From 7bcdec4e8f433d0664518a7b9050f3cc1da1db20 Mon Sep 17 00:00:00 2001
From: Adam Frisby
Date: Thu, 1 May 2008 12:11:34 +0000
Subject: * Applying Mantis#1097 - Thanks Xantor! - Fix for llRound (now rounds
 in LL-compatible fashion, rather than using bankers rounding) -
 Implementation of llAngleBetween

---
 OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

(limited to 'OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs')

diff --git a/OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs b/OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs
index a3dcc6d..0773253 100644
--- a/OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs
+++ b/OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs
@@ -258,10 +258,11 @@ namespace OpenSim.Region.ScriptEngine.Common
             return (int)Math.Ceiling(f);
         }
 
+        // Xantor 01/May/2008 fixed midpointrounding (2.5 becomes 3.0 instead of 2.0, default = ToEven)
         public int llRound(double f)
         {
             m_host.AddScriptLPS(1);
-            return (int)Math.Round(f, 0);
+            return (int)Math.Round(f, MidpointRounding.AwayFromZero);
         }
 
         //This next group are vector operations involving squaring and square root. ckrinke
@@ -2926,11 +2927,13 @@ namespace OpenSim.Region.ScriptEngine.Common
             return (double)Math.Asin(val);
         }
 
+        // Xantor 30/apr/2008
         public double llAngleBetween(LSL_Types.Quaternion a, LSL_Types.Quaternion b)
         {
             m_host.AddScriptLPS(1);
-            NotImplemented("llAngleBetween");
-            return 0;
+
+           return (double) Math.Acos(a.x * b.x + a.y * b.y + a.z * b.z + a.s * b.s) * 2;
+//            NotImplemented("llAngleBetween");
         }
 
         public string llGetInventoryKey(string name)
-- 
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