XMVector2Orthogonal

Computes a vector perpendicular to a 2D vector.

Syntax

XMVECTOR XMVector2Orthogonal(
         XMVECTOR V
)  

Parameters

V
Type: XMVECTOR 

2D vector.

Return value

Type: XMVECTOR 

Returns the 2D vector orthogonal to V.

Remarks

Note that a ‘cross-product’ in 2D is not well-defined. This function computes a generalized cross-product in 2D. XMVector2Cross is another possible interpretation of a ‘cross-product’ in 2D.

The following pseudocode demonstrates the operation of the function:

XMVECTOR Result;

Result.x = -V.y;
Result.y = V.x;
Result.z = 0;
Result.w = 0;

return Result;  

Requirements

Header: Declared in directxmath.h.