Henri Beauchamp: use http map if possible. Fixes broken map in SL + http map possible for OS

11 files changed, 169 insertions, 56 deletions

diff --git a/linden/indra/newview/app_settings/settings.xml b/linden/indra/newview/app_settings/settings.xml
index 11220ed..9550a11 100644
--- a/linden/indra/newview/app_settings/settings.xml
+++ b/linden/indra/newview/app_settings/settings.xml
@@ -7404,6 +7404,28 @@
       <key>Value</key>
       <real>20.0</real>
     </map>
+    <key>MapServerURL</key>
+    <map>
+      <key>Comment</key>
+      <string>World map URL template for locating map tiles</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>String</string>
+      <key>Value</key>
+      <string>http://map.secondlife.com.s3.amazonaws.com/</string>
+    </map>
+    <key>UseWebMapTiles</key>
+    <map>
+      <key>Comment</key>
+      <string>Use web map tiles whenever possible</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>1</integer>
+    </map>
     <key>MapOverlayIndex</key>
     <map>
       <key>Comment</key>
diff --git a/linden/indra/newview/llfloaterworldmap.cpp b/linden/indra/newview/llfloaterworldmap.cpp
index 4f678c5..781cf4d 100644
--- a/linden/indra/newview/llfloaterworldmap.cpp
+++ b/linden/indra/newview/llfloaterworldmap.cpp
@@ -247,8 +247,8 @@ BOOL LLFloaterWorldMap::postBuild()
         childSetAction("Clear", onClearBtn, this);
         childSetAction("copy_slurl", onCopySLURL, this);
 
-        mCurZoomVal = log(gMapScale)/log(2.f);
-        childSetValue("zoom slider", gMapScale);
+        mCurZoomVal = log(LLWorldMapView::sMapScale)/log(2.f);
+        childSetValue("zoom slider", LLWorldMapView::sMapScale);
 
         setDefaultBtn(NULL);
 
diff --git a/linden/indra/newview/llfloaterworldmap.h b/linden/indra/newview/llfloaterworldmap.h
index 2153921..83345ed 100644
--- a/linden/indra/newview/llfloaterworldmap.h
+++ b/linden/indra/newview/llfloaterworldmap.h
@@ -68,8 +68,6 @@ public:
         static void toggle(void*);
         static void hide(void*); 
 
-        static void addServer(const std::string& server);
-
         /*virtual*/ void reshape( S32 width, S32 height, BOOL called_from_parent = TRUE );
         /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
         /*virtual*/ BOOL handleScrollWheel(S32 x, S32 y, S32 clicks);
@@ -103,7 +101,6 @@ public:
         void                    clearLocationSelection(BOOL clear_ui = FALSE);
         void                    clearAvatarSelection(BOOL clear_ui = FALSE);
         void                    clearLandmarkSelection(BOOL clear_ui = FALSE);
-        void                    clearGridSelection(BOOL clear_ui = FALSE);
 
         // Adjust the maximally zoomed out limit of the zoom slider so you can
         // see the whole world, plus a little.
@@ -118,9 +115,8 @@ public:
 protected:
         static void             onPanBtn( void* userdata );
 
-        static void             onGridManager(void* data);
-
         static void             onGoHome(void* data);
+
         static void             onLandmarkComboPrearrange( LLUICtrl* ctrl, void* data );
         static void             onLandmarkComboCommit( LLUICtrl* ctrl, void* data );
 
@@ -162,14 +158,13 @@ protected:
         static void             onLocationCommit( void* userdata );
         static void             onCommitLocation( LLUICtrl* ctrl, void* userdata );
         static void             onCommitSearchResult( LLUICtrl* ctrl, void* userdata );
-        static void             onSelectServer(LLUICtrl*, void* userdata);
 
         void                    cacheLandmarkPosition();
 
 protected:
         LLTabContainer* mTabs;
 
