* Moving all of the prioritization/reprioritization code into a new file Prioritizer.cs

* Simplified the interest management code to make it easier to add new policies. Prioritization and reprioritization share code paths now
* Improved the distance and front back policies to always give your avatar the highest priority

15 files changed, 207 insertions, 315 deletions

diff --git a/OpenSim/Client/MXP/ClientStack/MXPClientView.cs b/OpenSim/Client/MXP/ClientStack/MXPClientView.cs
index a62d897..3e92658 100644
--- a/OpenSim/Client/MXP/ClientStack/MXPClientView.cs
+++ b/OpenSim/Client/MXP/ClientStack/MXPClientView.cs
@@ -1065,7 +1065,7 @@ namespace OpenSim.Client.MXP.ClientStack
             throw new System.NotImplementedException();
         }
 
-        public void ReprioritizeUpdates(UpdatePriorityHandler handler)
+        public void ReprioritizeUpdates()
         {
         }
 
diff --git a/OpenSim/Client/Sirikata/ClientStack/SirikataClientView.cs b/OpenSim/Client/Sirikata/ClientStack/SirikataClientView.cs
index d1f0988..c293480 100644
--- a/OpenSim/Client/Sirikata/ClientStack/SirikataClientView.cs
+++ b/OpenSim/Client/Sirikata/ClientStack/SirikataClientView.cs
@@ -609,7 +609,7 @@ namespace OpenSim.Client.Sirikata.ClientStack
             throw new System.NotImplementedException();
         }
 
-        public void ReprioritizeUpdates(UpdatePriorityHandler handler)
+        public void ReprioritizeUpdates()
         {
             throw new System.NotImplementedException();
         }
diff --git a/OpenSim/Client/VWoHTTP/ClientStack/VWHClientView.cs b/OpenSim/Client/VWoHTTP/ClientStack/VWHClientView.cs
index c0da326..51026ab 100644
--- a/OpenSim/Client/VWoHTTP/ClientStack/VWHClientView.cs
+++ b/OpenSim/Client/VWoHTTP/ClientStack/VWHClientView.cs
@@ -615,7 +615,7 @@ namespace OpenSim.Client.VWoHTTP.ClientStack
             throw new System.NotImplementedException();
         }
 
-        public void ReprioritizeUpdates(UpdatePriorityHandler handler)
+        public void ReprioritizeUpdates()
         {
             throw new System.NotImplementedException();
         }
diff --git a/OpenSim/Framework/IClientAPI.cs b/OpenSim/Framework/IClientAPI.cs
index 00681cf..f51bf71 100644
--- a/OpenSim/Framework/IClientAPI.cs
+++ b/OpenSim/Framework/IClientAPI.cs
@@ -458,8 +458,6 @@ namespace OpenSim.Framework
     public delegate void PlacesQuery(UUID QueryID, UUID TransactionID, string QueryText, uint QueryFlags, byte Category, string SimName, IClientAPI client);
 
     public delegate void AgentFOV(IClientAPI client, float verticalAngle);
-
-    public delegate double UpdatePriorityHandler(UpdatePriorityData data);
     
     public delegate void MuteListEntryUpdate(IClientAPI client, UUID MuteID, string Name, int Flags,UUID AgentID);
     
@@ -571,17 +569,16 @@ namespace OpenSim.Framework
         public float dwell;
     }
 
-    public struct UpdatePriorityData {
-        private double m_priority;
-        private uint m_localID;
+    public class EntityUpdate
+    {
+        public ISceneEntity Entity;
+        public PrimUpdateFlags Flags;
 
-        public UpdatePriorityData(double priority, uint localID) {
-            this.m_priority = priority;
-            this.m_localID = localID;
+        public EntityUpdate(ISceneEntity entity, PrimUpdateFlags flags)
+        {
+            Entity = entity;
+            Flags = flags;
         }
-
-        public double priority { get { return this.m_priority; } }
-        public uint localID { get { return this.m_localID; } }
     }
 
