Coverage for pygeodesy/solveBase.py: 95%

208 statements  

« prev     ^ index     » next       coverage.py v7.2.2, created at 2023-10-04 12:08 -0400

1 

2# -*- coding: utf-8 -*- 

3 

4u'''(INTERNAL) Private base classes for L{pygeodesy.geodsolve} and L{pygeodesy.rhumbsolve}. 

5''' 

6 

7from pygeodesy.basics import map2, ub2str, _zip 

8from pygeodesy.constants import DIG 

9# from pygeodesy.ellipsoids import _EWGS84 # from .karney 

10from pygeodesy.errors import _AssertionError, _xkwds_get 

11from pygeodesy.interns import NN, _0_, _BACKSLASH_, _COMMASPACE_, _enquote, \ 

12 _EQUAL_, _Error_, _not_, _SPACE_, _UNUSED_ 

13from pygeodesy.karney import Caps, _CapsBase, _a_ellipsoid, GDict, \ 

14 Precision_, _EWGS84 

15from pygeodesy.lazily import _ALL_DOCS, printf, _sys_version_info2 

16from pygeodesy.named import callername, notOverloaded 

17from pygeodesy.props import Property, Property_RO, property_RO, _update_all 

18from pygeodesy.streprs import Fmt, fstr, fstrzs, pairs, strs 

19# from pygeodesy.units import Precision_ # from .karney 

20from pygeodesy.utily import unroll180, wrap360 # PYCHOK shared 

21 

22from subprocess import PIPE as _PIPE, Popen as _Popen, STDOUT as _STDOUT 

23 

24__all__ = () # nothing public 

25__version__ = '23.09.22' 

26 

27_ERROR_ = 'ERROR' 

28_text_True = dict() if _sys_version_info2 < (3, 7) else dict(text=True) 

29 

30 

31def _cmd_stdin_(cmd, stdin): # PYCHOK no cover 

32 '''(INTERNAL) Cmd line, stdin and caller as sC{str}. 

33 ''' 

34 c = Fmt.PAREN(callername(up=3)) 

35 t = (c,) if stdin is None else (_BACKSLASH_, str(stdin), c) 

36 return _SPACE_.join(cmd + t) 

37 

38 

39def _popen2(cmd, stdin=None): # in .mgrs, .test.base, .test.testMgrs 

40 '''(INTERNAL) Invoke C{B{cmd} tuple} and return C{exitcode} 

41 and all output to C{stdout/-err}. 

42 ''' 

43 p = _Popen(cmd, creationflags=0, 

44 # executable=sys.executable, shell=True, 

45 stdin=_PIPE, stdout=_PIPE, stderr=_STDOUT, 

46 **_text_True) # PYCHOK kwArgs 

47 r = p.communicate(stdin)[0] 

48 return p.returncode, ub2str(r).strip() 

49 

50 

51class _SolveLineSolveBase(_CapsBase): 

52 '''(NTERNAL) Base class for C{_Solve} and C{_LineSolve}. 

53 ''' 

54 _E = _EWGS84 

55 _Error = None 

56 _Exact = True 

57 _invokation = 0 

58 _Names_Direct = \ 

59 _Names_Inverse = () 

60 _prec = Precision_(prec=DIG) 

61 _reverse2 = False 

62 _Solve_name = NN # executable basename 

63 _Solve_path = NN # executable path 

64 _status = None 

65 _unroll = False 

66 _verbose = False 

67 

68 @Property_RO 

69 def a(self): 

70 '''Get the I{equatorial} radius, semi-axis (C{meter}). 

71 ''' 

72 return self.ellipsoid.a 

73 

74 @property_RO 

75 def _cmdBasic(self): # PYCHOK no cover 

76 '''(INTERNAL) I{Must be overloaded}.''' 

77 notOverloaded(self, underOK=True) 

78 

79 @Property_RO 

80 def ellipsoid(self): 

81 '''Get the ellipsoid (C{Ellipsoid}). 

