Clean fg_init.hxx

[flightgear.git] / src / Scenery / tilemgr.cxx

diff --git a/src/Scenery/tilemgr.cxx b/src/Scenery/tilemgr.cxx
index cc53e63aee027b60fdda958b29374c92516f0823..a7bbb388bf7bf32802caec5364b072d409b56bd3 100644 (file)
--- a/src/Scenery/tilemgr.cxx
+++ b/src/Scenery/tilemgr.cxx
@@ -32,8 +32,6 @@
 
 #include <simgear/constants.h>
 #include <simgear/debug/logstream.hxx>
-#include <simgear/math/polar3d.hxx>
-#include <simgear/math/sg_geodesy.hxx>
 #include <simgear/math/vector.hxx>
 #include <simgear/structure/exception.hxx>
 #include <simgear/scene/model/modellib.hxx>
@@ -238,13 +236,27 @@ void FGTileMgr::initialize_queue()
 osg::Node*
 FGTileMgr::loadTileModel(const string& modelPath, bool cacheModel)
 {
+    SGPath fullPath;
+    if (fgGetBool("/sim/paths/use-custom-scenery-data") == true) {
+        string_list sc = globals->get_fg_scenery();
+
+        for (string_list_iterator it = sc.begin(); it != sc.end(); ++it) {
+            SGPath tmpPath(*it);
+            tmpPath.append(modelPath);
+            if (tmpPath.exists()) {
+                fullPath = tmpPath;
+                break;
+            } 
+        }
+    } else {
+         fullPath.append(modelPath);
+    }
     osg::Node* result = 0;
     try {
         if(cacheModel)
             result =
-                SGModelLib::loadModel(modelPath, globals->get_props(),
+                SGModelLib::loadModel(fullPath.str(), globals->get_props(),
                                       new FGNasalModelData);
-
         else
             result=
                 SGModelLib::loadPagedModel(modelPath, globals->get_props(),
@@ -281,9 +293,7 @@ public:
                                  entry->getNode(),
                                  entry->get_inner_ring() ? 10.0f : 1.0f,
                                  _framestamp,
-#ifdef FGOSGPAGER25
                                  entry->getDatabaseRequest(),
-#endif
                                  _options);
         }
     }
@@ -315,17 +325,8 @@ void FGTileMgr::update_queues()
 // disk.
 int FGTileMgr::update( double visibility_meters )
 {
-    SGLocation *location = globals->get_current_view()->getSGLocation();
-    double lon = location->getLongitude_deg();
-    double lat = location->getLatitude_deg();
-    return update(SGGeod::fromDegM(lon, lat, 0), visibility_meters);
-}
-
-int FGTileMgr::update( SGLocation *location, double visibility_meters)
-{
-    double lon = location->getLongitude_deg();
-    double lat = location->getLatitude_deg();
-    return update(SGGeod::fromDegM(lon, lat, 0), visibility_meters);
+    SGVec3d viewPos = globals->get_current_view()->get_view_pos();
+    return update(SGGeod::fromCart(viewPos), visibility_meters);
 }
 
 int FGTileMgr::update( const SGGeod& location, double visibility_meters)
@@ -392,26 +393,26 @@ void FGTileMgr::prep_ssg_nodes(float vis) {
 }
 
 bool FGTileMgr::scenery_available(const SGGeod& position, double range_m)
-{
-    return scenery_available(position.getLatitudeDeg(),
-                             position.getLongitudeDeg(), range_m);
-}
-
-bool FGTileMgr::scenery_available(double lat, double lon, double range_m)
 {
   // sanity check (unfortunately needed!)
-  if ( lon <= -180.0 || lon >= 180.0 || lat <= -90.0 || lat >= 90.0 )
+  if (position.getLongitudeDeg() < -180 || position.getLongitudeDeg() > 180 ||
+      position.getLatitudeDeg() < -90 || position.getLatitudeDeg() > 90)
     return false;
   
-  SGBucket bucket(lon, lat);
+  SGBucket bucket(position);
   TileEntry *te = tile_cache.get_tile(bucket);
   if (!te || !te->is_loaded())
     return false;
 
+  SGVec3d cartPos = SGVec3d::fromGeod(position);
+
   // Traverse all tiles required to be there for the given visibility.
   // This uses exactly the same algorithm like the tile scheduler.
   double tile_width = bucket.get_width_m();
   double tile_height = bucket.get_height_m();
+  double tile_r = 0.5*sqrt(tile_width*tile_width + tile_height*tile_height);
+  double max_dist = tile_r + range_m;
+  double max_dist2 = max_dist*max_dist;
   
   int xrange = (int)fabs(range_m / tile_width) + 1;
   int yrange = (int)fabs(range_m / tile_height) + 1;
@@ -420,7 +421,11 @@ bool FGTileMgr::scenery_available(double lat, double lon, double range_m)
     for ( int y = -yrange; y <= yrange; ++y ) {
       // We have already checked for the center tile.
       if ( x != 0 || y != 0 ) {
-        SGBucket b = sgBucketOffset( lon, lat, x, y );
+        SGBucket b = sgBucketOffset( position.getLongitudeDeg(),
+                                     position.getLatitudeDeg(), x, y );
+        // Do not ask if it is just the next tile but way out of range.
+        if (max_dist2 < distSqr(cartPos, SGVec3d::fromGeod(b.get_center())))
+          continue;
         TileEntry *te = tile_cache.get_tile(b);
         if (!te || !te->is_loaded())
           return false;