From 5b86b8991c7408ba7ebb78d0d6ff4438d447936e Mon Sep 17 00:00:00 2001
From: Jaime Ita Passos <jp6781615@gmail.com>
Date: Sun, 16 May 2021 21:43:52 -0300
Subject: [PATCH] Use floating point trigonometry
---
src/r_plane.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/src/r_plane.c b/src/r_plane.c
index d26c124ef..4c757d8ca 100644
--- a/src/r_plane.c
+++ b/src/r_plane.c
@@ -368,11 +368,11 @@ visplane_t *R_FindPlane(fixed_t height, INT32 picnum, INT32 lightlevel,
if (plangle != 0)
{
// Add the view offset, rotated by the plane angle.
- fixed_t cosinecomponent = FINECOSINE(plangle>>ANGLETOFINESHIFT);
- fixed_t sinecomponent = FINESINE(plangle>>ANGLETOFINESHIFT);
- fixed_t oldxoff = xoff;
- xoff = FixedMul(xoff,cosinecomponent)+FixedMul(yoff,sinecomponent);
- yoff = -FixedMul(oldxoff,sinecomponent)+FixedMul(yoff,cosinecomponent);
+ float ang = ANG2RAD(plangle);
+ float x = FixedToFloat(xoff);
+ float y = FixedToFloat(yoff);
+ xoff = FloatToFixed(x * cos(ang) + y * sin(ang));
+ yoff = FloatToFixed(-x * sin(ang) + y * cos(ang));
}
}
--
GitLab