OpenSim-Test/OpenSim/Region/Environment/Scenes/UndoState.cs

/*
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 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
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 * modification, are permitted provided that the following conditions are met:
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 *       notice, this list of conditions and the following disclaimer in the
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 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using libsecondlife;

namespace OpenSim.Region.Environment.Scenes
{
    public class UndoState
    {
        public LLVector3 Position = LLVector3.Zero;
        public LLVector3 Scale = LLVector3.Zero;
        public LLQuaternion Rotation = LLQuaternion.Identity;

        public UndoState(LLVector3 pos, LLQuaternion rot, LLVector3 scale)
        {
            Position = pos;
            Rotation = rot;
            Scale = scale;
        }
        
        public UndoState(SceneObjectPart part)
        {
            if (part != null)
            {
                if (part.ParentID == 0)
                {
                    Position = part.AbsolutePosition;
                    Rotation = part.RotationOffset;
                    
                }
                else
                {
                    Position = part.GroupPosition;
                    Rotation = part.RotationOffset;
                    Scale = part.Shape.Scale;

                }
            }
        }

        public bool Compare(SceneObjectPart part)
        {
            if (part != null)
            {
                if (part.ParentID == 0)
                {
                    if (Position == part.AbsolutePosition && Rotation == part.RotationOffset)
                        return true;
                    else
                        return false;
                }
                else
                {
                    if (Position == part.GroupPosition && Rotation == part.RotationOffset && Scale == part.Shape.Scale)
                        return true;
                    else
                        return false;

                }
            }
            return false;
        }

        public void PlaybackState(SceneObjectPart part)
        {
            if (part != null)
            {
                part.m_undoing = true;
                
                if (part.ParentID == 0)
                {
                    part.ParentGroup.AbsolutePosition = Position;
                    part.UpdateRotation(Rotation);
                    part.ParentGroup.ScheduleGroupForTerseUpdate();
                }
                else
                {
                    part.OffsetPosition = Position;
                    part.UpdateRotation(Rotation);
                    part.Resize(Scale);
                    part.ScheduleTerseUpdate();
                }
                part.m_undoing = false;
                
            }
        }

        public UndoState()
        {
        }
    }
}