XMQuaternionInverse function (directxmath.h)
Computes the inverse of a quaternion.
Syntax
XMVECTOR XM_CALLCONV XMQuaternionInverse(
[in] FXMVECTOR Q
) noexcept;
Parameters
[in] Q
Quaternion to invert.
Return value
Returns the inverse of Q.
Remarks
The DirectXMath quaternion functions use an XMVECTOR 4-vector to represent quaternions, where the X, Y, and Z components are the vector part and the W component is the scalar part.
The following pseudocode demonstrates the operation of the function:
XMVECTOR Result;
float LengthSq = Q.x * Q.x + Q.y * Q.y + Q.z * Q.z + Q.w * Q.w;
Result.x = -Q.x / LengthSq;
Result.y = -Q.y / LengthSq;
Result.z = -Q.z / LengthSq;
Result.w = Q.w / LengthSq;
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
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | directxmath.h |