<File
RelativePath="..\..\simgear\scene\tgdb\userdata.hxx">
</File>
+ <File
+ RelativePath="..\..\simgear\scene\tgdb\TileCache.cxx">
+ </File>
+ <File
+ RelativePath="..\..\simgear\scene\tgdb\TileCache.hxx">
+ </File>
+ <File
+ RelativePath="..\..\simgear\scene\tgdb\TileEntry.cxx">
+ </File>
+ <File
+ RelativePath="..\..\simgear\scene\tgdb\TileEntry.hxx">
+ </File>
+ <File
+ RelativePath="..\..\simgear\scene\tgdb\ReaderWriterSTG.cxx">
+ </File>
</Filter>
<Filter
Name="Lib_sgthread"
texture = dynamic_cast<Texture*>(refAttr.first.get());
if (!texture)
return;
-
+
texture->setDataVariance(Object::STATIC);
}
// STATIC so that textures will be globally shared.
SGTexDataVarianceVisitor dataVarianceVisitor;
node->accept(dataVarianceVisitor);
-
+
SGTexCompressionVisitor texComp;
node->accept(texComp);
return node;
namespace
{
ModelRegistryCallbackProxy<ACCallback> g_acRegister("ac");
-}
+}
throw sg_io_exception("Failed to load 3D model",
sg_location(modelpath.str()));
}
+ model->setName(modelpath.str());
bool needTransform=false;
// Set up the alignment node if needed
obj.hxx \
pt_lights.hxx \
userdata.hxx \
+ ReaderWriterSTG.hxx \
SGOceanTile.hxx \
SGVasiDrawable.hxx \
SGDirectionalLightBin.hxx \
SGTriangleBin.hxx \
SGVertexArrayBin.hxx \
GroundLightManager.hxx \
- ShaderGeometry.hxx
+ ShaderGeometry.hxx \
+ TileCache.hxx \
+ TileEntry.hxx
libsgtgdb_a_SOURCES = \
apt_signs.cxx \
obj.cxx \
pt_lights.cxx \
userdata.cxx \
+ ReaderWriterSTG.cxx \
SGOceanTile.cxx \
SGReaderWriterBTG.cxx \
SGVasiDrawable.cxx \
GroundLightManager.cxx \
ShaderGeometry.cxx \
+ TileCache.cxx \
+ TileEntry.cxx \
TreeBin.cxx
INCLUDES = -I$(top_srcdir)
--- /dev/null
+// tileentry.cxx -- routines to handle a scenery tile
+//
+// Written by Curtis Olson, started May 1998.
+//
+// Copyright (C) 1998 - 2001 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+//
+
+#include <simgear/scene/model/ModelRegistry.hxx>
+
+#include <osgDB/Registry>
+#include <osgDB/FileNameUtils>
+
+#include "TileEntry.hxx"
+#include "ReaderWriterSTG.hxx"
+
+using namespace simgear;
+
+const char* ReaderWriterSTG::className() const
+{
+ return "STG Database reader";
+}
+
+bool ReaderWriterSTG::acceptsExtension(const std::string& extension) const
+{
+ return (osgDB::equalCaseInsensitive(extension, "gz")
+ || osgDB::equalCaseInsensitive(extension, "stg"));
+}
+
+//#define SLOW_PAGER 1
+#ifdef SLOW_PAGER
+#include <unistd.h>
+#endif
+
+osgDB::ReaderWriter::ReadResult
+ReaderWriterSTG::readNode(const std::string& fileName,
+ const osgDB::ReaderWriter::Options* options) const
+{
+ std::string ext = osgDB::getLowerCaseFileExtension(fileName);
+ if(!acceptsExtension(ext))
+ return ReadResult::FILE_NOT_HANDLED;
+ std::string stgFileName;
+ if (osgDB::equalCaseInsensitive(ext, "gz")) {
+ stgFileName = osgDB::getNameLessExtension(fileName);
+ if (!acceptsExtension(
+ osgDB::getLowerCaseFileExtension(stgFileName))) {
+ return ReadResult::FILE_NOT_HANDLED;
+ }
+ } else {
+ stgFileName = fileName;
+ }
+ osg::Node* result
+ = TileEntry::loadTileByName(osgDB::getNameLessExtension(stgFileName),
+ options);
+ // For debugging race conditions
+#ifdef SLOW_PAGER
+ sleep(5);
+#endif
+ if (result)
+ return result;
+ else
+ return ReadResult::FILE_NOT_HANDLED;
+}
+
--- /dev/null
+// tileentry.hxx -- routines to handle an individual scenery tile
+//
+// Written by Curtis Olson, started May 1998.
