Rotates a 3d vector. This operation is also called conjugation, because the result is the same as (q.Conjugate()*(0,x,y,x)*q/q.LengthSquared).Vector.

Namespace: Rhino.Geometry
Assembly: RhinoCommon (in RhinoCommon.dll) Version: Rhino 6.0

C#

public Vector3d Rotate(
	Vector3d v
)

VB

Public Function Rotate ( 
	v As Vector3d
) As Vector3d

v

Type: Rhino.Geometry.Vector3d
The vector to be rotated.

Type: Vector3d
Rv, where R is the rotation defined by the unit quaternion. This is mathematically the same as the values (Inverse(q)(0,x,y,z)q).Vector and (q.Conjugate()(0,x,y,x)*q/q.LengthSquared).Vector.

If you need to rotate more than a dozen or so vectors, it will be more efficient to calculate the rotation matrix once and use it repeatedly.

Supported in: 6.0.16224.21491, 5D58w

Quaternion Structure
Rhino.Geometry Namespace