-        // Sets gMapScale, in pixels per region
+        // Sets sMapScale, in pixels per region
         F32                                             mCurZoomVal;
         LLFrameTimer                    mZoomTimer;
 
diff --git a/linden/indra/newview/llmapresponders.cpp b/linden/indra/newview/llmapresponders.cpp
index 140f390..9d974f2 100644
--- a/linden/indra/newview/llmapresponders.cpp
+++ b/linden/indra/newview/llmapresponders.cpp
@@ -4,7 +4,7 @@
  *
  * $LicenseInfo:firstyear=2006&license=viewergpl$
  * 
- * Copyright (c) 2006-2009, Linden Research, Inc.
+ * Copyright (c) 2006-2010, Linden Research, Inc.
  * 
  * Second Life Viewer Source Code
  * The source code in this file ("Source Code") is provided by Linden Lab
@@ -57,6 +57,8 @@ void LLMapLayerResponder::result(const LLSD& result)
 
         LLWorldMap::getInstance()->mMapLayers[agent_flags].clear();
 
+        bool use_web_map_tiles = LLWorldMap::useWebMapTiles();
+
         LLSD::array_const_iterator iter;
         BOOL adjust = FALSE;
         for(iter = result["LayerData"].beginArray(); iter != result["LayerData"].endArray(); ++iter)
@@ -65,16 +67,24 @@ void LLMapLayerResponder::result(const LLSD& result)
                 
                 LLWorldMapLayer new_layer;
                 new_layer.LayerDefined = TRUE;
-                new_layer.LayerImageID = layer_data["ImageID"];
-                new_layer.LayerImage = gImageList.getImage(new_layer.LayerImageID, MIPMAP_TRUE, FALSE);
-                gGL.getTexUnit(0)->bind(new_layer.LayerImage.get());
-                new_layer.LayerImage->setAddressMode(LLTexUnit::TAM_CLAMP);
                 
                 new_layer.LayerExtents.mLeft = layer_data["Left"];
                 new_layer.LayerExtents.mRight = layer_data["Right"];
                 new_layer.LayerExtents.mBottom = layer_data["Bottom"];
                 new_layer.LayerExtents.mTop = layer_data["Top"];
 
+                new_layer.LayerImageID = layer_data["ImageID"];
+//              if (use_web_map_tiles)
+//              {
+//                      new_layer.LayerImage = LLWorldMap::loadObjectsTile((U32)new_layer.LayerExtents.mLeft, (U32)new_layer.LayerExtents.mBottom); // no good... Maybe using of level 2 and higher web maps ?
+//              }
+//              else
+//              {
+                        new_layer.LayerImage = gImageList.getImage(new_layer.LayerImageID, MIPMAP_TRUE, FALSE);
+//              }
+                gGL.getTexUnit(0)->bind(new_layer.LayerImage.get());
+                new_layer.LayerImage->setAddressMode(LLTexUnit::TAM_CLAMP);
+
                 F32 x_meters = F32(new_layer.LayerExtents.mLeft*REGION_WIDTH_UNITS);
                 F32 y_meters = F32(new_layer.LayerExtents.mBottom*REGION_WIDTH_UNITS);
                 adjust = LLWorldMap::getInstance()->extendAABB(U32(x_meters), U32(y_meters), 
@@ -163,7 +173,14 @@ void LLMapLayerResponder::result(const LLSD& result)
                                 siminfo->mRegionFlags = region_flags;
                                 siminfo->mWaterHeight = (F32) water_height;
                                 siminfo->mMapImageID[agent_flags] = image_id;
-                                siminfo->mCurrentImage = gImageList.getImage(siminfo->mMapImageID[LLWorldMap::getInstance()->mCurrentMap], MIPMAP_TRUE, FALSE);
+                                if (use_web_map_tiles)
+                                {
+                                        siminfo->mCurrentImage = LLWorldMap::loadObjectsTile((U32)x_regions, (U32)y_regions);
+                                }
+                                else
+                                {
+                                        siminfo->mCurrentImage = gImageList.getImage(siminfo->mMapImageID[LLWorldMap::getInstance()->mCurrentMap], MIPMAP_TRUE, FALSE);
+                                }
                                 siminfo->mCurrentImage->setAddressMode(LLTexUnit::TAM_CLAMP);
                                 gGL.getTexUnit(0)->bind(siminfo->mCurrentImage.get());
                         
