## SIQuaternion.NegateInPlace

### Description

Negates this quaternion in place.

### C# Syntax

    SIQuaternion.NegateInPlace();

### Scripting Syntax

    SIQuaternion.NegateInPlace();

### Examples

#### VBScript Example

    dim q1

    ' Create Quaternion.

    set q1 = XSIMath.CreateQuaternion(1.0, 1.0, 2.0, 3.0)

    'q1 = -q1

    q1.NegateInPlace

### See Also

SIQuaternion.Negate SIVector3 SIMatrix3 SIMatrix4 SIRotation SITransformation SIQuaternion