XMVector2Reflect method
Reflects an incident 2D vector across a 2D normal vector.
Syntax
XMVECTOR XMVector2Reflect( [in] XMVECTOR Incident, [in] XMVECTOR Normal );
Parameters
- Incident [in]
-
2D incident vector to reflect.
- Normal [in]
-
2D normal vector to reflect the incident vector across.
Return value
Returns the reflected incident angle.
Remarks
The following pseudocode demonstrates the operation of the function:
XMVECTOR Result; float s = 2.0f * (Incident.x * Normal.x + Incident.y * Normal.y); // 2.0 * dot(Incident, Normal); Result.x = Incident.x - s * Normal.x; Result.y = Incident.y - s * Normal.y; Result.z = undefined; Result.w = undefined; 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
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Use DirectX. |
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Header |
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See also
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