lsst.sphgeom._continue_class Namespace Reference

Classes
class	Box
class	Circle
class	ConvexPolygon
class	Region

Functions
bool	_isAttributeSafeToTransfer (str name, typing.Any value)
	_continueClass (cls)
float	_inf_to_limit (float value, float min, float max)
float	_inf_to_lat (float lat)
float	_inf_to_lon (float lat)

Variables
	_INTRINSIC_SPECIAL_ATTRIBUTES

Detailed Description

Extend any of the C++ Python classes by adding additional methods.

Function Documentation

_continueClass()

lsst.sphgeom._continue_class._continueClass ( cls )

protected

Definition at line 67 of file _continue_class.py.

def _continueClass(cls):
    orig = getattr(sys.modules[cls.__module__], cls.__name__)
    for name in dir(cls):
        # Common descriptors like classmethod and staticmethod can only be
        # accessed without invoking their magic if we use __dict__; if we use
        # getattr on those we'll get e.g. a bound method instance on the dummy
        # class rather than a classmethod instance we can put on the target
        # class.
        attr = cls.__dict__.get(name, None) or getattr(cls, name)
        if _isAttributeSafeToTransfer(name, attr):
            setattr(orig, name, attr)
    return orig
 
 

_inf_to_lat()

float lsst.sphgeom._continue_class._inf_to_lat ( float lat )

protected

Map latitude +Inf to +90 and -Inf to -90 degrees.

Definition at line 90 of file _continue_class.py.

def _inf_to_lat(lat: float) -> float:
    """Map latitude +Inf to +90 and -Inf to -90 degrees."""
    return _inf_to_limit(lat, -90.0, 90.0)
 
 

_inf_to_limit()

float lsst.sphgeom._continue_class._inf_to_limit ( float value, float min, float max )

protected

Map a value to a fixed range if infinite.

Definition at line 81 of file _continue_class.py.

def _inf_to_limit(value: float, min: float, max: float) -> float:
    """Map a value to a fixed range if infinite."""
    if not math.isinf(value):
        return value
    if value > 0.0:
        return max
    return min
 
 

_inf_to_lon()

float lsst.sphgeom._continue_class._inf_to_lon ( float lat )

protected

Map longitude +Inf to +360 and -Inf to 0 degrees.

Definition at line 95 of file _continue_class.py.

def _inf_to_lon(lat: float) -> float:
    """Map longitude +Inf to +360 and -Inf to 0 degrees."""
    return _inf_to_limit(lat, 0.0, 360.0)
 
 
@_continueClass

_isAttributeSafeToTransfer()

bool lsst.sphgeom._continue_class._isAttributeSafeToTransfer ( str name, typing.Any value )

protected

Definition at line 59 of file _continue_class.py.

def _isAttributeSafeToTransfer(name: str, value: typing.Any) -> bool:
    if name.startswith("__") and (
        value is getattr(object, name, None) or name in _INTRINSIC_SPECIAL_ATTRIBUTES
    ):
        return False
    return True
 
 

Variable Documentation

_INTRINSIC_SPECIAL_ATTRIBUTES

lsst.sphgeom._continue_class._INTRINSIC_SPECIAL_ATTRIBUTES

protected

Initial value:

=  frozenset(
    (
        "__qualname__",
        "__module__",
        "__metaclass__",
        "__dict__",
        "__weakref__",
        "__class__",
        "__subclasshook__",
        "__name__",
        "__doc__",
    )
)

Definition at line 44 of file _continue_class.py.