From 8c445dac6778aa2fcfc42736a563e8de101bd817 Mon Sep 17 00:00:00 2001
From: Justin Clark-Casey (justincc)
Date: Fri, 6 Jan 2012 21:12:22 +0000
Subject: Add script instruction count back to llRot2Euler.  Other minor
 formatting/doc changes.

---
 .../ScriptEngine/Shared/Api/Implementation/LSL_Api.cs      | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

(limited to 'OpenSim/Region/ScriptEngine/Shared/Api/Implementation')

diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index d6316b2..a35e75f 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -468,10 +468,19 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         //Now we start getting into quaternions which means sin/cos, matrices and vectors. ckrinke
 
-        // Using algorithm based off http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToEuler/quat_2_euler_paper_ver2-1.pdf
-        // to avoid issues with singularity and rounding with Y rotation of +/- PI/2
+        /// <summary>
+        /// Convert an LSL rotation to a Euler vector.
+        /// </summary>
+        /// <remarks>
+        /// Using algorithm based off http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToEuler/quat_2_euler_paper_ver2-1.pdf
+        /// to avoid issues with singularity and rounding with Y rotation of +/- PI/2
+        /// </remarks>
+        /// <param name="r"></param>
+        /// <returns></returns>
         public LSL_Vector llRot2Euler(LSL_Rotation r)
         {
+            m_host.AddScriptLPS(1);
+
             LSL_Vector v = new LSL_Vector(0.0, 0.0, 1.0) * r;   // Z axis unit vector unaffected by Z rotation component of r.
             double m = LSL_Vector.Mag(v);                       // Just in case v isn't normalized, need magnitude for Asin() operation later.
             if (m == 0.0) return new LSL_Vector();
@@ -482,6 +491,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             // Rotate X axis unit vector by r and unwind the X and Y rotations leaving only the Z rotation
             v = new LSL_Vector(1.0, 0.0, 0.0) * ((r * new LSL_Rotation(Math.Sin(-x / 2.0), 0.0, 0.0, Math.Cos(-x / 2.0))) * new LSL_Rotation(0.0, Math.Sin(-y / 2.0), 0.0, Math.Cos(-y / 2.0)));
             double z = Math.Atan2(v.y, v.x);
+
             return new LSL_Vector(x, y, z);
         }
 
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