7 files changed, 507 insertions, 43 deletions

diff --git a/OpenSim/Capabilities/Handlers/FetchInventory2/FetchInventory2Handler.cs b/OpenSim/Capabilities/Handlers/FetchInventory2/FetchInventory2Handler.cs
new file mode 100644
index 0000000..717a097
--- /dev/null
+++ b/OpenSim/Capabilities/Handlers/FetchInventory2/FetchInventory2Handler.cs
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Reflection;
+using log4net;
+using Nini.Config;
+using OpenMetaverse;
+using OpenMetaverse.StructuredData;
+using OpenSim.Framework;
+using OpenSim.Framework.Capabilities;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Framework.Servers.HttpServer;
+using OpenSim.Services.Interfaces;
+using Caps = OpenSim.Framework.Capabilities.Caps;
+using OSDArray = OpenMetaverse.StructuredData.OSDArray;
+using OSDMap = OpenMetaverse.StructuredData.OSDMap;
+
+namespace OpenSim.Capabilities.Handlers
+{
+    public class FetchInventory2Handler
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        private IInventoryService m_inventoryService;
+
+        public FetchInventory2Handler(IInventoryService invService)
+        {
+            m_inventoryService = invService;
+        }
+
+        public string FetchInventoryRequest(string request, string path, string param, IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
+        {
+//            m_log.DebugFormat("[FETCH INVENTORY HANDLER]: Received FetchInventory capabilty request");
+
+            OSDMap requestmap = (OSDMap)OSDParser.DeserializeLLSDXml(Utils.StringToBytes(request));
+            OSDArray itemsRequested = (OSDArray)requestmap["items"];
+
+            string reply;
+            LLSDFetchInventory llsdReply = new LLSDFetchInventory();
+
+            foreach (OSDMap osdItemId in itemsRequested)
+            {
+                UUID itemId = osdItemId["item_id"].AsUUID();
+
+                InventoryItemBase item = m_inventoryService.GetItem(new InventoryItemBase(itemId));
+
+                if (item != null)
+                {
+                    // We don't know the agent that this request belongs to so we'll use the agent id of the item
+                    // which will be the same for all items.
+                    llsdReply.agent_id = item.Owner;
+
+                    llsdReply.items.Array.Add(ConvertInventoryItem(item));
+                }
+            }
+
+            reply = LLSDHelpers.SerialiseLLSDReply(llsdReply);
+
+            return reply;
+        }
+
+        /// <summary>
+        /// Convert an internal inventory item object into an LLSD object.
+        /// </summary>
+        /// <param name="invItem"></param>
+        /// <returns></returns>
+        private LLSDInventoryItem ConvertInventoryItem(InventoryItemBase invItem)
+        {
+            LLSDInventoryItem llsdItem = new LLSDInventoryItem();
+            llsdItem.asset_id = invItem.AssetID;
+            llsdItem.created_at = invItem.CreationDate;
+            llsdItem.desc = invItem.Description;
+            llsdItem.flags = (int)invItem.Flags;
+            llsdItem.item_id = invItem.ID;
+            llsdItem.name = invItem.Name;
+            llsdItem.parent_id = invItem.Folder;
+
+            try
+            {
+                llsdItem.type = Utils.AssetTypeToString((AssetType)invItem.AssetType);
+                llsdItem.inv_type = Utils.InventoryTypeToString((InventoryType)invItem.InvType);
+            }
+            catch (Exception e)
+            {
+                m_log.ErrorFormat(
+                    "[WEB FETCH INV DESC HANDLER]: Problem setting asset {0} inventory {1} types while converting inventory item {2}: {3}",
+                    invItem.AssetType, invItem.InvType, invItem.Name, e.Message);
+            }
+
+            llsdItem.permissions = new LLSDPermissions();
+            llsdItem.permissions.creator_id = invItem.CreatorIdAsUuid;
+            llsdItem.permissions.base_mask = (int)invItem.CurrentPermissions;
