quaternion_is_unit

compas.geometry.quaternion_is_unit(q, tol=1e-06)

Checks if a quaternion is unit-length.

Parameters

• q ([float, float, float, float] | compas.geometry.Quaternion) – Quaternion or sequence of four floats [w, x, y, z].

• tol (float, optional) – Requested decimal precision.

Returns

bool – True if the quaternion is unit-length, and False if otherwise.