XMVectorGetByIndexPtr function (directxmath.h)
Retrieve, into an instance of a floating-point referenced by pointer, the value of one of the four components of an XMVECTOR Data Type containing floating-point data, referenced by index.
Syntax
void XM_CALLCONV XMVectorGetByIndexPtr(
[out] float *f,
FXMVECTOR V,
size_t i
) noexcept;
Parameters
[out] f
Pointer to an instance of a floating-point object that will receive the value of the i component of the
XMVECTOR Data Type object V.
V
A XMVECTOR Data Type containing floating-point data.
i
The index of the component to be retrieved.
Return value
None.
Remarks
The value of i must be positive and less than or equal to three ( 0 <= i <= 3 ).
The indexes have the following correspondence with XMVECTOR Data Type vector components:
| Index | Component |
|---|---|
0
|
x
|
1
|
y
|
2
|
z
|
3
|
w
|
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 (include DirectXMath.h) |