     /// <summary>
@@ -1024,7 +1021,7 @@ namespace OpenSim.Framework
 
         void SendAvatarDataImmediate(ISceneEntity avatar);
         void SendPrimUpdate(ISceneEntity entity, PrimUpdateFlags updateFlags);
-        void ReprioritizeUpdates(UpdatePriorityHandler handler);
+        void ReprioritizeUpdates();
         void FlushPrimUpdates();
 
         void SendInventoryFolderDetails(UUID ownerID, UUID folderID, List<InventoryItemBase> items,
diff --git a/OpenSim/Framework/ISceneEntity.cs b/OpenSim/Framework/ISceneEntity.cs
index fa3c514..5ac364f 100644
--- a/OpenSim/Framework/ISceneEntity.cs
+++ b/OpenSim/Framework/ISceneEntity.cs
@@ -33,5 +33,6 @@ namespace OpenSim.Framework
     {
         UUID UUID { get; }
         uint LocalId { get; }
+        Vector3 AbsolutePosition { get; }
     }
 }
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
index c8a542b..9eb35fa 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
@@ -50,18 +50,6 @@ using Nini.Config;
 
 namespace OpenSim.Region.ClientStack.LindenUDP
 {
-    public class EntityUpdate
-    {
-        public ISceneEntity Entity;
-        public PrimUpdateFlags Flags;
-
-        public EntityUpdate(ISceneEntity entity, PrimUpdateFlags flags)
-        {
-            Entity = entity;
-            Flags = flags;
-        }
-    }
-
     public delegate bool PacketMethod(IClientAPI simClient, Packet packet);
 
     /// <summary>
@@ -325,6 +313,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         private int m_cachedTextureSerial;
         private PriorityQueue m_entityUpdates;
+        private Prioritizer m_prioritizer;
 
         /// <value>
         /// List used in construction of data blocks for an object update packet.  This is to stop us having to
@@ -462,6 +451,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             m_propertiesPacketTimer = new Timer(100);
             m_propertiesPacketTimer.Elapsed += ProcessObjectPropertiesPacket;
 
+            m_prioritizer = new Prioritizer(m_scene);
+
             RegisterLocalPacketHandlers();
         }
 
@@ -3457,14 +3448,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// </summary>
         public void SendPrimUpdate(ISceneEntity entity, PrimUpdateFlags updateFlags)
         {
-            double priority;
-
-            if (entity is SceneObjectPart)
-                priority = ((SceneObjectPart)entity).ParentGroup.GetUpdatePriority(this);
-            else if (entity is ScenePresence)
-                priority = ((ScenePresence)entity).GetUpdatePriority(this);
-            else
-                priority = 0.0d;
+            double priority = m_prioritizer.GetUpdatePriority(this, entity);
 
             lock (m_entityUpdates.SyncRoot)
                 m_entityUpdates.Enqueue(priority, new EntityUpdate(entity, updateFlags), entity.LocalId);
@@ -3613,19 +3597,23 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             #endregion Packet Sending
         }
 
-        public void ReprioritizeUpdates(UpdatePriorityHandler handler)
+        public void ReprioritizeUpdates()
         {
             //m_log.Debug("[CLIENT]: Reprioritizing prim updates for " + m_firstName + " " + m_lastName);
 
-            PriorityQueue.UpdatePriorityHandler update_priority_handler =
-                delegate(ref double priority, uint local_id)
-                {
-                    priority = handler(new UpdatePriorityData(priority, local_id));
-                    return priority != double.NaN;
-                };
-
             lock (m_entityUpdates.SyncRoot)
-                m_entityUpdates.Reprioritize(update_priority_handler);
+                m_entityUpdates.Reprioritize(UpdatePriorityHandler);
+        }
+
+        private bool UpdatePriorityHandler(ref double priority, uint localID)
+        {
+            EntityBase entity;
+            if (m_scene.Entities.TryGetValue(localID, out entity))
+            {
+                priority = m_prioritizer.GetUpdatePriority(this, entity);
+            }
+
+            return priority != double.NaN;
         }
 
         public void FlushPrimUpdates()
diff --git a/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs b/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs
index aac47d1..967438f 100644
--- a/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs
+++ b/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs
@@ -548,7 +548,7 @@ namespace OpenSim.Region.Examples.SimpleModule
         {
         }
 
