# -*- coding: utf-8 -*-
u'''(INTERNAL) Base class C{UtmUpsBase} and private functions
for the UTM, UPS, Mgrs and Epsg classes/modules.
'''
from pygeodesy.basics import isint, isscalar, isstr, map1, neg_, property_RO, \
_xattrs, _xinstanceof, _xsubclassof, _xzipairs
from pygeodesy.datums import Datums, _ellipsoidal_datum
from pygeodesy.dms import degDMS, parseDMS2
from pygeodesy.ellipsoidalBase import LatLonEllipsoidalBase as _LLEB
from pygeodesy.errors import ParseError, _parseX, _ValueError, _xkwds
from pygeodesy.interns import NN, _COMMA_, _float, _invalid_, _N_, _n_a_, \
_NS_, _PLUS_, _SPACE_, _0_0, _0_5, _180_0
from pygeodesy.lazily import _ALL_DOCS
from pygeodesy.named import _NamedBase, nameof, \
notOverloaded, _xnamed
from pygeodesy.namedTuples import EasNor2Tuple, LatLonDatum5Tuple
from pygeodesy.streprs import fstr, _fstrENH2
from pygeodesy.units import Band, Easting, Northing, Scalar, Zone
from pygeodesy.utily import wrap90, wrap360
__all__ = ()
__version__ = '20.10.29'
_MGRS_TILE = 100e3 # PYCHOK block size (C{meter})
_UTM_LAT_MAX = _float( 84) # PYCHOK for export (C{degrees})
_UTM_LAT_MIN = _float(-80) # PYCHOK for export (C{degrees})
_UPS_LAT_MAX = _UTM_LAT_MAX - _0_5 # PYCHOK includes 30' UTM overlap
_UPS_LAT_MIN = _UTM_LAT_MIN + _0_5 # PYCHOK includes 30' UTM overlap
_UTM_ZONE_MAX = 60 # PYCHOK for export
_UTM_ZONE_MIN = 1 # PYCHOK for export
_UTM_ZONE_OFF_MAX = 60 # PYCHOK max Central meridian offset (C{degrees})
_UPS_ZONE = _UTM_ZONE_MIN - 1 # PYCHOK for export
_UPS_ZONE_STR = '%02d' % (_UPS_ZONE,) # PYCHOK for export
_UTMUPS_ZONE_INVALID = -4 # PYCHOK for export too
_UTMUPS_ZONE_MAX = _UTM_ZONE_MAX # PYCHOK for export too, by .units.py
_UTMUPS_ZONE_MIN = _UPS_ZONE # PYCHOK for export too, by .units.py
# _MAX_PSEUDO_ZONE = -1
# _MIN_PSEUDO_ZONE = -4
# _UTMUPS_ZONE_MATCH = -3
# _UTMUPS_ZONE_STANDARD = -1
# _UTM = -2
def _hemi(lat): # imported by .ups, .utm
'''Return the hemisphere letter.
@arg lat: Latitude (C{degrees} or C{radians}).
@return: C{'N'|'S'} for north-/southern hemisphere.
'''
return _NS_[int(lat < 0)]
def _to4lldn(latlon, lon, datum, name):
'''(INTERNAL) Return 4-tuple (C{lat, lon, datum, name}).
'''
try:
# if lon is not None:
# raise AttributeError
lat, lon = map1(float, latlon.lat, latlon.lon)
_xinstanceof(_LLEB, LatLonDatum5Tuple, latlon=latlon)
d = datum or latlon.datum
except AttributeError:
lat, lon = parseDMS2(latlon, lon)
d = datum or Datums.WGS84
return lat, lon, d, (name or nameof(latlon))
def _to3zBhp(zone, band, hemipole=NN, Error=_ValueError): # imported by .epsg, .ups, .utm, .utmups
'''Parse UTM/UPS zone, Band letter and hemisphere/pole letter.
@arg zone: Zone with/-out Band (C{scalar} or C{str}).
@kwarg band: Optional (longitudinal/polar) Band letter (C{str}).
@kwarg hemipole: Optional hemisphere/pole letter (C{str}).
@kwarg Error: Optional error to raise, overriding the default
C{ValueError}.
@return: 3-Tuple (C{zone, Band, hemisphere/pole}) as (C{int,
str, 'N'|'S'}) where C{zone} is C{0} for UPS or
C{1..60} for UTM and C{Band} is C{'A'..'Z'} I{NOT}
checked for valid UTM/UPS bands.
@raise ValueError: Invalid B{C{zone}}, B{C{band}} or B{C{hemipole}}.
