# Coverage for pygeodesy/nvectorBase.py : 91%

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 | # -*- coding: utf-8 -*- u'''(INTERNAL) Base classes L{LatLonNvectorBase} and L{NvectorBase} and function L{sumOf} for C{N-vectorial} ellipsoidal and spherical C{Cartesian}s and C{LatLon}s. Pure Python implementation of C{n-vector}-based geodesy tools for ellipsoidal earth models, transcribed from JavaScript originals by I{(C) Chris Veness 2005-2016} and published under the same MIT Licence**, see U{Vector-based geodesy <https://www.Movable-Type.co.UK/scripts/latlong-vectors.html>}. @newfield example: Example, Examples ''' from pygeodesy.basics import len2, scalar, property_doc_, property_RO from pygeodesy.ecef import EcefVeness from pygeodesy.fmath import fsum, hypot_ from pygeodesy.formy import n_xyz2latlon, n_xyz2philam from pygeodesy.latlonBase import LatLonBase from pygeodesy.lazily import _ALL_DOCS from pygeodesy.named import Vector3Tuple, Vector4Tuple, _xattrs from pygeodesy.vector3d import Vector3d, VectorError, \ sumOf as _sumOf, _xyzhdn6 # from math import atan2, cos, sin # all public constants, classes and functions __all__ = _ALL_DOCS('LatLonNvectorBase') + ( 'NorthPole', 'SouthPole', # constants 'NvectorBase', # classes 'sumOf') # functions __version__ = '20.03.15' class NvectorBase(Vector3d): # XXX kept private '''Base class for ellipsoidal and spherical C{Nvector}s. ''' _datum = None #: (INTERNAL) L{Datum}, overriden. _Ecef = EcefVeness #: (INTERNAL) Preferred C{Ecef...} class, backward compatible. _h = 0 #: (INTERNAL) Height (C{meter}). _H = '' #: Heigth prefix (C{str}), '↑' in JS version _latlon = None #: (INTERNAL) Cached latlon (L{Latlon2Tuple}). _philam = None #: (INTERNAL) Cached philam (L{PhiLam2Tuple}). def __init__(self, x, y=None, z=None, h=0, ll=None, datum=None, name=''): '''New n-vector normal to the earth's surface. @param x: An C{Nvector}, L{Vector3Tuple}, L{Vector4Tuple} or the C{X} coordinate (C{scalar}). @param y: The C{Y} coordinate (C{scalar}) if B{C{x}} C{scalar}. @param z: The C{Z} coordinate (C{scalar}) if B{C{x}} C{scalar}. @keyword h: Optional height above surface (C{meter}). @keyword ll: Optional, original latlon (C{LatLon}). @keyword datum: Optional, I{pass-thru} datum (C{Datum}). @keyword name: Optional name (C{str}). @raise TypeError: Non-scalar B{C{x}}, B{C{y}} or B{C{z}} coordinate or B{C{x}} not an C{Nvector}, L{Vector3Tuple} or L{Vector4Tuple}. @example: >>> from pygeodesy.sphericalNvector import Nvector >>> v = Nvector(0.5, 0.5, 0.7071, 1) >>> v.toLatLon() # 45.0°N, 045.0°E, +1.00m ''' x, y, z, h, d, n = _xyzhdn6(x, y, z, h, datum, ll) Vector3d.__init__(self, x, y, z, ll=ll, name=name or n) if h: self.h = h if d: # just pass-thru self._datum = d def _update(self, updated, *attrs): '''(INTERNAL) Zap cached attributes if updated. ''' if updated: Vector3d._update(self, updated, '_latlon', '_philam', *attrs) @property_RO def datum(self): '''Get the I{pass-thru} datum (C{Datum}) or C{None}. ''' return self._datum @property_RO def Ecef(self): '''Get the ECEF I{class} (L{EcefKarney} or L{EcefVeness}). ''' return self._Ecef @property_doc_(' the height above surface (C{meter}).') def h(self): '''Get the height above surface (C{meter}). ''' return self._h @h.setter # PYCHOK setter! def h(self, h): '''Set the height above surface. @param