-        public void ReprioritizeUpdates(UpdatePriorityHandler handler)
+        public void ReprioritizeUpdates()
         {
         }
 
diff --git a/OpenSim/Region/Framework/Scenes/EntityBase.cs b/OpenSim/Region/Framework/Scenes/EntityBase.cs
index 1c76c54..4e25c46 100644
--- a/OpenSim/Region/Framework/Scenes/EntityBase.cs
+++ b/OpenSim/Region/Framework/Scenes/EntityBase.cs
@@ -28,11 +28,12 @@
 using System;
 using System.Runtime.Serialization;
 using System.Security.Permissions;
+using OpenSim.Framework;
 using OpenMetaverse;
 
 namespace OpenSim.Region.Framework.Scenes
 {
-    public abstract class EntityBase
+    public abstract class EntityBase : ISceneEntity
     {
         /// <summary>
         /// The scene to which this entity belongs
diff --git a/OpenSim/Region/Framework/Scenes/Prioritizer.cs b/OpenSim/Region/Framework/Scenes/Prioritizer.cs
new file mode 100644
index 0000000..af25014
--- /dev/null
+++ b/OpenSim/Region/Framework/Scenes/Prioritizer.cs
@@ -0,0 +1,122 @@
+using System;
+using System.Collections.Generic;
+using log4net;
+using Nini.Config;
+using OpenSim.Framework;
+using OpenMetaverse;
+
+namespace OpenSim.Region.Framework.Scenes
+{
+    public enum UpdatePrioritizationSchemes
+    {
+        Time = 0,
+        Distance = 1,
+        SimpleAngularDistance = 2,
+        FrontBack = 3,
+    }
+
+    public class Prioritizer
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+
+        private Scene m_scene;
+
+        public Prioritizer(Scene scene)
+        {
+            m_scene = scene;
+        }
+
+        public double GetUpdatePriority(IClientAPI client, ISceneEntity entity)
+        {
+            switch (m_scene.UpdatePrioritizationScheme)
+            {
+                case UpdatePrioritizationSchemes.Time:
+                    return GetPriorityByTime();
+                case UpdatePrioritizationSchemes.Distance:
+                    return GetPriorityByDistance(client, entity);
+                case UpdatePrioritizationSchemes.SimpleAngularDistance:
+                    return GetPriorityByDistance(client, entity);
+                case UpdatePrioritizationSchemes.FrontBack:
+                    return GetPriorityByFrontBack(client, entity);
+                default:
+                    throw new InvalidOperationException("UpdatePrioritizationScheme not defined.");
+            }
+        }
+
+        private double GetPriorityByTime()
+        {
+            return DateTime.UtcNow.ToOADate();
+        }
+
+        private double GetPriorityByDistance(IClientAPI client, ISceneEntity entity)
+        {
+            ScenePresence presence = m_scene.GetScenePresence(client.AgentId);
+            if (presence != null)
+            {
+                // If this is an update for our own avatar give it the highest priority
+                if (presence == entity)
+                    return 0.0;
+
+                // Use the camera position for local agents and avatar position for remote agents
+                Vector3 presencePos = (presence.IsChildAgent) ?
+                    presence.AbsolutePosition :
+                    presence.CameraPosition;
+
+                // Use group position for child prims
+                Vector3 entityPos;
+                if (entity is SceneObjectPart)
+                    entityPos = m_scene.GetGroupByPrim(entity.LocalId).AbsolutePosition;
+                else
+                    entityPos = entity.AbsolutePosition;
+
+                return Vector3.DistanceSquared(presencePos, entityPos);
+            }
+
+            return double.NaN;
+        }
+
+        private double GetPriorityByFrontBack(IClientAPI client, ISceneEntity entity)
+        {
+            ScenePresence presence = m_scene.GetScenePresence(client.AgentId);
+            if (presence != null)
+            {
+                // If this is an update for our own avatar give it the highest priority
+                if (presence == entity)
+                    return 0.0;
+
+                // Use group position for child prims
+                Vector3 entityPos = entity.AbsolutePosition;
+                if (entity is SceneObjectPart)
+                    entityPos = m_scene.GetGroupByPrim(entity.LocalId).AbsolutePosition;
+                else
+                    entityPos = entity.AbsolutePosition;
+
+                if (!presence.IsChildAgent)
+                {
+                    // Root agent. Use distance from camera and a priority decrease for objects behind us
+                    Vector3 camPosition = presence.CameraPosition;
+                    Vector3 camAtAxis = presence.CameraAtAxis;
+
+                    // Distance
+                    double priority = Vector3.DistanceSquared(camPosition, entityPos);
+
+                    // Plane equation
+                    float d = -Vector3.Dot(camPosition, camAtAxis);
+                    float p = Vector3.Dot(camAtAxis, entityPos) + d;
+                    if (p < 0.0f) priority *= 2.0;
+
+                    return priority;
+                }
+                else
+                {
+                    // Child agent. Use the normal distance method
+                    Vector3 presencePos = presence.AbsolutePosition;
+
+                    return Vector3.DistanceSquared(presencePos, entityPos);
+                }
+            }
+
+            return double.NaN;
+        }
+    }
+}
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index de8ecc2..f35dffc 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -58,13 +58,6 @@ namespace OpenSim.Region.Framework.Scenes
 
