Welcome to Python-flavored Magnum! Please note that, while already being rather stable, this functionality is still considered experimental and some APIs might get changed without preserving full backwards compatibility.

magnum.Quaterniond class

Double quaternion

Static methods

def from_matrix(matrix: Matrix3x3d) -> Quaterniond
Create a quaternion from rotation matrix
def identity_init() -> Quaterniond
Construct an identity quaternion
def reflection(normal: Vector3d) -> Quaterniond
Reflection quaternion
def rotation(angle: Rad, normalized_axis: Vector3d) -> Quaterniond
Rotation quaternion
def rotation(normalized_from: Vector3d, normalized_to: Vector3d) -> Quaterniond
Quaternion rotating from a vector to another
def zero_init() -> Quaterniond
Construct a zero-initialized quaternion

Methods

def angle(self, /) -> Rad
Rotation angle of a unit quaternion
def axis(self, /) -> Vector3d
Rotation axis of a unit quaternion
def conjugated(self, /) -> Quaterniond
Conjugated quaternion
def dot(self, /) -> float
Dot product of the quaternion
def inverted(self, /) -> Quaterniond
Inverted quaternion
def inverted_normalized(self, /) -> Quaterniond
Inverted normalized quaternion
def is_normalized(self, /) -> bool
Whether the quaternion is normalized
def length(self, /) -> float
Quaternion length
def normalized(self, /) -> Quaterniond
Normalized quaternion (of unit length)
def reflect_vector(self, vector: Vector3d) -> Vector3d
Reflect a vector with a reflection quaternion
def to_matrix(self, /) -> Matrix3x3d
Convert to a rotation matrix
def transform_vector(self, vector: Vector3d) -> Vector3d
Rotate a vector with a quaternion
def transform_vector_normalized(self, vector: Vector3d) -> Vector3d
Rotate a vector with a normalized quaternion

Special methods

def __add__(self, arg0: Quaterniond, /) -> Quaterniond
Add a quaternion
def __eq__(self, arg0: Quaterniond, /) -> bool
Equality comparison
def __getstate__(self, /) -> bytes
Dumps the in-memory representation of quaternion components
def __iadd__(self, arg0: Quaterniond, /) -> Quaterniond
Add and assign a quaternion
def __imul__(self, arg0: float, /) -> Quaterniond
Multiply with a scalar and assign
def __init__(self, /) -> None
Default constructor
def __init__(self, arg0: Vector3d, arg1: float, /) -> None
Construct from a vector and a scalar
def __init__(self, arg0: typing.Tuple[typing.Tuple[float, float, float], float], /) -> None
Construct from a tuple
def __init__(self, arg0: Vector3d, /) -> None
Construct from a vector
def __init__(self, arg0: Quaternion, /) -> None
Construct from different underlying type
def __isub__(self, arg0: Quaterniond, /) -> Quaterniond
Subtract and assign a quaternion
def __itruediv__(self, arg0: float, /) -> Quaterniond
Divide with a scalar and assign
def __mul__(self, arg0: float, /) -> Quaterniond
Multiply with a scalar
def __mul__(self, arg0: Quaterniond, /) -> Quaterniond
Multiply with a quaternion
def __ne__(self, arg0: Quaterniond, /) -> bool
Non-equality comparison
def __neg__(self, /) -> Quaterniond
Negated quaternion
def __repr__(self, /) -> str
Object representation
def __rmul__(self, arg0: float, /) -> Quaterniond
Multiply a scalar with a quaternion
def __rtruediv__(self, arg0: float, /) -> Quaterniond
Divide a quaternion with a scalar and invert
def __setstate__(self, arg0: bytes, /) -> None
Treats the data as the in-memory representation of quaternion components
def __sub__(self, arg0: Quaterniond, /) -> Quaterniond
Subtract a quaternion
def __truediv__(self, arg0: float, /) -> Quaterniond
Divide with a scalar

Properties

scalar: float get set
Scalar part
vector: Vector3d get set
Vector part

Method documentation

def magnum.Quaterniond.from_matrix(matrix: Matrix3x3d) -> Quaterniond staticmethod

Create a quaternion from rotation matrix

Exceptions
ValueError If matrix is not a rotation

def magnum.Quaterniond.reflection(normal: Vector3d) -> Quaterniond staticmethod

Reflection quaternion

Exceptions
ValueError If normal is not normalized

def magnum.Quaterniond.rotation(angle: Rad, normalized_axis: Vector3d) -> Quaterniond staticmethod

Rotation quaternion

Exceptions
ValueError If normalized_axis is not normalized

def magnum.Quaterniond.angle(self, /) -> Rad

Rotation angle of a unit quaternion

Exceptions
ValueError If the quaternion is not normalized

def magnum.Quaterniond.axis(self, /) -> Vector3d

Rotation axis of a unit quaternion

Exceptions
ValueError If the quaternion is not normalized

def magnum.Quaterniond.inverted_normalized(self, /) -> Quaterniond

Inverted normalized quaternion

Exceptions
ValueError If the quaternion is not normalized

def magnum.Quaterniond.transform_vector_normalized(self, vector: Vector3d) -> Vector3d

Rotate a vector with a normalized quaternion

Exceptions
ValueError If the quaternion is not normalized

def magnum.Quaterniond.__setstate__(self, arg0: bytes, /) -> None

Treats the data as the in-memory representation of quaternion components

Exceptions
ValueError If the data size doesn’t match type size