def _all(globalocals):
from pygeodesy.interns import NN as _NN, _attribute_, _COMMASPACE_, \
_DOT_, _module_, _s_ # PYCHOK expected
from pygeodesy.streprs import Fmt as _Fmt # PYCHOK expected
# collect all public module and attribute names and check
# that modules are imported from this package, 'pygeodesy'
# (but the latter only when not bundled with PyInstaller or
# Py2Exe, since the file-layout is different. Courtesy of
# GilderGeek<https://GitHub.com/mrJean1/PyGeodesy/issues/31>)
ns = list(lazily._ALL_INIT)
# XXX ps = () if _isfrozen else set([_pygeodesy_] + __name__.split(_DOT_))
for mod, attrs in lazily._ALL_LAZY.enums():
if mod not in globalocals:
t = _DOT_(_pygeodesy_, mod)
raise ImportError('missing %s%s: %s' % (_module_, _NN, t))
ns.append(mod)
# check that all other public attributes do exist
if attrs and isinstance(attrs, tuple):
t = tuple(a for a in attrs if a not in globalocals)
if t:
s = _Fmt.SQUARE(_s_, len(t)) if len(t) > 1 else _NN
t = _COMMASPACE_.join(
_DOT_(_pygeodesy_, mod, a) for a in t)
raise ImportError('missing %s%s: %s' % (_attribute_, s, t))
ns.extend(attrs)
# XXX if ps: # check that mod is a _pygeodesy_ module
# XXX m = globalocals[mod] # assert(m.__name__ == mod)
# XXX f = getattr(m, '__file__', _NN)
# XXX d = dirname(abspath(f)) if f else pygeodesy_abspath
# XXX p = getattr(m, '__package__', _NN) or _pygeodesy_
# XXX if p not in ps or d != pygeodesy_abspath:
# XXX raise ImportError('foreign module: %s from %r' % (_DOT_(p, mod), f or p))
return tuple(set(ns)) # remove duplicates
def discrete(self, points, fraction=None):
'''Compute the C{forward, discrete Fréchet} distance.
@arg points: Second set of points (C{LatLon}[], L{Numpy2LatLon}[],
L{Tuple2LatLon}[] or C{other}[]).
@kwarg fraction: Index fraction (C{float} in L{EPS}..L{EPS1}) to
interpolate intermediate B{C{points}} or use
C{None}, C{0} or C{1} for no intermediate
B{C{points}} and no I{fractional} indices.
@return: A L{Frechet6Tuple}C{(fd, fi1, fi2, r, n, units)}.
@raise FrechetError: Insufficient number of B{C{points}} or an
invalid B{C{point}} or B{C{fraction}}.
@raise RecursionError: Recursion depth exceeded, see U{sys.getrecursionlimit()
<https://docs.Python.org/3/library/sys.html#sys.getrecursionlimit>}.
'''
n2, ps2 = self._points2(points)
f2 = _fraction(fraction, n2)
p2 = self.points_fraction if f2 < EPS1 else self.points_ # PYCHOK expected
f1 = self.fraction
p1 = self.points_fraction if f1 < EPS1 else self.points_ # PYCHOK expected
def dF(fi1, fi2):
return self.distance(p1(self._ps1, fi1), p2(ps2, fi2))
try:
return _frechet_(self._n1, f1, n2, f2, dF, self.units)
except TypeError as x:
t = _DOT_(self.classname, self.discrete.__name__)
raise FrechetError(t, txt=str(x))
def _notError(inst, name, args, kwds): # PYCHOK no cover
'''(INTERNAL) Format an error message.
'''
n = _DOT_(classname(inst, prefixed=True), _dunder_name(name, name))
m = _COMMASPACE_.join(
modulename(c, prefixed=True) for c in inst.__class__.__mro__[1:-1])
return _COMMASPACE_(unstr(n, *args, **kwds), Fmt.PAREN(_MRO_, m))
def _immutable(inst, value):
'''Throws an C{AttributeError}, always.
'''
from pygeodesy.named import classname
s = _DOT_(repr(inst), self.name)
s = _EQUALSPACED_(s, repr(value))
t = _SPACE_(_immutable_, classname(self))
raise _AttributeError(s, txt=t)
def __getattr__(self, name):
'''Get the value of an attribute or item by B{C{name}}.
