On Tue, 3 Apr 2001 17:08:57 +0200, Zeger Knaepen wrote:
>> That's about what the vista buffer does IIRC.
>So, how does it work with other camera_types?

The short answer is that it doesn't.  From the docs:

  The vista buffer is created by projecting the bounding box hierarchy onto 
  the screen and determining the rectangular areas that are covered by each 
  of the elements in the hierarchy. Only those objects whose rectangles 
  enclose a given pixel are tested by the primary viewing ray. The vista 
  buffer can only be used with perspective and orthographic cameras because 
  they rely on a fixed viewpoint and a reasonable projection (i. e. straight 
  lines have to stay straight lines after the projection).

-- 
Ron Parker   http://www2.fwi.com/~parkerr/traces.html
My opinions.  Mine.  Not anyone else's.

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