## SIQuaternion.Sub

### Description

Subtracts the quaternion q2 from the quaternion q1 and stores the result in this quaternion.

### C# Syntax

    SIQuaternion.Sub( SIQuaternion in_pQuat1, SIQuaternion in_pQuat2 );

### Scripting Syntax

    SIQuaternion.Sub( q1, q2 );

### Parameters

Parameter | Type | Description
--- | --- | ---
q1 | SIQuaternion | quaternion operand
q2 | SIQuaternion | quaternion operand

### Examples

#### VBScript Example

    dim q1, q2, q3
    ' Create Quaternions.
    set q1 = XSIMath.CreateQuaternion(1.0, 1.0, 2.0, 3.0)
    set q2 = XSIMath.CreateQuaternion(1.0, 4.0, 5.0, 6.0)
    set q3 = XSIMath.CreateQuaternion
    'q3 = q1 - q2
    q3.Sub q1, q2

### See Also

SIQuaternion.SubInPlace SIQuaternion.Add SIQuaternion.AddInPlace SIVector3 SIMatrix3 SIMatrix4 SIRotation SITransformation SIQuaternion