82 ''' 

83 return self._E 

84 

85 @Property_RO 

86 def _e_option(self): 

87 E = self.ellipsoid 

88 if E is _EWGS84: 

89 return () # default 

90 a, f = strs(E.a_f, fmt=Fmt.F, prec=DIG + 3) # not .G! 

91 return ('-e', a, f) 

92 

93 @property 

94 def Exact(self): 

95 '''Get the Solve's C{exact} setting (C{bool}). 

96 ''' 

97 return self._Exact 

98 

99 @Exact.setter # PYCHOK setter! 

100 def Exact(self, Exact): 

101 '''Set the Solve's C{exact} setting (C{bool}), 

102 if C{True} use I{exact} version. 

103 ''' 

104 Exact = bool(Exact) 

105 if self._Exact != Exact: 

106 _update_all(self) 

107 self._Exact = Exact 

108 

109 @Property_RO 

110 def flattening(self): 

111 '''Get the C{ellipsoid}'s I{flattening} (C{scalar}), M{(a - b) / a}, 

112 C{0} for spherical, negative for prolate. 

113 ''' 

114 return self.ellipsoid.f 

115 

116 f = flattening 

117 

118 def _GDictInvoke(self, cmd, floats, Names, *args): 

119 '''(INTERNAL) Invoke C{Solve}, return results as C{GDict}. 

120 ''' 

121 N = len(Names) 

122 if N < 1: 

123 raise _AssertionError(cmd=cmd, Names=Names) 

124 i = fstr(args, prec=DIG, fmt=Fmt.F, sep=_SPACE_) if args else None # not Fmt.G! 

125 t = self._invoke(cmd, stdin=i).lstrip().split() # 12-/+ tuple 

126 if len(t) > N: # PYCHOK no cover 

127 # unzip instrumented name=value pairs to names and values 

128 n, v = _zip(*(p.split(_EQUAL_) for p in t[:-N])) # strict=True 

129 v += tuple(t[-N:]) 

130 n += Names 

131 else: 

132 n, v = Names, t 

133 if self.verbose: # PYCHOK no cover 

134 self._print(_COMMASPACE_.join(map(Fmt.EQUAL, n, map(fstrzs, v)))) 

135 if floats: 

136 v = map(float, v) 

137 r = GDict(_zip(n, v)) # strict=True 

138 return self._iter2tion(r, r) 

139 

140 @property_RO 

141 def invokation(self): 

142 '''Get the most recent C{Solve} invokation number (C{int}). 

143 ''' 

144 return self._invokation 

145 

146 def invoke(self, *options, **stdin): 

147 '''Invoke the C{Solve} executable and return the result. 

148 

149 @arg options: No, one or several C{Solve} command line 

150 options (C{str}s). 

151 @kwarg stdin: Optional input to pass to C{Solve.stdin} (C{str}). 

152 

153 @return: The C{Solve.stdout} and C{.stderr} output (C{str}). 

154 

155 @raise GeodesicError: On any error, including a non-zero return 

156 code from C{GeodSolve}. 

157 

158 @raise RhumbError: On any error, including a non-zero return code 

159 from C{RhumbSolve}. 

160 

161 @note: The C{Solve} return code is in property L{status}. 

162 ''' 

163 c = (self._Solve_path,) + map2(str, options) 

164 i = _xkwds_get(stdin, stdin=None) 

165 r = self._invoke(c, stdin=i) 

166 s = self.status 

167 if s: 

168 raise self._Error(cmd=_cmd_stdin_(c, i), status=s, 

169 txt=_not_(_0_)) 

170 if self.verbose: # PYCHOK no cover 

171 self._print(r) 

172 return r 

173 

174 def _invoke(self, cmd, stdin=None): 

175 '''(INTERNAL) Invoke the C{Solve} executable, with the 

176 given B{C{cmd}} line and optional input to B{C{stdin}}. 

