varregion: many replacements of in-place arithmetic with calls to

the Util functions for converting world addresses to region addresses
and converting region handles to locations.

OpenSim/ApplicationPlugins/RemoteController/RemoteAdminPlugin.cs

@@ -1022,7 +1022,7 @@ namespace OpenSim.ApplicationPlugins.RemoteController
                     // Set home position
 
                     GridRegion home = scene.GridService.GetRegionByPosition(scopeID, 
-                        (int)(regionXLocation * Constants.RegionSize), (int)(regionYLocation * Constants.RegionSize));
+                                        (int)Util.RegionToWorldLoc(regionXLocation), (int)Util.RegionToWorldLoc(regionYLocation));
                     if (null == home)
                     {
                         m_log.WarnFormat("[RADMIN]: Unable to set home region for newly created user account {0} {1}", firstName, lastName);
@@ -1252,7 +1252,7 @@ namespace OpenSim.ApplicationPlugins.RemoteController
                     if ((null != regionXLocation) && (null != regionYLocation))
                     {
                         GridRegion home = scene.GridService.GetRegionByPosition(scopeID, 
-                            (int)(regionXLocation * Constants.RegionSize), (int)(regionYLocation * Constants.RegionSize));
+                                        (int)Util.RegionToWorldLoc((uint)regionXLocation), (int)Util.RegionToWorldLoc((uint)regionYLocation));
                         if (null == home) {
                             m_log.WarnFormat("[RADMIN]: Unable to set home region for updated user account {0} {1}", firstName, lastName);
                         } else {
@@ -2883,7 +2883,7 @@ namespace OpenSim.ApplicationPlugins.RemoteController
                             // Set home position
 
                             GridRegion home = scene.GridService.GetRegionByPosition(scopeID, 
-                                (int)(regionXLocation * Constants.RegionSize), (int)(regionYLocation * Constants.RegionSize));
+                                        (int)Util.RegionToWorldLoc(regionXLocation), (int)Util.RegionToWorldLoc(regionYLocation));
                             if (null == home) {
                                 m_log.WarnFormat("[RADMIN]: Unable to set home region for newly created user account {0} {1}", names[0], names[1]);
                             } else {

OpenSim/Framework/Util.cs

@@ -336,6 +336,7 @@ namespace OpenSim.Framework
         // Regions are identified with a 'handle' made up of its region coordinates packed into a ulong.
         // Several places rely on the ability to extract a region's location from its handle.
         // Note the location is in 'world coordinates' (see below).
+        // Region handles are based on the lowest coordinate of the region so trim the passed x,y to be the regions 0,0.
         public static ulong RegionWorldLocToHandle(uint X, uint Y)
         {
             return Utils.UIntsToLong(X, Y);

OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs

@@ -192,6 +192,9 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             return m_GridService.GetRegionByUUID(scopeID, regionID);
         }
 
+        // Get a region given its base coordinates.
+        // NOTE: this is NOT 'get a region by some point in the region'. The coordinate MUST
+        //     be the base coordinate of the region.
         public GridRegion GetRegionByPosition(UUID scopeID, int x, int y)
         {
             GridRegion region = null;

OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs

@@ -82,6 +82,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             return new List<GridRegion>(m_neighbours.Values);
         }
 
+        // Get a region given its base coordinates.
+        // NOTE: this is NOT 'get a region by some point in the region'. The coordinate MUST
+        //     be the base coordinate of the region.
+        // The snapping is technically unnecessary but is harmless because regions are always
+        //     multiples of the legacy region size (256).
         public GridRegion GetRegionByPosition(int x, int y)
         {
             uint xsnap = (uint)(x / Constants.RegionSize) * Constants.RegionSize;

OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RemoteGridServiceConnector.cs

@@ -186,10 +186,14 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             return rinfo;
         }
 
