private static Ray3D ComputeIntersectionLine(ref Plane3D p1, ref Plane3D p2)
{
Ray3D ray = new Ray3D
{
Direction = (Vector3D)Normal3D.Cross(p1.Normal, p2.Normal)
};
float num = ray.Direction.LengthSquared();
ray.Origin = (Point3D)(Vector3D.Cross((-p1.D * p2.Normal) + (p2.D * p1.Normal), ray.Direction) / num);
return(ray);
}
public ContainmentType Contains(Point3D point)
{
// If a point is on the POSITIVE side of the plane, then the point is not contained within the frustum
foreach (var plane in planes)
{
// Check the top
Plane3D tempPlane = plane;
float val = PlaneHelper.ClassifyPoint(ref point, ref tempPlane);
if (val > 0)
{
return(ContainmentType.Disjoint);
}
}
// If we get here, it means that the point was on the correct side of each plane to be
// contained. Therefore this point is contained
return(ContainmentType.Contains);
}
private static Point3D ComputeIntersection(ref Plane3D plane, ref Ray3D ray)
{
float num = (-plane.D - Vector3D.Dot(plane.Normal, (Vector3D)ray.Origin)) / Vector3D.Dot(plane.Normal, ray.Direction);
return(ray.Origin + ray.Direction * num);
}
