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- // Persistence of Vision Raytracer 2.0
- //
- // Direction Vectors for various Field of View angles.
- // Use in camera in form :
- //
- // direction <0, 0, FoV_45>
- //
- // The formula used to calculate these is: FoV = 0.5 / tan(angle/2)
- // You will also need to adjust the location vector if you change FoV and
- // want to keep the same visual distance from your scene.
-
- #declare FoV_15 = 7.595981
- #declare FoV_30 = 3.732166
- #declare FoV_45 = 2.414293
- #declare FoV_60 = 1.732113
- #declare FoV_75 = 1.303277
- #declare FoV_90 = 1.000046
- #declare FoV_105 = 0.767370
- #declare FoV_120 = 0.577391
- #declare FoV_135 = 0.414254
- #declare FoV_150 = 0.267991
- #declare FoV_165 = 0.131696
-
-