From: cloudwalk <cloudwalk@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Wed, 16 Dec 2020 19:19:59 +0000 (+0000)
Subject: mathlib: Simplify VectorNormalizeLength to use existing math macros
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=0b5e8b49f3ed65b746481dc175d67daf0c48a830;p=xonotic%2Fdarkplaces.git

mathlib: Simplify VectorNormalizeLength to use existing math macros

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@13066 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/mathlib.c b/mathlib.c
index cf9e24a8..4c19dfe1 100644
--- a/mathlib.c
+++ b/mathlib.c
@@ -762,21 +762,14 @@ void AngleMatrix (const vec3_t angles, const vec3_t translate, vec_t matrix[][4]
 // LadyHavoc: renamed this to Length, and made the normal one a #define
 float VectorNormalizeLength (vec3_t v)
 {
-	float length, ilength;
+	float length;
 
-	length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
-	length = sqrt (length);
+	length = sqrt(DotProduct(v,v));
 
 	if (length)
-	{
-		ilength = 1/length;
-		v[0] *= ilength;
-		v[1] *= ilength;
-		v[2] *= ilength;
-	}
+		VectorScale(v, 1 / length, v);
 
 	return length;
-
 }