Fix undo for resizing linksets

This involves implementing a boolean in UndoState to signal whether the undo needs to be done for an entire group/linkset or just a single prim
Resizing individual components of linksets is still dodgy.
Resizing still has to be down twice, since for some reason the client is sending two multiobjectupdate packets on every resize except the very first.  This applies to single prims and linksets.  Need to look into this.

3 files changed, 60 insertions, 29 deletions

diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 7254992..3bbf76c 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -2624,6 +2624,8 @@ namespace OpenSim.Region.Framework.Scenes
 //            m_log.DebugFormat(
 //                "[SCENE OBJECT GROUP]: Group resizing {0} {1} from {2} to {3}", Name, LocalId, RootPart.Scale, scale);
 
+            RootPart.StoreUndoState(true);
+
             scale.X = Math.Min(scale.X, Scene.m_maxNonphys);
             scale.Y = Math.Min(scale.Y, Scene.m_maxNonphys);
             scale.Z = Math.Min(scale.Z, Scene.m_maxNonphys);
@@ -2722,16 +2724,20 @@ namespace OpenSim.Region.Framework.Scenes
             prevScale.X *= x;
             prevScale.Y *= y;
             prevScale.Z *= z;
+
+//            RootPart.IgnoreUndoUpdate = true;
             RootPart.Resize(prevScale);
+//            RootPart.IgnoreUndoUpdate = false;
 
             parts = m_parts.GetArray();
             for (int i = 0; i < parts.Length; i++)
             {
                 SceneObjectPart obPart = parts[i];
-//                obPart.IgnoreUndoUpdate = true;
 
                 if (obPart.UUID != m_rootPart.UUID)
                 {
+                    obPart.IgnoreUndoUpdate = true;
+
                     Vector3 currentpos = new Vector3(obPart.OffsetPosition);
                     currentpos.X *= x;
                     currentpos.Y *= y;
@@ -2741,12 +2747,11 @@ namespace OpenSim.Region.Framework.Scenes
                     newSize.X *= x;
                     newSize.Y *= y;
                     newSize.Z *= z;
-                    
-                    obPart.Resize(newSize);
 
-                    obPart.IgnoreUndoUpdate = true;
+                    obPart.Resize(newSize);
                     obPart.UpdateOffSet(currentpos);
-                    obPart.IgnoreUndoUpdate = false;
+
+                    obPart.IgnoreUndoUpdate = false;                    
                 }
 
 //                obPart.IgnoreUndoUpdate = false;
@@ -2769,9 +2774,11 @@ namespace OpenSim.Region.Framework.Scenes
         {
 //            m_log.DebugFormat("[SCENE OBJECT GROUP]: Updating group position on {0} {1} to {2}", Name, LocalId, pos);
 
-            SceneObjectPart[] parts = m_parts.GetArray();
-            for (int i = 0; i < parts.Length; i++)
-                parts[i].StoreUndoState();
+            RootPart.StoreUndoState(true);
+
+//            SceneObjectPart[] parts = m_parts.GetArray();
+//            for (int i = 0; i < parts.Length; i++)
+//                parts[i].StoreUndoState();
 
             if (m_scene.EventManager.TriggerGroupMove(UUID, pos))
             {
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index 44d7ce3..5414cf2 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -3665,6 +3665,11 @@ namespace OpenSim.Region.Framework.Scenes
 
         public void StoreUndoState()
         {
+            StoreUndoState(false);
+        }
+
+        public void StoreUndoState(bool forGroup)
+        {
             if (!Undoing)
             {
                 if (!IgnoreUndoUpdate)
@@ -3678,6 +3683,7 @@ namespace OpenSim.Region.Framework.Scenes
                                 UndoState last = m_undo.Peek();
                                 if (last != null)
                                 {
+                                    // TODO: May need to fix for group comparison
                                     if (last.Compare(this))
                                     {
 //                                        m_log.DebugFormat(
@@ -3690,12 +3696,12 @@ namespace OpenSim.Region.Framework.Scenes
                             }
 
 //                            m_log.DebugFormat(
-//                                "[SCENE OBJECT PART]: Storing undo state for {0} {1}, initial stack size {2}",
-//                                Name, LocalId, m_undo.Count);
+//                                "[SCENE OBJECT PART]: Storing undo state for {0} {1}, forGroup {2}, initial stack size {3}",
+//                                Name, LocalId, forGroup, m_undo.Count);
 
