XMQuaternionIsIdentity function (directxmath.h)
Tests whether a specific quaternion is the identity quaternion.
Syntax
bool XM_CALLCONV XMQuaternionIsIdentity(
[in] FXMVECTOR Q
) noexcept;
Parameters
[in] Q
Quaternion to test.
Return value
Returns true if Q is the identity quaternion, or false otherwise.
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.
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 |