Class DQuaternion

Namespace

SearchAThing.Sci

Assembly

netcore-sci.dll

Quaternion implementation using doubles for purpose of Vector3D.RotateAboutAxis and Vector3D.RotateAs references:

• http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/index.htm
• https://www.3dgep.com/understanding-quaternions/
• http://www.ncsa.illinois.edu/People/kindr/emtc/quaternions/

public class DQuaternion

Inheritance

object

DQuaternion

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

unit test

Constructors

DQuaternion(Vector3D, double)

build quaternion from axis and angle. axis will be subjected to normalization.

public DQuaternion(Vector3D axis, double alphaRad)

Parameters

axis Vector3D

alphaRad double

DQuaternion(double, Vector3D)

direct construct quaternion q=[s, v]

public DQuaternion(double s, Vector3D v)

Parameters

s double

v Vector3D

Properties

Identity

Identity qi = [1, nullvector]

public static DQuaternion Identity { get; }

Property Value

DQuaternion

v

public Vector3D v { get; }

Property Value

Vector3D

Methods

Conjugate()

Conjugate q* = [s, -v]

public DQuaternion Conjugate()

Returns

DQuaternion

Operators

operator *(DQuaternion, DQuaternion)

Multiply [sa, va] * [sb, vb] = [sa * sb - va * vb, va x vb + sa * vb + sb * va]

public static DQuaternion operator *(DQuaternion qa, DQuaternion qb)

Parameters

qa DQuaternion

qb DQuaternion

Returns

DQuaternion