'''
try:
return tuple.__getitem__(self, self._Names_.index(name))
except IndexError:
raise _IndexError(_DOT_(self.classname, Fmt.ANGLE(_name_)), name)
except ValueError:
return tuple.__getattribute__(self, name)
def _callname(name, class_name, self_name, up=1): # imported by .points
'''(INTERNAL) Assemble the name for an invokation.
'''
n, c = class_name, callername(up=up + 1)
if c:
n = _DOT_(n, Fmt.PAREN(c, name))
if self_name:
n = _SPACE_(n, repr(self_name))
return n
def __setattr__(self, name, value):
'''Set attribute or item B{C{name}} to B{C{value}}.
'''
if name in self._Names_:
raise _TypeError(_DOT_(self.classname, name),
value,
txt=_immutable_)
elif name in (_name_, _name):
_Named.__setattr__(self, name,
value) # XXX _Named.name.fset(self, value)
else:
tuple.__setattr__(self, name, value)
def __delattr__(self, name):
'''Delete an attribute by B{C{name}}.
@note: Items can not be deleted.
'''
if name in self._Names_:
raise _TypeError(_del_,
_DOT_(self.classname, name),
txt=_immutable_)
elif name in (_name_, _name):
_Named.__setattr__(self, name,
NN) # XXX _Named.name.fset(self, NN)
else:
tuple.__delattr__(self, name)
def _validate(self, _OK=False): # see .EcefMatrix
'''(INTERNAL) One-time check of C{_Names_} and C{_Units_}
for each C{_NamedUnit} I{sub-class separately}.
'''
ns = self._Names_
if not (isinstance(ns, tuple) and len(ns) > 1): # XXX > 0
raise _TypeError(_DOT_(self.classname, _Names_), ns)
for i, n in enumerate(ns):
if not _xvalid(n, _OK=_OK):
t = Fmt.SQUARE(_Names_, i)
raise _ValueError(_DOT_(self.classname, t), n)
us = self._Units_
if not isinstance(us, tuple):
raise _TypeError(_DOT_(self.classname, _Units_), us)
if len(us) != len(ns):
raise LenError(self.__class__, _Units_=len(us), _Names_=len(ns))
for i, u in enumerate(us):
if not (u is None or callable(u)):
t = Fmt.SQUARE(_Units_, i)
raise _TypeError(_DOT_(self.classname, t), u)
self.__class__._validated = True
def clipCS4(points, lowerleft, upperright, closed=False, inull=False):
'''Clip a path against a rectangular clip box using the U{Cohen-Sutherland
<https://WikiPedia.org/wiki/Cohen-Sutherland_algorithm>} algorithm.
@arg points: The points (C{LatLon}[]).
@arg lowerleft: Bottom-left corner of the clip box (C{LatLon}).
@arg upperright: Top-right corner of the clip box (C{LatLon}).
@kwarg closed: Optionally, close the path (C{bool}).
@kwarg inull: Optionally, retain null edges if inside (C{bool}).
@return: Yield a L{ClipCS4Tuple}C{(start, end, i, j)} for each
edge of the I{clipped} path.
@raise ClipError: The B{C{lowerleft}} and B{C{upperright}} corners
specify an invalid clip box.
@raise PointsError: Insufficient number of B{C{points}}.
'''
cs = _CS(lowerleft, upperright, name=clipCS4.__name__)
n, pts = _pts2(points, closed, inull)
i, m = _imdex2(closed, n)
cmbp = cs.code4(pts[i])
for j in range(m, n):
c1, m1, b1, p1 = cmbp
c2, m2, b2, p2 = cmbp = cs.code4(pts[j])
if c1 & c2: # edge outside
pass
elif cs.edge(p1, p2):
for _ in range(5):
if c1: # clip p1
c1, m1, b1, p1 = m1(b1, p1)
elif c2: # clip p2
c2, m2, b2, p2 = m2(b2, p2)
else: # inside
if inull or _neq(p1, p2):
yield ClipCS4Tuple(p1, p2, i, j)
break
if c1 & c2: # edge outside
break
else: # PYCHOK no cover
raise _AssertionError(_DOT_(cs.name, 'for_else'))
elif inull and not c1: # null edge
yield ClipCS4Tuple(p1, p1, i, j)
elif inull and not c2:
yield ClipCS4Tuple(p2, p2, i, j)
i = j
def _all_imports(**more):
'''(INTERNAL) Build C{dict} of all lazy imports.
