OrdinaryMagician/vkdoom_m
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- make FieldOfView a real angle and remove all uses of finetangent.

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This commit is contained in:
Christoph Oelckers 2016-04-28 13:59:06 +02:00
commit 027b8d29b8
8 changed files with 19 additions and 62 deletions
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4
src/r_main.cpp
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@ -179,7 +179,7 @@ static inline int viewangletox(int i)
// Don't waste time calculating the tangent of values outside the valid range.
// Checking the index where tan(i) becomes too large is a lot faster
if (i <= 604) // 604 is the highest index with finetangent < -2*FRACUNIT
if (i <= 604) // 604 is the highest index with tan < -2
{
return viewwidth + 1;
}
@ -207,7 +207,7 @@ void R_InitTextureMapping ()
FocalLengthY = FocalLengthX * YaspectMul;
// This is 1/FocalTangent before the widescreen extension of FOV.
viewingrangerecip = DivScale32(1, finetangent[FINEANGLES/4+(FieldOfView/2)]);
viewingrangerecip = FLOAT2FIXED(1. / tan(FieldOfView.Radians() / 2));
// [RH] Do not generate viewangletox, because texture mapping is no
// longer done with trig, so it's not needed.