3 files changed, 330 insertions, 0 deletions

diff --git a/OpenSim/Region/Framework/Scenes/KeyframeMotion.cs b/OpenSim/Region/Framework/Scenes/KeyframeMotion.cs
new file mode 100644
index 0000000..239f7ca
--- /dev/null
+++ b/OpenSim/Region/Framework/Scenes/KeyframeMotion.cs
@@ -0,0 +1,315 @@
+// Proprietary code of Avination Virtual Limited
+// (c) 2012 Melanie Thielker
+//
+
+using System;
+using System.Timers;
+using System.Collections.Generic;
+using System.IO;
+using System.Diagnostics;
+using System.Reflection;
+using System.Threading;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.Framework.Scenes.Serialization;
+using Timer = System.Timers.Timer;
+using log4net;
+
+namespace OpenSim.Region.Framework.Scenes
+{
+    public class KeyframeMotion
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        public enum PlayMode : int
+        {
+            Forward = 0,
+            Reverse = 1,
+            Loop = 2,
+            PingPong = 3
+        };
+
+        [Flags]
+        public enum DataFormat : int
+        {
+            Translation = 1,
+            Rotation = 2
+        }
+
+        public struct Keyframe
+        {
+            public Vector3? Position;
+            public Quaternion? Rotation;
+            public Quaternion StartRotation;
+            public int TimeMS;
+            public int TimeTotal;
+            public Vector3 AngularVelocity;
+        };
+
+        private Vector3 m_basePosition;
+        private Quaternion m_baseRotation;
+
+        private Keyframe m_currentFrame;
+        private List<Keyframe> m_frames = new List<Keyframe>();
+
+        private Keyframe[] m_keyframes;
+
+        private Timer m_timer = new Timer();
+
+        private readonly SceneObjectGroup m_group;
+
+        private PlayMode m_mode = PlayMode.Forward;
+        private DataFormat m_data = DataFormat.Translation | DataFormat.Rotation;
+
+        private int m_iterations = 0;
+
+        private const double timerInterval = 50.0;
+
+        public DataFormat Data
+        {
+            get { return m_data; }
+        }
+
+        public KeyframeMotion(SceneObjectGroup grp, PlayMode mode, DataFormat data)
+        {
+            m_mode = mode;
+            m_data = data;
+
+            m_group = grp;
+            m_basePosition = grp.AbsolutePosition;
+            m_baseRotation = grp.GroupRotation;
+
+            m_timer.Interval = (int)timerInterval;
+            m_timer.AutoReset = true;
+            m_timer.Elapsed += OnTimer;
+        }
+
+        public void SetKeyframes(Keyframe[] frames)
+        {
+            m_keyframes = frames;
+        }
+
+        public void Start()
+        {
+            if (m_keyframes.Length > 0)
+                m_timer.Start();
+        }
+
+        public void Stop()
+        {
+            m_timer.Stop();
+
+            m_basePosition = m_group.AbsolutePosition;
+            m_baseRotation = m_group.GroupRotation;
+
+            m_group.RootPart.Velocity = Vector3.Zero;
+            m_group.RootPart.UpdateAngularVelocity(Vector3.Zero);
+            m_group.SendGroupRootTerseUpdate();
+
+            m_frames.Clear();
+        }
+
+        public void Pause()
+        {
+            m_group.RootPart.Velocity = Vector3.Zero;
+            m_group.RootPart.UpdateAngularVelocity(Vector3.Zero);
+            m_group.SendGroupRootTerseUpdate();
+
+            m_timer.Stop();
+        }
+
+        private void GetNextList()
+        {
+            m_frames.Clear();
+            Vector3 pos = m_basePosition;
+            Quaternion rot = m_baseRotation;
+
+            if (m_mode == PlayMode.Loop || m_mode == PlayMode.PingPong || m_iterations == 0)
+            {
+                int direction = 1;
+                if (m_mode == PlayMode.Reverse || ((m_mode == PlayMode.PingPong) && ((m_iterations & 1) != 0)))
+                    direction = -1;
+
+                int start = 0;
+                int end = m_keyframes.Length;
+//                if (m_mode == PlayMode.PingPong && m_keyframes.Length > 1)
+//                    end = m_keyframes.Length - 1;
+
+                if (direction < 0)
+                {
