1 files changed, 76 insertions, 4 deletions

diff --git a/OpenSim/Region/Framework/Scenes/UndoState.cs b/OpenSim/Region/Framework/Scenes/UndoState.cs
index 77381ab..ad05351 100644
--- a/OpenSim/Region/Framework/Scenes/UndoState.cs
+++ b/OpenSim/Region/Framework/Scenes/UndoState.cs
@@ -27,26 +27,43 @@
 
 using OpenMetaverse;
 using OpenSim.Region.Framework.Interfaces;
+using System;
 
 namespace OpenSim.Region.Framework.Scenes
 {
+    [Flags]
+    public enum UndoType
+    {
+        STATE_PRIM_POSITION = 1,
+        STATE_PRIM_ROTATION = 2,
+        STATE_PRIM_SCALE = 4,
+        STATE_PRIM_ALL = 7,
+        STATE_GROUP_POSITION = 8,
+        STATE_GROUP_ROTATION = 16,
+        STATE_GROUP_SCALE = 32,
+        STATE_GROUP_ALL = 56,
+        STATE_ALL = 63       
+    }
+
     public class UndoState
     {
         public Vector3 Position = Vector3.Zero;
         public Vector3 Scale = Vector3.Zero;
         public Quaternion Rotation = Quaternion.Identity;
-        public bool GroupChange = false;
         public Vector3 GroupPosition = Vector3.Zero;
         public Quaternion GroupRotation = Quaternion.Identity;
         public Vector3 GroupScale = Vector3.Zero;
+        public DateTime LastUpdated = DateTime.Now;
+        public UndoType Type;
 
-        public UndoState(SceneObjectPart part)
+        public UndoState(SceneObjectPart part, UndoType type)
         {
+            Type = type;
             if (part != null)
             {
                 if (part.ParentID == 0)
                 {
-                    GroupScale = part.Shape.Scale;
+                    GroupScale = part.ParentGroup.RootPart.Shape.Scale;
 
                     //FUBAR WARNING: Do NOT get the group's absoluteposition here 
                     //or you'll experience a loop and/or a stack issue
@@ -55,6 +72,7 @@ namespace OpenSim.Region.Framework.Scenes
                     Position = part.ParentGroup.RootPart.AbsolutePosition;
                     Rotation = part.RotationOffset;
                     Scale = part.Shape.Scale;
+                    LastUpdated = DateTime.Now;
                 }
                 else
                 {
@@ -67,10 +85,54 @@ namespace OpenSim.Region.Framework.Scenes
                     Position = part.OffsetPosition;
                     Rotation = part.RotationOffset;
                     Scale = part.Shape.Scale;
+                    LastUpdated = DateTime.Now;
                 }
             }
         }
-
+        public void Merge(UndoState last)
+        {
+            if ((Type & UndoType.STATE_GROUP_POSITION) == 0 || ((last.Type & UndoType.STATE_GROUP_POSITION) >= (Type & UndoType.STATE_GROUP_POSITION)))
+            {
+                GroupPosition = last.GroupPosition;
+                Position = last.Position;
+            }
+            if ((Type & UndoType.STATE_GROUP_SCALE) == 0 || ((last.Type & UndoType.STATE_GROUP_SCALE) >= (Type & UndoType.STATE_GROUP_SCALE)))
+            {
+                Console.WriteLine("Setting groupscale to " + last.GroupScale.ToString());
+                GroupScale = last.GroupScale;
+                Scale = last.Scale;
+            }
+            if ((Type & UndoType.STATE_GROUP_ROTATION) == 0 || ((last.Type & UndoType.STATE_GROUP_ROTATION) >= (Type & UndoType.STATE_GROUP_ROTATION)))
+            {
+                GroupRotation = last.GroupRotation;
+                Rotation = last.Rotation;
+            }
+            if ((Type & UndoType.STATE_PRIM_POSITION) == 0 || ((last.Type & UndoType.STATE_PRIM_POSITION) >= (Type & UndoType.STATE_PRIM_POSITION)))
+            {
+                Position = last.Position;
+            }
+            if ((Type & UndoType.STATE_PRIM_SCALE) == 0 || ((last.Type & UndoType.STATE_PRIM_SCALE) >= (Type & UndoType.STATE_PRIM_SCALE)))
+            {
+                Scale = last.Scale;
+            }
+            if ((Type & UndoType.STATE_PRIM_ROTATION) == 0 || ((last.Type & UndoType.STATE_PRIM_ROTATION) >= (Type & UndoType.STATE_PRIM_ROTATION)))
+            {
+                Rotation = last.Rotation;
+            }
+            Type = Type | last.Type;
+        }
+        public bool Compare(UndoState undo)
+        {
+            if (undo == null || Position == null) return false;
+            if (undo.Position == Position && undo.Rotation == Rotation  && undo.Scale == Scale && undo.GroupPosition == GroupPosition && undo.GroupScale == GroupScale && undo.GroupRotation == GroupRotation)
+            {
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
         public bool Compare(SceneObjectPart part)
         {
             if (part != null)
@@ -96,6 +158,14 @@ namespace OpenSim.Region.Framework.Scenes
 
         public void PlaybackState(SceneObjectPart part)
         {
+            bool GroupChange = false;
+            if ((Type & UndoType.STATE_GROUP_POSITION) != 0
+                || (Type & UndoType.STATE_GROUP_ROTATION) != 0
+                || (Type & UndoType.STATE_GROUP_SCALE) != 0)
+            {
+                GroupChange = true;
+            }
+
             if (part != null)
             {
                 part.Undoing = true;
@@ -113,6 +183,7 @@ namespace OpenSim.Region.Framework.Scenes
                 {
                     if (GroupChange)
                     {
+                        part.ParentGroup.RootPart.Undoing = true;
                         if (Position != Vector3.Zero)
                         {
                             //Calculate the scale...
@@ -125,6 +196,7 @@ namespace OpenSim.Region.Framework.Scenes
                             part.ParentGroup.Rotation = GroupRotation;
                            
                         }
+                        part.ParentGroup.RootPart.Undoing = false;
                     }
                     else
                     {