     public partial class Scene : SceneBase
     {
-        public enum UpdatePrioritizationSchemes {
-            Time = 0,
-            Distance = 1,
-            SimpleAngularDistance = 2,
-            FrontBack = 3,
-        }
-
         public delegate void SynchronizeSceneHandler(Scene scene);
         public SynchronizeSceneHandler SynchronizeScene = null;
 
@@ -388,12 +381,6 @@ namespace OpenSim.Region.Framework.Scenes
         private int m_lastUpdate;
         private bool m_firstHeartbeat = true;
 
-        private UpdatePrioritizationSchemes m_update_prioritization_scheme = UpdatePrioritizationSchemes.Time;
-        private bool m_reprioritization_enabled = true;
-        private double m_reprioritization_interval = 5000.0;
-        private double m_root_reprioritization_distance = 10.0;
-        private double m_child_reprioritization_distance = 20.0;
-
         private object m_deleting_scene_object = new object();
 
         // the minimum time that must elapse before a changed object will be considered for persisted
@@ -401,15 +388,21 @@ namespace OpenSim.Region.Framework.Scenes
         // the maximum time that must elapse before a changed object will be considered for persisted
         public long m_persistAfter = DEFAULT_MAX_TIME_FOR_PERSISTENCE * 10000000L;
 
+        private UpdatePrioritizationSchemes m_priorityScheme = UpdatePrioritizationSchemes.Time;
+        private bool m_reprioritizationEnabled = true;
+        private double m_reprioritizationInterval = 5000.0;
+        private double m_rootReprioritizationDistance = 10.0;
+        private double m_childReprioritizationDistance = 20.0;
+
         #endregion
 