177 ''' 

178 self._invokation += 1 

179 self._status = t = None 

180 if self.verbose: # PYCHOK no cover 

181 t = _cmd_stdin_(cmd, stdin) 

182 self._print(t) 

183 try: # invoke and write to stdin 

184 s, r = _popen2(cmd, stdin) 

185 if len(r) < 6 or r[:5] in (_Error_, _ERROR_): 

186 raise ValueError(r) 

187 except (IOError, OSError, TypeError, ValueError) as x: 

188 raise self._Error(cmd=t or _cmd_stdin_(cmd, stdin), cause=x) 

189 self._status = s 

190 return r 

191 

192 @Property_RO 

193 def _mpd(self): # meter per degree 

194 return self.ellipsoid._Lpd 

195 

196 @property_RO 

197 def _p_option(self): 

198 return '-p', str(self.prec - 5) # -p is distance prec 

199 

200 @Property 

201 def prec(self): 

202 '''Get the precision, number of (decimal) digits (C{int}). 

203 ''' 

204 return self._prec 

205 

206 @prec.setter # PYCHOK setter! 

207 def prec(self, prec): 

208 '''Set the precision for C{angles} in C{degrees}, like C{lat}, C{lon}, 

209 C{azimuth} and C{arc} in number of decimal digits (C{int}, C{0}..L{DIG}). 

210 

211 @note: The precision for C{distance = B{prec} - 5} or up to 

212 10 decimal digits for C{nanometer} and for C{area = 

213 B{prec} - 12} or at most C{millimeter} I{squared}. 

214 ''' 

215 prec = Precision_(prec=prec, high=DIG) 

216 if self._prec != prec: 

217 _update_all(self) 

218 self._prec = prec 

219 

220 def _print(self, line): # PYCHOK no cover 

221 '''(INTERNAL) Print a status line. 

222 ''' 

223 if self.status is not None: 

224 line = _SPACE_(line, Fmt.PAREN(self.status)) 

225 printf('%s %d: %s', self.named2, self.invokation, line) 

226 

227 @Property 

228 def reverse2(self): 

229 '''Get the C{azi2} direction (C{bool}). 

230 ''' 

231 return self._reverse2 

232 

233 @reverse2.setter # PYCHOK setter! 

234 def reverse2(self, reverse2): 

235 '''Set the direction for C{azi2} (C{bool}), if C{True} reverse C{azi2}. 

236 ''' 

237 reverse2 = bool(reverse2) 

238 if self._reverse2 != reverse2: 

239 _update_all(self) 

240 self._reverse2 = reverse2 

241 

242 def _setSolve(self, path, **Solve_path): 

243 '''(INTERNAL) Set the executable C{path}. 

244 ''' 

245 hold = self._Solve_path 

246 if hold != path: 

247 _update_all(self) 

248 self._Solve_path = path 

249 try: 

250 _ = self.version # test path and ... 

251 if self.status: # ... return code 

252 S_p = Solve_path or {self._Solve_name: _enquote(path)} 

253 raise self._Error(status=self.status, txt=_not_(_0_), **S_p) 

254 hold = path 

255 finally: # restore in case of error 

256 if self._Solve_path != hold: 

257 _update_all(self) 

258 self._Solve_path = hold 

259 

260 @property_RO 

261 def status(self): 

262 '''Get the most recent C{Solve} return code (C{int}, C{str}) 

263 or C{None}. 

264 ''' 

265 return self._status 

266 

267 @Property 

268 def unroll(self): 

269 '''Get the C{lon2} unroll'ing (C{bool}). 

270 ''' 

271 return self._unroll 

272 

273 @unroll.setter # PYCHOK setter! 

274 def unroll(self, unroll): 

275 '''Set unroll'ing for C{lon2} (C{bool}), if C{True} unroll C{lon2}, otherwise don't. 

276 ''' 

277 unroll = bool(unroll) 

278 if self._unroll != unroll: 

279 _update_all(self) 

280 self._unroll = unroll 

281 

282 @property 

283 def verbose(self): 

284 '''Get the C{verbose} option (C{bool}). 

285 ''' 

286 return self._verbose 

287 

288 @verbose.setter # PYCHOK setter! 