+//
+// Copyright (C) 1998 - 2001 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+
+#ifndef _READERWRITERSTG_HXX
+#define _READERWRITERSTG_HXX
+
+#include <osgDB/ReaderWriter>
+
+namespace simgear {
+
+class ReaderWriterSTG : public osgDB::ReaderWriter {
+public:
+ virtual const char* className() const;
+
+ virtual bool acceptsExtension(const std::string& extension) const;
+
+ virtual ReadResult readNode(const std::string& fileName,
+ const osgDB::ReaderWriter::Options* options)
+ const;
+};
+
+}
+#endif // _READERWRITERSTG_HXX
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
#ifndef SGREADERWRITERBTGOPTIONS_HXX
-#define SGREADERWRITERBTGOPTIONS_HXX 1
+#define SGREADERWRITERBTGOPTIONS_HXX
#include <osgDB/ReaderWriter>
#include <simgear/scene/tgdb/obj.hxx>
_useRandomObjects(false),
_useRandomVegetation(false)
{}
-
+
SGReaderWriterBTGOptions(const SGReaderWriterBTGOptions& options,
const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
osgDB::ReaderWriter::Options(options, copyop),
--- /dev/null
+// newcache.cxx -- routines to handle scenery tile caching
+//
+// Written by Curtis Olson, started December 2000.
+//
+// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+//
+// $Id$
+
+#include <simgear/bucket/newbucket.hxx>
+#include <simgear/debug/logstream.hxx>
+#include <simgear/misc/sg_path.hxx>
+
+#include "TileEntry.hxx"
+#include "TileCache.hxx"
+
+SG_USING_NAMESPACE(std);
+
+using simgear::TileEntry;
+using simgear::TileCache;
+
+TileCache::TileCache( void ) :
+ max_cache_size(100)
+{
+ tile_cache.clear();
+}
+
+
+TileCache::~TileCache( void ) {
+ clear_cache();
+}
+
+
+// Free a tile cache entry
+void TileCache::entry_free( long cache_index ) {
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "FREEING CACHE ENTRY = " << cache_index );
+ TileEntry *tile = tile_cache[cache_index];
+ tile->removeFromSceneGraph();
+
+ tile->free_tile();
+ delete tile;
+
+ tile_cache.erase( cache_index );
+}
+
+
+// Initialize the tile cache subsystem
+void TileCache::init( void ) {
+ SG_LOG( SG_TERRAIN, SG_INFO, "Initializing the tile cache." );
+
+ SG_LOG( SG_TERRAIN, SG_INFO, " max cache size = "
+ << max_cache_size );
+ SG_LOG( SG_TERRAIN, SG_INFO, " current cache size = "
+ << tile_cache.size() );
+
+#if 0 // don't clear the cache
+ clear_cache();
+#endif
+
+ SG_LOG( SG_TERRAIN, SG_INFO, " done with init()" );
+}
+
+
+// Search for the specified "bucket" in the cache
+bool TileCache::exists( const SGBucket& b ) const {
+ long tile_index = b.gen_index();
+ const_tile_map_iterator it = tile_cache.find( tile_index );
+
+ return ( it != tile_cache.end() );
+}
+
+
+// Return the index of the oldest tile in the cache, return -1 if
+// nothing available to be removed.
+long TileCache::get_oldest_tile() {
+ // we need to free the furthest entry
+ long min_index = -1;
+ double timestamp = 0.0;
+ double min_time = DBL_MAX;
+
+ tile_map_iterator current = tile_cache.begin();
+ tile_map_iterator end = tile_cache.end();
+
+ for ( ; current != end; ++current ) {
+ long index = current->first;
+ TileEntry *e = current->second;
+ if ( e->is_loaded() ) {
+ timestamp = e->get_timestamp();
+ if ( timestamp < min_time ) {
+ min_time = timestamp;
+ min_index = index;
+ }
+ } else {
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "loaded = " << e->is_loaded()
+ << " time stamp = " << e->get_timestamp() );
+ }
+ }
+
+ SG_LOG( SG_TERRAIN, SG_DEBUG, " index = " << min_index );
+ SG_LOG( SG_TERRAIN, SG_DEBUG, " min_time = " << min_time );
+
+ return min_index;
+}
+
+
+// Clear the inner ring flag for all tiles in the cache so that the
+// external tile scheduler can flag the inner ring correctly.
