# Coverage for pygeodesy/css.py : 97%

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Classes L{CassiniSoldner}, L{Css} and L{CSSError} requiring I{Charles Karney}'s U{geographiclib <https://PyPI.org/project/geographiclib>} Python package to be installed. ''' from pygeodesy.basics import istuplist, neg, _umod_360, _xinstanceof, \ _xsubclassof from pygeodesy.datums import _ellipsoidal_datum, _WGS84 from pygeodesy.ellipsoidalBase import LatLonEllipsoidalBase as _LLEB from pygeodesy.errors import _ValueError, _xdatum, _xellipsoidal, _xkwds from pygeodesy.interns import NN, _azimuth_, _COMMASPACE_, _datum_, \ _easting_, _lat_, _lon_, _m_, _name_, \ _northing_, _reciprocal_, _SPACE_, \ _0_0, _0_5, _90_0 from pygeodesy.interns import _C_ # PYCHOK used! from pygeodesy.karney import _atan2d, _copysign, _diff182, _norm2, \ _norm180, _signBit, _sincos2d from pygeodesy.lazily import _ALL_LAZY, _ALL_MODS as _MODS from pygeodesy.named import _NamedBase, _NamedTuple, nameof from pygeodesy.namedTuples import EasNor2Tuple, EasNor3Tuple, \ LatLon2Tuple, LatLon4Tuple, _LL4Tuple from pygeodesy.props import deprecated_Property_RO, Property, \ Property_RO, _update_all from pygeodesy.streprs import Fmt, _fstrENH2, _fstrLL0, _xzipairs from pygeodesy.units import Bearing, Degrees, Easting, Height, \ Lat_, Lon_, Northing, Scalar __all__ = _ALL_LAZY.css __version__ = '22.06.26' def _CS0(cs0): '''(INTERNAL) Get/set default projection. ''' if cs0 is None: cs0 = Css._CS0 if cs0 is None: Css._CS0 = cs0 = CassiniSoldner(_0_0, _0_0, name='Default') else: _xinstanceof(CassiniSoldner, cs0=cs0) return cs0 class CSSError(_ValueError): '''Cassini-Soldner (CSS) conversion or other L{Css} issue. ''' pass class CassiniSoldner(_NamedBase): '''Cassini-Soldner projection, a Python version of I{Karney}'s C++ class U{CassiniSoldner <https://GeographicLib.SourceForge.io/C++/doc/classGeographicLib_1_1CassiniSoldner.html>}. ''' _cb0 = _0_0 _datum = _WGS84 # L{Datum} _geodesic = None _latlon0 = () _meridian = None _sb0 = _0_0 def __init__(self, lat0, lon0, datum=_WGS84, name=NN): '''New L{CassiniSoldner} projection. @arg lat0: Latitude of center point (C{degrees90}). @arg lon0: Longitude of center point (C{degrees180}). @kwarg datum: Optional datum or ellipsoid (L{Datum}, L{Ellipsoid}, L{Ellipsoid2} or L{a_f2Tuple}). @kwarg name: Optional name (C{str}). @raise CSSError: Invalid B{C{lat}} or B{C{lon}}. @example: >>> p = CassiniSoldner(48 + 50/60.0, 2 + 20/60.0) # Paris >>> p.forward(50.9, 1.8) # Calais (-37518.854545, 230003.561828) >>> p.reverse4(-38e3, 230e3) (50.899937, 1.793161, 89.580797, 0.999982) ''' if datum not in (None, self._datum): self._datum = _xellipsoidal(datum=_ellipsoidal_datum(datum, name=name)) if name: self.name = name self.reset(lat0, lon0) @Property def datum(self): '''Get the datum (L{Datum}). ''' return self._datum @datum.setter # PYCHOK setter! def datum(self, datum): '''Set the datum or ellipsoid (L{Datum}, L{Ellipsoid}, L{Ellipsoid2} or L{a_f2Tuple}) or C{None} for the default. ''' d = CassiniSoldner._datum if datum is None else \ _xellipsoidal(datum=_ellipsoidal_datum(datum, name=self.name)) if self._datum != d: self._datum = d self.geodesic = None if self._geodesic is None else self.isExact def _datumatch(self, latlon): '''Check