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, 32 insertions, 0 deletions

diff --git a/OpenSim/Region/Framework/Scenes/EventManager.cs b/OpenSim/Region/Framework/Scenes/EventManager.cs
index 8621f70..7496af0 100644
--- a/OpenSim/Region/Framework/Scenes/EventManager.cs
+++ b/OpenSim/Region/Framework/Scenes/EventManager.cs
@@ -132,6 +132,14 @@ namespace OpenSim.Region.Framework.Scenes
 
         public event SceneGroupGrabed OnSceneGroupGrab;
 
+        public delegate bool SceneGroupSpinStarted(UUID groupID);
+
+        public event SceneGroupSpinStarted OnSceneGroupSpinStart;
+
+        public delegate bool SceneGroupSpun(UUID groupID, Quaternion rotation);
+
+        public event SceneGroupSpun OnSceneGroupSpin;
+
         public delegate void LandObjectAdded(ILandObject newParcel);
 
         public event LandObjectAdded OnLandObjectAdded;
@@ -381,6 +389,8 @@ namespace OpenSim.Region.Framework.Scenes
         private StopScript handlerStopScript = null; //OnStopScript;
         private SceneGroupMoved handlerSceneGroupMove = null; //OnSceneGroupMove;
         private SceneGroupGrabed handlerSceneGroupGrab = null; //OnSceneGroupGrab;
+        private SceneGroupSpinStarted handlerSceneGroupSpinStarted = null; //OnSceneGroupSpinStart;
+        private SceneGroupSpun handlerSceneGroupSpin = null; //OnSceneGroupSpin;
         private LandObjectAdded handlerLandObjectAdded = null; //OnLandObjectAdded;
         private LandObjectRemoved handlerLandObjectRemoved = null; //OnLandObjectRemoved;
         private AvatarEnteringNewParcel handlerAvatarEnteringNewParcel = null; //OnAvatarEnteringNewParcel;
@@ -636,6 +646,28 @@ namespace OpenSim.Region.Framework.Scenes
             return true;
         }
 
+        public bool TriggerGroupSpinStart(UUID groupID)
+        {
+            handlerSceneGroupSpinStarted = OnSceneGroupSpinStart;
+
+            if (handlerSceneGroupSpinStarted != null)
+            {
+                return handlerSceneGroupSpinStarted(groupID);
+            }
+            return true;
+        }
+
+        public bool TriggerGroupSpin(UUID groupID, Quaternion rotation)
+        {
+            handlerSceneGroupSpin = OnSceneGroupSpin;
+
+            if (handlerSceneGroupSpin != null)
+            {
+                return handlerSceneGroupSpin(groupID, rotation);
+            }
+            return true;
+        }
+
         public void TriggerGroupGrab(UUID groupID, Vector3 offset, UUID userID)
         {
             handlerSceneGroupGrab = OnSceneGroupGrab;