         #region Properties
 
-        public UpdatePrioritizationSchemes UpdatePrioritizationScheme { get { return this.m_update_prioritization_scheme; } }
-        public bool IsReprioritizationEnabled { get { return m_reprioritization_enabled; } }
-        public double ReprioritizationInterval { get { return m_reprioritization_interval; } }
-        public double RootReprioritizationDistance { get { return m_root_reprioritization_distance; } }
-        public double ChildReprioritizationDistance { get { return m_child_reprioritization_distance; } }
+        public UpdatePrioritizationSchemes UpdatePrioritizationScheme { get { return m_priorityScheme; } }
+        public bool IsReprioritizationEnabled { get { return m_reprioritizationEnabled; } }
+        public double ReprioritizationInterval { get { return m_reprioritizationInterval; } }
+        public double RootReprioritizationDistance { get { return m_rootReprioritizationDistance; } }
+        public double ChildReprioritizationDistance { get { return m_childReprioritizationDistance; } }
 
         public AgentCircuitManager AuthenticateHandler
         {
@@ -611,6 +604,8 @@ namespace OpenSim.Region.Framework.Scenes
             m_asyncSceneObjectDeleter = new AsyncSceneObjectGroupDeleter(this);
             m_asyncSceneObjectDeleter.Enabled = true;
 
+            #region Region Settings
+
             // Load region settings
             m_regInfo.RegionSettings = m_storageManager.DataStore.LoadRegionSettings(m_regInfo.RegionID);
             if (m_storageManager.EstateDataStore != null)
@@ -657,6 +652,8 @@ namespace OpenSim.Region.Framework.Scenes
                 }
             }
 
+            #endregion Region Settings
+
             MainConsole.Instance.Commands.AddCommand("region", false, "reload estate",
                                           "reload estate",
                                           "Reload the estate data", HandleReloadEstate);
@@ -701,6 +698,8 @@ namespace OpenSim.Region.Framework.Scenes
 
             m_simulatorVersion = simulatorVersion + " (" + Util.GetRuntimeInformation() + ")";
 
+            #region Region Config
+
             try
             {
                 // Region config overrides global config
@@ -754,38 +753,6 @@ namespace OpenSim.Region.Framework.Scenes
 
                 m_strictAccessControl = startupConfig.GetBoolean("StrictAccessControl", m_strictAccessControl);
 
-                IConfig interest_management_config = m_config.Configs["InterestManagement"];
-                if (interest_management_config != null)
-                {
-                    string update_prioritization_scheme = interest_management_config.GetString("UpdatePrioritizationScheme", "Time").Trim().ToLower();
-                    switch (update_prioritization_scheme)
-                    {
-                        case "time":
-                            m_update_prioritization_scheme = UpdatePrioritizationSchemes.Time;
-                            break;
-                        case "distance":
-                            m_update_prioritization_scheme = UpdatePrioritizationSchemes.Distance;
-                            break;
-                        case "simpleangulardistance":
-                            m_update_prioritization_scheme = UpdatePrioritizationSchemes.SimpleAngularDistance;
-                            break;
-                        case "frontback":
-                            m_update_prioritization_scheme = UpdatePrioritizationSchemes.FrontBack;
-                            break;
-                        default:
-                            m_log.Warn("[SCENE]: UpdatePrioritizationScheme was not recognized, setting to default settomg of Time");
-                            m_update_prioritization_scheme = UpdatePrioritizationSchemes.Time;
-                            break;
-                    }
-
-                    m_reprioritization_enabled = interest_management_config.GetBoolean("ReprioritizationEnabled", true);
-                    m_reprioritization_interval = interest_management_config.GetDouble("ReprioritizationInterval", 5000.0);
-                    m_root_reprioritization_distance = interest_management_config.GetDouble("RootReprioritizationDistance", 10.0);
-                    m_child_reprioritization_distance = interest_management_config.GetDouble("ChildReprioritizationDistance", 20.0);
-                }
-
-                m_log.Info("[SCENE]: Using the " + m_update_prioritization_scheme + " prioritization scheme");
-
                 #region BinaryStats
 
