XMConvertFloatToHalfStream
XMConvertHalfToFloatStream
XMMatrixDecompose
XMPlaneTransformStream
XMVector2TransformCoordStream
XMVector2TransformNormalStream
XMVector2TransformStream
XMVector3ProjectStream
XMVector3TransformCoordStream
XMVector3TransformNormalStream
XMVector3TransformStream
XMVector3UnprojectStream
XMVector4TransformStream
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XMVectorGetByIndex method

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

A XMVECTOR Data Type containing integer data.

i

The index of the component to be retrieved.

Return value

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:

IndexComponent

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

Namespace

Use DirectX.

Header

DirectXMath.h

See also

XMVectorGetByIndexPtr
XMVectorSetByIndex

 

 

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