+        // Get a region given its base coordinates.
+        // NOTE: this is NOT 'get a region by some point in the region'. The coordinate MUST
+        //     be the base coordinate of the region.
+        // The coordinates are world coords (meters), NOT region units.
         public GridRegion GetRegionByPosition(UUID scopeID, int x, int y)
         {
             bool inCache = false;
-            GridRegion rinfo = m_RegionInfoCache.Get(scopeID, Util.UIntsToLong((uint)x, (uint)y), out inCache);
+            GridRegion rinfo = m_RegionInfoCache.Get(scopeID, Util.RegionWorldLocToHandle((uint)x, (uint)y), out inCache);
             if (inCache)
                 return rinfo;
 

OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/Tests/GridConnectorsTests.cs

@@ -34,6 +34,7 @@ using log4net.Config;
 using Nini.Config;
 using NUnit.Framework;
 using OpenMetaverse;
+
 using OpenSim.Framework;
 using OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid;
 using OpenSim.Region.Framework.Scenes;
@@ -141,7 +142,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid.Tests
             Assert.IsNotNull(result, "Retrieved GetRegionByUUID is null");
             Assert.That(result.RegionID, Is.EqualTo(new UUID(1)), "Retrieved region's UUID does not match");
 
-            result = m_LocalConnector.GetRegionByPosition(UUID.Zero, 1000 * (int)Constants.RegionSize, 1000 * (int)Constants.RegionSize);
+            result = m_LocalConnector.GetRegionByPosition(UUID.Zero, (int)Util.RegionToWorldLoc(1000), (int)Util.RegionToWorldLoc(1000));
             Assert.IsNotNull(result, "Retrieved GetRegionByPosition is null");
             Assert.That(result.RegionLocX, Is.EqualTo(1000 * (int)Constants.RegionSize), "Retrieved region's position does not match");
 

OpenSim/Region/CoreModules/World/Land/LandManagementModule.cs

@@ -1789,7 +1789,7 @@ namespace OpenSim.Region.CoreModules.World.Land
                 {
                     // most likely still cached from building the extLandData entry
                     uint x = 0, y = 0;
-                    Utils.LongToUInts(data.RegionHandle, out x, out y);
+                    Util.RegionHandleToWorldLoc(data.RegionHandle, out x, out y);
                     info = m_scene.GridService.GetRegionByPosition(m_scene.RegionInfo.ScopeID, (int)x, (int)y);
                 }
                 // we need to transfer the fake parcelID, not the one in landData, so the viewer can match it to the landmark.

OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs

@@ -803,7 +803,7 @@ namespace OpenSim.Region.CoreModules.World.WorldMap
             if (httpserver.Length == 0)
             {
                 uint x = 0, y = 0;
-                Utils.LongToUInts(regionhandle, out x, out y);
+                Util.RegionHandleToWorldLoc(regionhandle, out x, out y);
                 GridRegion mreg = m_scene.GridService.GetRegionByPosition(m_scene.RegionInfo.ScopeID, (int)x, (int)y);
 
                 if (mreg != null)

OpenSim/Region/Framework/Scenes/SceneCommunicationService.cs

@@ -166,7 +166,7 @@ namespace OpenSim.Region.Framework.Scenes
                         // we only want to send one update to each simulator; the simulator will
                         // hand it off to the regions where a child agent exists, this does assume
                         // that the region position is cached or performance will degrade
-                        Utils.LongToUInts(regionHandle, out x, out y);
+                        Util.RegionHandleToWorldLoc(regionHandle, out x, out y);
                         GridRegion dest = m_scene.GridService.GetRegionByPosition(UUID.Zero, (int)x, (int)y);
                         if (dest == null)
                             continue;
@@ -203,7 +203,7 @@ namespace OpenSim.Region.Framework.Scenes
 
             //m_commsProvider.InterRegion.TellRegionToCloseChildConnection(regionHandle, agentID);
             uint x = 0, y = 0;
-            Utils.LongToUInts(regionHandle, out x, out y);
+            Util.RegionHandleToWorldLoc(regionHandle, out x, out y);
 