                 try
@@ -822,6 +789,35 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 m_log.Warn("[SCENE]: Failed to load StartupConfig");
             }
+
+            #endregion Region Config
+
+            #region Interest Management
+
+            IConfig interestConfig = m_config.Configs["InterestManagement"];
+            if (interestConfig != null)
+            {
+                string update_prioritization_scheme = interestConfig.GetString("UpdatePrioritizationScheme", "Time").Trim().ToLower();
+
+                try
+                {
+                    m_priorityScheme = (UpdatePrioritizationSchemes)Enum.Parse(typeof(UpdatePrioritizationSchemes), update_prioritization_scheme, true);
+                }
+                catch (Exception)
+                {
+                    m_log.Warn("[PRIORITIZER]: UpdatePrioritizationScheme was not recognized, setting to default prioritizer Time");
+                    m_priorityScheme = UpdatePrioritizationSchemes.Time;
+                }
+
+                m_reprioritizationEnabled = interestConfig.GetBoolean("ReprioritizationEnabled", true);
+                m_reprioritizationInterval = interestConfig.GetDouble("ReprioritizationInterval", 5000.0);
+                m_rootReprioritizationDistance = interestConfig.GetDouble("RootReprioritizationDistance", 10.0);
+                m_childReprioritizationDistance = interestConfig.GetDouble("ChildReprioritizationDistance", 20.0);
+            }
+
+            m_log.Info("[SCENE]: Using the " + m_priorityScheme + " prioritization scheme");
+
+            #endregion Interest Management
         }
 
         /// <summary>
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 8aefd50..4453beb 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -3602,106 +3602,7 @@ namespace OpenSim.Region.Framework.Scenes
 
