From e947d04038f7b42929368d9f7b6d440be139e675 Mon Sep 17 00:00:00 2001
From: Tom Grimshaw
Date: Mon, 5 Jul 2010 05:44:35 -0700
Subject: Undo fix is now complete. This commit repairs the special case of the
 root prim moving or rotating independently of the rest of the group.

---
 .../Region/Framework/Scenes/SceneObjectGroup.cs    | 49 +++++++++++++++++-----
 OpenSim/Region/Framework/Scenes/SceneObjectPart.cs |  2 -
 OpenSim/Region/Framework/Scenes/UndoState.cs       |  5 ++-
 3 files changed, 41 insertions(+), 15 deletions(-)

diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 7492601..f85d3d9 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -3386,10 +3386,27 @@ namespace OpenSim.Region.Framework.Scenes
             }
             lockPartsForRead(false);
 
-            AbsolutePosition = newPos;
+            //We have to set undoing here because otherwise an undo state will be saved
+            if (!m_rootPart.Undoing)
+            {
+                m_rootPart.Undoing = true;
+                AbsolutePosition = newPos;
+                m_rootPart.Undoing = false;
+            }
+            else
+            {
+                AbsolutePosition = newPos;
+            }
 
             HasGroupChanged = true;
-            ScheduleGroupForTerseUpdate();
+            if (m_rootPart.Undoing)
+            {
+                ScheduleGroupForFullUpdate();
+            }
+            else
+            {
+                ScheduleGroupForTerseUpdate();
+            }
         }
 
         public void OffsetForNewRegion(Vector3 offset)
@@ -3488,7 +3505,16 @@ namespace OpenSim.Region.Framework.Scenes
                 if (part.UUID == m_rootPart.UUID)
                 {
                     UpdateRootRotation(rot);
-                    AbsolutePosition = pos;
+                    if (!m_rootPart.Undoing)
+                    {
+                        m_rootPart.Undoing = true;
+                        AbsolutePosition = pos;
+                        m_rootPart.Undoing = false;
+                    }
+                    else
+                    {
+                        AbsolutePosition = pos;
+                    }
                 }
                 else
                 {
@@ -3511,6 +3537,12 @@ namespace OpenSim.Region.Framework.Scenes
             Quaternion oldParentRot = m_rootPart.RotationOffset;
 
             m_rootPart.StoreUndoState(UndoType.STATE_PRIM_ROTATION);
+            bool cancelUndo = false;
+            if (!m_rootPart.Undoing)
+            {
+                m_rootPart.Undoing = true;
+                cancelUndo = true;
+            }
             m_rootPart.UpdateRotation(rot);
             if (m_rootPart.PhysActor != null)
             {
@@ -3534,18 +3566,13 @@ namespace OpenSim.Region.Framework.Scenes
                     newRot *= Quaternion.Inverse(axRot);
                     prim.RotationOffset = newRot;
                     prim.ScheduleTerseUpdate();
+                    prim.IgnoreUndoUpdate = false;
                 }
             }
-
-            foreach (SceneObjectPart childpart in Children.Values)
+            if (cancelUndo == true)
             {
-                if (childpart != m_rootPart)
-                {
-                    childpart.IgnoreUndoUpdate = false;
-                    childpart.StoreUndoState(UndoType.STATE_PRIM_ROTATION);
-                }
+                m_rootPart.Undoing = false;
             }
-
             lockPartsForRead(false);
 
             m_rootPart.ScheduleTerseUpdate();
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index 93a23ca..3327b1e 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -3506,8 +3506,6 @@ namespace OpenSim.Region.Framework.Scenes
         }
         public void StoreUndoState(UndoType type)
         {
-
-
             if (!Undoing && (m_parentGroup == null || m_parentGroup.RootPart == null || !m_parentGroup.RootPart.Undoing))
             {
                 if (!IgnoreUndoUpdate)
diff --git a/OpenSim/Region/Framework/Scenes/UndoState.cs b/OpenSim/Region/Framework/Scenes/UndoState.cs
index 2af3316..f71b507 100644
--- a/OpenSim/Region/Framework/Scenes/UndoState.cs
+++ b/OpenSim/Region/Framework/Scenes/UndoState.cs
@@ -172,8 +172,9 @@ namespace OpenSim.Region.Framework.Scenes
                 if (part.ParentID == 0 && GroupChange == false)
                 {
                     if (Position != Vector3.Zero)
-                        part.ParentGroup.AbsolutePosition = Position;
-                    part.RotationOffset = Rotation;
+
+                    part.ParentGroup.UpdateSinglePosition(Position, part.LocalId);
+                    part.ParentGroup.UpdateSingleRotation(Rotation, part.LocalId);
                     if (Scale != Vector3.Zero)
                         part.Resize(Scale);
                     part.ParentGroup.ScheduleGroupForTerseUpdate();
-- 
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