From 7a67b726d5be8b7eb7d04eabdb98dc4e3beb9d71 Mon Sep 17 00:00:00 2001
From: dahlia
Date: Mon, 7 Sep 2009 17:12:17 -0700
Subject: random drive-by maths optimization in llRot2Euler() and llEuler2Rot()

---
 .../ScriptEngine/Shared/Api/Implementation/LSL_Api.cs    | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

(limited to 'OpenSim')

diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 16dd834..077315e 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -497,9 +497,9 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                                              NormalizeAngle(Math.Atan2(n, Math.Sqrt(p))),
                                              NormalizeAngle(Math.Atan2(2.0 * (r.z * r.s - r.x * r.y), (t.x - t.y - t.z + t.s))));
             else if (n > 0)
-                return new LSL_Vector(0.0, Math.PI / 2, NormalizeAngle(Math.Atan2((r.z * r.s + r.x * r.y), 0.5 - t.x - t.z)));
+                return new LSL_Vector(0.0, Math.PI * 0.5, NormalizeAngle(Math.Atan2((r.z * r.s + r.x * r.y), 0.5 - t.x - t.z)));
             else
-                return new LSL_Vector(0.0, -Math.PI / 2, NormalizeAngle(Math.Atan2((r.z * r.s + r.x * r.y), 0.5 - t.x - t.z)));
+                return new LSL_Vector(0.0, -Math.PI * 0.5, NormalizeAngle(Math.Atan2((r.z * r.s + r.x * r.y), 0.5 - t.x - t.z)));
         }
 
         /* From wiki:
@@ -553,12 +553,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
             double x,y,z,s;
 
-            double c1 = Math.Cos(v.x/2.0);
-            double c2 = Math.Cos(v.y/2.0);
-            double c3 = Math.Cos(v.z/2.0);
-            double s1 = Math.Sin(v.x/2.0);
-            double s2 = Math.Sin(v.y/2.0);
-            double s3 = Math.Sin(v.z/2.0);
+            double c1 = Math.Cos(v.x * 0.5);
+            double c2 = Math.Cos(v.y * 0.5);
+            double c3 = Math.Cos(v.z * 0.5);
+            double s1 = Math.Sin(v.x * 0.5);
+            double s2 = Math.Sin(v.y * 0.5);
+            double s3 = Math.Sin(v.z * 0.5);
 
             x = s1*c2*c3+c1*s2*s3;
             y = c1*s2*c3-s1*c2*s3;
-- 
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