"""
==========================
Shapes (:mod:`sisl.shape`)
==========================
.. module:: sisl.shape
:noindex:
A variety of default shapes.
All shapes inherit the `Shape` class.
All shapes in sisl allows one to perform arithmetic on them.
I.e. one may *add* two shapes to accomblish what would be equivalent
to an ``&`` operation. The resulting shape will be a ``CompositeShape`` which
implements the necessary routines to ensure correct operation.
Currently these mathematical/boolean operators are implemented:
`A & B`
intersection of shapes
`A | B` or `A + B`
union of shapes
`A ^ B`
the disjunction union
`A - B`
complementary shape
.. autosummary::
:toctree:
Shape - base class
Cuboid - 3d cube
Cube - 3d box
Ellipsoid
Sphere
NullShape
"""
from .base import *
from .ellipsoid import *
from .prism4 import *
__all__ = [s for s in dir() if not s.startswith('_')]