+                    start = m_keyframes.Length - 1;
+                    end = -1;
+//                    if (m_mode == PlayMode.PingPong && m_keyframes.Length > 1)
+//                        end = 0;
+                }
+
+                for (int i = start; i != end ; i += direction)
+                {
+                    Keyframe k = m_keyframes[i];
+
+                    if (k.Position.HasValue)
+                        k.Position = (k.Position * direction) + pos;
+                    else
+                        k.Position = pos;
+
+                    k.StartRotation = rot;
+                    if (k.Rotation.HasValue)
+                    {
+                        if (direction == -1)
+                            k.Rotation = Quaternion.Conjugate((Quaternion)k.Rotation);
+                        k.Rotation = rot * k.Rotation;
+                    }
+                    else
+                    {
+                        k.Rotation = rot;
+                    }
+
+                    float angle = 0;
+
+                    float aa = k.StartRotation.X * k.StartRotation.X + k.StartRotation.Y * k.StartRotation.Y + k.StartRotation.Z * k.StartRotation.Z + k.StartRotation.W * k.StartRotation.W;
+                    float bb = ((Quaternion)k.Rotation).X * ((Quaternion)k.Rotation).X + ((Quaternion)k.Rotation).Y * ((Quaternion)k.Rotation).Y + ((Quaternion)k.Rotation).Z * ((Quaternion)k.Rotation).Z + ((Quaternion)k.Rotation).W * ((Quaternion)k.Rotation).W;
+                    float aa_bb = aa * bb;
+
+                    if (aa_bb == 0)
+                    {
+                        angle = 0;
+                    }
+                    else
+                    {
+                        float ab = k.StartRotation.X * ((Quaternion)k.Rotation).X +
+                                   k.StartRotation.Y * ((Quaternion)k.Rotation).Y +
+                                   k.StartRotation.Z * ((Quaternion)k.Rotation).Z +
+                                   k.StartRotation.W * ((Quaternion)k.Rotation).W;
+                        float q = (ab * ab) / aa_bb;
+
+                        if (q > 1.0f)
+                        {
+                            angle = 0;
+                        }
+                        else
+                        {
+                            angle = (float)Math.Acos(2 * q - 1);
+                        }
+                    }
+
+                    m_log.DebugFormat("[KEYFRAME]: Angle {0} aabb {1}", angle, aa_bb);
+                    k.AngularVelocity = (new Vector3(0, 0, 1) * (Quaternion)k.Rotation) * (angle / (k.TimeMS / 1000));
+                    k.TimeTotal = k.TimeMS;
+
+                    m_frames.Add(k);
+
+                    pos = (Vector3)k.Position;
+                    rot = (Quaternion)k.Rotation;
+                }
+
+                m_basePosition = pos;
+                m_baseRotation = rot;
+
+                m_iterations++;
+            }
+        }
+
+        private void OnTimer(object sender, ElapsedEventArgs e)
+        {
+            if (m_frames.Count == 0)
+            {
+                GetNextList();
+
+                if (m_frames.Count == 0)
+                {
+                    Stop();
+                    return;
+                }
+
+                m_currentFrame = m_frames[0];
+            }
+
+            // Do the frame processing
+            double steps = (double)m_currentFrame.TimeMS / timerInterval;
+            float complete = ((float)m_currentFrame.TimeTotal - (float)m_currentFrame.TimeMS) / (float)m_currentFrame.TimeTotal;
+
+            if (steps <= 1.0)
+            {
+                m_currentFrame.TimeMS = 0;
+
+                m_group.AbsolutePosition = (Vector3)m_currentFrame.Position;
+                m_group.UpdateGroupRotationR((Quaternion)m_currentFrame.Rotation);
+            }
+            else
+            {
+                Vector3 v = (Vector3)m_currentFrame.Position - m_group.AbsolutePosition;
+                Vector3 motionThisFrame = v / (float)steps;
+                v = v * 1000 / m_currentFrame.TimeMS;
+
+                bool update = false;
+
+                if (Vector3.Mag(motionThisFrame) >= 0.05f)