diff --git a/linden/indra/newview/llmapresponders.h b/linden/indra/newview/llmapresponders.h
index 8fb1fb0..b6fb8e5 100644
--- a/linden/indra/newview/llmapresponders.h
+++ b/linden/indra/newview/llmapresponders.h
@@ -4,7 +4,7 @@
  *
  * $LicenseInfo:firstyear=2006&license=viewergpl$
  * 
- * Copyright (c) 2006-2009, Linden Research, Inc.
+ * Copyright (c) 2006-2010, Linden Research, Inc.
  * 
  * Second Life Viewer Source Code
  * The source code in this file ("Source Code") is provided by Linden Lab
diff --git a/linden/indra/newview/llstartup.cpp b/linden/indra/newview/llstartup.cpp
index 606262f..4fd4daa 100644
--- a/linden/indra/newview/llstartup.cpp
+++ b/linden/indra/newview/llstartup.cpp
@@ -1127,6 +1127,7 @@ bool idle_startup()
                 requested_options.push_back("buddy-list");
                 requested_options.push_back("ui-config");
 #endif
+                requested_options.push_back("map-server-url");
                 requested_options.push_back("tutorial_setting");
                 requested_options.push_back("login-flags");
                 requested_options.push_back("global-textures");
@@ -1769,7 +1770,15 @@ bool idle_startup()
                                 LLStartUp::setShouldAutoLogin(false);
                                 show_connect_box = true;
                         }
-                        
+
+                        std::string map_server_url = LLUserAuth::getInstance()->getResponse("map-server-url");
+                        if(!map_server_url.empty())
+                        {
+                                gSavedSettings.setString("MapServerURL", map_server_url);
+                                //llwarns << "MapServerURL" << map_server_url << llendl;
+                        }
+                        // else llwarns << "MapServerURL empty"<< llendl;
+
                         // Pass the user information to the voice chat server interface.
                         gVoiceClient->userAuthorized(firstname, lastname, gAgentID);
                 }
diff --git a/linden/indra/newview/llviewermenu.cpp b/linden/indra/newview/llviewermenu.cpp
index e37f33e..fd6e842 100644
--- a/linden/indra/newview/llviewermenu.cpp
+++ b/linden/indra/newview/llviewermenu.cpp
@@ -844,6 +844,9 @@ void init_client_menu(LLMenuGL* menu)
 
         menu->append(new LLMenuItemCallGL("Clear Group Cache", 
                                                                           LLGroupMgr::debugClearAllGroups));
+
+        menu->append(new LLMenuItemCheckGL("Use Web Map Tiles", menu_toggle_control, NULL, menu_check_control, (void*)"UseWebMapTiles"));
+
         menu->appendSeparator();
 
         sub_menu = new LLMenuGL("Rendering");
diff --git a/linden/indra/newview/llworldmap.cpp b/linden/indra/newview/llworldmap.cpp
index 908cd87..c6242f6 100644
--- a/linden/indra/newview/llworldmap.cpp
+++ b/linden/indra/newview/llworldmap.cpp
@@ -37,6 +37,7 @@
 #include "llregionhandle.h"
 #include "message.h"
 
+
 #include "llappviewer.h"        // for gPacificDaylightTime
 #include "llagent.h"
 #include "llmapresponders.h"
@@ -46,9 +47,8 @@
 #include "llviewerimagelist.h"
 #include "llviewerregion.h"
 #include "llregionflags.h"
-
-#include "hippoGridManager.h"
-
+ #include "hippoGridManager.h"
+bool LLWorldMap::sGotMapURL =  false;
 const F32 REQUEST_ITEMS_TIMER =  10.f * 60.f; // 10 minutes
 
