XMVector2Cross function (directxmath.h)

Article
02/22/2024

Computes the 2D cross product.

Syntax

XMVECTOR XM_CALLCONV XMVector2Cross(
  [in] FXMVECTOR V1,
  [in] FXMVECTOR V2
) noexcept;

Parameters

[in] V1

2D vector.

[in] V2

2D vector.

Return value

Returns a vector. The 2D cross product is replicated into each component.

Remarks

The following pseudocode demonstrates the operation of the function:

XMVECTOR Result;

Result.x = V1.x * V2.y - v1.y * V2.x;
Result.y = V1.x * V2.y - v1.y * V2.x;
Result.z = V1.x * V2.y - v1.y * V2.x;
Result.w = V1.x * V2.y - v1.y * V2.x;

return Result;

Note that a 'cross-product' in 2D is not well-defined. This function computes a geometric cross-product often used in 2D graphics. XMVector2Orthogonal is another possible interpretation of a 'cross-product' in 2D.

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)

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