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Text File  |  1994-02-10  |  192b  |  7 lines
  1. // create an infinite planar surface
  2. plane
  3. {
  4.   y, // <X Y Z> unit surface normal, vector points "away from surface"
  5.   -1.0 // distance from the origin in the direction of the surface normal
  6. }
  7.