Quaternion class - game library

Constructors

Quaternion(double x, double y, double z, double w): Constructs a quaternion using the raw values x, y, z, and w.
factory
Quaternion.axisAngle(Vector3 axis, double angle): Constructs a quaternion from a rotation of angle around axis.
factory
Quaternion.copy(Quaternion original): Constructs a quaternion as a copy of original.
factory
Quaternion.dq(Quaternion q, Vector3 omega): Constructs a quaternion from time derivative of q with angular velocity omega.
factory
Quaternion.euler(double yaw, double pitch, double roll): Constructs a quaternion from yaw, pitch and roll.
factory
Quaternion.fromBuffer(ByteBuffer buffer, int offset): Constructs a quaternion with a storage that views given buffer starting at offset. offset has to be multiple of Float32List.bytesPerElement.
Quaternion.fromFloat32List(Float32List _qStorage): Constructs a quaternion with given Float32List as storage.
Quaternion.fromRotation(Matrix3 rotationMatrix): Constructs a quaternion from a rotation matrix rotationMatrix.
factory
Quaternion.fromTwoVectors(Vector3 a, Vector3 b): Constructs a quaternion to be the rotation that rotates vector a to b.
factory
Quaternion.identity(): Constructs a quaternion set to the identity quaternion.
factory
Quaternion.random(Random rn): Constructs a quaternion with a random rotation. The random number generator rn is used to generate the random numbers for the rotation.
factory

Properties

axis → Vector3: axis of rotation.
no setter
hashCode → int: The hash code for this object.
no setterinherited
length → double: Length.
no setter
length2 → double: Length squared.
no setter
radians → double: radians of rotation around the axis of the rotation.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
storage → Float32List: Access the internal storage of the quaternions components.
no setter
w ↔ double: Access the w component of the quaternion.
getter/setter pair
x ↔ double: Access the x component of the quaternion.
getter/setter pair
y ↔ double: Access the y component of the quaternion.
getter/setter pair
z ↔ double: Access the z component of the quaternion.
getter/setter pair

Methods

absoluteError(Quaternion correct) → double: Absolute error between this and correct.
add(Quaternion arg) → void: Add arg to this.
asRotationMatrix() → Matrix3: Returns a rotation matrix containing the same rotation as this.
clone() → Quaternion: Returns a new copy of this.
conjugate() → void: Conjugate this.
conjugated() → Quaternion: Conjugated copy of this.
copyRotationInto(Matrix3 rotationMatrix) → Matrix3: Set rotationMatrix to a rotation matrix containing the same rotation as this.
inverse() → void: Invert this.
inverted() → Quaternion: Inverted copy of this.
normalize() → double: Normalize this.
normalized() → Quaternion: Normalized copy of this.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
relativeError(Quaternion correct) → double: Relative error between this and correct.
rotate(Vector3 v) → Vector3: Rotates v by this.
rotated(Vector3 v) → Vector3: Returns a copy of v rotated by quaternion.
scale(double scale) → void: Scales this by scale.
scaled(double scale) → Quaternion: Scaled copy of this.
setAxisAngle(Vector3 axis, double radians) → void: Set the quaternion with rotation of radians around axis.
setDQ(Quaternion q, Vector3 omega) → void: Set the quaternion to the time derivative of q with angular velocity omega.
setEuler(double yaw, double pitch, double roll) → void: Set quaternion with rotation of yaw, pitch and roll.
setFrom(Quaternion source) → void: Copy source into this.
setFromRotation(Matrix3 rotationMatrix) → void: Set the quaternion with rotation from a rotation matrix rotationMatrix.
setFromTwoVectors(Vector3 a, Vector3 b) → void
setRandom(Random rn) → void: Set the quaternion to a random rotation. The random number generator rn is used to generate the random numbers for the rotation.
setValues(double x, double y, double z, double w) → void: Set the quaternion to the raw values x, y, z, and w.
sub(Quaternion arg) → void: Subtracts arg from this.
toString() → String: Printable string.
override

Operators

operator *(Quaternion other) → Quaternion: this rotated by other.
operator +(Quaternion other) → Quaternion: Returns copy of this + other.
operator -(Quaternion other) → Quaternion: Returns copy of this - other.
operator ==(Object other) → bool: The equality operator.
inherited
operator [](int i) → double: Access the component of the quaternion at the index i.
operator []=(int i, double arg) → void: Set the component of the quaternion at the index i.
operator unary-() → Quaternion: Returns negated copy of this.