# XMVectorHermiteV function

Performs a Hermite spline interpolation, using the specified vectors.

## Syntax

``````XMVECTOR XM_CALLCONV XMVectorHermiteV(
FXMVECTOR Position0,
FXMVECTOR Tangent0,
FXMVECTOR Position1,
GXMVECTOR Tangent1,
HXMVECTOR T
);
``````

## Parameters

`Position0`

First position to interpolate from.

`Tangent0`

Tangent vector for the first position.

`Position1`

Second position to interpolate from.

`Tangent1`

Tangent vector for the second position.

`T`

Interpolating control factor with each component corresponding to a term of the Hermite equation.

## Return Value

Returns a vector containing the interpolation.

## Remarks

This function is identical to XMVectorHermite except that independent weighting factors may be 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 following pseudocode demonstrates the operation of the function:

``````
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]
``````

### Platform Requirements

Microsoft Visual Studio 2010 or Microsoft Visual Studio 2012 with the Windows SDK for Windows 8. Supported for Win32 desktop apps, Windows Store apps, and Windows Phone 8 apps.

## Requirements

Target Platform Windows
Header directxmath.h (include DirectXMath.h)