             SetFromItemID(uuid);
         }
-        #endregion 
 
-        public double GetUpdatePriority(IClientAPI client)
-        {
-            switch (Scene.UpdatePrioritizationScheme)
-            {
-                case Scene.UpdatePrioritizationSchemes.Time:
-                    return GetPriorityByTime();
-                case Scene.UpdatePrioritizationSchemes.Distance:
-                    return GetPriorityByDistance(client);
-                case Scene.UpdatePrioritizationSchemes.SimpleAngularDistance:
-                    return GetPriorityBySimpleAngularDistance(client);
-                case Scenes.Scene.UpdatePrioritizationSchemes.FrontBack:
-                    return GetPriorityByFrontBack(client);
-                default:
-                    throw new InvalidOperationException("UpdatePrioritizationScheme not defined");
-            }
-        }
-
-        private double GetPriorityByTime()
-        {
-            return DateTime.Now.ToOADate();
-        }
-
-        private double GetPriorityByDistance(IClientAPI client)
-        {
-            ScenePresence presence = Scene.GetScenePresence(client.AgentId);
-            if (presence != null)
-            {
-                return GetPriorityByDistance((presence.IsChildAgent) ?
-                    presence.AbsolutePosition : presence.CameraPosition);
-            }
-            return double.NaN;
-        }
-
-        private double GetPriorityBySimpleAngularDistance(IClientAPI client)
-        {
-            ScenePresence presence = Scene.GetScenePresence(client.AgentId);
-            if (presence != null)
-            {
-                return GetPriorityBySimpleAngularDistance((presence.IsChildAgent) ?
-                    presence.AbsolutePosition : presence.CameraPosition);
-            }
-            return double.NaN;
-        }
-
-        private double GetPriorityByFrontBack(IClientAPI client)
-        {
-            ScenePresence presence = Scene.GetScenePresence(client.AgentId);
-            if (presence != null)
-            {
-                return GetPriorityByFrontBack(presence.CameraPosition, presence.CameraAtAxis);
-            }
-            return double.NaN;
-        }
-
-        public double GetPriorityByDistance(Vector3 position)
-        {
-            return Vector3.Distance(AbsolutePosition, position);
-        }
-
-        public double GetPriorityBySimpleAngularDistance(Vector3 position)
-        {
-            double distance = Vector3.Distance(position, AbsolutePosition);
-            if (distance >= double.Epsilon)
-            {
-                float height;
-                Vector3 box = GetAxisAlignedBoundingBox(out height);
-
-                double angle = box.X / distance;
-                double max = angle;
-
-                angle = box.Y / distance;
-                if (max < angle)
-                    max = angle;
-
-                angle = box.Z / distance;
-                if (max < angle)
-                    max = angle;
-
-                return -max;
-            }
-            else
-                return double.MinValue;
-        }
-
-        public double GetPriorityByFrontBack(Vector3 camPosition, Vector3 camAtAxis)
-        {
-            // Distance
-            double priority = Vector3.Distance(camPosition, AbsolutePosition);
-
-            // Scale
-            //priority -= GroupScale().Length();
-
-            // Plane equation
-            float d = -Vector3.Dot(camPosition, camAtAxis);
-            float p = Vector3.Dot(camAtAxis, AbsolutePosition) + d;
-            if (p < 0.0f) priority *= 2.0f;
-
-            return priority;
-        }
+        #endregion
     }
 }
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index ee0eb07..2ce1b68 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -3777,123 +3777,9 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        public double GetUpdatePriority(IClientAPI client)
-        {
-            switch (Scene.UpdatePrioritizationScheme)
-            {
-                case Scene.UpdatePrioritizationSchemes.Time:
-                    return GetPriorityByTime();
-                case Scene.UpdatePrioritizationSchemes.Distance:
-                    return GetPriorityByDistance(client);
-                case Scene.UpdatePrioritizationSchemes.SimpleAngularDistance:
-                    return GetPriorityByDistance(client);
-                case Scenes.Scene.UpdatePrioritizationSchemes.FrontBack:
-                    return GetPriorityByFrontBack(client);
-                default:
-                    throw new InvalidOperationException("UpdatePrioritizationScheme not defined.");
-            }
-        }
-
-        private double GetPriorityByTime()
-        {
-            return DateTime.Now.ToOADate();
-        }
-
-        private double GetPriorityByDistance(IClientAPI client)
-        {
-            ScenePresence presence = Scene.GetScenePresence(client.AgentId);
-            if (presence != null)
-            {
-                return GetPriorityByDistance((presence.IsChildAgent) ?
-                    presence.AbsolutePosition : presence.CameraPosition);
-            }
-            return double.NaN;
-        }
-
-        private double GetPriorityByFrontBack(IClientAPI client)
-        {
-            ScenePresence presence = Scene.GetScenePresence(client.AgentId);
-            if (presence != null)
-            {
-                return GetPriorityByFrontBack(presence.CameraPosition, presence.CameraAtAxis);
-            }
-            return double.NaN;
-        }
-
-        private double GetPriorityByDistance(Vector3 position)
-        {
-            return Vector3.Distance(AbsolutePosition, position);
-        }
-
-        private double GetPriorityByFrontBack(Vector3 camPosition, Vector3 camAtAxis)
-        {
-            // Distance
-            double priority = Vector3.Distance(camPosition, AbsolutePosition);
-
-            // Plane equation
-            float d = -Vector3.Dot(camPosition, camAtAxis);
-            float p = Vector3.Dot(camAtAxis, AbsolutePosition) + d;
-            if (p < 0.0f) priority *= 2.0f;
-
-            return priority;
-        }
-
-        private double GetSOGUpdatePriority(SceneObjectGroup sog)
-        {
-            switch (Scene.UpdatePrioritizationScheme)
-            {
-                case Scene.UpdatePrioritizationSchemes.Time:
-                    throw new InvalidOperationException("UpdatePrioritizationScheme for time not supported for reprioritization");
-                case Scene.UpdatePrioritizationSchemes.Distance:
-                    return sog.GetPriorityByDistance((IsChildAgent) ? AbsolutePosition : CameraPosition);
-                case Scene.UpdatePrioritizationSchemes.SimpleAngularDistance:
-                    return sog.GetPriorityBySimpleAngularDistance((IsChildAgent) ? AbsolutePosition : CameraPosition);
-                case Scenes.Scene.UpdatePrioritizationSchemes.FrontBack:
-                    return sog.GetPriorityByFrontBack(CameraPosition, CameraAtAxis);
-                default:
-                    throw new InvalidOperationException("UpdatePrioritizationScheme not defined");
-            }
-        }
-
-        private double UpdatePriority(UpdatePriorityData data)
-        {
-            EntityBase entity;
-            SceneObjectGroup group;
-
-            if (Scene.Entities.TryGetValue(data.localID, out entity))
-            {
-                group = entity as SceneObjectGroup;
-                if (group != null)
-                    return GetSOGUpdatePriority(group);
-
-                ScenePresence presence = entity as ScenePresence;
-                if (presence == null)
-                    throw new InvalidOperationException("entity found is neither SceneObjectGroup nor ScenePresence");
-                switch (Scene.UpdatePrioritizationScheme)
-                {
-                    case Scene.UpdatePrioritizationSchemes.Time:
-                        throw new InvalidOperationException("UpdatePrioritization for time not supported for reprioritization");
-                    case Scene.UpdatePrioritizationSchemes.Distance:
-                    case Scene.UpdatePrioritizationSchemes.SimpleAngularDistance:
-                        return GetPriorityByDistance((IsChildAgent) ? AbsolutePosition : CameraPosition);
-                    case Scenes.Scene.UpdatePrioritizationSchemes.FrontBack:
-                        return GetPriorityByFrontBack(CameraPosition, CameraAtAxis);
-                    default:
-                        throw new InvalidOperationException("UpdatePrioritizationScheme not defined");
-                }
-            }
-            else
-            {
-                group = Scene.GetGroupByPrim(data.localID);
-                if (group != null)
-                    return GetSOGUpdatePriority(group);
-            }
-            return double.NaN;
-        }
-
         private void ReprioritizeUpdates()
         {
-            if (Scene.IsReprioritizationEnabled && Scene.UpdatePrioritizationScheme != Scene.UpdatePrioritizationSchemes.Time)
+            if (Scene.IsReprioritizationEnabled && Scene.UpdatePrioritizationScheme != UpdatePrioritizationSchemes.Time)
             {
                 lock (m_reprioritization_timer)
                 {
@@ -3907,7 +3793,7 @@ namespace OpenSim.Region.Framework.Scenes
 
