quaternion_norm

compas.geometry.quaternion_norm(q)

Calculates the length (euclidean norm) of a quaternion.

Parameters:

q[float, float, float, float] | compas.geometry.Quaternion

Quaternion or sequence of four floats [w, x, y, z].

Returns:

float

The length (euclidean norm) of a quaternion.

See also

quaternion_is_unit

quaternion_unitize

quaternion_multiply

quaternion_canonize

quaternion_conjugate

References

• Quaternion Norm: http://mathworld.wolfram.com/QuaternionNorm.html