+void TileCache::clear_inner_ring_flags() {
+ tile_map_iterator current = tile_cache.begin();
+ tile_map_iterator end = tile_cache.end();
+
+ for ( ; current != end; ++current ) {
+ TileEntry *e = current->second;
+ if ( e->is_loaded() ) {
+ e->set_inner_ring( false );
+ }
+ }
+}
+
+// Clear a cache entry, note that the cache only holds pointers
+// and this does not free the object which is pointed to.
+void TileCache::clear_entry( long cache_index ) {
+ tile_cache.erase( cache_index );
+}
+
+
+// Clear all completely loaded tiles (ignores partially loaded tiles)
+void TileCache::clear_cache() {
+ std::vector<long> indexList;
+ tile_map_iterator current = tile_cache.begin();
+ tile_map_iterator end = tile_cache.end();
+
+ for ( ; current != end; ++current ) {
+ long index = current->first;
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "clearing " << index );
+ TileEntry *e = current->second;
+ if ( e->is_loaded() ) {
+ e->tile_bucket.make_bad();
+ // entry_free modifies tile_cache, so store index and call entry_free() later;
+ indexList.push_back( index);
+ }
+ }
+ for (unsigned int it = 0; it < indexList.size(); it++) {
+ entry_free( indexList[ it]);
+ }
+}
+
+/**
+ * Create a new tile and schedule it for loading.
+ */
+bool TileCache::insert_tile( TileEntry *e ) {
+ // register tile in the cache
+ long tile_index = e->get_tile_bucket().gen_index();
+ tile_cache[tile_index] = e;
+
+ return true;
+}
+
--- /dev/null
+// newcache.hxx -- routines to handle scenery tile caching
+//
+// Written by Curtis Olson, started December 2000.
+//
+// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+//
+// $Id$
+
+
+#ifndef _TILECACHE_HXX
+#define _TILECACHE_HXX
+
+#include <map>
+
+#include <simgear/bucket/newbucket.hxx>
+#include <simgear/math/point3d.hxx>
+#include <simgear/scene/tgdb/TileEntry.hxx>
+
+SG_USING_STD(map);
+
+namespace simgear {
+
+// A class to store and manage a pile of tiles
+class TileCache {
+public:
+ typedef map < long, simgear::TileEntry * > tile_map;
+ typedef tile_map::iterator tile_map_iterator;
+ typedef tile_map::const_iterator const_tile_map_iterator;
+private:
+ // cache storage space
+ tile_map tile_cache;
+
+ // maximum cache size
+ int max_cache_size;
+
+ // pointers to allow an external linear traversal of cache entries
+ tile_map_iterator current;
+
+ // Free a tile cache entry
+ void entry_free( long cache_index );
+
+public:
+ tile_map_iterator begin() { return tile_cache.begin(); }
+ tile_map_iterator end() { return tile_cache.end(); }
+ const_tile_map_iterator begin() const { return tile_cache.begin(); }
+ const_tile_map_iterator end() const { return tile_cache.end(); }
+
+ // Constructor
+ TileCache();
+
+ // Destructor
+ ~TileCache();
+
+ // Initialize the tile cache subsystem
+ void init( void );
+
+ // Check if the specified "bucket" exists in the cache
+ bool exists( const SGBucket& b ) const;
+
+ // Return the index of the oldest tile in the cache, return -1 if
+ // nothing available to be removed.
+ long get_oldest_tile();
+
+ // Clear the inner ring flag for all tiles in the cache so that
+ // the external tile scheduler can flag the inner ring correctly.
+ void clear_inner_ring_flags();
+
+ // Clear a cache entry, note that the cache only holds pointers
+ // and this does not free the object which is pointed to.
