Handle ObjectSpin* packets to spin physical prims on Ctrl+Shift+Drag

Addresses Mantis #3381

The current implementation works as expected if the object has no rotation or 
only rotation around the Z axis; you can spin the object left or right (around
the world Z axis).

It works a little unexpectedly if the object has a non-Z-axis rotation; in this
case the body is spun about its local Z axis, not the world Z-axis. (But SL 
also behaves oddly with a spin on an arbitrarily rotated object.)

1 files changed, 41 insertions, 0 deletions

diff --git a/OpenSim/Region/Framework/Scenes/SceneGraph.cs b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
index c2f9fd2..e6328dc 100644
--- a/OpenSim/Region/Framework/Scenes/SceneGraph.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
@@ -1342,6 +1342,47 @@ namespace OpenSim.Region.Framework.Scenes
         }
 
         /// <summary>
+        /// Start spinning the given object
+        /// </summary>
+        /// <param name="objectID"></param>
+        /// <param name="rotation"></param>
+        /// <param name="remoteClient"></param>
+        protected internal void SpinStart(UUID objectID, IClientAPI remoteClient)
+        {
+            SceneObjectGroup group = GetGroupByPrim(objectID);
+            if (group != null)
+            {
+                if (m_parentScene.Permissions.CanMoveObject(group.UUID, remoteClient.AgentId))// && PermissionsMngr.)
+                {
+                    group.SpinStart(remoteClient);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Spin the given object
+        /// </summary>
+        /// <param name="objectID"></param>
+        /// <param name="rotation"></param>
+        /// <param name="remoteClient"></param>
+        protected internal void SpinObject(UUID objectID, Quaternion rotation, IClientAPI remoteClient)
+        {
+            SceneObjectGroup group = GetGroupByPrim(objectID);
+            if (group != null)
+            {
+                if (m_parentScene.Permissions.CanMoveObject(group.UUID, remoteClient.AgentId))// && PermissionsMngr.)
+                {
+                    group.SpinMovement(rotation, remoteClient);
+                }
+                // This is outside the above permissions condition
+                // so that if the object is locked the client moving the object
+                // get's it's position on the simulator even if it was the same as before
+                // This keeps the moving user's client in sync with the rest of the world.
+                group.SendGroupTerseUpdate();
+            }
+        }
+
+        /// <summary>
         ///
         /// </summary>
         /// <param name="primLocalID"></param>