## SIVector3.ScaleAddInPlace

### Description

Sets the value of this vector to the scalar multiplication of itself by s and then adds vector v: this = s*this + v

### C# Syntax

    SIVector3.ScaleAddInPlace( Double in_dScalar, SIVector3 in_pVector );

### Scripting Syntax

    SIVector3.ScaleAddInPlace( s, v1, v2 );

### Parameters

Parameter | Type | Description
--- | --- | ---
s | Floating Point value | Scalar multiplicator of vector v1
v1 | SIVector3 | Operand vector
v2 | SIVector3 | Operand vector

### Examples

#### VBScript Example

    dim v1, v2
    ' Create 3D vectors.
    set v1 = XSIMath.CreateVector3(1.0, 2.0, 3.0)
    set v2 = XSIMath.CreateVector3(3.0, 4.0, 5.0)
    'v1 = 2.5 * v1 + v2
    v1.ScaleAddInPlace 2.5, v2

### See Also

SIVector3.ScaleAdd SIVector3 SIMatrix3 SIMatrix4 SIRotation SITransformation SIQuaternion