Microsoft DirectX 8.1 (Visual Basic)

D3DXVec3Lerp

Performs a linear interpolation between two 3-D vectors.

D3DXVec3Lerp( _ 
    VOut As D3DVECTOR, _ 
    V1 As D3DVECTOR, _ 
    V2 As D3DVECTOR, _ 
    s As Single)

Parameters

VOut
D3DVECTOR type that is the result of the operation, the linear interpolation.
V1
A source D3DVECTOR type.
V2
A source D3DVECTOR type.
s
Parameter that linearly interpolates between the vectors.

Error Codes

If the function fails, an error is raised and Err.Number can be set to one of the following values.

D3DERR_INVALIDCALL
D3DERR_OUTOFVIDEOMEMORY

For information on trapping errors, see the Microsoft® Visual Basic® Error Handling topic.

Remarks

This function performs the linear interpolation based on the following formula: V1 + s(V2-V1).