'''
try:
B, z = band, _UTMUPS_ZONE_INVALID
if isscalar(zone):
z = int(zone)
elif zone and isstr(zone):
if zone.isdigit():
z = int(zone)
elif len(zone) > 1:
B = zone[-1:]
z = int(zone[:-1])
elif zone in 'AaBbYyZz': # single letter
B = zone
z = _UPS_ZONE
if _UTMUPS_ZONE_MIN <= z <= _UTMUPS_ZONE_MAX:
hp = hemipole[:1].upper()
if hp in _NS_ or not hp:
z = Zone(z)
B = Band(B.upper())
if B.isalpha():
return z, B, (hp or _NS_[B < _N_])
elif not B:
return z, B, hp
t = _invalid_
except (AttributeError, IndexError, TypeError, ValueError) as x:
t = str(x) # no Python 3+ exception chaining
raise Error(zone=zone, band=B, hemipole=hemipole, txt=t)
def _to3zll(lat, lon): # imported by .ups, .utm
'''Wrap lat- and longitude and determine UTM zone.
@arg lat: Latitude (C{degrees}).
@arg lon: Longitude (C{degrees}).
@return: 3-Tuple (C{zone, lat, lon}) as (C{int}, C{degrees90},
C{degrees180}) where C{zone} is C{1..60} for UTM.
'''
x = wrap360(lon + _180_0) # use wrap360 to get ...
z = int(x) // 6 + 1 # ... longitudinal UTM zone [1, 60] and ...
lon = x - _180_0 # ... lon [-180, 180) i.e. -180 <= lon < 180
return Zone(z), wrap90(lat), lon
class UtmUpsBase(_NamedBase):
'''(INTERNAL) Base class for L{Utm} and L{Ups} coordinates.
'''
_band = NN # latitude band letter ('A..Z')
_convergence = None # meridian conversion (C{degrees})
_datum = Datums.WGS84 # L{Datum}
_easting = _0_0 # Easting, see B{C{falsed}} (C{meter})
_Error = None # I{Must be overloaded}
_epsg = None # toEpsg cache (L{Epsg})
_falsed = True # falsed easting and northing (C{bool})
_hemisphere = NN # hemisphere ('N' or 'S'), different from pole
_latlon = None # toLatLon cache (C{LatLon})
_latlon_args = None # toLatLon args (varies)
_mgrs = None # toMgrs cache (L{Mgrs}
_northing = _0_0 # Northing, see B{C{falsed}} (C{meter})
_scale = None # grid scale factor (C{scalar}) or C{None}
# _scale0 = _K0 # central scale factor (C{scalar})
_ups = None # toUps cache (L{Ups})
_utm = None # toUtm cache (L{Utm})
def __init__(self, easting, northing, band=NN, datum=None, falsed=True,
convergence=None, scale=None):
'''(INTERNAL) New L{UtmUpsBase}.
'''
E = self._Error
if not E:
notOverloaded(self, '_Error')
self._easting = Easting(easting, Error=E)
self._northing = Northing(northing, Error=E)
if band:
_xinstanceof(str, band=band)
self._band = band
if datum not in (None, self._datum):
self._datum = _ellipsoidal_datum(datum) # XXX name=band
if not falsed:
self._falsed = False
if convergence is not self._convergence:
self._convergence = Scalar(convergence=convergence, Error=E)
if scale is not self._scale:
self._scale = Scalar(scale=scale, Error=E)
def __repr__(self):
return self.toRepr(B=True)
def __str__(self):
return self.toStr()
@property_RO
def convergence(self):
'''Get the meridian convergence (C{degrees}) or C{None}.
'''
return self._convergence
@property_RO
def datum(self):
'''Get the datum (L{Datum}).
'''
return self._datum
@property_RO
def easting(self):
'''Get the easting (C{meter}).
'''
return self._easting
@property_RO
def eastingnorthing(self):
'''Get easting and northing (L{EasNor2Tuple}C{(easting, northing)}) in C{meter}s.
'''
return EasNor2Tuple(self.easting, self.northing)
def eastingnorthing2(self, falsed=True):
'''Return easting and northing, falsed or unfalsed.
@kwarg falsed: Return easting and northing falsed
(C{bool}), otherwise unfalsed.
@return: An L{EasNor2Tuple}C{(easting, northing)} in C{meter}s.
'''
e, n = self.falsed2
if self.falsed and not falsed:
e, n = neg_(e, n)
elif falsed and not self.falsed:
pass
else:
e = n = _0_0
return EasNor2Tuple(Easting( e + self.easting, Error=self._Error),
Northing(n + self.northing, Error=self._Error))
@property_RO
def falsed(self):
'''Get easting and northing falsed (C{bool}).
