private Vector3 GetTopBottomIntersectionPoint(Vector3 A, FPlane cbPlane, FPlane incidentPlane)
{
Vector3 result;
Vector3 acNormal = new Vector3(incidentPlane.X, incidentPlane.Y, incidentPlane.Z);
Vector3 acRayDirection = Vector3.Cross(acNormal, RightVector);
Vector3 cbNormal = new Vector3(cbPlane.X, cbPlane.Y, cbPlane.Z);
// if ac ray is opposite directed - invert it's direction
acRayDirection *= Vector3.Dot(cbNormal, acRayDirection) > 0.0 ? 1 : -1;
FRay acRay = new FRay(A, acRayDirection);
result = GeometryMath.GetIntersectionRayPlane(cbPlane, acRay);
return(result);
}