289 def verbose(self, verbose): 

290 '''Set the C{verbose} option (C{bool}), C{True} prints 

291 a message around each C{RhumbSolve} invokation. 

292 ''' 

293 self._verbose = bool(verbose) 

294 

295 @Property_RO 

296 def version(self): 

297 '''Get the result of C{"GeodSolve --version"} or C{"RhumbSolve --version"}. 

298 ''' 

299 return self.invoke('--version') 

300 

301 

302class _SolveBase(_SolveLineSolveBase): 

303 '''(NTERNAL) Base class for C{_GeodesicSolveBase} and C{_RhumbSolveBase}. 

304 ''' 

305 def __init__(self, a_ellipsoid=_EWGS84, f=None, path=NN, name=NN): 

306 '''New C{Solve} instance. 

307 

308 @arg a_ellipsoid: An ellipsoid (L{Ellipsoid}) or datum (L{Datum}) or 

309 the equatorial radius of the ellipsoid (C{scalar}, 

310 conventionally in C{meter}), see B{C{f}}. 

311 @arg f: The flattening of the ellipsoid (C{scalar}) if B{C{a_ellipsoid}} 

312 is specified as C{scalar}. 

313 @kwarg path: Optionally, the (fully qualified) path to the C{GeodSolve} 

314 or C{RhumbSolve} executable (C{filename}). 

315 @kwarg name: Optional name (C{str}). 

316 

317 @raise TypeError: Invalid B{C{a_ellipsoid}} or B{C{f}}. 

318 ''' 

319 if a_ellipsoid not in (self._E, None): # NOT self.ellipsoid 

320 self._E = _a_ellipsoid(a_ellipsoid, f, name=name) 

321 if name: 

322 self.name = name 

323 if path: 

324 self._setSolve(path) 

325 

326 @Property_RO 

327 def _cmdDirect(self): 

328 '''(INTERNAL) Get the C{Solve} I{Direct} cmd (C{tuple}). 

329 ''' 

330 return self._cmdBasic 

331 

332 @Property_RO 

333 def _cmdInverse(self): 

334 '''(INTERNAL) Get the C{Solve} I{Inverse} cmd (C{tuple}). 

335 ''' 

336 return self._cmdBasic + ('-i',) 

337 

338 def Direct(self, lat1, lon1, azi1, s12, outmask=_UNUSED_): # PYCHOK unused 

339 '''Return the C{Direct} result. 

340 ''' 

341 return self._GDictDirect(lat1, lon1, azi1, False, s12) 

342 

343 def _GDictDirect(self, lat, lon, azi, arcmode, s12_a12, outmask=_UNUSED_, **floats): # PYCHOK for .geodesicx.gxarea 

344 '''(INTERNAL) Get C{_GenDirect}-like result as C{GDict}. 

345 ''' 

346 if arcmode: 

347 raise self._Error(arcmode=arcmode, txt=str(NotImplemented)) 

348 floats = _xkwds_get(floats, floats=True) 

349 return self._GDictInvoke(self._cmdDirect, floats, self._Names_Direct, 

350 lat, lon, azi, s12_a12) 

351 

352 def _GDictInverse(self, lat1, lon1, lat2, lon2, outmask=_UNUSED_, **floats): # PYCHOK for .geodesicx.gxarea 

353 '''(INTERNAL) Get C{_GenInverse}-like result as C{GDict}, but 

354 I{without} C{_SALPs_CALPs_}. 

355 ''' 

356 floats = _xkwds_get(floats, floats=True) 

357 return self._GDictInvoke(self._cmdInverse, floats, self._Names_Inverse, 

358 lat1, lon1, lat2, lon2) 

359 

360 def Inverse(self, lat1, lon1, lat2, lon2, outmask=_UNUSED_): # PYCHOK unused 

361 '''Return the C{Inverse} result. 

362 ''' 

363 return self._GDictInverse(lat1, lon1, lat2, lon2) 

364 

365 def Inverse1(self, lat1, lon1, lat2, lon2, wrap=False): 

366 '''Return the non-negative, I{angular} distance in C{degrees}. 