'''
# imports naming conventions stored below - [<key>] = <from>:
# import <module> - [<module>] = <module>
# from <module> import <attr> - [<attr>] = <module>
# from pygeodesy import <attr> - [<attr>] = <attr>
# from <module> import <attr> as <name> - [<name>] = <module>.<attr>
imports = _Dict()
imports_add = imports.add
for ALL in (_ALL_LAZY, _ALL_OVERRIDDEN, more):
for mod, attrs in ALL.items():
if isinstance(attrs, tuple) and not mod.startswith(_UNDER_):
imports_add(mod, mod)
for attr in attrs:
attr, _, as_attr = attr.partition(' as ')
if as_attr:
imports_add(as_attr, _DOT_(mod, attr), _deprecated_)
else:
imports_add(attr, mod)
return imports
def convertRefFrame(self, reframe2):
'''Convert this point to an other reference frame.
@arg reframe2: Reference frame to convert I{to} (L{RefFrame}).
@return: The converted point (ellipsoidal C{LatLon}) or
this point if conversion is C{nil}.
@raise TRFError: No B{C{.reframe}} or no conversion
available from B{C{.reframe}} to
B{C{reframe2}}.
@raise TypeError: The B{C{reframe2}} is not a L{RefFrame}.
@example:
>>> p = LatLon(51.4778, -0.0016, reframe=RefFrames.ETRF2000) # default Datums.WGS84
>>> p.convertRefFrame(RefFrames.ITRF2014) # 51.477803°N, 000.001597°W, +0.01m
'''
from pygeodesy.trf import RefFrame, _reframeTransforms
_xinstanceof(RefFrame, reframe2=reframe2)
if not self.reframe:
t = _SPACE_(_DOT_(repr(self), 'reframe'), MISSING)
raise TRFError(_no_(_conversion_), txt=t)
ts = _reframeTransforms(reframe2, self.reframe, self.epoch)
if ts:
c = self.toCartesian()
for t in ts:
c = c._applyHelmert(t, False)
ll = c.toLatLon(datum=self.datum,
LatLon=self.classof,
epoch=self.epoch,
reframe=reframe2)
# ll.reframe, ll.epoch = reframe2, self.epoch
else:
ll = self
return ll
def register(self, item):
'''Registed a new item.
@arg item: The item (any C{type}).
@return: The item name (C{str}).
@raise NameError: An B{C{item}} already registered with
that name or the B{C{item}} has no, an
empty or an invalid name.
@raise TypeError: The B{C{item}} type invalid.
'''
try:
n = item.name
if not (n and isstr(n) and isidentifier(n)):
raise ValueError
except (AttributeError, ValueError, TypeError) as x:
raise _NameError(_DOT_(_item_, _name_), item, txt=str(x))
if n in self:
raise _NameError(self._DOT_(n), item, txt=_exists_)
if not (self._item_Classes and isinstance(item, self._item_Classes)):
raise _TypesError(self._DOT_(n), item, *self._item_Classes)
self[n] = item
def __getattr__(name): # __getattr__ only for Python 3.7+
# only called once for each undefined pygeodesy attribute
if name in imports:
# importlib.import_module() implicitly sets sub-modules
# on this module as appropriate for direct imports (see
# note in the _lazy_import.__doc__ above).
mod, _, attr = imports[name].partition(_DOT_)
if mod not in imports:
raise LazyImportError(_no_(_module_), txt=_DOT_(parent, mod))
imported = import_module(_DOT_(_pygeodesy_, mod), parent)
pkg = getattr(imported, _p_a_c_k_a_g_e_, None)
if pkg not in packages: # invalid package
raise LazyImportError(_DOT_(mod, _p_a_c_k_a_g_e_), repr(pkg))
# import the module or module attribute
if attr:
imported = getattr(imported, attr, MISSING)
elif name != mod:
imported = getattr(imported, name, MISSING)
if imported is MISSING:
raise LazyImportError(_no_(_attribute_),
txt=_DOT_(mod, attr or name))
elif name in (_a_l_l_,): # XXX '_d_i_r_', '_m_e_m_b_e_r_s_'?
imported = _ALL_INIT + tuple(imports.keys())
mod = NN
else:
raise LazyImportError(_no_(_module_, _or_, _attribute_),
txt=_DOT_(parent, name))
setattr(package, name, imported)
if isLazy > 1:
z = NN
if mod and mod != name:
z = ' from .%s' % (mod,)
if isLazy > 2:
try: # see C{_caller3}
_, f, s = _caller3(2)
z = '%s by %s line %d' % (z, f, s)
except ValueError: # PYCHOK no cover
pass
print('# lazily imported %s%s' % (_DOT_(parent, name), z))
return imported # __getattr__
def _error(arg):
n = _DOT_(Fstr.__name__, self.name or self)
return _SPACE_(n, _PERCENT_, repr(arg))
def _DOT_(self, attr):
return _DOT_(self._name, attr) # PYCHOK _name
def _lazy_import2(_pygeodesy_): # MCCABE 15
'''Check for and set up C{lazy import}.