 // For DEV-17507, do lazy image loading in llworldmapview.cpp instead,
@@ -86,6 +86,11 @@ LLSimInfo::LLSimInfo()
 }
 
 
+LLVector3d LLSimInfo::getGlobalOrigin() const
+{
+        return from_region_handle(mHandle);
+}
+
 LLVector3d LLSimInfo::getGlobalPos(LLVector3 local_pos) const
 {
         LLVector3d pos = from_region_handle(mHandle);
@@ -514,16 +519,13 @@ void LLWorldMap::processMapLayerReply(LLMessageSystem* msg, void**)
 
         LLWorldMap::getInstance()->mMapLayers[agent_flags].clear();
 
+//      bool use_web_map_tiles = useWebMapTiles();
         BOOL adjust = FALSE;
         for (S32 block=0; block<num_blocks; ++block)
         {
                 LLWorldMapLayer new_layer;
                 new_layer.LayerDefined = TRUE;
                 msg->getUUIDFast(_PREHASH_LayerData, _PREHASH_ImageID, new_layer.LayerImageID, block);
-                new_layer.LayerImage = gImageList.getImage(new_layer.LayerImageID, MIPMAP_TRUE, FALSE);
-
-                gGL.getTexUnit(0)->bind(new_layer.LayerImage.get());
-                new_layer.LayerImage->setAddressMode(LLTexUnit::TAM_CLAMP);
                 
                 U32 left, right, top, bottom;
                 msg->getU32Fast(_PREHASH_LayerData, _PREHASH_Left, left, block);
@@ -531,6 +533,18 @@ void LLWorldMap::processMapLayerReply(LLMessageSystem* msg, void**)
                 msg->getU32Fast(_PREHASH_LayerData, _PREHASH_Top, top, block);
                 msg->getU32Fast(_PREHASH_LayerData, _PREHASH_Bottom, bottom, block);
 
+//              if (use_web_map_tiles)
+//              {
+//                      new_layer.LayerImage = loadObjectsTile(left, bottom); // no good... Maybe using of level 2 and higher web maps ?
+//              }
+//              else
+//              {
+                        new_layer.LayerImage = gImageList.getImage(new_layer.LayerImageID, MIPMAP_TRUE, FALSE);
+//              }
+
+                gGL.getTexUnit(0)->bind(new_layer.LayerImage.get());
+                new_layer.LayerImage->setAddressMode(LLTexUnit::TAM_CLAMP);
+
                 new_layer.LayerExtents.mLeft = left;
                 new_layer.LayerExtents.mRight = right;
                 new_layer.LayerExtents.mBottom = bottom;
@@ -550,6 +564,26 @@ void LLWorldMap::processMapLayerReply(LLMessageSystem* msg, void**)
 }
 
 // public static
+bool LLWorldMap::useWebMapTiles()
+{
+        return gSavedSettings.getBOOL("UseWebMapTiles") &&
+                   (( gHippoGridManager->getConnectedGrid()->isSecondLife() || sGotMapURL) && LLWorldMap::getInstance()->mCurrentMap == 0);
+}
+
+// public static
+LLPointer<LLViewerImage> LLWorldMap::loadObjectsTile(U32 grid_x, U32 grid_y)
+{
+        // Get the grid coordinates
+        std::string imageurl = gSavedSettings.getString("MapServerURL") + llformat("map-%d-%d-%d-objects.jpg", 1, grid_x, grid_y);
+
+        LLPointer<LLViewerImage> img = gImageList.getImageFromUrl(imageurl);
+        img->setBoostLevel(LLViewerImageBoostLevel::BOOST_MAP);
+
+        // Return the smart pointer
+        return img;
+}
+
+// public static
 void LLWorldMap::processMapBlockReply(LLMessageSystem* msg, void**)
 {
         U32 agent_flags;
@@ -565,6 +599,9 @@ void LLWorldMap::processMapBlockReply(LLMessageSystem* msg, void**)
 
         bool found_null_sim = false;
 