+                {
+                    m_group.AbsolutePosition += motionThisFrame;
+                    m_group.RootPart.Velocity = v;
+                    update = true;
+                }
+
+                if ((Quaternion)m_currentFrame.Rotation != m_group.GroupRotation)
+                {
+                    Quaternion current = m_group.GroupRotation;
+
+                    Quaternion step = Quaternion.Slerp(m_currentFrame.StartRotation, (Quaternion)m_currentFrame.Rotation, complete);
+
+                    float angle = 0;
+
+                    float aa = current.X * current.X + current.Y * current.Y + current.Z * current.Z + current.W * current.W;
+                    float bb = step.X * step.X + step.Y * step.Y + step.Z * step.Z + step.W * step.W;
+                    float aa_bb = aa * bb;
+
+                    if (aa_bb == 0)
+                    {
+                        angle = 0;
+                    }
+                    else
+                    {
+                        float ab = current.X * step.X +
+                                   current.Y * step.Y +
+                                   current.Z * step.Z +
+                                   current.W * step.W;
+                        float q = (ab * ab) / aa_bb;
+
+                        if (q > 1.0f)
+                        {
+                            angle = 0;
+                        }
+                        else
+                        {
+                            angle = (float)Math.Acos(2 * q - 1);
+                        }
+                    }
+
+                    if (angle > 0.01f)
+                    {
+                        m_group.UpdateGroupRotationR(step);
+                        //m_group.RootPart.UpdateAngularVelocity(m_currentFrame.AngularVelocity / 2);
+                        update = true;
+                    }
+                }
+
+                if (update)
+                    m_group.SendGroupRootTerseUpdate();
+            }
+
+            m_currentFrame.TimeMS -= (int)timerInterval;
+
+            if (m_currentFrame.TimeMS <= 0)
+            {
+                m_group.RootPart.Velocity = Vector3.Zero;
+                m_group.RootPart.UpdateAngularVelocity(Vector3.Zero);
+                m_group.SendGroupRootTerseUpdate();
+
+                m_frames.RemoveAt(0);
+                if (m_frames.Count > 0)
+                    m_currentFrame = m_frames[0];
+            }
+        }
+    }
+}
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index e9021f1..9898681 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -114,6 +114,12 @@ namespace OpenSim.Region.Framework.Scenes
         private Random m_rand;
         private bool m_suspendUpdates;
         private List<ScenePresence> m_linkedAvatars = new List<ScenePresence>();
+        private KeyframeMotion m_keyframeMotion = null;
+
+        public KeyframeMotion KeyframeMotion
+        {
+            get; set;
+        }
 
         public bool areUpdatesSuspended
         {
@@ -1982,6 +1988,12 @@ namespace OpenSim.Region.Framework.Scenes
 
         public void ScriptSetPhysicsStatus(bool usePhysics)
         {
+            if (usePhysics)
+            {
+                if (KeyframeMotion != null)
+                    KeyframeMotion.Stop();
+                KeyframeMotion = null;
+            }
             UpdatePrimFlags(RootPart.LocalId, usePhysics, IsTemporary, IsPhantom, IsVolumeDetect);
         }
 
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index f35a27e..825f2a3 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -1921,6 +1921,9 @@ namespace OpenSim.Region.Framework.Scenes
                         {
                             if (UsePhysics)
                             {
+                                if (ParentGroup.KeyframeMotion != null)
+                                    ParentGroup.KeyframeMotion.Stop();
+                                ParentGroup.KeyframeMotion = null;
                                 ParentGroup.Scene.AddPhysicalPrim(1);
 
                                 PhysActor.OnRequestTerseUpdate += PhysicsRequestingTerseUpdate;