for matching datum ellipsoids. @raise CSSError: Ellipsoid mismatch of B{C{latlon}} and this projection. ''' d = getattr(latlon, _datum_, None) if d: _xdatum(self.datum, d, Error=CSSError) @Property_RO def equatoradius(self): '''Get the ellipsoid's equatorial radius, semi-axis (C{meter}). ''' return self.geodesic.a @Property_RO def flattening(self): '''Get the ellipsoid's flattening (C{float}). ''' return self.geodesic.f def forward(self, lat, lon, name=NN): '''Convert an (ellipsoidal) geodetic location to Cassini-Soldner easting and northing. @arg lat: Latitude of the location (C{degrees90}). @arg lon: Longitude of the location (C{degrees180}). @kwarg name: Name inlieu of this projection's name (C{str}). @return: An L{EasNor2Tuple}C{(easting, northing)}. @see: Methods L{CassiniSoldner.forward4}, L{CassiniSoldner.reverse} and L{CassiniSoldner.reverse4}. @raise CSSError: Invalid B{C{lat}} or B{C{lon}}. ''' t = self.forward6(lat, lon, name=name) return EasNor2Tuple(t.easting, t.northing, name=t.name) def forward4(self, lat, lon, name=NN): '''Convert an (ellipsoidal) geodetic location to Cassini-Soldner easting and northing. @arg lat: Latitude of the location (C{degrees90}). @arg lon: Longitude of the location (C{degrees180}). @kwarg name: Name inlieu of this projection's name (C{str}). @return: An L{EasNorAziRk4Tuple}C{(easting, northing, azimuth, reciprocal)}. @see: Method L{CassiniSoldner.forward}, L{CassiniSoldner.forward6}, L{CassiniSoldner.reverse} and L{CassiniSoldner.reverse4}. @raise CSSError: Invalid B{C{lat}} or B{C{lon}}. ''' t = self.forward6(lat, lon, name=name) return EasNorAziRk4Tuple(t.easting, t.northing, t.azimuth, t.reciprocal, name=t.name) def forward6(self, lat, lon, name=NN): '''Convert an (ellipsoidal) geodetic location to Cassini-Soldner easting and northing. @arg lat: Latitude of the location (C{degrees90}). @arg lon: Longitude of the location (C{degrees180}). @kwarg name: Name inlieu of this projection's name (C{str}). @return: An L{EasNorAziRkEqu6Tuple}C{(easting, northing, azimuth, reciprocal, equatorarc, equatorazimuth)}. @see: Method L{CassiniSoldner.forward}, L{CassiniSoldner.forward4}, L{CassiniSoldner.reverse} and L{CassiniSoldner.reverse4}. @raise CSSError: Invalid B{C{lat}} or B{C{lon}}. ''' g = self.geodesic lat = Lat_(lat, Error=CSSError) d, _ = _diff182(self.lon0, Lon_(lon, Error=CSSError)) # _2sum D = abs(d) r = g.Inverse(lat, -D, lat, D) z1, a = r.azi1, (r.a12 * _0_5) z2, e = r.azi2, (r.s12 * _0_5) if e == 0: # PYCHOK no cover z = _diff182(z1, z2)[0] * _0_5 # _2sum c = _copysign(_90_0, 90 - D) # -90 if D > 90 else 90 z1, z2 = c - z, c + z if _signBit(d): a, e, z2 = neg(a), neg(e), z1 z = _norm180(z2) # azimuth of easting direction p = g.Line(lat, d, z, g.DISTANCE | g.GEODESICSCALE | g.LINE_OFF) # reciprocal of azimuthal northing scale rk = p.ArcPosition(neg(a), g.GEODESICSCALE).M21 # rk = p._GenPosition(True, -a, g.DISTANCE)[7] s, c = _sincos2d(p.azi0) # aka equatorazimuth sb1 = _copysign(c, lat) cb1 = _copysign(s, 90 - D) # -abs(s) if D > 90 else abs(s) d = _atan2d(sb1 * self._cb0 - cb1 * self._sb0, cb1 * self._cb0 + sb1 * self._sb0) n = self._meridian.ArcPosition(d, g.DISTANCE).s12 # n = self._meridian._GenPosition(True, d, g.DISTANCE)[4] return EasNorAziRkEqu6Tuple(e, n, z, rk, p.a1, p.azi0, name=name