+#ifdef IMMEDIATE_IMAGE_LOAD
+        bool use_web_map_tiles = useWebMapTiles();
+#endif
         BOOL adjust = FALSE;
         for (S32 block=0; block<num_blocks; ++block)
         {
@@ -635,7 +672,14 @@ void LLWorldMap::processMapBlockReply(LLMessageSystem* msg, void**)
                         siminfo->mMapImageID[agent_flags] = image_id;
 
 #ifdef IMMEDIATE_IMAGE_LOAD
-                        siminfo->mCurrentImage = gImageList.getImage(siminfo->mMapImageID[LLWorldMap::getInstance()->mCurrentMap], MIPMAP_TRUE, FALSE);
+                        if (use_web_map_tiles)
+                        {
+                                siminfo->mCurrentImage = loadObjectsTile((U32)x_regions, (U32)y_regions);
+                        }
+                        else
+                        {
+                                siminfo->mCurrentImage = gImageList.getImage(siminfo->mMapImageID[LLWorldMap::getInstance()->mCurrentMap], MIPMAP_TRUE, FALSE);
+                        }
                         gGL.getTexUnit(0)->bind(siminfo->mCurrentImage.get());
                         siminfo->mCurrentImage->setAddressMode(LLTexUnit::TAM_CLAMP);
 #endif
diff --git a/linden/indra/newview/llworldmap.h b/linden/indra/newview/llworldmap.h
index 6ce66ff..b7089f3 100644
--- a/linden/indra/newview/llworldmap.h
+++ b/linden/indra/newview/llworldmap.h
@@ -76,6 +76,8 @@ public:
         LLSimInfo();
 
         LLVector3d getGlobalPos(LLVector3 local_pos) const;
+        // Get the world coordinates of the SW corner of that region
+        LLVector3d getGlobalOrigin() const;
 
 public:
         U64 mHandle;
@@ -164,6 +166,10 @@ public:
         static void processMapBlockReply(LLMessageSystem*, void**);
         static void processMapItemReply(LLMessageSystem*, void**);
 
+        static void gotMapServerURL(bool flag) { sGotMapURL = flag; }
+        static bool useWebMapTiles();
+        static LLPointer<LLViewerImage> loadObjectsTile(U32 grid_x, U32 grid_y);
+
         void dump();
 
         // Extend the bounding box of the list of simulators. Returns true
@@ -226,6 +232,8 @@ private:
         std::string mSLURL;
         url_callback_t mSLURLCallback;
         bool mSLURLTeleport;
+
+        static bool sGotMapURL;
 };
 
 #endif
diff --git a/linden/indra/newview/llworldmapview.cpp b/linden/indra/newview/llworldmapview.cpp
index d8e5b3d..e12bd08 100644
--- a/linden/indra/newview/llworldmapview.cpp
+++ b/linden/indra/newview/llworldmapview.cpp
@@ -50,7 +50,6 @@
 #include "llfloatermap.h"
 #include "llfloaterworldmap.h"
 #include "llfocusmgr.h"
-//#include "llmutelist.h" info not being sent
 #include "lltextbox.h"
 #include "lltextureview.h"
 #include "lltracker.h"
@@ -103,6 +102,7 @@ F32 LLWorldMapView::sTargetPanY = 0.f;
 S32 LLWorldMapView::sTrackingArrowX = 0;
 S32 LLWorldMapView::sTrackingArrowY = 0;
 F32 LLWorldMapView::sPixelsPerMeter = 1.f;
+F32 LLWorldMapView::sMapScale = 128.f;
 F32 CONE_SIZE = 0.6f;
 