+            llsdItem.permissions.everyone_mask = (int)invItem.EveryOnePermissions;
+            llsdItem.permissions.group_id = invItem.GroupID;
+            llsdItem.permissions.group_mask = (int)invItem.GroupPermissions;
+            llsdItem.permissions.is_owner_group = invItem.GroupOwned;
+            llsdItem.permissions.next_owner_mask = (int)invItem.NextPermissions;
+            llsdItem.permissions.owner_id = invItem.Owner;
+            llsdItem.permissions.owner_mask = (int)invItem.CurrentPermissions;
+            llsdItem.sale_info = new LLSDSaleInfo();
+            llsdItem.sale_info.sale_price = invItem.SalePrice;
+            switch (invItem.SaleType)
+            {
+                default:
+                    llsdItem.sale_info.sale_type = "not";
+                    break;
+                case 1:
+                    llsdItem.sale_info.sale_type = "original";
+                    break;
+                case 2:
+                    llsdItem.sale_info.sale_type = "copy";
+                    break;
+                case 3:
+                    llsdItem.sale_info.sale_type = "contents";
+                    break;
+            }
+
+            return llsdItem;
+        }
+    }
+}
diff --git a/OpenSim/Capabilities/Handlers/FetchInventory2/FetchInventory2ServerConnector.cs b/OpenSim/Capabilities/Handlers/FetchInventory2/FetchInventory2ServerConnector.cs
new file mode 100644
index 0000000..0ba8931
--- /dev/null
+++ b/OpenSim/Capabilities/Handlers/FetchInventory2/FetchInventory2ServerConnector.cs
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using Nini.Config;
+using OpenSim.Server.Base;
+using OpenSim.Services.Interfaces;
+using OpenSim.Framework.Servers.HttpServer;
+using OpenSim.Server.Handlers.Base;
+using OpenMetaverse;
+
+namespace OpenSim.Capabilities.Handlers
+{
+    public class FetchInventory2ServerConnector : ServiceConnector
+    {
+        private IInventoryService m_InventoryService;
+        private string m_ConfigName = "CapsService";
+
+        public FetchInventory2ServerConnector(IConfigSource config, IHttpServer server, string configName)
+            : base(config, server, configName)
+        {
+            if (configName != String.Empty)
+                m_ConfigName = configName;
+
+            IConfig serverConfig = config.Configs[m_ConfigName];
+            if (serverConfig == null)
+                throw new Exception(String.Format("No section '{0}' in config file", m_ConfigName));
+
+            string invService = serverConfig.GetString("InventoryService", String.Empty);
+
+            if (invService == String.Empty)
+                throw new Exception("No InventoryService in config file");
+
+            Object[] args = new Object[] { config };
+            m_InventoryService = ServerUtils.LoadPlugin<IInventoryService>(invService, args);
+
+            if (m_InventoryService == null)
+                throw new Exception(String.Format("Failed to load InventoryService from {0}; config is {1}", invService, m_ConfigName));
+
+            FetchInventory2Handler fiHandler = new FetchInventory2Handler(m_InventoryService);
+            IRequestHandler reqHandler
+                = new RestStreamHandler("POST", "/CAPS/FetchInventory/", fiHandler.FetchInventoryRequest);
+            server.AddStreamHandler(reqHandler);
+        }
+    }
+}
diff --git a/OpenSim/Capabilities/Handlers/WebFetchInventoryDescendents/WebFetchInvDescHandler.cs b/OpenSim/Capabilities/Handlers/WebFetchInventoryDescendents/WebFetchInvDescHandler.cs
index 3ce4e66..8b44f72 100644
--- a/OpenSim/Capabilities/Handlers/WebFetchInventoryDescendents/WebFetchInvDescHandler.cs
+++ b/OpenSim/Capabilities/Handlers/WebFetchInventoryDescendents/WebFetchInvDescHandler.cs
@@ -245,7 +245,7 @@ namespace OpenSim.Capabilities.Handlers
 //                        containingFolder.Name, containingFolder.ID, agentID);
 
