Microsoft DirectX 9.0 SDK Update (October 2004)

Plane.DotNormal Method

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Note: This documentation is preliminary and is subject to change.

Computes the dot product of a plane and a 3-D vector. The w parameter of the vector is assumed to be 0.

Definition

Visual Basic .NET Public Shared Function DotNormal( _
    ByVal p As Plane, _
    ByVal v As Vector3 _
) As Single
C# public static float DotNormal(
    Plane p,
    Vector3 v
);
Managed C++ public: static float DotNormal(
    Plane p,
    Vector3 v
);
JScript .NET public static function DotNormal(
    p : Plane,
    v : Vector3
) : float;

Parameters

p Microsoft.DirectX.Plane. Source Plane structure.
v Microsoft.DirectX.Vector3. Source Vector3 structure.

Return Value

System.Single . A Single Leave Site value that represents the dot product of the plane and the 3-D vector.

Remarks

Given a plane (a, b, c, d) and a 3-D vector (x, y, z), this method's return value is a*x + b*y + c*z + d*0. The DotNormal method is useful for calculating the angle between the normal of the plane and another normal.


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