From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Sat, 26 Oct 2002 15:23:58 +0000 (+0000)
Subject: fix for drawing explosions and sky twice as much as necessary (!), no longer does... 
X-Git-Tag: RELEASE_0_2_0_RC1~114
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=31395fccff216a4286722ccaa6ef5b0bb57f083e;p=xonotic%2Fdarkplaces.git

fix for drawing explosions and sky twice as much as necessary (!), no longer does a 360 degree sweep on both axis, one axis is only 180 degrees


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@2564 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/r_explosion.c b/r_explosion.c
index aa08b1bf..b5654092 100644
--- a/r_explosion.c
+++ b/r_explosion.c
@@ -103,8 +103,8 @@ int R_ExplosionVert(int column, int row)
 	int i;
 	float a, b, c;
 	i = row * (EXPLOSIONGRID + 1) + column;
-	a = row * M_PI * 2 / EXPLOSIONGRID;
-	b = column * M_PI * 2 / EXPLOSIONGRID;
+	a = ((double) row / EXPLOSIONGRID) * M_PI * 2;
+	b = (((double) column / EXPLOSIONGRID) + 0.5) * M_PI;
 	c = cos(b);
 	explosionpoint[i][0] = cos(a) * c;
 	explosionpoint[i][1] = sin(a) * c;
diff --git a/r_sky.c b/r_sky.c
index 63f2820c..d47aea60 100644
--- a/r_sky.c
+++ b/r_sky.c
@@ -207,10 +207,10 @@ static void skyspherecalc(void)
 		for (i = 0;i <= skygridx;i++)
 		{
 			b = i * skygridxrecip;
-			x = cos(b * M_PI * 2);
+			x = cos((b + 0.5) * M_PI);
 			v[0] = ax*x * dx;
 			v[1] = ay*x * dy;
-			v[2] = -sin(b * M_PI * 2) * dz;
+			v[2] = -sin((b + 0.5) * M_PI) * dz;
 			length = 3.0f / sqrt(v[0]*v[0]+v[1]*v[1]+(v[2]*v[2]*9));
 			*texcoord++ = v[0] * length;
 			*texcoord++ = v[1] * length;