XMPlaneNormalizeEst

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

Syntax

XMVECTOR XMPlaneNormalizeEst(
         XMVECTOR P
)  

Parameters

P
Type: XMVECTOR 

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

Return value

Type: XMVECTOR 

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.

Requirements

Header: Declared in directxmath.h.