skrobot.coordinates.math.angle_between_vectors

skrobot.coordinates.math.angle_between_vectors(v1, v2, normalize=True, directed=True)

Returns the smallest angle in radians between two vectors.

Parameters:

• v1 (numpy.ndarray, list[float] or tuple(float)) – input vector.

• v2 (numpy.ndarray, list[float] or tuple(float)) – input vector.

• normalize (bool) – If normalize is True, normalize v1 and v2.

• directed (bool) – If directed is False, the input vectors are interpreted as undirected axes.

Returns:

theta – smallest angle between v1 and v2.

Return type:

float