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XMPlaneNormalizeEst function (directxmath.h)

  • Article

Estimates the coefficients of a plane so that coefficients of x, y, and z form a unit normal vector.

Syntax

XMVECTOR XM_CALLCONV XMPlaneNormalizeEst(
  [in] FXMVECTOR P
) noexcept;

Parameters

[in] P

XMVECTOR describing the plane coefficients (A, B, C, D) for the plane equation Ax+By+Cz+D=0.

Return value

Returns an estimation of the normalized plane as a 4D vector whose components are the plane coefficients (A, B, C, D) for the plane equation Ax+By+Cz+D=0.

Remarks

Est functions offer increased performance at the expense of reduced accuracy. Est functions are appropriate for non-critical calculations where accuracy can be sacrificed for speed. The exact amount of lost accuracy and speed increase are platform dependent.

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

See also

DirectXMath Library Plane Functions

XMPlaneNormalize