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Freelog 22
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BAS
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Render32
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INCLUDE
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FOV.INC
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1996-02-29
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702b
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24 lines
// 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