'''
return self._falsed
@property_RO
def falsed2(self): # PYCHOK no cover
'''(INTERNAL) I{Must be overloaded}.
'''
notOverloaded(self, self.falsed2)
@property_RO
def hemisphere(self):
'''Get the hemisphere (C{str}, 'N'|'S').
'''
return self._hemisphere
def _latlon5(self, LatLon, **LatLon_kwds):
'''(INTERNAL) Convert cached LatLon
'''
ll = self._latlon
if LatLon is None:
r = LatLonDatum5Tuple(ll.lat, ll.lon, ll.datum,
ll.convergence, ll.scale)
else:
_xsubclassof(_LLEB, LatLon=LatLon)
kwds = _xkwds(LatLon_kwds, datum=ll.datum)
r = _xattrs(LatLon(ll.lat, ll.lon, **kwds),
ll, '_convergence', '_scale')
return _xnamed(r, ll.name)
@property_RO
def northing(self):
'''Get the northing (C{meter}).
'''
return self._northing
@property_RO
def scale(self):
'''Get the grid scale (C{float}) or C{None}.
'''
return self._scale
@property_RO
def scale0(self):
'''Get the central scale factor (C{float}).
'''
return self._scale0
def to2en(self, falsed=True): # PYCHOK no cover
'''DEPRECATED, use method C{eastingnorthing2}.
@return: An L{EasNor2Tuple}C{(easting, northing)}.
'''
return self.eastingnorthing2(falsed=falsed)
def toEpsg(self):
'''Determine the B{EPSG (European Petroleum Survey Group)} code.
@return: C{EPSG} code (C{int}).
@raise EPSGError: See L{Epsg}.
'''
if self._epsg is None:
from pygeodesy.epsg import Epsg # PYCHOK circular import
self._epsg = Epsg(self)
return self._epsg
def _toRepr(self, fmt, B, cs, prec, sep): # PYCHOK expected
'''(INTERNAL) Return a representation for this ETM/UTM/UPS coordinate.
'''
t = self.toStr(prec=prec, sep=None, B=B, cs=cs) # hemipole
T = 'ZHENCS'[:len(t)]
return _xzipairs(T, t, sep=sep, fmt=fmt)
def _toStr(self, hemipole, B, cs, prec, sep):
'''(INTERNAL) Return a string for this ETM/UTM/UPS coordinate.
'''
z = '%02d%s' % (self.zone, (self.band if B else NN)) # PYCHOK band
t = (z, hemipole) + _fstrENH2(self, prec, None)[0]
if cs:
prec = cs if isint(cs) else 8 # for backward compatibility
t += (_n_a_ if self.convergence is None else
degDMS(self.convergence, prec=prec, pos=_PLUS_),
_n_a_ if self.scale is None else
fstr(self.scale, prec=prec))
return t if sep is None else sep.join(t)
def _parseUTMUPS5(strUTMUPS, UPS, Error=ParseError, band=NN, sep=_COMMA_):
'''(INTERNAL) Parse a string representing a UTM or UPS coordinate
consisting of C{"zone[band] hemisphere/pole easting northing"}.
@arg strUTMUPS: A UTM or UPS coordinate (C{str}).
@kwarg band: Optional, default Band letter (C{str}).
@kwarg sep: Optional, separator to split (",").
@return: 5-Tuple (C{zone, hemisphere/pole, easting, northing,
band}).
@raise ParseError: Invalid B{C{strUTMUPS}}.
'''
def _UTMUPS5_(strUTMUPS, UPS, band, sep):
u = strUTMUPS.lstrip()
if UPS and not u.startswith(_UPS_ZONE_STR):
raise ValueError
u = u.replace(sep, _SPACE_).strip().split()
if len(u) < 4:
raise ValueError
z, h = u[:2]
if h[:1].upper() not in _NS_:
raise ValueError
if z.isdigit():
z, B = int(z), band
else:
for i in range(len(z)):
if not z[i].isdigit():
# int('') raises ValueError
z, B = int(z[:i]), z[i:]
break
else:
raise ValueError
e, n = map(float, u[2:4])
return z, h.upper(), e, n, B.upper()
return _parseX(_UTMUPS5_, strUTMUPS, UPS, band, sep,
strUTMUPS=strUTMUPS, Error=Error)
__all__ += _ALL_DOCS(UtmUpsBase)
# **) 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.
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