidgrids) && !knownGeoidgrids.contains(geoidgrids)) {
220 result = false;
221 noDatumgrid++;
222 incMap(datumgridMap, geoidgrids);
223 }
224
225 // requires datum conversion database (.gsb)
226 String nadgrids = parameters.get("nadgrids");
227 if (nadgrids != null && !"@null".equals(nadgrids) && !knownNadgrids.contains(nadgrids)) {
228 result = false;
229 noNadgrid++;
230 incMap(nadgridMap, nadgrids);
231 }
232
233 // exclude entries where we don't support the base projection
234 Proj bp = Projections.getBaseProjection(proj);
235 if (result && !"utm".equals(proj) && bp == null) {
236 result = false;
237 noBaseProjection++;
238 if (!"geocent".equals(proj)) {
239 incMap(baseProjectionMap, proj);
240 }
241 }
242
243 // exclude entries where we don't support the base ellipsoid
244 String ellps = parameters.get("ellps");
245 if (result && ellps != null && Projections.getEllipsoid(ellps) == null) {
246 result = false;
247 noEllipsoid++;
248 incMap(ellipsoidMap, ellps);
249 }
250
251 if (result && "omerc".equals(proj) && !parameters.containsKey(CustomProjection.Param.bounds.key)) {
252 result = false;
253 noOmercNoBounds++;
254 }
255
256 final double EPS10 = 1.e-10;
257
258 String lat0 = parameters.get("lat_0");
259 if (lat0 != null) {
260 try {
261 final double latitudeOfOrigin = Math.toRadians(CustomProjection.parseAngle(lat0, Param.lat_0.key));
262 // TODO: implement equatorial stereographic, see https://josm.openstreetmap.de/ticket/15970
263 if (result && "stere".equals(proj) && Math.abs(latitudeOfOrigin) < EPS10) {
264 result = false;
265 noEquatorStereo++;
266 }
267
268 // exclude entries which need geodesic computation (equatorial/oblique azimuthal equidistant)
269 if (result && "aeqd".equals(proj)) {
270 final double HALF_PI = Math.PI / 2;
271 if (Math.abs(latitudeOfOrigin - HALF_PI) >= EPS10 &&
272 Math.abs(latitudeOfOrigin + HALF_PI) >= EPS10) {
273 // See https://josm.openstreetmap.de/ticket/16129#comment:21
274 result = false;
275 }
276 }
277 } catch (NumberFormatException | ProjectionConfigurationException e) {
278 e.printStackTrace();
279 result = false;
280 }
281 }
282
283 if (result && "0.0".equals(parameters.get("rf"))) {
284 // Proj fails with "reciprocal flattening (1/f) = 0" for
285 result = false; // FIXME Only for some projections?
286 }
287
288 String k_0 = parameters.get("k_0");
289 if (result && k_0 != null && k_0.startsWith("-")) {
290 // Proj fails with "k <= 0" for ESRI:102470
291 result = false;
292 }
293
294 return result;
295 }
296
297 private static void incMap(Map<String, Integer> map, String key) {
298 map.putIfAbsent(key, 0);
299 map.put(key, map.get(key)+1);
300 }
301}
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