XMVectorHermiteV

Performs a Hermite spline interpolation, using the specified vectors.

Syntax

XMVECTOR XMVectorHermiteV(
         XMVECTOR Position0,
         XMVECTOR Tangent0,
         XMVECTOR Position1,
         GXMVECTOR Tangent1,
         XMVECTOR T
)  

Parameters

Position0
Type: XMVECTOR 

First position to interpolate from.

Tangent0
Type: XMVECTOR 

Tangent vector for the first position.

Position1
Type: XMVECTOR 

Second position to interpolate from.

Tangent1
Type: GXMVECTOR 

Tangent vector for the second position.

T
Type: XMVECTOR 

Interpolating control factor with each component corresponding to a term of the Hermite equation (see Remarks below).

Return value

Type: XMVECTOR 

Returns a vector containing the interpolation.

Remarks

This function is identical to XMVectorHermite except that independent weighting factors may supplied in T. As an example, you might want to calculate two sets of Hermite spline interpolation, using the x and y-components of the position vectors for one set of 2D positions and the z and w-components of the position vectors for the other set of 2D positions. The x and y-components of T would determine the interpolation factors for the first Hermite spline interpolation. Similarly, the z and w-components of T would determine the interpolation factors for the second Hermite spline interpolation.

The Hermite equation is given by the formula:

        Result[i] = (2*(T.x)^3 - 3*(T.x)^2 + 1) * Position0.[i]
        + ((T.y)^3 - 2*(T.y)^2 + (T.y)) * Tangent0.[i]
        + (-2*(T.z)^3 + 3*(T.z)^2) * Position1.[i]
        + ((T.w)^3 - *(T.w)^2) * Tangent1.[i]  

Requirements

Header: Declared in directxmath.h.