h: New height (C{meter}). @raise TypeError: If B{C{h}} invalid. @raise VectorError: If B{C{h}} invalid. ''' h = scalar(h, None, name='h', Error=VectorError) self._update(h != self._h, '_latlon', '_philam') self._h = h @property_doc_(' the height prefix (C{str}).') def H(self): '''Get the height prefix (C{str}). ''' return self._H @H.setter # PYCHOK setter! def H(self, H): '''Set the height prefix. @param H: New height prefix (C{str}). ''' self._H = str(H) if H else '' @property_RO def isEllipsoidal(self): '''Check whether this n-vector is ellipsoidal (C{bool} or C{None} if unknown). ''' return self.datum.isEllipsoidal if self._datum else None @property_RO def isSpherical(self): '''Check whether this n-vector is spherical (C{bool} or C{None} if unknown). ''' return self.datum.isSpherical if self._datum else None @property_RO def lam(self): '''Get the (geodetic) longitude in C{radians} (C{float}). ''' return self.philamheight.lam @property_RO def lat(self): '''Get the (geodetic) latitude in C{degrees} (C{float}). ''' return self.latlonheight.lat @property_RO def latlon(self): '''Get the (geodetic) lat-, longitude in C{degrees} (L{LatLon2Tuple}C{(lat, lon)}). ''' if self._latlon is None: self._latlon = n_xyz2latlon(self.x, self.y, self.z) return self._xnamed(self._latlon) @property_RO def latlonheight(self): '''Get the (geodetic) lat-, longitude in C{degrees} and height (L{LatLon3Tuple}C{(lat, lon, height)}). ''' return self._xnamed(self.latlon.to3Tuple(self.h)) @property_RO def lon(self): '''Get the (geodetic) longitude in C{degrees} (C{float}). ''' return self.latlonheight.lon @property_RO def phi(self): '''Get the (geodetic) latitude in C{radians} (C{float}). ''' return self.philamheight.phi @property_RO def philam(self): '''Get the (geodetic) lat-, longitude in C{radians} (L{PhiLam2Tuple}C{(phi, lam)}). ''' if self._philam is None: self._philam = n_xyz2philam(self.x, self.y, self.z) return self._xnamed(self._philam) @property_RO def philamheight(self): '''Get the (geodetic) lat-, longitude in C{radians} and height (L{PhiLam3Tuple}C{(phi, lam, height)}). ''' return self._xnamed(self.philam.to3Tuple(self.h)) def to2ab(self): # PYCHOK no cover '''DEPRECATED, use property C{philam}. @return: A L{PhiLam2Tuple}C{(phi, lam)}. ''' return self.philam def to3abh(self, height=None): # PYCHOK no cover '''DEPRECATED, use method C{philamheight} or C{philam.to3Tuple(B{height})}. @keyword height: Optional height, overriding this n-vector's height (C{meter}). @return: A L{PhiLam3Tuple}C{(phi, lam, height)}. ''' return self.philamheight if height in (None, self.h) else \ self.philam.to3Tuple(height) def toCartesian(self, h=None, Cartesian=None, datum=None, **kwds): '''Convert this n-vector to C{Nvector}-based cartesian (ECEF) coordinates. @keyword height: Optional height, overriding this n-vector's height (C{meter}). @keyword Cartesian: Optional (sub-)class to return the (ECEF)coordinates (L{Cartesian}). @keyword datum: Optional, spherical datum (C{Datum}). @keyword kwds: Optional, additional C{name=value} pairs for B{C{Cartesian}} instance, provided B{C{Cartesian}} is not C{None}. @return: Cartesian (ECEF) coordinates (B{C{Cartesian}}). @raise TypeError: Invalid B{C{Cartesian}}. @example: >>> v = Nvector(0.5, 0.5, 0.7071) >>> c = v.toCartesian() # [3194434, 3194434, 4487327] >>> p = c.toLatLon() # 45.0°N, 45.0°E ''' x, y, z = self.x, self.y, self.z if h is None: h = self.h d = datum or self.datum E = d.ellipsoid # Kenneth Gade eqn (22) n = E.b / hypot_(x * E.a_b, y * E.a_b, z) r = h + n * E.a_b**2 c = self.Ecef(d).reverse(x * r, y * r, z * (n + h), M=True) if Cartesian is not None: # class or .classof c = Cartesian(c, **kwds) return self._xnamed(c) def to2ll(self): # PYCHOK no cover '''DEPRECATED, use property C{latlon}. @return: A L{LatLon2Tuple}C{(lat, lon)}. ''' return self.latlon def to3llh(self, height=None): # PYCHOK no cover '''DEPRECATED, use property C{latlonheight} or C{latlon.to3Tuple(B{height})}. @keyword height: Optional height, overriding this n-vector's height (C{meter}). @return: A L{LatLon3Tuple}C{(lat, lon, height)}. ''' return self.latlonheight if height in (None, self.h) else \ self.latlon.to3Tuple(height) def toLatLon(self, height=None, LatLon=None, datum=None, **kwds): '''Convert this n-vector to an C{Nvector}-based geodetic point. @keyword height: Optional height, overriding this n-vector's height (C{meter}). @keyword LatLon: Optional (sub-)class to return the point (L{LatLon}) or C{None}. @keyword datum: Optional, spherical datum (C{Datum}). @keyword kwds: Optional, additional C{name=value} pairs for B{C{LatLon}} instance, provided B{C{LatLon}} is not C{None}. @return: The B{C{LatLon}} point (L{LatLon}) or an L{Ecef9Tuple}C{(x, y, z, lat, lon, height, C, M, datum)} if B{C{LatLon}} is C{None}. @raise TypeError: Invalid B{C{LatLon}}. @example: >>> v = Nvector(0.5, 0.5, 0.7071) >>> p = v.toLatLon() # 45.0°N, 45.0°E ''' # use self.Cartesian(Cartesian=None) if h == self.h and # d == self.datum, for better accuracy of the height h = self.h if height is None else height r = self.Ecef(datum or self.datum).forward(self.latlon, height=h, M=True) if LatLon is not None: # class or .classof r = LatLon(r.lat, r.lon, r.height, datum=r.datum, **kwds) return self._xnamed(r) def toStr(self, prec=5, fmt='(%s)', sep=', '): # PYCHOK expected '''Return a string representation of this n-vector. Height component is only included if non-zero. @keyword prec: Optional number of decimals, unstripped (C{int}). @keyword fmt: Optional enclosing backets format (C{str}). @keyword sep: Optional separator between components (C{str}). @return: Comma-separated C{"(x, y, z [, h])"} enclosed in B{C{fmt}} brackets (C{str}). @example: >>> Nvector(0.5, 0.5, 0.7071).toStr() # (0.5, 0.5, 0.7071) >>> Nvector(0.5, 0.5, 0.7071, 1).toStr(-3) # (0.500, 0.500, 0.707, +1.00) ''' t = Vector3d.toStr(self, prec=prec, fmt='%s', sep=sep) if self.h: t = '%s%s%s%+.2f' % (t, sep, self.H, self.h) return fmt % (t,) def toVector3d(self, norm=True): '''Convert this n-vector to a 3-D vector, I{ignoring the height}. @keyword norm: Normalize the 3-D vector (C{bool}). @return: The (normalized) vector (L{Vector3d}). ''' u = self.unit() v = Vector3d(u.x, u.y, u.z, name=self.name) return v.unit() if norm else v def to4xyzh(self, h=None): # PYCHOK no cover '''DEPRECATED, use property C{xyzh} or C{xyz.to4Tuple(B{h})}. ''' return self.xyzh if h in (None, self.h) else \ self._xnamed(Vector4Tuple(self.x, self.y, self.z, h)) def unit(self, ll=None): '''Normalize this n-vector to unit length. @keyword ll: Optional, original latlon (C{LatLon}). @return: Normalized vector (C{Nvector}). ''' if self._united