XMVectorGetByIndex

Retrieve the value of one of the four components of an XMVECTOR Data Type containing floating-point data by index.

Syntax

float XMVectorGetByIndex(
         XMVECTOR V,
         size_t i
)

Parameters

V
Type: XMVECTOR 

A XMVECTOR Data Type containing integer data.

i
Type: size_t 

The index of the component to be retrieved.

Return value

Type: float 

The floating-point value of the selected component.

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

Requirements

Header: Declared in directxmath.h.