         private void Reprioritize(object sender, ElapsedEventArgs e)
         {
-            m_controllingClient.ReprioritizeUpdates(UpdatePriority);
+            m_controllingClient.ReprioritizeUpdates();
 
             lock (m_reprioritization_timer)
             {
diff --git a/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs b/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs
index 84faac0..27de529 100644
--- a/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs
+++ b/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs
@@ -1065,7 +1065,7 @@ namespace OpenSim.Region.OptionalModules.Agent.InternetRelayClientView.Server
 
         }
 
-        public void ReprioritizeUpdates(UpdatePriorityHandler handler)
+        public void ReprioritizeUpdates()
         {
 
         }
diff --git a/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs b/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs
index 9066691..d2279c7 100644
--- a/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs
+++ b/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs
@@ -638,7 +638,7 @@ namespace OpenSim.Region.OptionalModules.World.NPC
         {
         }
 
-        public void ReprioritizeUpdates(UpdatePriorityHandler handler)
+        public void ReprioritizeUpdates()
         {
         }
 
diff --git a/OpenSim/Tests/Common/Mock/TestClient.cs b/OpenSim/Tests/Common/Mock/TestClient.cs
index edb7642..6b0efe9 100644
--- a/OpenSim/Tests/Common/Mock/TestClient.cs
+++ b/OpenSim/Tests/Common/Mock/TestClient.cs
@@ -641,7 +641,7 @@ namespace OpenSim.Tests.Common.Mock
         {
         }
 
-        public void ReprioritizeUpdates(UpdatePriorityHandler handler)
+        public void ReprioritizeUpdates()
         {
         }