## SIVector3.LinearlyInterpolate

### Description

Linearly interpolates between vectors v1 and v2 and places the result into this vector: this = (1-alpha)*v1 + alpha*v2

### C# Syntax

    SIVector3.LinearlyInterpolate( SIVector3 in_pVector1, SIVector3 in_pVector2, Double in_dAlpha );

### Scripting Syntax

    SIVector3.LinearlyInterpolate( v1, v2, alpha );

### Parameters

Parameter | Type | Description
--- | --- | ---
v1 | SIVector3 | Operand vector
v2 | SIVector3 | Operand vector
alpha | Floating Point value | Scalar interpolator
Possible Values: | Description:
[0.0, 1.0] | Domain of validity

### Examples

#### VBScript Example

    dim v1, v2, v3

    ' Create 3D vectors.

    set v1 = XSIMath.CreateVector3

    set v2 = XSIMath.CreateVector3

    set v3 = XSIMath.CreateVector3

    v1.Set 1.0, 2.0, 3.0

    v2.Set 3.0, 5.0, 6.0

    alpha = .7

    'v3 = (1 - alpha) * v1 + alpha * v2

    v3.LinearlyInterpolate v1, v2, alpha

### See Also

SIVector3 SIMatrix3 SIMatrix4 SIRotation SITransformation SIQuaternion