From 8b2af1071f37e45dc330524a4731581867616b21 Mon Sep 17 00:00:00 2001
From: dahlia <dahlia@nomail>
Date: Mon, 16 Feb 2015 23:51:37 -0800
Subject: [PATCH] Add NaN and Infinity tests for SOP Velocity and Acceleration
 setters.

---
 OpenSim/Framework/Util.cs                      | 16 ++++++++++++++++
 .../Region/Framework/Scenes/SceneObjectPart.cs | 18 +++++++++++++-----
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/OpenSim/Framework/Util.cs b/OpenSim/Framework/Util.cs
index 836fa5fcaa..56a90b1b5d 100644
--- a/OpenSim/Framework/Util.cs
+++ b/OpenSim/Framework/Util.cs
@@ -420,6 +420,22 @@ namespace OpenSim.Framework
             return x;
         }
 
+        /// <summary>
+        /// Check if any of the values in a Vector3 are NaN or Infinity
+        /// </summary>
+        /// <param name="v">Vector3 to check</param>
+        /// <returns></returns>
+        public static bool IsNanOrInfinity(Vector3 v)
+        {
+            if (float.IsNaN(v.X) || float.IsNaN(v.Y) || float.IsNaN(v.Z))
+                return true;
+
+            if (float.IsInfinity(v.X) || float.IsInfinity(v.Y) || float.IsNaN(v.Z))
+                return true;
+
+            return false;
+        }
+
         // Inclusive, within range test (true if equal to the endpoints)
         public static bool InRange<T>(T x, T min, T max)
             where T : IComparable<T>
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index 4a8be4255a..57ec1ae291 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -929,14 +929,17 @@ namespace OpenSim.Region.Framework.Scenes
 
             set
             {
-                m_velocity = value;
+                if (Util.IsNanOrInfinity(value))
+                    m_velocity = Vector3.Zero;
+                else
+                    m_velocity = value;
 
                 PhysicsActor actor = PhysActor;
                 if (actor != null)
                 {
                     if (actor.IsPhysical)
                     {
-                        actor.Velocity = value;
+                        actor.Velocity = m_velocity;
                         ParentGroup.Scene.PhysicsScene.AddPhysicsActorTaint(actor);
                     }
                 }
@@ -965,8 +968,7 @@ namespace OpenSim.Region.Framework.Scenes
             }
             set
             {
-                if (float.IsNaN(value.X) || float.IsNaN(value.Y) || float.IsNaN(value.Z)
-                    || float.IsInfinity(value.X) || float.IsInfinity(value.Y) || float.IsInfinity(value.Z))
+                if (Util.IsNanOrInfinity(value))
                     m_angularVelocity = Vector3.Zero;
                 else
                     m_angularVelocity = value;
@@ -981,7 +983,13 @@ namespace OpenSim.Region.Framework.Scenes
         public Vector3 Acceleration
         {
             get { return m_acceleration; }
-            set { m_acceleration = value; }
+            set 
+            {
+                if (Util.IsNanOrInfinity(value))
+                    m_acceleration = Vector3.Zero;
+                else
+                    m_acceleration = value;
+            }
         }
 
         public string Description { get; set; }