#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>
entry->getNode(),
entry->get_inner_ring() ? 10.0f : 1.0f,
_framestamp,
-#ifdef FGOSGPAGER25
entry->getDatabaseRequest(),
-#endif
_options);
}
}
}
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;
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;