             GridRegion destination = m_scene.GridService.GetRegionByPosition(m_regionInfo.ScopeID, (int)x, (int)y);
 

OpenSim/Server/Handlers/Map/MapAddServerConnector.cs

@@ -116,9 +116,9 @@ namespace OpenSim.Server.Handlers.MapImage
                     httpResponse.StatusCode = (int)OSHttpStatusCode.ClientErrorBadRequest;
                     return FailureResult("Bad request.");
                 }
-                int x = 0, y = 0;
+                uint x = 0, y = 0;
-                Int32.TryParse(request["X"].ToString(), out x);
+                UInt32.TryParse(request["X"].ToString(), out x);
-                Int32.TryParse(request["Y"].ToString(), out y);
+                UInt32.TryParse(request["Y"].ToString(), out y);
 
                 m_log.DebugFormat("[MAP ADD SERVER CONNECTOR]: Received map data for region at {0}-{1}", x, y);
 
@@ -130,7 +130,7 @@ namespace OpenSim.Server.Handlers.MapImage
                 if (m_GridService != null)
                 {
                     System.Net.IPAddress ipAddr = GetCallerIP(httpRequest);
-                    GridRegion r = m_GridService.GetRegionByPosition(UUID.Zero, x * (int)Constants.RegionSize, y * (int)Constants.RegionSize);
+                    GridRegion r = m_GridService.GetRegionByPosition(UUID.Zero, (int)Util.RegionToWorldLoc(x), (int)Util.RegionToWorldLoc(y));
                     if (r != null)
                     {
                         if (r.ExternalEndPoint.Address.ToString() != ipAddr.ToString())
@@ -151,7 +151,7 @@ namespace OpenSim.Server.Handlers.MapImage
                 byte[] data = Convert.FromBase64String(request["DATA"].ToString());
 
                 string reason = string.Empty;
-                bool result = m_MapService.AddMapTile(x, y, data, out reason);
+                bool result = m_MapService.AddMapTile((int)x, (int)y, data, out reason);
 
                 if (result)
                     return SuccessResult();

OpenSim/Services/Connectors/Land/LandServicesConnector.cs

@@ -78,7 +78,7 @@ namespace OpenSim.Services.Connectors
             try
             {
                 uint xpos = 0, ypos = 0;
-                Utils.LongToUInts(regionHandle, out xpos, out ypos);
+                Util.RegionHandleToWorldLoc(regionHandle, out xpos, out ypos);
                 GridRegion info = m_GridService.GetRegionByPosition(scopeID, (int)xpos, (int)ypos);
                 if (info != null) // just to be sure
                 {

OpenSim/Services/Connectors/Neighbour/NeighbourServicesConnector.cs

@@ -69,7 +69,7 @@ namespace OpenSim.Services.Connectors
         public virtual GridRegion HelloNeighbour(ulong regionHandle, RegionInfo thisRegion)
         {
             uint x = 0, y = 0;
-            Utils.LongToUInts(regionHandle, out x, out y);
+            Util.RegionHandleToWorldLoc(regionHandle, out x, out y);
             GridRegion regInfo = m_GridService.GetRegionByPosition(thisRegion.ScopeID, (int)x, (int)y);
             if ((regInfo != null) &&
                 // Don't remote-call this instance; that's a startup hickup

OpenSim/Services/GridService/GridService.cs

@@ -347,6 +347,11 @@ namespace OpenSim.Services.GridService
             return null;
         }
 
+        // Get a region given its base coordinates.
+        // NOTE: this is NOT 'get a region by some point in the region'. The coordinate MUST
+        //     be the base coordinate of the region.
+        // The snapping is technically unnecessary but is harmless because regions are always
+        //     multiples of the legacy region size (256).
         public GridRegion GetRegionByPosition(UUID scopeID, int x, int y)
         {
             int snapX = (int)(x / Constants.RegionSize) * (int)Constants.RegionSize;