From c0ad5ee81da3d24153bfc9769759ac1981d604ea Mon Sep 17 00:00:00 2001
From: Robert Adams
Date: Sun, 29 Mar 2015 17:21:19 -0700
Subject: varregion: update MapImageServiceModule to upload multiple map tiles
 for large regions.

---
 .../MapImage/MapImageServiceModule.cs              | 82 +++++++++++++++++-----
 1 file changed, 65 insertions(+), 17 deletions(-)

(limited to 'OpenSim')

diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/MapImage/MapImageServiceModule.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/MapImage/MapImageServiceModule.cs
index 96182cd..da74f30 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/MapImage/MapImageServiceModule.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/MapImage/MapImageServiceModule.cs
@@ -57,6 +57,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.MapImage
     {
         private static readonly ILog m_log =
             LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        private static string LogHeader = "[MAP IMAGE SERVICE MODULE]";
 
         private bool m_enabled = false;
         private IMapImageService m_MapService;
@@ -192,47 +193,94 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.MapImage
             m_lastrefresh = Util.EnvironmentTickCount();
         }
 
+        public void UploadMapTile(IScene scene, Bitmap mapTile)
+        {
+            m_log.DebugFormat("{0} Upload maptile for {1}", LogHeader, scene.Name);
+
+            // mapTile.Save(   // DEBUG DEBUG
+            //     String.Format("maptiles/raw-{0}-{1}-{2}.jpg", regionName, scene.RegionInfo.RegionLocX, scene.RegionInfo.RegionLocY),
+            //     ImageFormat.Jpeg);
+            // If the region/maptile is legacy sized, just upload the one tile like it has always been done
+            if (mapTile.Width == Constants.RegionSize && mapTile.Height == Constants.RegionSize)
+            {
+                ConvertAndUploadMaptile(mapTile, scene,
+                                        scene.RegionInfo.RegionLocX, scene.RegionInfo.RegionLocY);
+            }
+            else
+            {
+                // For larger regions (varregion) we must cut the region image into legacy sized
+                //    pieces since that is how the maptile system works.
+                // Note the assumption that varregions are always a multiple of legacy size.
+                for (uint xx = 0; xx < mapTile.Width; xx += Constants.RegionSize)
+                {
+                    for (uint yy = 0; yy < mapTile.Height; yy += Constants.RegionSize)
+                    {
+                        // Images are addressed from the upper left corner so have to do funny
+                        //     math to pick out the sub-tile since regions are numbered from
+                        //     the lower left.
+                        Rectangle rect = new Rectangle(
+                            (int)xx,
+                            mapTile.Height - (int)yy - (int)Constants.RegionSize,
+                            (int)Constants.RegionSize, (int)Constants.RegionSize);
+                        using (Bitmap subMapTile = mapTile.Clone(rect, mapTile.PixelFormat))
+                        {
+                            ConvertAndUploadMaptile(subMapTile, scene,
+                                                    scene.RegionInfo.RegionLocX + (xx / Constants.RegionSize),
+                                                    scene.RegionInfo.RegionLocY + (yy / Constants.RegionSize)
+                                                    );
+                        }
+                    }
+                }
+            }
+        }
+
         ///<summary>
         ///
         ///</summary>
         public void UploadMapTile(IScene scene)
         {
-            m_log.DebugFormat("[MAP IMAGE SERVICE MODULE]: upload maptile for {0}", scene.RegionInfo.RegionName);
+            m_log.DebugFormat("{0}: upload maptile for {1}", LogHeader, scene.RegionInfo.RegionName);
 
             // Create a JPG map tile and upload it to the AddMapTile API
-            byte[] jpgData = Utils.EmptyBytes;
             IMapImageGenerator tileGenerator = scene.RequestModuleInterface<IMapImageGenerator>();
             if (tileGenerator == null)
             {
-                m_log.Warn("[MAP IMAGE SERVICE MODULE]: Cannot upload PNG map tile without an ImageGenerator");
+                m_log.WarnFormat("{0} Cannot upload map tile without an ImageGenerator", LogHeader);
                 return;
             }
 
-            using (Image mapTile = tileGenerator.CreateMapTile())
+            using (Bitmap mapTile = tileGenerator.CreateMapTile())
             {
                 // XXX: The MapImageModule will return a null if the user has chosen not to create map tiles and there
                 // is no static map tile.
                 if (mapTile == null)
                     return;
 
-                using (MemoryStream stream = new MemoryStream())
-                {
-                    mapTile.Save(stream, ImageFormat.Jpeg);
-                    jpgData = stream.ToArray();
-                }
+                UploadMapTile(scene, mapTile);
             }
+        }
+
+        private void ConvertAndUploadMaptile(Image tileImage, IScene scene, uint locX, uint locY)
+        {
+            byte[] jpgData = Utils.EmptyBytes;
 
-            if (jpgData == Utils.EmptyBytes)
+            using (MemoryStream stream = new MemoryStream())
             {
-                m_log.WarnFormat("[MAP IMAGE SERVICE MODULE]: Tile image generation failed");
-                return;
+                tileImage.Save(stream, ImageFormat.Jpeg);
+                jpgData = stream.ToArray();
             }
-
-            string reason = string.Empty;
-            if (!m_MapService.AddMapTile((int)scene.RegionInfo.RegionLocX, (int)scene.RegionInfo.RegionLocY, jpgData, scene.RegionInfo.ScopeID, out reason))
+            if (jpgData != Utils.EmptyBytes)
+            {
+                string reason = string.Empty;
+                if (!m_MapService.AddMapTile((int)locX, (int)locY, jpgData, scene.RegionInfo.ScopeID, out reason))
+                {
+                    m_log.DebugFormat("{0} Unable to upload tile image for {1} at {2}-{3}: {4}", LogHeader,
+                        scene.RegionInfo.RegionName, locX, locY, reason);
+                }
+            }
+            else
             {
-                m_log.DebugFormat("[MAP IMAGE SERVICE MODULE]: Unable to upload tile image for {0} at {1}-{2}: {3}",
-                    scene.RegionInfo.RegionName, scene.RegionInfo.RegionLocX, scene.RegionInfo.RegionLocY, reason);
+                m_log.WarnFormat("{0} Tile image generation failed for region {1}", LogHeader, scene.RegionInfo.RegionName);
             }
         }
     }
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