XMVectorHermite function

Performs a Hermite spline interpolation, using the specified vectors.

Syntax

XMVECTOR XM_CALLCONV XMVectorHermite(
  FXMVECTOR Position0,
  FXMVECTOR Tangent0,
  FXMVECTOR Position1,
  GXMVECTOR Tangent1,
  float     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

Interpolation control factor.

Return Value

Returns a vector containing the interpolation.

Remarks

The following pseudocode demonstrates the operation of the function:

XMVECTOR Result;

float t2 = t * t; float t3 = t2* t;

float P0 = 2.0f * t3 - 3.0f * t2 + 1.0f; float T0 = t3 - 2.0f * t2 + t; float P1 = -2.0f * t3 + 3.0f * t2; float T1 = t3 - t2;

Result.x = P0 * Position0.x + T0 * Tangent0.x + P1 * Position1.x + T1 * Tangent1.x; Result.y = P0 * Position0.y + T0 * Tangent0.y + P1 * Position1.y + T1 * Tangent1.y; Result.z = P0 * Position0.z + T0 * Tangent0.z + P1 * Position1.z + T1 * Tangent1.z; Result.w = P0 * Position0.w + T0 * Tangent0.w + P1 * Position1.w + T1 * Tangent1.w;

return Result;

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)

See Also

Geometric Vector Functions

XMVectorHermiteV