                     version = containingFolder.Version;
-//
+
 //                    if (fetchItems)
 //                    {
 //                        List<InventoryItemBase> linkedItemsToAdd = new List<InventoryItemBase>();
diff --git a/OpenSim/Capabilities/LLSDInventoryItem.cs b/OpenSim/Capabilities/LLSDInventoryItem.cs
index cce18d7..426a6cb 100644
--- a/OpenSim/Capabilities/LLSDInventoryItem.cs
+++ b/OpenSim/Capabilities/LLSDInventoryItem.cs
@@ -95,4 +95,11 @@ namespace OpenSim.Framework.Capabilities
         public UUID owner_id; 
         public int version;
     }
-}
+
+    [OSDMap]
+    public class LLSDFetchInventory
+    {
+        public UUID agent_id;
+        public OSDArray items = new OSDArray();
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Region/ClientStack/Linden/Caps/FetchInventory2Module.cs b/OpenSim/Region/ClientStack/Linden/Caps/FetchInventory2Module.cs
new file mode 100644
index 0000000..14501c7
--- /dev/null
+++ b/OpenSim/Region/ClientStack/Linden/Caps/FetchInventory2Module.cs
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections;
+using System.Reflection;
+using log4net;
+using Nini.Config;
+using Mono.Addins;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Framework.Servers.HttpServer;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Services.Interfaces;
+using Caps = OpenSim.Framework.Capabilities.Caps;
+using OpenSim.Capabilities.Handlers;
+
+namespace OpenSim.Region.ClientStack.Linden
+{
+    /// <summary>
+    /// This module implements both WebFetchInventoryDescendents and FetchInventoryDescendents2 capabilities.
+    /// </summary>
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule")]
+    public class FetchInventory2Module : INonSharedRegionModule
+    {
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        public bool Enabled { get; private set; }
+
+        private Scene m_scene;
+
+        private IInventoryService m_inventoryService;
+
+        private string m_fetchInventory2Url;
+
+        private FetchInventory2Handler m_fetchHandler;
+
+        #region ISharedRegionModule Members
+
+        public void Initialise(IConfigSource source)
+        {
+            IConfig config = source.Configs["ClientStack.LindenCaps"];
+            if (config == null)
+                return;
+
+            m_fetchInventory2Url = config.GetString("Cap_FetchInventory2", string.Empty);
+
+            if (m_fetchInventory2Url != string.Empty)
+                Enabled = true;
+        }
+
+        public void AddRegion(Scene s)
+        {
+            if (!Enabled)
+                return;
+
+            m_scene = s;
+        }
+
+        public void RemoveRegion(Scene s)
+        {
+            if (!Enabled)
+                return;
+
+            m_scene.EventManager.OnRegisterCaps -= RegisterCaps;
+            m_scene = null;
+        }
+
+        public void RegionLoaded(Scene s)
+        {
+            if (!Enabled)
+                return;
+
+            m_inventoryService = m_scene.InventoryService;
+
+            // We'll reuse the same handler for all requests.
+            if (m_fetchInventory2Url == "localhost")
+                m_fetchHandler = new FetchInventory2Handler(m_inventoryService);
+
+            m_scene.EventManager.OnRegisterCaps += RegisterCaps;
+        }
+
+        public void PostInitialise() {}
+
+        public void Close() {}
+
+        public string Name { get { return "FetchInventory2Module"; } }
+
+        public Type ReplaceableInterface
+        {
+            get { return null; }
+        }
+
+        #endregion
+
+        private void RegisterCaps(UUID agentID, Caps caps)
+        {
+            RegisterFetchCap(agentID, caps, "FetchInventory2", m_fetchInventory2Url);
+        }
+
+        private void RegisterFetchCap(UUID agentID, Caps caps, string capName, string url)
+        {
+            string capUrl;
+
+            if (url == "localhost")
+            {
+                capUrl = "/CAPS/" + UUID.Random();
+
+                IRequestHandler reqHandler
+                    = new RestStreamHandler("POST", capUrl, m_fetchHandler.FetchInventoryRequest);
+
+                caps.RegisterHandler(capName, reqHandler);
+            }
+            else
+            {
+                capUrl = url;
+
+                caps.RegisterHandler(capName, capUrl);
+            }
+
+//            m_log.DebugFormat(
+//                "[FETCH INVENTORY2 MODULE]: Registered capability {0} at {1} in region {2} for {3}",
+//                capName, capUrl, m_scene.RegionInfo.RegionName, agentID);
+        }
+    }
+}
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 3bc8750..466e540 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -5096,15 +5096,19 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             return (double)Math.Asin(val);
         }
 
