public static void BuildPlane(ref Vector3 n, ref Vector3 p, out NormalizedPlane plane)
{
plane.A = n.X;
plane.B = n.Y;
plane.C = n.Z;
Vector3.Dot(ref n, ref p, out plane.D);
plane.D = -plane.D;
}
public static void BuildPlane(ref Vector3 p0, ref Vector3 p1, ref Vector3 p2, out NormalizedPlane plane)
{
Vector3 n = Vector3.Cross((p1 - p0), (p2 - p0));
n.Normalize();
BuildPlane(ref n, ref p0, out plane);
}