or self.name) @Property def geodesic(self): '''Get this projection's I{wrapped,Karney} U{Geodesic <https://GeographicLib.SourceForge.io/C++/doc/python/code.html>}, provided package U{geographiclib <https://PyPI.org/project/geographiclib>} is installed, otherwise L{GeodesicExact} instance. ''' g = self._geodesic if g is None: try: g = self.datum.ellipsoid.geodesic except ImportError: g = self.datum.ellipsoid.geodesicx self._geodesic = g return g @geodesic.setter # PYCHOK setter! def geodesic(self, exact): '''Set this projection's geodesic (C{bool}) to L{GeodesicExact} or I{wrapped Karney}'s or C{None} for the default. @raise ImportError: Package U{geographiclib<https://PyPI.org/ project/geographiclib>} not installed or not found and C{B{exact}=False}. ''' if exact is None: self._geodesic = None elif exact: self._geodesic = self.datum.ellipsoid.geodesicx else: self._geodesic = self.datum.ellipsoid.geodesic self.reset(*self.latlon0) @Property_RO def isExact(self): '''Return C{True} if this projection's geodesic is L{GeodesicExact}. ''' return isinstance(self.geodesic, _MODS.geodesicx.GeodesicExact) @Property_RO def lat0(self): '''Get the center latitude (C{degrees90}). ''' return self.latlon0.lat @property def latlon0(self): '''Get the center lat- and longitude (L{LatLon2Tuple}C{(lat, lon)}) in (C{degrees90}, (C{degrees180}). ''' return self._latlon0 @latlon0.setter # PYCHOK setter! def latlon0(self, latlon0): '''Set the center lat- and longitude (ellipsoidal C{LatLon}, L{LatLon2Tuple}, L{LatLon4Tuple} or a C{tuple} or C{list} with the C{lat}- and C{lon}gitude in C{degrees}). @raise CSSError: Invalid B{C{latlon0}} or ellipsoid mismatch of B{C{latlon0}} and this projection. ''' if istuplist(latlon0, 2): lat0, lon0 = latlon0[:2] else: try: lat0, lon0 = latlon0.lat, latlon0.lon self._datumatch(latlon0) except (AttributeError, TypeError, ValueError) as x: raise CSSError(latlon0=latlon0, txt=str(x)) self.reset(lat0, lon0) @Property_RO def lon0(self): '''Get the center longitude (C{degrees180}). ''' return self.latlon0.lon @deprecated_Property_RO def majoradius(self): # PYCHOK no cover '''DEPRECATED, use property C{equatoradius}.''' return self.equatoradius def reset(self, lat0, lon0): '''Set or reset the center point of this Cassini-Soldner projection. @arg lat0: Center point latitude (C{degrees90}). @arg lon0: Center point longitude (C{degrees180}). @raise CSSError: Invalid B{C{lat0}} or B{C{lon0}}. ''' _update_all(self) g = self.geodesic self._meridian = m = g.Line(Lat_(lat0=lat0, Error=CSSError), Lon_(lon0=lon0, Error=CSSError), _0_0, g.STANDARD | g.DISTANCE_IN | g.LINE_OFF) self._latlon0 = LatLon2Tuple(m.lat1, m.lon1) s, c = _sincos2d(m.lat1) # == self.lat0 == self.LatitudeOrigin() self._sb0, self._cb0 = _norm2(s * g.f1, c) def reverse(self, easting, northing, name=NN, LatLon=None, **LatLon_kwds): '''Convert a Cassini-Soldner location to (ellipsoidal) geodetic lat- and longitude. @arg easting: Easting of the location (C{meter}). @arg northing: Northing of the location (C{meter}). @kwarg name: Name inlieu of this projection's name (C{str}). @kwarg LatLon: Optional, ellipsoidal class to return the geodetic location as (C{LatLon}) or C{None}. @kwarg LatLon_kwds: Optional (C{LatLon}) keyword arguments, ignored