 std::map<std::string,std::string> LLWorldMapView::sStringsMap;
@@ -179,7 +179,7 @@ LLWorldMapView::LLWorldMapView(const std::string& name, const LLRect& rect )
         mMouseDownY( 0 ),
         mSelectIDStart(0)
 {
-        sPixelsPerMeter = gMapScale / REGION_WIDTH_METERS;
+        sPixelsPerMeter = sMapScale / REGION_WIDTH_METERS;
         clearLastClick();
 
         const S32 DIR_WIDTH = 10;
@@ -240,14 +240,14 @@ void LLWorldMapView::cleanupTextures()
 // static
 void LLWorldMapView::setScale( F32 scale )
 {
-        if (scale != gMapScale)
+        if (scale != sMapScale)
         {
-                F32 old_scale = gMapScale;
+                F32 old_scale = sMapScale;
 
-                gMapScale = scale;
-                if (gMapScale == 0.f)
+                sMapScale = scale;
+                if (sMapScale == 0.f)
                 {
-                        gMapScale = 0.1f;
+                        sMapScale = 0.1f;
                 }
 
                 F32 ratio = (scale / old_scale);
@@ -256,7 +256,7 @@ void LLWorldMapView::setScale( F32 scale )
                 sTargetPanX = sPanX;
                 sTargetPanY = sPanY;
 
-                sPixelsPerMeter = gMapScale / REGION_WIDTH_METERS;
+                sPixelsPerMeter = sMapScale / REGION_WIDTH_METERS;
         }
 }
 
@@ -354,11 +354,11 @@ void LLWorldMapView::draw()
 
                 // Find x and y position relative to camera's center.
                 LLVector3d rel_region_pos = origin_global - camera_global;
-                F32 relative_x = (rel_region_pos.mdV[0] / REGION_WIDTH_METERS) * gMapScale;
-                F32 relative_y = (rel_region_pos.mdV[1] / REGION_WIDTH_METERS) * gMapScale;
+                F32 relative_x = (rel_region_pos.mdV[0] / REGION_WIDTH_METERS) * sMapScale;
+                F32 relative_y = (rel_region_pos.mdV[1] / REGION_WIDTH_METERS) * sMapScale;
 
-                F32 pix_width = gMapScale*(layer->LayerExtents.getWidth() + 1);
-                F32 pix_height = gMapScale*(layer->LayerExtents.getHeight() + 1);
+                F32 pix_width = sMapScale*(layer->LayerExtents.getWidth() + 1);
+                F32 pix_height = sMapScale*(layer->LayerExtents.getHeight() + 1);
 
                 // When the view isn't panned, 0,0 = center of rectangle
                 F32 bottom =    sPanY + half_height + relative_y;
@@ -439,6 +439,8 @@ void LLWorldMapView::draw()
         const S32 MIN_REQUEST_PER_TICK = 1;
         S32 textures_requested_this_tick = 0;
 
+        bool use_web_map_tiles = LLWorldMap::useWebMapTiles();
+
         for (LLWorldMap::sim_info_map_t::iterator it = LLWorldMap::getInstance()->mSimInfoMap.begin();
                  it != LLWorldMap::getInstance()->mSimInfoMap.end(); ++it)
         {
@@ -448,7 +450,7 @@ void LLWorldMapView::draw()
                 LLViewerImage* simimage = info->mCurrentImage;
                 LLViewerImage* overlayimage = info->mOverlayImage;
 
-                if (gMapScale < SIM_MAP_SCALE)
+                if (sMapScale < SIM_MAP_SCALE)
                 {
                         if (simimage != NULL) simimage->setBoostLevel(0);
                         if (overlayimage != NULL) overlayimage->setBoostLevel(0);
@@ -460,14 +462,14 @@ void LLWorldMapView::draw()
 