+ void clear_entry( long cache_entry );
+
+ // Clear all completely loaded tiles (ignores partially loaded tiles)
+ void clear_cache();
+
+ // Return a pointer to the specified tile cache entry
+ inline simgear::TileEntry *get_tile( const long tile_index ) const {
+ const_tile_map_iterator it = tile_cache.find( tile_index );
+ if ( it != tile_cache.end() ) {
+ return it->second;
+ } else {
+ return NULL;
+ }
+ }
+
+ // Return a pointer to the specified tile cache entry
+ inline simgear::TileEntry *get_tile( const SGBucket& b ) const {
+ return get_tile( b.gen_index() );
+ }
+
+ // Return the cache size
+ inline size_t get_size() const { return tile_cache.size(); }
+
+ // External linear traversal of cache
+ inline void reset_traversal() { current = tile_cache.begin(); }
+ inline bool at_end() { return current == tile_cache.end(); }
+ inline simgear::TileEntry *get_current() const {
+ // cout << "index = " << current->first << endl;
+ return current->second;
+ }
+ inline void next() { ++current; }
+
+ inline int get_max_cache_size() const { return max_cache_size; }
+ inline void set_max_cache_size( int m ) { max_cache_size = m; }
+
+ /**
+ * Create a new tile and enqueue it for loading.
+ * @param b
+ * @return success/failure
+ */
+ bool insert_tile( simgear::TileEntry* e );
+};
+
+}
+
+#endif // _TILECACHE_HXX
--- /dev/null
+// tileentry.cxx -- routines to handle a scenery tile
+//
+// Written by Curtis Olson, started May 1998.
+//
+// Copyright (C) 1998 - 2001 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+#include <simgear/compiler.h>
+#include <plib/ul.h>
+
+#include STL_STRING
+#include <sstream>
+
+#include <osg/Array>
+#include <osg/Geometry>
+#include <osg/Geode>
+#include <osg/LOD>
+#include <osg/MatrixTransform>
+#include <osg/Math>
+#include <osg/NodeCallback>
+#include <osg/Switch>
+
+#include <osgDB/FileNameUtils>
+#include <osgDB/ReaderWriter>
+#include <osgDB/ReadFile>
+#include <osgDB/Registry>
+
+#include <simgear/bucket/newbucket.hxx>
+#include <simgear/debug/logstream.hxx>
+#include <simgear/math/polar3d.hxx>
+#include <simgear/math/sg_geodesy.hxx>
+#include <simgear/math/sg_random.h>
+#include <simgear/math/SGMath.hxx>
+#include <simgear/misc/sgstream.hxx>
+#include <simgear/scene/material/mat.hxx>
+#include <simgear/scene/material/matlib.hxx>
+#include <simgear/scene/model/ModelRegistry.hxx>
+#include <simgear/scene/tgdb/apt_signs.hxx>
+#include <simgear/scene/tgdb/obj.hxx>
+#include <simgear/scene/tgdb/SGReaderWriterBTGOptions.hxx>
+#include <simgear/scene/model/placementtrans.hxx>
+#include <simgear/scene/util/SGUpdateVisitor.hxx>
+
+#include "ReaderWriterSTG.hxx"
+#include "TileEntry.hxx"
+
+SG_USING_STD(string);
+using namespace simgear;
+
+ModelLoadHelper *TileEntry::_modelLoader=0;
+
+namespace {
+osgDB::RegisterReaderWriterProxy<ReaderWriterSTG> g_readerWriterSTGProxy;
+ModelRegistryCallbackProxy<LoadOnlyCallback> g_stgCallbackProxy("stg");
+}
+
+// FIXME: investigate what huge update flood is clamped away here ...
+class FGTileUpdateCallback : public osg::NodeCallback {
+public:
+ virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
+ {
+ assert(dynamic_cast<SGUpdateVisitor*>(nv));
+ SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
+
+ osg::Vec3 center = node->getBound().center();
+ double distance = dist(updateVisitor->getGlobalEyePos(),
+ SGVec3d(center[0], center[1], center[2]));
+ if (updateVisitor->getVisibility() + node->getBound().radius() < distance)
+ return;
+
+ traverse(node, nv);
+ }
+};
+
+namespace
+{
+// Update the timestamp on a tile whenever it is in view.
