varregion: fix GetLandObject error return and initialization of square

land object bitmaps. This fixes creation of child presences and the
editing of parcels.
Also lots of commented out debugging messages.

2 files changed, 33 insertions, 10 deletions

diff --git a/OpenSim/Region/CoreModules/World/Land/LandManagementModule.cs b/OpenSim/Region/CoreModules/World/Land/LandManagementModule.cs
index 3f21f85..5b98d97 100644
--- a/OpenSim/Region/CoreModules/World/Land/LandManagementModule.cs
+++ b/OpenSim/Region/CoreModules/World/Land/LandManagementModule.cs
@@ -635,14 +635,14 @@ namespace OpenSim.Region.CoreModules.World.Land
                 new_land.LandData.LocalID = newLandLocalID;
 
                 bool[,] landBitmap = new_land.GetLandBitmap();
-                m_log.DebugFormat("{0} AddLandObject. new_land.bitmapSize=({1},{2}). bitmap[600/4,600/4]={3}, newLocalID={4}",
-                                LogHeader, landBitmap.GetLength(0), landBitmap.GetLength(1), landBitmap[600/4, 600/4], newLandLocalID);
+                // m_log.DebugFormat("{0} AddLandObject. new_land.bitmapSize=({1},{2}). newLocalID={3}",
+                //                 LogHeader, landBitmap.GetLength(0), landBitmap.GetLength(1), newLandLocalID);
 
                 if (landBitmap.GetLength(0) != m_landIDList.GetLength(0) || landBitmap.GetLength(1) != m_landIDList.GetLength(1))
                 {
                     // Going to variable sized regions can cause mismatches
                     m_log.ErrorFormat("{0} AddLandObject. Added land bitmap different size than region ID map. bitmapSize=({1},{2}), landIDSize=({3},{4})",
-                        LogHeader, landBitmap.GetLength(0), m_landIDList.GetLength(1), landBitmap.GetLength(0), m_landIDList.GetLength(1) );
+                        LogHeader, landBitmap.GetLength(0), landBitmap.GetLength(1), m_landIDList.GetLength(0), m_landIDList.GetLength(1) );
                 }
                 else
                 {
@@ -769,7 +769,7 @@ namespace OpenSim.Region.CoreModules.World.Land
         /// <returns>Land object at the point supplied</returns>
         public ILandObject GetLandObject(float x_float, float y_float)
         {
-            return GetLandObject((int)x_float, (int)y_float);
+            return GetLandObject((int)x_float, (int)y_float, true /* returnNullIfLandObjectNotFound */);
             /*
             int x;
             int y;
@@ -823,18 +823,28 @@ namespace OpenSim.Region.CoreModules.World.Land
              */
         }
 
-        // Given a region position, return the parcel land object for that location
+        // Public entry.
+        // Throws exception if land object is not found
         public ILandObject GetLandObject(int x, int y)
         {
+            return GetLandObject(x, y, false /* returnNullIfLandObjectNotFound */);
+        }
+
+        // Given a region position, return the parcel land object for that location
+        private ILandObject GetLandObject(int x, int y, bool returnNullIfLandObjectNotFound)
+        {
             ILandObject ret = null;
 
             if (x >= m_scene.RegionInfo.RegionSizeX || y >=  m_scene.RegionInfo.RegionSizeY || x < 0 || y < 0)
             {
                 // These exceptions here will cause a lot of complaints from the users specifically because
                 // they happen every time at border crossings
-                throw new Exception(
-                    String.Format("{0} GetLandObject for non-existant position. Region={1}, pos=<{2},{3}",
-                                            LogHeader, m_scene.RegionInfo.RegionName, x, y)
+                if (returnNullIfLandObjectNotFound)
+                    return null;
+                else
+                    throw new Exception(
+                        String.Format("{0} GetLandObject for non-existant position. Region={1}, pos=<{2},{3}",
+                                                LogHeader, m_scene.RegionInfo.RegionName, x, y)
                 );
             }
 
diff --git a/OpenSim/Region/CoreModules/World/Land/LandObject.cs b/OpenSim/Region/CoreModules/World/Land/LandObject.cs
index 0bde877..2a4d8d8 100644
--- a/OpenSim/Region/CoreModules/World/Land/LandObject.cs
+++ b/OpenSim/Region/CoreModules/World/Land/LandObject.cs
@@ -102,6 +102,8 @@ namespace OpenSim.Region.CoreModules.World.Land
                     }
                 }
 