                 // Find x and y position relative to camera's center.
                 LLVector3d rel_region_pos = origin_global - camera_global;
-                F32 relative_x = (rel_region_pos.mdV[0] / REGION_WIDTH_METERS) * gMapScale;
-                F32 relative_y = (rel_region_pos.mdV[1] / REGION_WIDTH_METERS) * gMapScale;
+                F32 relative_x = (rel_region_pos.mdV[0] / REGION_WIDTH_METERS) * sMapScale;
+                F32 relative_y = (rel_region_pos.mdV[1] / REGION_WIDTH_METERS) * sMapScale;
 
                 // When the view isn't panned, 0,0 = center of rectangle
                 F32 bottom =    sPanY + half_height + relative_y;
                 F32 left =              sPanX + half_width + relative_x;
-                F32 top =               bottom + gMapScale ;
-                F32 right =             left + gMapScale ;
+                F32 top =               bottom + sMapScale ;
+                F32 right =             left + sMapScale ;
 
                 // Switch to world map texture (if available for this region) if either:
                 // 1. Tiles are zoomed out small enough, or
@@ -478,10 +480,10 @@ void LLWorldMapView::draw()
                         map_scale_cutoff = SIM_NULL_MAP_SCALE;
                 }
 
-                info->mShowAgentLocations = (gMapScale >= SIM_MAP_AGENT_SCALE);
+                info->mShowAgentLocations = (sMapScale >= SIM_MAP_AGENT_SCALE);
 
                 bool sim_visible =
-                        (gMapScale >= map_scale_cutoff) &&
+                        (sMapScale >= map_scale_cutoff) &&
                         (simimage != NULL) &&
                         (simimage->getHasGLTexture());
 
@@ -521,7 +523,15 @@ void LLWorldMapView::draw()
                                  (textures_requested_this_tick < MAX_REQUEST_PER_TICK)))
                         {
                                 textures_requested_this_tick++;
-                                info->mCurrentImage = gImageList.getImage(info->mMapImageID[LLWorldMap::getInstance()->mCurrentMap], MIPMAP_TRUE, FALSE);
+                                if (use_web_map_tiles)
+                                {
+                                        LLVector3d region_pos = info->getGlobalOrigin();
+                                        info->mCurrentImage = LLWorldMap::loadObjectsTile((U32)(region_pos.mdV[VX] / REGION_WIDTH_UNITS), (U32)(region_pos.mdV[VY] / REGION_WIDTH_UNITS));
+                                }
+                                else
+                                {
+                                        info->mCurrentImage = gImageList.getImage(info->mMapImageID[LLWorldMap::getInstance()->mCurrentMap], MIPMAP_TRUE, FALSE);
+                                }
                 info->mCurrentImage->setAddressMode(LLTexUnit::TAM_CLAMP);
                                 simimage = info->mCurrentImage;
                                 gGL.getTexUnit(0)->bind(simimage);
@@ -554,7 +564,7 @@ void LLWorldMapView::draw()
                 center_global.mdV[VX] += 128.0;
                 center_global.mdV[VY] += 128.0;
 
-                S32 draw_size = llround(gMapScale);
+                S32 draw_size = llround(sMapScale);
                 if (simimage != NULL)
                 {
                         simimage->setBoostLevel(LLViewerImageBoostLevel::BOOST_MAP);
@@ -670,10 +680,10 @@ void LLWorldMapView::draw()
                 LLFontGL* font = LLFontGL::getFontSansSerifSmall();
 
                 std::string mesg;
-                if (gMapScale < sThresholdA)
+                if (sMapScale < sThresholdA)
                 {
                 }
-                else if (gMapScale < sThresholdB)
+                else if (sMapScale < sThresholdB)
                 {
                         //      mesg = llformat( info->mAgents);
                 }
@@ -794,13 +804,13 @@ void LLWorldMapView::draw()
         gGL.setSceneBlendType(LLRender::BT_ALPHA);
 