+
+class TileCullCallback : public osg::NodeCallback
+{
+public:
+ TileCullCallback() : _timeStamp(0) {}
+ TileCullCallback(const TileCullCallback& tc, const osg::CopyOp& copyOp) :
+ NodeCallback(tc, copyOp), _timeStamp(tc._timeStamp)
+ {
+ }
+
+ virtual void operator()(osg::Node* node, osg::NodeVisitor* nv);
+ double getTimeStamp() const { return _timeStamp; }
+ void setTimeStamp(double timeStamp) { _timeStamp = timeStamp; }
+protected:
+ double _timeStamp;
+};
+}
+
+void TileCullCallback::operator()(osg::Node* node, osg::NodeVisitor* nv)
+{
+ if (nv->getFrameStamp())
+ _timeStamp = nv->getFrameStamp()->getReferenceTime();
+ traverse(node, nv);
+}
+
+double TileEntry::get_timestamp() const
+{
+ if (_node.valid()) {
+ return (dynamic_cast<TileCullCallback*>(_node->getCullCallback()))
+ ->getTimeStamp();
+ } else
+ return DBL_MAX;
+}
+
+void TileEntry::set_timestamp(double time_ms)
+{
+ if (_node.valid()) {
+ TileCullCallback* cb
+ = dynamic_cast<TileCullCallback*>(_node->getCullCallback());
+ if (cb)
+ cb->setTimeStamp(time_ms);
+ }
+}
+
+// Constructor
+TileEntry::TileEntry ( const SGBucket& b )
+ : tile_bucket( b ),
+ _node( new osg::LOD ),
+ is_inner_ring(false),
+ free_tracker(0),
+ tileFileName(b.gen_index_str())
+{
+ _node->setUpdateCallback(new FGTileUpdateCallback);
+ _node->setCullCallback(new TileCullCallback);
+ tileFileName += ".stg";
+ _node->setName(tileFileName);
+ // Give a default LOD range so that traversals that traverse
+ // active children (like the groundcache lookup) will work before
+ // tile manager has had a chance to update this node.
+ _node->setRange(0, 0.0, 10000.0);
+}
+
+
+// Destructor
+TileEntry::~TileEntry ()
+{
+}
+
+static void WorldCoordinate(osg::Matrix& obj_pos, double lat,
+ double lon, double elev, double hdg)
+{
+ SGGeod geod = SGGeod::fromDegM(lon, lat, elev);
+ obj_pos = geod.makeZUpFrame();
+ // hdg is not a compass heading, but a counter-clockwise rotation
+ // around the Z axis
+ obj_pos.preMult(osg::Matrix::rotate(hdg * SGD_DEGREES_TO_RADIANS,
+ 0.0, 0.0, 1.0));
+}
+
+
+// Free "n" leaf elements of an ssg tree. returns the number of
+// elements freed. An empty branch node is considered a leaf. This
+// is intended to spread the load of freeing a complex tile out over
+// several frames.
+static int fgPartialFreeSSGtree( osg::Group *b, int n ) {
+ int num_deletes = b->getNumChildren();
+
+ b->removeChildren(0, b->getNumChildren());
+
+ return num_deletes;
+}
+
+
+// Clean up the memory used by this tile and delete the arrays used by
+// ssg as well as the whole ssg branch
+bool TileEntry::free_tile() {
+ int delete_size = 100;
+ SG_LOG( SG_TERRAIN, SG_DEBUG,
+ "FREEING TILE = (" << tile_bucket << ")" );
+
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "(start) free_tracker = " << free_tracker );
+
+ if ( !(free_tracker & NODES) ) {
+ free_tracker |= NODES;
+ } else if ( !(free_tracker & VEC_PTRS) ) {
+ free_tracker |= VEC_PTRS;
+ } else if ( !(free_tracker & TERRA_NODE) ) {
+ // delete the terrain branch (this should already have been
+ // disconnected from the scene graph)
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "FREEING terra_transform" );
+ if ( fgPartialFreeSSGtree( _node.get(), delete_size ) == 0 ) {
+ _node = 0;
+ free_tracker |= TERRA_NODE;
+ }
+ } else if ( !(free_tracker & LIGHTMAPS) ) {
+ free_tracker |= LIGHTMAPS;
+ } else {
+ return true;
+ }
+
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "(end) free_tracker = " << free_tracker );
+
+ // if we fall down to here, we still have work todo, return false
+ return false;
+}
+
+
+// Update the ssg transform node for this tile so it can be
+// properly drawn relative to our (0,0,0) point
+void TileEntry::prep_ssg_node(float vis) {
+ if (!is_loaded())
+ return;
+ // visibility can change from frame to frame so we update the
+ // range selector cutoff's each time.
