## SIVector3.MulByRotation

### Description

Right-multiplies the vector v by the rotation r and stores the result in this vector: this = v . r

### C# Syntax

    SIVector3.MulByRotation( SIVector3 in_pVector, SIRotation in_pRotation );

### Scripting Syntax

    SIVector3.MulByRotation( v, r );

### Parameters

Parameter | Type | Description
--- | --- | ---
v | SIVector3 | Operand vector
r | SIRotation | Operand rotation

### Examples

#### VBScript Example

    dim v1, v2, rotAngles, r1
    ' Create 3D vectors.
    set v1 = XSIMath.CreateVector3
    set v2 = XSIMath.CreateVector3
    set rotAngles = XSIMath.CreateVector3
    ' Create Rotation.
    set r1 = XSIMath.CreateRotation
    v1.Set 1.0, 0.0, 0.0
    rotAngles.Set 0.0, 0.0, 0.7853981633974483
    r1.SetFromXYZAngles rotAngles
    v2.MulByRotation v1, r1

### See Also

SIVector3.MulByRotationInPlace SIVector3 SIMatrix3 SIMatrix4 SIRotation SITransformation SIQuaternion