-        // Xantor 30/apr/2008
+        // jcochran 5/jan/2012
         public LSL_Float llAngleBetween(LSL_Rotation a, LSL_Rotation b)
         {
             m_host.AddScriptLPS(1);
 
-            double angle = Math.Acos(a.x * b.x + a.y * b.y + a.z * b.z + a.s * b.s) * 2;
-            if (angle < 0) angle = -angle;
-            if (angle > Math.PI) return (Math.PI * 2 - angle);
-            return angle;
+            double aa = (a.x * a.x + a.y * a.y + a.z * a.z + a.s * a.s);
+            double bb = (b.x * b.x + b.y * b.y + b.z * b.z + b.s * b.s);
+            double aa_bb = aa * bb;
+            if (aa_bb == 0) return 0.0;
+            double ab = (a.x * b.x + a.y * b.y + a.z * b.z + a.s * b.s);
+            double quotient = (ab * ab) / aa_bb;
+            if (quotient >= 1.0) return 0.0;
+            return Math.Acos(2 * quotient - 1);
         }
 
         public LSL_String llGetInventoryKey(string name)
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs
index 0cbad41..3baa723 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs
@@ -75,32 +75,49 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
         [Test]
         public void TestllAngleBetween()
         {
-            CheckllAngleBetween(new Vector3(1, 0, 0), 0);
-            CheckllAngleBetween(new Vector3(1, 0, 0), 90);
-            CheckllAngleBetween(new Vector3(1, 0, 0), 180);
-
-            CheckllAngleBetween(new Vector3(0, 1, 0), 0);
-            CheckllAngleBetween(new Vector3(0, 1, 0), 90);
-            CheckllAngleBetween(new Vector3(0, 1, 0), 180);
-
-            CheckllAngleBetween(new Vector3(0, 0, 1), 0);
-            CheckllAngleBetween(new Vector3(0, 0, 1), 90);
-            CheckllAngleBetween(new Vector3(0, 0, 1), 180);
-
-            CheckllAngleBetween(new Vector3(1, 1, 1), 0);
-            CheckllAngleBetween(new Vector3(1, 1, 1), 90);
-            CheckllAngleBetween(new Vector3(1, 1, 1), 180);
+            CheckllAngleBetween(new Vector3(1, 0, 0), 0,   1, 1);
+            CheckllAngleBetween(new Vector3(1, 0, 0), 90,  1, 1);
+            CheckllAngleBetween(new Vector3(1, 0, 0), 180, 1, 1);
+
+            CheckllAngleBetween(new Vector3(0, 1, 0), 0,   1, 1);
+            CheckllAngleBetween(new Vector3(0, 1, 0), 90,  1, 1);
+            CheckllAngleBetween(new Vector3(0, 1, 0), 180, 1, 1);
+
+            CheckllAngleBetween(new Vector3(0, 0, 1), 0,   1, 1);
+            CheckllAngleBetween(new Vector3(0, 0, 1), 90,  1, 1);
+            CheckllAngleBetween(new Vector3(0, 0, 1), 180, 1, 1);
+
+            CheckllAngleBetween(new Vector3(1, 1, 1), 0,   1, 1);
+            CheckllAngleBetween(new Vector3(1, 1, 1), 90,  1, 1);
+            CheckllAngleBetween(new Vector3(1, 1, 1), 180, 1, 1);
+            
+            CheckllAngleBetween(new Vector3(1, 0, 0), 0,   1.6f, 1.8f);
+            CheckllAngleBetween(new Vector3(1, 0, 0), 90,  0.3f, 3.9f);
+            CheckllAngleBetween(new Vector3(1, 0, 0), 180, 8.8f, 7.4f);
+            
+            CheckllAngleBetween(new Vector3(0, 1, 0), 0,   9.8f, -9.4f);
+            CheckllAngleBetween(new Vector3(0, 1, 0), 90,  8.4f, -8.2f);
+            CheckllAngleBetween(new Vector3(0, 1, 0), 180, 0.4f, -5.8f);
+            
+            CheckllAngleBetween(new Vector3(0, 0, 1), 0,   -6.8f, 3.4f);
+            CheckllAngleBetween(new Vector3(0, 0, 1), 90,  -3.6f, 5.6f);
+            CheckllAngleBetween(new Vector3(0, 0, 1), 180, -3.8f, 1.1f);
+            
+            CheckllAngleBetween(new Vector3(1, 1, 1), 0,   -7.7f, -2.0f);
+            CheckllAngleBetween(new Vector3(1, 1, 1), 90,  -3.0f, -9.1f);
+            CheckllAngleBetween(new Vector3(1, 1, 1), 180, -7.9f, -8.0f);
         }
 
-        private void CheckllAngleBetween(Vector3 axis,float originalAngle)
+        private void CheckllAngleBetween(Vector3 axis,float originalAngle, float denorm1, float denorm2)
         {
             Quaternion rotation1 = Quaternion.CreateFromAxisAngle(axis, 0);
             Quaternion rotation2 = Quaternion.CreateFromAxisAngle(axis, ToRadians(originalAngle));
+            rotation1 *= denorm1;
+            rotation2 *= denorm2;
 
             double deducedAngle = FromLslFloat(m_lslApi.llAngleBetween(ToLslQuaternion(rotation2), ToLslQuaternion(rotation1)));
 