                             if (m_parentGroup.GetSceneMaxUndo() > 0)
                             {
-                                UndoState nUndo = new UndoState(this);
+                                UndoState nUndo = new UndoState(this, forGroup);
 
                                 m_undo.Push(nUndo);
 
@@ -3740,17 +3746,17 @@ namespace OpenSim.Region.Framework.Scenes
 
                 if (m_undo.Count > 0)
                 {
-                    UndoState nUndo = null;
-
-                    if (m_parentGroup.GetSceneMaxUndo() > 0)
-                    {
-                        nUndo = new UndoState(this);
-                    }
-                    
                     UndoState goback = m_undo.Pop();
 
                     if (goback != null)
                     {
+                        UndoState nUndo = null;
+        
+                        if (m_parentGroup.GetSceneMaxUndo() > 0)
+                        {
+                            nUndo = new UndoState(this, goback.ForGroup);
+                        }
+
                         goback.PlaybackState(this);
 
                         if (nUndo != null)
@@ -3772,17 +3778,19 @@ namespace OpenSim.Region.Framework.Scenes
 //                    "[SCENE OBJECT PART]: Handling redo request for {0} {1}, stack size {2}",
 //                    Name, LocalId, m_redo.Count);
 
-                if (m_parentGroup.GetSceneMaxUndo() > 0)
-                {
-                    UndoState nUndo = new UndoState(this);
-
-                    m_undo.Push(nUndo);
-                }
-
                 UndoState gofwd = m_redo.Pop();
 
                 if (gofwd != null)
+                {
+                    if (m_parentGroup.GetSceneMaxUndo() > 0)
+                    {
+                        UndoState nUndo = new UndoState(this, gofwd.ForGroup);
+
+                        m_undo.Push(nUndo);
+                    }
+
                     gofwd.PlayfwdState(this);
+                }
 
 //                m_log.DebugFormat(
 //                    "[SCENE OBJECT PART]: Handled redo request for {0} {1}, stack size now {2}",
diff --git a/OpenSim/Region/Framework/Scenes/UndoState.cs b/OpenSim/Region/Framework/Scenes/UndoState.cs
index 38bbeb0..1fa8ee2 100644
--- a/OpenSim/Region/Framework/Scenes/UndoState.cs
+++ b/OpenSim/Region/Framework/Scenes/UndoState.cs
@@ -42,10 +42,16 @@ namespace OpenSim.Region.Framework.Scenes
         public Quaternion Rotation = Quaternion.Identity;
 
         /// <summary>
+        /// Is this undo state for an entire group?
+        /// </summary>
+        public bool ForGroup;
+
+        /// <summary>
         /// Constructor.
         /// </summary>
         /// <param name="part"></param>
-        public UndoState(SceneObjectPart part)
+        /// <param name="forGroup">True if the undo is for an entire group</param>
+        public UndoState(SceneObjectPart part, bool forGroup)
         {
             if (part != null)
             {
@@ -62,6 +68,8 @@ namespace OpenSim.Region.Framework.Scenes
 //                    m_log.DebugFormat(
 //                        "[UNDO STATE]: Storing undo scale {0} for root part", part.Shape.Scale);
                     Scale = part.Shape.Scale;
+
+                    ForGroup = forGroup;
                 }
                 else
                 {
@@ -141,7 +149,10 @@ namespace OpenSim.Region.Framework.Scenes
 //                            "[UNDO STATE]: Undoing scale {0} to {1} for root part {2} {3}",
 //                            part.Shape.Scale, Scale, part.Name, part.LocalId);
 
-                        part.Resize(Scale);
+                        if (ForGroup)
+                            part.ParentGroup.GroupResize(Scale);
+                        else
+                            part.Resize(Scale);
                     }
 
                     part.ParentGroup.ScheduleGroupForTerseUpdate();
@@ -194,7 +205,12 @@ namespace OpenSim.Region.Framework.Scenes
                         part.UpdateRotation(Rotation);
 
                     if (Scale != Vector3.Zero)
-                        part.Resize(Scale);
+                    {
+                        if (ForGroup)
+                            part.ParentGroup.GroupResize(Scale);
+                        else
+                            part.Resize(Scale);
+                    }
 
                     part.ParentGroup.ScheduleGroupForTerseUpdate();
                 }
@@ -241,4 +257,4 @@ namespace OpenSim.Region.Framework.Scenes
             m_terrainModule.UndoTerrain(m_terrainChannel);
         }
     }
-}
+}
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