Re: How to determine whether a Vector is in the View Frustum?
From: Kevin Spencer (kspencer_at_takempis.com)
Date: Tue, 7 Dec 2004 11:36:00 -0500
Okay, I've figured out that if the Z element of the vector is behind ( < )
the near clipping plane, I shouldn't render the text. However, although I
know the value used to set the near clipping plane, I don't know the Z-value
of that plane. Any ideas?
-- HTH, Kevin Spencer .Net Developer Microsoft MVP Neither a follower nor a lender be. "Kevin Spencer" <email@example.com> wrote in message news:ONWXFUH3EHA.3616@TK2MSFTNGP11.phx.gbl... > I'm working on a terrain-modelling app. I"m drawing labels for objects > directly on the screen. I use the Vector3.Project() method to determine the > position of the label on the screen. I'm checking the XY values of the > returned Vector to make sure that the text is inside the screen area, but it > is drawing labels for objects that are behind the viewer, as if they were in > front (as it is drawing on the screen). I need to figure out a way to tell > whether the vector of the object I'm using is inside the view frustum. Any > ideas? > > -- > Thank, > Kevin Spencer > .Net Developer > Microsoft MVP > Neither a follower > nor a lender be. > >