-            Assert.Greater(deducedAngle, ToRadians(originalAngle) - ANGLE_ACCURACY_IN_RADIANS);
-            Assert.Less(deducedAngle, ToRadians(originalAngle) + ANGLE_ACCURACY_IN_RADIANS);
+            Assert.That(deducedAngle, Is.EqualTo(ToRadians(originalAngle)).Within(ANGLE_ACCURACY_IN_RADIANS), "TestllAngleBetween check fail");
         }
 
         #region Conversions to and from LSL_Types
@@ -142,30 +159,97 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
         public void TestllRot2Euler()
         {
             // 180, 90 and zero degree rotations.
-            CheckllRot2Euler(new LSL_Types.Quaternion(1.0f, 0.0f, 0.0f, 0.0f), new LSL_Types.Vector3(Math.PI, 0.0f, 0.0f));
-            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, 1.0f, 0.0f, 0.0f), new LSL_Types.Vector3(Math.PI, 0.0f, Math.PI));
-            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, 0.0f, 1.0f, 0.0f), new LSL_Types.Vector3(0.0f, 0.0f, Math.PI));
-            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, 0.0f, 0.0f, 1.0f), new LSL_Types.Vector3(0.0f, 0.0f, 0.0f));
-            CheckllRot2Euler(new LSL_Types.Quaternion(-0.5f, -0.5f, 0.5f, 0.5f), new LSL_Types.Vector3(0, -Math.PI / 2.0f, Math.PI / 2.0f));
-            CheckllRot2Euler(new LSL_Types.Quaternion(-0.707107f, 0.0f, 0.0f, -0.707107f), new LSL_Types.Vector3(Math.PI / 2.0f, 0.0f, 0.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, 0.0f, 0.0f, 1.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, 0.0f, 0.707107f, 0.707107f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, 0.0f, 1.0f, 0.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, 0.0f, 0.707107f, -0.707107f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.707107f, 0.0f, 0.0f, 0.707107f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.5f, -0.5f, 0.5f, 0.5f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, -0.707107f, 0.707107f, 0.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.5f, -0.5f, 0.5f, -0.5f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(1.0f, 0.0f, 0.0f, 0.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.707107f, -0.707107f, 0.0f, 0.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, -1.0f, 0.0f, 0.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.707107f, -0.707107f, 0.0f, 0.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.707107f, 0.0f, 0.0f, -0.707107f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.5f, -0.5f, -0.5f, -0.5f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, -0.707107f, -0.707107f, 0.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.5f, -0.5f, -0.5f, 0.5f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, -0.707107f, 0.0f, 0.707107f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.5f, -0.5f, 0.5f, 0.5f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.707107f, 0.0f, 0.707107f, 0.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.5f, 0.5f, 0.5f, -0.5f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.0f, -0.707107f, 0.0f, -0.707107f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.5f, -0.5f, -0.5f, -0.5f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.707107f, 0.0f, -0.707107f, 0.0f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.5f, 0.5f, -0.5f, 0.5f));
+
             // A couple of messy rotations.
-            CheckllRot2Euler(new LSL_Types.Quaternion(1.0f, 5.651f, -3.1f, 67.023f), new LSL_Types.Vector3(0.037818f, 0.166447f, -0.095595f));
-            CheckllRot2Euler(new LSL_Types.Quaternion(0.719188f, -0.408934f, -0.363998f, -0.427841f), new LSL_Types.Vector3(-1.954769f, -0.174533f, 1.151917f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(1.0f, 5.651f, -3.1f, 67.023f));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.719188f, -0.408934f, -0.363998f, -0.427841f));
+
+            // Some deliberately malicious rotations (intended on provoking singularity errors)
+            // The "f" suffexes are deliberately omitted.
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.50001f, 0.50001f, 0.50001f, 0.50001f));
+            // More malice. The "f" suffixes are deliberately omitted.
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.701055, 0.092296, 0.701055, -0.092296));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.183005, -0.683010, 0.183005, 0.683010));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.430460, -0.560982, 0.430460, 0.560982));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.701066, 0.092301, -0.701066, 0.092301));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.183013, -0.683010, 0.183013, 0.683010));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.183005, -0.683014, -0.183005, -0.683014));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.353556, 0.612375, 0.353556, -0.612375));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.353554, -0.612385, -0.353554, 0.612385));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.560989, 0.430450, 0.560989, -0.430450));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.183013, 0.683009, -0.183013, 0.683009));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.430457, -0.560985, -0.430457, 0.560985));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.353552, 0.612360, -0.353552, -0.612360));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.499991, 0.500003, 0.499991, -0.500003));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.353555, -0.612385, -0.353555, -0.612385));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.701066, -0.092301, -0.701066, 0.092301));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.499991, 0.500007, 0.499991, -0.500007));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.683002, 0.183016, -0.683002, 0.183016));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.430458, 0.560982, 0.430458, 0.560982));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.499991, -0.500003, -0.499991, 0.500003));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.183009, 0.683011, -0.183009, 0.683011));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.560975, -0.430457, 0.560975, -0.430457));
+            CheckllRot2Euler(new LSL_Types.Quaternion(0.701055, 0.092300, 0.701055, 0.092300));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.560990, 0.430459, -0.560990, 0.430459));
+            CheckllRot2Euler(new LSL_Types.Quaternion(-0.092302, -0.701059, -0.092302, -0.701059));
         }
 