         // Infohubs
-        if (gSavedSettings.getBOOL("MapShowInfohubs"))   //(gMapScale >= sThresholdB)
+        if (gSavedSettings.getBOOL("MapShowInfohubs"))   //(sMapScale >= sThresholdB)
         {
                 drawGenericItems(LLWorldMap::getInstance()->mInfohubs, sInfohubImage);
         }
 
         // Telehubs
-        if (gSavedSettings.getBOOL("MapShowTelehubs"))   //(gMapScale >= sThresholdB)
+        if (gSavedSettings.getBOOL("MapShowTelehubs"))   //(sMapScale >= sThresholdB)
         {
                 drawGenericItems(LLWorldMap::getInstance()->mTelehubs, sTelehubImage);
         }
@@ -972,7 +982,7 @@ void LLWorldMapView::drawImageStack(const LLVector3d& global_pos, LLUIImagePtr i
 
 void LLWorldMapView::drawAgents()
 {
-        F32 agents_scale = (gMapScale * 0.9f) / 256.f;
+        F32 agents_scale = (sMapScale * 0.9f) / 256.f;
         
         LLColor4 avatar_color = gColors.getColor( "MapAvatar" );
         /*LLColor4 friend_color = gColors.getColor( "MapFriend" );
@@ -1112,7 +1122,7 @@ void LLWorldMapView::drawEvents()
 void LLWorldMapView::drawFrustum()
 {
         // Draw frustum
-        F32 meters_to_pixels = gMapScale/ REGION_WIDTH_METERS;
+        F32 meters_to_pixels = sMapScale/ REGION_WIDTH_METERS;
 
         F32 horiz_fov = LLViewerCamera::getInstance()->getView() * LLViewerCamera::getInstance()->getAspect();
         F32 far_clip_meters = LLViewerCamera::getInstance()->getFar();
@@ -1241,7 +1251,7 @@ LLVector3d LLWorldMapView::viewPosToGlobal( S32 x, S32 y )
 
         LLVector3 pos_local( (F32)x, (F32)y, 0.f );
 
-        pos_local *= ( REGION_WIDTH_METERS / gMapScale );
+        pos_local *= ( REGION_WIDTH_METERS / sMapScale );
         
         LLVector3d pos_global;
         pos_global.setVec( pos_local );
@@ -1875,7 +1885,7 @@ U32 LLWorldMapView::updateBlock(S32 block_x, S32 block_y)
 
 U32 LLWorldMapView::updateVisibleBlocks()
 {
-        if (gMapScale < SIM_MAP_SCALE)
+        if (sMapScale < SIM_MAP_SCALE)
         {
                 // We don't care what is loaded if we're zoomed out
                 return 0;
@@ -1883,7 +1893,7 @@ U32 LLWorldMapView::updateVisibleBlocks()
 
         LLVector3d camera_global = gAgent.getCameraPositionGlobal();
         
-        F32 pixels_per_region = gMapScale;
+        F32 pixels_per_region = sMapScale;
         const S32 width = getRect().getWidth();
         const S32 height = getRect().getHeight();
         // Convert pan to sim coordinates
diff --git a/linden/indra/newview/llworldmapview.h b/linden/indra/newview/llworldmapview.h
index 3245838..4814767 100644
--- a/linden/indra/newview/llworldmapview.h
+++ b/linden/indra/newview/llworldmapview.h
@@ -30,7 +30,10 @@
  * $/LicenseInfo$
  */
 
-// Global map of the world.
+// View of the global map of the world
+
+// The data (model) for the global map (a singleton, unique to the application instance) is 
+// in LLWorldMap and is typically accessed using LLWorldMap::getInstance()
 
 #ifndef LL_LLWORLDMAPVIEW_H
 #define LL_LLWORLDMAPVIEW_H
@@ -161,6 +164,8 @@ public:
         static F32              sThresholdB;
         static F32              sPixelsPerMeter;                // world meters to map pixels
 
+        static F32              sMapScale;                              // scale = size of a region in pixels
+
         BOOL                    mItemPicked;
 
         static F32              sPanX;          // in pixels