367 ''' 

368 # see .FrechetKarney.distance, .HausdorffKarney._distance 

369 # and .HeightIDWkarney._distances 

370 _, lon2 = unroll180(lon1, lon2, wrap=wrap) # self.LONG_UNROLL 

371 r = self._GDictInverse(lat1, lon1, lat2, lon2, floats=False) 

372 # XXX self.DISTANCE needed for 'a12'? 

373 return abs(float(r.a12)) 

374 

375 def _toStr(self, prec=6, sep=_COMMASPACE_, **Solve): # PYCHOK signature 

376 '''(INTERNAL) Return this C{_Solve} as string.. 

377 ''' 

378 d = dict(ellipsoid=self.ellipsoid, invokation=self.invokation, 

379 status=self.status, **Solve) 

380 return sep.join(pairs(d, prec=prec)) 

381 

382 

383class _SolveLineBase(_SolveLineSolveBase): 

384 '''(NTERNAL) Base class for C{GeodesicLineSolve} and C{RhumbLineSolve}. 

385 ''' 

386# _caps = 0 

387# _lla1 = {} 

388 _solve = None # L{GeodesicSolve} or L{RhumbSolve} instance 

389 

390 def __init__(self, solve, lat1, lon1, caps, name, **azi): 

391 self._caps = caps | Caps._LINE 

392 self._debug = solve._debug & Caps._DEBUG_ALL 

393 self._lla1 = GDict(lat1=lat1, lon1=lon1, **azi) 

394 self._solve = solve 

395 

396 n = name or solve.name 

397 if n: 

398 self.name = n 

399 

400 @Property_RO 

401 def _cmdDistance(self): 

402 '''(INTERNAL) Get the C{GeodSolve} I{-L} cmd (C{tuple}). 

403 ''' 

404 def _lla3(lat1=0, lon1=0, **azi): 

405 _, azi = azi.popitem() 

406 return lat1, lon1, azi 

407 

408 t = strs(_lla3(**self._lla1), prec=DIG, fmt=Fmt.F) # self._solve.prec 

409 return self._cmdBasic + ('-L',) + t 

410 

411 @property_RO 

412 def ellipsoid(self): 

413 '''Get the ellipsoid (C{Ellipsoid}). 

414 ''' 

415 return self._solve.ellipsoid 

416 

417 @Property_RO 

418 def lat1(self): 

419 '''Get the latitude of the first point (C{degrees}). 

420 ''' 

421 return self._lla1.lat1 

422 

423 @Property_RO 

424 def lon1(self): 

425 '''Get the longitude of the first point (C{degrees}). 

426 ''' 

427 return self._lla1.lon1 

428 

429 def _toStr(self, prec=6, sep=_COMMASPACE_, **solve): # PYCHOK signature 

430 '''(INTERNAL) Return this C{_LineSolve} as string.. 

431 ''' 

432 d = dict(ellipsoid=self.ellipsoid, invokation=self._solve.invokation, 

433 lat1=self.lat1, lon1=self.lon1, 

434 status=self._solve.status, **solve) 

435 return sep.join(pairs(d, prec=prec)) 

436 

437 

438__all__ += _ALL_DOCS(_SolveBase, _SolveLineBase, _SolveLineSolveBase) 

439 

440# **) MIT License 

441# 

442# Copyright (C) 2016-2023 -- mrJean1 at Gmail -- All Rights Reserved. 

443# 

444# Permission is hereby granted, free of charge, to any person obtaining a 

445# copy of this software and associated documentation files (the "Software"), 

446# to deal in the Software without restriction, including without limitation 

447# the rights to use, copy, modify, merge, publish, distribute, sublicense, 

448# and/or sell copies of the Software, and to permit persons to whom the 

449# Software is furnished to do so, subject to the following conditions: 

450# 

451# The above copyright notice and this permission notice shall be included 

452# in all copies or substantial portions of the Software. 

453# 

454# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 

455# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 

456# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 

457# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 

458# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 

459# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 

460# OTHER DEALINGS IN THE SOFTWARE.