if C{B{LatLon} is None}. @return: Geodetic location B{C{LatLon}} or if B{C{LatLon}} is C{None}, a L{LatLon2Tuple}C{(lat, lon)}. @raise CSSError: Ellipsoidal mismatch of B{C{LatLon}} and this projection. @raise TypeError: Invalid B{C{LatLon}} or B{C{LatLon_kwds}}. @see: Method L{CassiniSoldner.reverse4}, L{CassiniSoldner.forward}. L{CassiniSoldner.forward4} and L{CassiniSoldner.forward6}. ''' r = self.reverse4(easting, northing, name=name) if LatLon is None: r = LatLon2Tuple(r.lat, r.lon, name=r.name) # PYCHOK expected else: _xsubclassof(_LLEB, LatLon=LatLon) kwds = _xkwds(LatLon_kwds, datum=self.datum, name=r.name) r = LatLon(r.lat, r.lon, **kwds) # PYCHOK expected self._datumatch(r) return r def reverse4(self, easting, northing, name=NN): '''Convert a Cassini-Soldner location to (ellipsoidal) geodetic lat- and longitude. @arg easting: Easting of the location (C{meter}). @arg northing: Northing of the location (C{meter}). @kwarg name: Name inlieu of this projection's name (C{str}). @return: A L{LatLonAziRk4Tuple}C{(lat, lon, azimuth, reciprocal)}. @see: Method L{CassiniSoldner.reverse}, L{CassiniSoldner.forward} and L{CassiniSoldner.forward4}. ''' g = self.geodesic n = self._meridian.Position(northing) r = g.Direct(n.lat2, n.lon2, n.azi2 + _90_0, easting, g.STANDARD | g.GEODESICSCALE) z = _umod_360(r.azi2) # -180 <= r.azi2 < 180 ... 0 <= z < 360 # include z azimuth of easting direction and rk reciprocal # of azimuthal northing scale (see C++ member Direct() 5/6 # <https://GeographicLib.SourceForge.io/C++/doc/classGeographicLib_1_1Geodesic.html>) return LatLonAziRk4Tuple(r.lat2, r.lon2, z, r.M12, name=name or self.name) toLatLon = reverse # XXX not reverse4 def toRepr(self, prec=6, **unused): # PYCHOK expected '''Return a string representation of this projection. @kwarg prec: Number of (decimal) digits, unstripped (C{int}). @return: This projection as C{"<classname>(lat0, lon0, ...)"} (C{str}). ''' return _fstrLL0(self, prec, True) def toStr(self, prec=6, sep=_SPACE_, **unused): # PYCHOK expected '''Return a string representation of this projection. @kwarg prec: Number of (decimal) digits, unstripped (C{int}). @kwarg sep: Separator to join (C{str}). @return: This projection as C{"lat0 lon0"} (C{str}). ''' t = _fstrLL0(self, prec, False) return t if sep is None else sep.join(t) class Css(_NamedBase): '''Cassini-Soldner East-/Northing location. ''' _CS0 = None # default projection (L{CassiniSoldner}) _cs0 = None # projection (L{CassiniSoldner}) _easting = _0_0 # easting (C{float}) _height = 0 # height (C{meter}) _northing = _0_0 # northing (C{float}) def __init__(self, e, n, h=0, cs0=None, name=NN): '''New L{Css} Cassini-Soldner position. @arg e: Easting (C{meter}). @arg n: Northing (C{meter}). @kwarg h: Optional height (C{meter}). @kwarg cs0: Optional, the Cassini-Soldner projection (L{CassiniSoldner}). @kwarg name: Optional name (C{str}). @return: The Cassini-Soldner location (L{Css}). @raise CSSError: If B{C{e}} or B{C{n}} is invalid. @raise TypeError: If B{C{cs0}} is not L{CassiniSoldner}. @raise ValueError: Invalid B{C{h}}. @example: >>> cs = Css(448251, 5411932.0001) ''' self._cs0 = _CS0(cs0) self._easting = Easting(e, Error=CSSError) self._northing = Northing(n, Error=CSSError) if h: self._height = Height(h=h) if name: self.name = name @Property_RO def azi(self): '''Get the azimuth of easting direction (C{degrees}). ''' return self.reverse4.azimuth azimuth = azi @Property def cs0(self): '''Get the projection (L{CassiniSoldner}). ''' return self._cs0 or Css._CS0 @cs0.setter # PYCHOK setter! def cs0(self, cs0): '''Set the I{Cassini-Soldner} projection (L{CassiniSoldner}). @raise TypeError: Invalid B{C{cs0}}. ''' cs0 = _CS0(cs0) if cs0 != self._cs0: _update_all(self) self._cs0 = cs0 # def dup(self, name=NN, **e_n_h_cs0): # PYCHOK signature # '''Duplicate this position with some attributes modified. # # @kwarg e_n_h_cs0: Use keyword argument C{B{e}=...}, C{B{n}=...}, # C{B{h}=...} and/or C{B{cs0}=...} to override # the current C{easting}, C{northing} C{height} # or C{cs0} projectio, respectively. # ''' # def _args_kwds(e=None, n=None, **kwds): # return (e, n), kwds # # kwds = _xkwds(e_n_h_cs0, e=self.easting, n=self.northing, # h=self.height, cs0=self.cs0, # name=name or self.name) # args, kwds = _args_kwds(**kwds) # return self.__class__(*args, **kwds) # .classof @Property_RO def easting(self): '''Get the easting (C{meter}). ''' return self._easting @Property_RO def height(self): '''Get the height (C{meter}). ''' return self._height @Property_RO def latlon(self): '''Get the lat- and longitude (L{LatLon2Tuple}). ''' r = self.reverse4 return LatLon2Tuple(r.lat, r.lon, name=self.name) @Property_RO def northing(self): '''Get the northing (C{meter}). ''' return self._northing @Property_RO def reverse4(self): '''Get the lat, lon, azimuth and reciprocal (L{LatLonAziRk4Tuple}). ''' return self.cs0.reverse4(self.easting, self.northing, name=self.name) @Property_RO def rk(self): '''Get the reciprocal of azimuthal northing scale (C{scalar}). ''' return self.reverse4.reciprocal reciprocal = rk def toLatLon(self, LatLon=None, height=None, **LatLon_kwds): '''Convert this L{Css} to an (ellipsoidal) geodetic point. @kwarg LatLon: Optional, ellipsoidal class to return the geodetic point (C{LatLon}) or C{None}. @kwarg height: Optional height for the point, overriding the default height (C{meter}). @kwarg LatLon_kwds: Optional, additional B{C{LatLon}} keyword arguments, ignored if C{B{LatLon} is None}. @return: The geodetic point (B{C{LatLon}}) or if B{C{LatLon}} is C{None}, a L{LatLon4Tuple}C{(lat, lon, height, datum)}. @raise TypeError: If B{C{LatLon}} or B{C{datum}} is not ellipsoidal or invalid B{C{height}} or B{C{LatLon_kwds}}. ''' if LatLon: _xsubclassof(_LLEB, LatLon=LatLon) lat, lon = self.latlon h = self.height if height is None else Height(height) return _LL4Tuple(lat, lon, h, self.cs0.datum, LatLon, LatLon_kwds, inst=self, name=self.name) def toRepr(self, prec=6, fmt=Fmt.SQUARE, sep=_COMMASPACE_, m=_m_, C=False): # PYCHOK expected '''Return a string representation of this L{Css} position. @kwarg prec: Number of (decimal) digits, unstripped (C{int}). @kwarg fmt: Enclosing backets format (C{str}). @kwarg sep: Optional separator between name:values (C{str}). @kwarg m: Optional unit of the height, default meter (C{str}). @kwarg C: Optionally, include name of projection (C{bool}). @return: This position as C{"[E:meter, N:meter, H:m, name:'', C:Conic.Datum]"} (C{str}). ''' t, T = _fstrENH2(self, prec, m) if self.name: t += repr(self.name), T += _name_, if C: t += self.cs0.toRepr(prec=prec), T += _C_, return _xzipairs(T, t, sep=sep, fmt=fmt) def toStr(self, prec=6, sep=_SPACE_, m=_m_): # PYCHOK expected '''Return a string representation of this L{Css} position. @kwarg prec: Number of (decimal) digits, unstripped (C{int}). @kwarg sep: Optional separator to join (C{str}) or C{None} to return an unjoined C{tuple} of C{str}s. @kwarg m: Height units, default C{meter} (C{str}). @return: This position as C{"easting nothing"} C{str} in C{meter} plus C{" height"} and C{'m'} if height is non-zero (C{str}). ''' t, _ = _fstrENH2(self, prec, m) return t if sep is None else sep.join(t) class EasNorAziRk4Tuple(_NamedTuple): '''4-Tuple C{(easting, northing, azimuth, reciprocal)} for the Cassini-Soldner location with C{easting} and C{northing} in C{meters} and the C{azimuth} of easting direction and C{reciprocal} of azimuthal northing scale, both in C{degrees}. ''' _Names_ = (_easting_, _northing_, _azimuth_, _reciprocal_) _Units_ = ( Easting, Northing, Bearing, Scalar) class EasNorAziRkEqu6Tuple(_NamedTuple): '''6-Tuple C{(easting, northing, azimuth, reciprocal, equatorarc, equatorazimuth)} for the Cassini-Soldner location with C{easting} and C{northing} in C{meters} and the C{azimuth} of easting direction, C{reciprocal} of azimuthal northing scale, C{equatorarc} and C{equatorazimuth}, all in C{degrees}. ''' _Names_ = EasNorAziRk4Tuple._Names_ + ('equatorarc', 'equatorazimuth') _Units_ = EasNorAziRk4Tuple._Units_ + ( Degrees, Bearing) class LatLonAziRk4Tuple(_NamedTuple): '''4-Tuple C{(lat, lon, azimuth, reciprocal)}, all in C{degrees} where C{azimuth} is the azimuth of easting direction and C{reciprocal} the reciprocal of azimuthal northing scale. ''' _Names_ = (_lat_, _lon_, _azimuth_, _reciprocal_) _Units_ = ( Lat_, Lon_, Bearing, Scalar) def toCss(latlon, cs0=None, height=None, Css=Css, name=NN): '''Convert an (ellipsoidal) geodetic point to a Cassini-Soldner location. @arg latlon: Ellipsoidal point (C{LatLon} or L{LatLon4Tuple}). @kwarg cs0: Optional, the Cassini-Soldner projection to use (L{CassiniSoldner}). @kwarg height: Optional height for the point, overriding the default height (C{meter}). @kwarg Css: Optional class to return the location (L{Css}) or C{None}. @kwarg name: Optional B{C{Css}} name (C{str}). @return: The Cassini-Soldner location (B{C{Css}}) or an L{EasNor3Tuple}C{(easting, northing, height)} if B{C{Css}} is C{None}. @raise CSSError: Ellipsoidal mismatch of B{C{latlon}} and B{C{cs0}}. @raise ImportError: Package U{geographiclib<https://PyPI.org/ project/geographiclib>} not installed or not found. @raise TypeError: If B{C{latlon}} is not ellipsoidal. ''' _xinstanceof(_LLEB, LatLon4Tuple, latlon=latlon) cs = _CS0(cs0) cs._datumatch(latlon) c = cs.forward4(latlon.lat, latlon.lon) h = latlon.height if height is None else Height(height) n = name or nameof(latlon) if Css is None: r = EasNor3Tuple(c.easting, c.northing, h, name=n) else: r = Css(c.easting, c.northing, h=h, cs0=cs, name=n) r._latlon = LatLon2Tuple(latlon.lat, latlon.lon, name=n) r._azi, r._rk = c.azimuth, c.reciprocal return r # **) MIT License # # Copyright (C) 2016-2022 -- 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. 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