+                m_log.ErrorFormat("{0} StartPoint. No start point found. bitmapSize=<{1},{2}>",
+                                    LogHeader, LandBitmap.GetLength(0), LandBitmap.GetLength(1));
                 return new Vector3(-1, -1, -1);
             }
         }
@@ -121,6 +123,8 @@ namespace OpenSim.Region.CoreModules.World.Land
                     }
                 }
 
+                m_log.ErrorFormat("{0} EndPoint. No end point found. bitmapSize=<{1},{2}>",
+                                    LogHeader, LandBitmap.GetLength(0), LandBitmap.GetLength(1));
                 return new Vector3(-1, -1, -1);
             }
         }
@@ -757,6 +761,7 @@ namespace OpenSim.Region.CoreModules.World.Land
         public void SetLandBitmap(bool[,] bitmap)
         {
             LandBitmap = bitmap;
+            // m_log.DebugFormat("{0} SetLandBitmap. BitmapSize=<{1},{2}>", LogHeader, LandBitmap.GetLength(0), LandBitmap.GetLength(1));
             ForceUpdateLandInfo();
         }
 
@@ -776,10 +781,14 @@ namespace OpenSim.Region.CoreModules.World.Land
         
         public bool[,] GetSquareLandBitmap(int start_x, int start_y, int end_x, int end_y)
         {
-            bool[,] tempBitmap = new bool[(end_x-start_x)/landUnit,(end_y-start_y)/landUnit];
+            // Empty bitmap for the whole region
+            bool[,] tempBitmap = new bool[m_scene.RegionInfo.RegionSizeX / landUnit, m_scene.RegionInfo.RegionSizeY / landUnit];
             tempBitmap.Initialize();
 
+            // Fill the bitmap square area specified by state and end
             tempBitmap = ModifyLandBitmapSquare(tempBitmap, start_x, start_y, end_x, end_y, true);
+            // m_log.DebugFormat("{0} GetSquareLandBitmap. tempBitmapSize=<{1},{2}>",
+            //                         LogHeader, tempBitmap.GetLength(0), tempBitmap.GetLength(1));
             return tempBitmap;
         }
 
@@ -808,6 +817,8 @@ namespace OpenSim.Region.CoreModules.World.Land
                     }
                 }
             }
+            // m_log.DebugFormat("{0} ModifyLandBitmapSquare. startXY=<{1},{2}>, endXY=<{3},{4}>, val={5}, landBitmapSize=<{6},{7}>",
+            //                         LogHeader, start_x, start_y, end_x, end_y, set_value, land_bitmap.GetLength(0), land_bitmap.GetLength(1));
             return land_bitmap;
         }
 
@@ -868,6 +879,8 @@ namespace OpenSim.Region.CoreModules.World.Land
                     }
                 }
             }
+            // m_log.DebugFormat("{0} ConvertLandBitmapToBytes. BitmapSize=<{1},{2}>",
+            //                         LogHeader, LandBitmap.GetLength(0), LandBitmap.GetLength(1));
             return tempConvertArr;
         }
 
@@ -886,7 +899,7 @@ namespace OpenSim.Region.CoreModules.World.Land
                 //    and only set the lower area of the larger region.
                 xLen = (int)(Constants.RegionSize / landUnit);
             }
-            m_log.DebugFormat("{0} ConvertBytesToLandBitmap: bitmapLen={1}, xLen={2}", LogHeader, bitmapLen, xLen);
+            // m_log.DebugFormat("{0} ConvertBytesToLandBitmap: bitmapLen={1}, xLen={2}", LogHeader, bitmapLen, xLen);
 
             int x = 0, y = 0;
             for (int i = 0; i < bitmapLen; i++)