-        private void CheckllRot2Euler(LSL_Types.Quaternion rot, LSL_Types.Vector3 eulerCheck)
+        /// <summary>
+        /// Check an llRot2Euler conversion.
+        /// </summary>
+        /// <remarks>
+        /// Testing Rot2Euler this way instead of comparing against expected angles because
+        /// 1. There are several ways to get to the original Quaternion. For example a rotation
+        ///    of PI and -PI will give the same result. But PI and -PI aren't equal.
+        /// 2. This method checks to see if the calculated angles from a quaternion can be used
+        ///    to create a new quaternion to produce the same rotation.
+        /// However, can't compare the newly calculated quaternion against the original because
+        /// once again, there are multiple quaternions that give the same result. For instance
+        ///  <X, Y, Z, S> == <-X, -Y, -Z, -S>.  Additionally, the magnitude of S can be changed
+        /// and will still result in the same rotation if the values for X, Y, Z are also changed
+        /// to compensate.
+        /// However, if two quaternions represent the same rotation, then multiplying the first
+        /// quaternion by the conjugate of the second, will give a third quaternion representing
+        /// a zero rotation. This can be tested for by looking at the X, Y, Z values which should
+        /// be zero.
+        /// </remarks>
+        /// <param name="rot"></param>
+        private void CheckllRot2Euler(LSL_Types.Quaternion rot)
         {
             // Call LSL function to convert quaternion rotaion to euler radians.
             LSL_Types.Vector3 eulerCalc = m_lslApi.llRot2Euler(rot);
-            // Check upper and lower bounds of x, y and z.
-            // This type of check is performed as opposed to comparing for equal numbers, in order to allow slight
-            // differences in accuracy.
-            Assert.Greater(eulerCalc.x, eulerCheck.x - ANGLE_ACCURACY_IN_RADIANS, "TestllRot2Euler X lower bounds check fail");
-            Assert.Less(eulerCalc.x, eulerCheck.x + ANGLE_ACCURACY_IN_RADIANS, "TestllRot2Euler X upper bounds check fail");
-            Assert.Greater(eulerCalc.y, eulerCheck.y - ANGLE_ACCURACY_IN_RADIANS, "TestllRot2Euler Y lower bounds check fail");
-            Assert.Less(eulerCalc.y, eulerCheck.y + ANGLE_ACCURACY_IN_RADIANS, "TestllRot2Euler Y upper bounds check fail");
-            Assert.Greater(eulerCalc.z, eulerCheck.z - ANGLE_ACCURACY_IN_RADIANS, "TestllRot2Euler Z lower bounds check fail");
-            Assert.Less(eulerCalc.z, eulerCheck.z + ANGLE_ACCURACY_IN_RADIANS, "TestllRot2Euler Z upper bounds check fail");
+            // Now use the euler radians to recalculate a new quaternion rotation
+            LSL_Types.Quaternion newRot = m_lslApi.llEuler2Rot(eulerCalc);
+            // Multiple original quaternion by conjugate of quaternion calculated with angles.
+            LSL_Types.Quaternion check = rot * new LSL_Types.Quaternion(-newRot.x, -newRot.y, -newRot.z, newRot.s);
+            
+            Assert.AreEqual(0.0, check.x, VECTOR_COMPONENT_ACCURACY, "TestllRot2Euler X bounds check fail");
+            Assert.AreEqual(0.0, check.y, VECTOR_COMPONENT_ACCURACY, "TestllRot2Euler Y bounds check fail");
+            Assert.AreEqual(0.0, check.z, VECTOR_COMPONENT_ACCURACY, "TestllRot2Euler Z bounds check fail");
         }
 
         [Test]