Class Block

python/geom.py:1240–1269

A parallelepiped (i.e., a brick, possibly with non-orthogonal axes).

class Block(GeometricObject):
    """
    A parallelepiped (i.e., a brick, possibly with non-orthogonal axes).
    """

    def __init__(
        self,
        size,
        e1=Vector3(1, 0, 0),
        e2=Vector3(0, 1, 0),
        e3=Vector3(0, 0, 1),
        **kwargs,
    ):
        """
        Construct a `Block`.

        + **`size` [`Vector3`]** — The lengths of the block edges along each of its three
          axes. Not really a 3-vector, but it has three components, each of which should
          be nonzero. No default value.

        + **`e1`, `e2`, `e3` [`Vector3`]** — The directions of the axes of the block; the
          lengths of these vectors are ignored. Must be linearly independent. They default
          to the three lattice directions.
        """

        self.size = Vector3(*size)
        self.e1 = Vector3(*e1)
        self.e2 = Vector3(*e2)
        self.e3 = Vector3(*e3)
        super().__init__(**kwargs)


class Ellipsoid(Block):