is None: u = Vector3d.unit(self, ll=ll) # .copy() self._united = u._united = _xattrs(u, self, '_h') return self._united @property_RO def xyzh(self): '''Get this n-vector's components (L{Vector4Tuple}C{(x, y, z, h)}) ''' return self._xnamed(self.xyz.to4Tuple(self.h)) NorthPole = NvectorBase(0, 0, +1, name='NorthPole') #: North pole (C{Nvector}). SouthPole = NvectorBase(0, 0, -1, name='SouthPole') #: South pole (C{Nvector}). class _N_vector_(NvectorBase): '''(INTERNAL) Minimal, low-overhead C{n-vector}. ''' def __init__(self, x, y, z, h=0): self._x, self._y, self._z = x, y, z if h: self._h = h class LatLonNvectorBase(LatLonBase): '''(INTERNAL) Base class for n-vector-based ellipsoidal and spherical C{LatLon} classes. ''' def _update(self, updated, *attrs, **kwds): # PYCHOK _Nv=None '''(INTERNAL) Zap cached attributes if updated. @see: C{ellipsoidalNvector.LatLon} and C{sphericalNvector.LatLon} for the special case of B{C{_Nv}}. ''' if updated: _Nv = kwds.pop('_Nv', None) if _Nv is not None: if _Nv._fromll is not None: _Nv._fromll = None self._Nv = None LatLonBase._update(self, updated, *attrs) def others(self, other, name='other'): '''Refine the class comparison. @param other: The other point (C{LatLon}). @keyword name: Optional, other's name (C{str}). @raise TypeError: Incompatible B{C{other}} C{type}. ''' try: LatLonBase.others(self, other, name=name) except TypeError: if not isinstance(other, NvectorBase): raise def toNvector(self, Nvector=NvectorBase, **kwds): # PYCHOK signature '''Convert this point to C{Nvector} components, I{including height}. @keyword kwds: Optional, additional B{C{Nvector}} keyword arguments, ignored if C{B{Nvector}=None}. @return: An B{C{Nvector}} or a L{Vector4Tuple}C{(x, y, z, h)} if C{B{Nvector}=None}. @raise TypeError: Invalid B{C{Nvector}} or B{C{kwds}}. ''' return LatLonBase.toNvector(self, Nvector=Nvector, **kwds) def sumOf(nvectors, Vector=None, h=None, **kwds): '''Return the vectorial sum of two or more n-vectors. @param nvectors: Vectors to be added (C{Nvector}[]). @keyword Vector: Optional class for the vectorial sum (C{Nvector}) or C{None}. @keyword h: Optional height, overriding the mean height (C{meter}). @keyword kwds: Optional, additional B{C{Vector}} keyword arguments, ignored if C{B{Vector}=None}. @return: Vectorial sum (B{C{Vector}}) or a L{Vector4Tuple}C{(x, y, z, h)} if C{B{Vector}=None}. @raise VectorError: No B{C{nvectors}}. ''' n, nvectors = len2(nvectors) if n < 1: raise VectorError('no nvectors: %r' & (n,)) if h is None: h = fsum(v.h for v in nvectors) / float(n) if Vector is None: r = _sumOf(nvectors, Vector=Vector3Tuple).to4Tuple(h) else: r = _sumOf(nvectors, Vector=Vector, h=h, **kwds) return r # **) MIT License # # Copyright (C) 2016-2020 -- mrJean1 at Gmail -- All Rights Reserved. # # Permission is hereby granted, free of charge, to any person obtaining a # copy of this software and associated documentation files (the "Software"), # to deal in the Software without restriction, including without limitation # the rights to use, copy, modify, merge, publish, distribute, sublicense, # and/or sell copies of the Software, and to permit persons to whom the # Software is furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included # in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR # OTHER DEALINGS IN THE SOFTWARE.