1 files changed, 73 insertions, 21 deletions

diff --git a/OpenSim/Framework/ILandObject.cs b/OpenSim/Framework/ILandObject.cs
index 8465c86..a783256 100644
--- a/OpenSim/Framework/ILandObject.cs
+++ b/OpenSim/Framework/ILandObject.cs
@@ -43,32 +43,39 @@ namespace OpenSim.Framework
         LandData LandData { get; set; }
         bool[,] LandBitmap { get; set; }
         UUID RegionUUID { get; }
-        
+
         /// <summary>
         /// Prim counts for this land object.
         /// </summary>
         IPrimCounts PrimCounts { get; set; }
-        
+
         /// <summary>
-        /// The start point for the land object.  This is the western-most point as one scans land working from 
-        /// north to south.
+        /// The start point for the land object.  This is the northern-most point as one scans land working from
+        /// west to east.
         /// </summary>
-        Vector3 StartPoint { get; }
-        
+        Vector2 StartPoint { get; }
+
         /// <summary>
-        /// The end point for the land object.  This is the eastern-most point as one scans land working from 
-        /// south to north.
-        /// </summary>        
-        Vector3 EndPoint { get; }
-        
+        /// The end point for the land object.  This is the southern-most point as one scans land working from
+        /// west to east.
+        /// </summary>
+        Vector2 EndPoint { get; }
+
+        // a estimation of a parcel center.
+        Vector2 CenterPoint { get; }
+
+        // get positions
+        Vector2? GetNearestPoint(Vector3 pos);
+        Vector2? GetNearestPointAlongDirection(Vector3 pos, Vector3 pdirection);
+
         bool ContainsPoint(int x, int y);
-        
+
         ILandObject Copy();
 
         void SendLandUpdateToAvatarsOverMe();
 
         void SendLandProperties(int sequence_id, bool snap_selection, int request_result, IClientAPI remote_client);
-        void UpdateLandProperties(LandUpdateArgs args, IClientAPI remote_client);
+        bool UpdateLandProperties(LandUpdateArgs args, IClientAPI remote_client, out bool snap_selection, out bool needOverlay);
         bool IsEitherBannedOrRestricted(UUID avatar);
         bool IsBannedFromLand(UUID avatar);
         bool CanBeOnThisLand(UUID avatar, float posHeight);
@@ -90,27 +97,70 @@ namespace OpenSim.Framework
         /// </summary>
         /// <returns>The bitmap created.</returns>
         bool[,] BasicFullRegionLandBitmap();
-        
+
         /// <summary>
         /// Create a square land bitmap.
         /// </summary>
         /// <remarks>
         /// Land co-ordinates are zero indexed.  The inputs are treated as points.  So if you want to create a bitmap
-        /// that covers an entire 256 x 256m region apart from a strip of land on the east, then you would need to 
-        /// specify start_x = 0, start_y = 0, end_x = 252 (or anything up to 255), end_y = 256.
-        /// 
-        /// At the moment, the smallest parcel of land is 4m x 4m, so if the 
+        /// that covers an entire 256 x 256m region apart from a strip of land on the east, then you would need to
+        /// specify start_x = 0, start_y = 0, end_x = 252 (or anything up to 255), end_y = 255.
+        ///
+        /// At the moment, the smallest parcel of land is 4m x 4m, so if the
         /// region is 256 x 256m (the SL size), the bitmap returned will start at (0,0) and end at (63,63).
+        /// The value of the set_value needs to be true to define an active parcel of the given size.
         /// </remarks>
         /// <param name="start_x"></param>
         /// <param name="start_y"></param>
         /// <param name="end_x"></param>
         /// <param name="end_y"></param>
+        /// <param name="set_value"></param>
         /// <returns>The bitmap created.</returns>
-        bool[,] GetSquareLandBitmap(int start_x, int start_y, int end_x, int end_y);
-        
+        bool[,] GetSquareLandBitmap(int start_x, int start_y, int end_x, int end_y, bool set_value = true);
+
         bool[,] ModifyLandBitmapSquare(bool[,] land_bitmap, int start_x, int start_y, int end_x, int end_y, bool set_value);
+
+        /// <summary>
+        /// Merge two (same size) land bitmaps.
+        /// </summary>
+        /// <param name="bitmap_base"></param>
+        /// <param name="bitmap_add"></param>
+        /// <returns>The modified bitmap.</returns>
         bool[,] MergeLandBitmaps(bool[,] bitmap_base, bool[,] bitmap_add);
+
+        /// <summary>
+        /// Remap a land bitmap. Takes the supplied land bitmap and rotates it, crops it and finally offsets it into
+        /// a final land bitmap of the target region size.
+        /// </summary>
+        /// <param name="bitmap_base">The original parcel bitmap</param>
+        /// <param name="rotationDegrees"></param>
+        /// <param name="displacement">&lt;x,y,?&gt;</param>
+        /// <param name="boundingOrigin">&lt;x,y,?&gt;</param>
+        /// <param name="boundingSize">&lt;x,y,?&gt;</param>
+        /// <param name="regionSize">&lt;x,y,?&gt;</param>
+        /// <param name="isEmptyNow">out: This is set if the resultant bitmap is now empty</param>
+        /// <param name="AABBMin">out: parcel.AABBMin &lt;x,y,0&gt</param>
+        /// <param name="AABBMax">out: parcel.AABBMax &lt;x,y,0&gt</param>
+        /// <returns>New parcel bitmap</returns>
+        bool[,] RemapLandBitmap(bool[,] bitmap_base, Vector2 displacement, float rotationDegrees, Vector2 boundingOrigin, Vector2 boundingSize, Vector2 regionSize, out bool isEmptyNow, out Vector3 AABBMin, out Vector3 AABBMax);
+
+        /// <summary>
+        /// Clears any parcel data in bitmap_base where there exists parcel data in bitmap_new. In other words the parcel data
+        /// in bitmap_new takes over the space of the parcel data in bitmap_base.
+        /// </summary>
+        /// <param name="bitmap_base"></param>
+        /// <param name="bitmap_new"></param>
+        /// <param name="isEmptyNow">out: This is set if the resultant bitmap is now empty</param>
+        /// <param name="AABBMin">out: parcel.AABBMin &lt;x,y,0&gt;</param>
+        /// <param name="AABBMax">out: parcel.AABBMax &lt;x,y,0&gt</param>
+        /// <returns>New parcel bitmap</returns>
+        bool[,] RemoveFromLandBitmap(bool[,] bitmap_base, bool[,] bitmap_new, out bool isEmptyNow, out Vector3 AABBMin, out Vector3 AABBMax);
+
+        byte[] ConvertLandBitmapToBytes();
+        bool[,] ConvertBytesToLandBitmap(bool overrideRegionSize = false);
+        bool IsLandBitmapEmpty(bool[,] landBitmap);
+        void DebugLandBitmap(bool[,] landBitmap);
+
         void SendForceObjectSelect(int local_id, int request_type, List<UUID> returnIDs, IClientAPI remote_client);
         void SendLandObjectOwners(IClientAPI remote_client);
         void ReturnLandObjects(uint type, UUID[] owners, UUID[] tasks, IClientAPI remote_client);
@@ -127,7 +177,7 @@ namespace OpenSim.Framework
         /// </summary>
         /// <param name="url"></param>
         void SetMediaUrl(string url);
-        
+
         /// <summary>
         /// Set the music url for this land parcel
         /// </summary>
@@ -139,5 +189,7 @@ namespace OpenSim.Framework
         /// </summary>
         /// <returns>The music url.</returns>
         string GetMusicUrl();
+
+        void Clear();
     }
 }