@arg _pygeodesy_: The name of the package (C{str}) performing
the imports, to help facilitate resolving
relative imports, usually C{__package__}.
@return: 2-Tuple C{(package, getattr)} of the importing package
for easy reference within itself and the callable to
be set to `__getattr__`.
@raise LazyImportError: Lazy import not supported or not enabled,
an import failed or the package name or
module name or attribute name is invalid
or does not exist.
@note: This is the original function U{modutil.lazy_import
<https://GitHub.com/brettcannon/modutil/blob/master/modutil.py>}
modified to handle the C{__all__} and C{__dir__} attributes
and call C{importlib.import_module(<module>.<name>, ...)}
without causing a C{ModuleNotFoundError}.
@see: The original U{modutil<https://PyPi.org/project/modutil>} and
U{PEP 562<https://www.Python.org/dev/peps/pep-0562>}.
'''
if _sys.version_info[:2] < (3, 7): # not supported before 3.7
t = _no_(_DOT_(_pygeodesy_, _lazy_import2.__name__))
raise LazyImportError(t, txt=_Python_(_sys))
import_module, package, parent = _lazy_init3(_pygeodesy_)
packages = (parent, '__main__', NN, _DOT_(parent, _deprecated_))
imports = _all_imports()
def __getattr__(name): # __getattr__ only for Python 3.7+
# only called once for each undefined pygeodesy attribute
if name in imports:
# importlib.import_module() implicitly sets sub-modules
# on this module as appropriate for direct imports (see
# note in the _lazy_import.__doc__ above).
mod, _, attr = imports[name].partition(_DOT_)
if mod not in imports:
raise LazyImportError(_no_(_module_), txt=_DOT_(parent, mod))
imported = import_module(_DOT_(_pygeodesy_, mod), parent)
pkg = getattr(imported, _p_a_c_k_a_g_e_, None)
if pkg not in packages: # invalid package
raise LazyImportError(_DOT_(mod, _p_a_c_k_a_g_e_), repr(pkg))
# import the module or module attribute
if attr:
imported = getattr(imported, attr, MISSING)
elif name != mod:
imported = getattr(imported, name, MISSING)
if imported is MISSING:
raise LazyImportError(_no_(_attribute_),
txt=_DOT_(mod, attr or name))
elif name in (_a_l_l_,): # XXX '_d_i_r_', '_m_e_m_b_e_r_s_'?
imported = _ALL_INIT + tuple(imports.keys())
mod = NN
else:
raise LazyImportError(_no_(_module_, _or_, _attribute_),
txt=_DOT_(parent, name))
setattr(package, name, imported)
if isLazy > 1:
z = NN
if mod and mod != name:
z = ' from .%s' % (mod,)
if isLazy > 2:
try: # see C{_caller3}
_, f, s = _caller3(2)
z = '%s by %s line %d' % (z, f, s)
except ValueError: # PYCHOK no cover
pass
print('# lazily imported %s%s' % (_DOT_(parent, name), z))
return imported # __getattr__
return package, __getattr__ # _lazy_import2
def _all_missing2(_all_):
'''(INTERNAL) Get diffs between pygeodesy.__all__ and lazily._all_imports.
'''
_alzy = _all_imports(**_NamedEnum_RO((a, ()) for a in _ALL_INIT))
return ((_DOT_('lazily', _all_imports.__name__), _COMMASPACE_.join(a for a in _all_ if a not in _alzy)),
(_DOT_('pygeodesy', _a_l_l_), _COMMASPACE_.join(a for a in _alzy if a not in _all_)))
def _DOT_(self, *names):
'''(INTERNAL) Period-join C{self.name} and C{names}.
'''
return _DOT_(self.name, *names)
def named4(self):
'''Get the C{package.module.class} name I{and/or} the name or C{""} (C{str}).
'''
return _xjoined_(_DOT_(self.__module__, self.__class__.__name__),
self.name)