+ float bounding_radius = _node->getChild(0)->getBound().radius();
+ _node->setRange( 0, 0, vis + bounding_radius );
+}
+
+bool TileEntry::obj_load( const string& path,
+ osg::Group *geometry, bool is_base, const osgDB::ReaderWriter::Options*options)
+{
+ osg::Node* node = osgDB::readNodeFile(path, options);
+ if (node)
+ geometry->addChild(node);
+
+ return node;
+}
+
+
+typedef enum {
+ OBJECT,
+ OBJECT_SHARED,
+ OBJECT_STATIC,
+ OBJECT_SIGN,
+ OBJECT_RUNWAY_SIGN
+} object_type;
+
+
+// storage class for deferred object processing in TileEntry::load()
+struct Object {
+ Object(object_type t, const string& token, const SGPath& p, istream& in)
+ : type(t), path(p)
+ {
+ in >> name;
+ if (type != OBJECT)
+ in >> lon >> lat >> elev >> hdg;
+ in >> ::skipeol;
+
+ if (type == OBJECT)
+ SG_LOG(SG_TERRAIN, SG_INFO, " " << token << " " << name);
+ else
+ SG_LOG(SG_TERRAIN, SG_INFO, " " << token << " " << name << " lon=" <<
+ lon << " lat=" << lat << " elev=" << elev << " hdg=" << hdg);
+ }
+ object_type type;
+ string name;
+ SGPath path;
+ double lon, lat, elev, hdg;
+};
+
+// Work in progress... load the tile based entirely by name cuz that's
+// what we'll want to do with the database pager.
+
+osg::Node*
+TileEntry::loadTileByName(const string& index_str,
+ const osgDB::ReaderWriter::Options* options)
+{
+ long tileIndex;
+ {
+ std::istringstream idxStream(index_str);
+ idxStream >> tileIndex;
+ }
+ SGBucket tile_bucket(tileIndex);
+ const string basePath = tile_bucket.gen_base_path();
+
+ bool found_tile_base = false;
+
+ SGPath object_base;
+ vector<const Object*> objects;
+
+ SG_LOG( SG_TERRAIN, SG_INFO, "Loading tile " << index_str );
+
+ osgDB::FilePathList path_list=options->getDatabasePathList();
+
+ // scan and parse all files and store information
+ for (unsigned int i = 0; i < path_list.size(); i++) {
+ // If we found a terrain tile in Terrain/, we have to process the
+ // Objects/ dir in the same group, too, before we can stop scanning.
+ // FGGlobals::set_fg_scenery() inserts an empty string to path_list
+ // as marker.
+
+ if (path_list[i].empty()) {
+ if (found_tile_base)
+ break;
+ else
+ continue;
+ }
+
+ bool has_base = false;
+
+ SGPath tile_path = path_list[i];
+ tile_path.append(basePath);
+
+ SGPath basename = tile_path;
+ basename.append( index_str );
+
+ SG_LOG( SG_TERRAIN, SG_INFO, " Trying " << basename.str() );
+
+
+ // Check for master .stg (scene terra gear) file
+ SGPath stg_name = basename;
+ stg_name.concat( ".stg" );
+
+ sg_gzifstream in( stg_name.str() );
+ if ( !in.is_open() )
+ continue;
+
+ while ( ! in.eof() ) {
+ string token;
+ in >> token;
+
+ if ( token.empty() || token[0] == '#' ) {
+ in >> ::skipeol;
+ continue;
+ }
+ // Load only once (first found)
+ if ( token == "OBJECT_BASE" ) {
+ string name;
+ in >> name >> ::skipws;
+ SG_LOG( SG_TERRAIN, SG_INFO, " " << token << " " << name );
+
+ if (!found_tile_base) {
+ found_tile_base = true;
+ has_base = true;
+
+ object_base = tile_path;
+ object_base.append(name);
+
+ } else
+ SG_LOG(SG_TERRAIN, SG_INFO, " (skipped)");
+
+ // Load only if base is not in another file
+ } else if ( token == "OBJECT" ) {
+ if (!found_tile_base || has_base)
+ objects.push_back(new Object(OBJECT, token, tile_path, in));
+ else {
+ string name;
+ in >> name >> ::skipeol;
+ SG_LOG(SG_TERRAIN, SG_INFO, " " << token << " "
+ << name << " (skipped)");
+ }
+
+ // Always OK to load
+ } else if ( token == "OBJECT_STATIC" ) {
+ objects.push_back(new Object(OBJECT_STATIC, token, tile_path, in));
+
+ } else if ( token == "OBJECT_SHARED" ) {
+ objects.push_back(new Object(OBJECT_SHARED, token, tile_path, in));
+
+ } else if ( token == "OBJECT_SIGN" ) {
+ objects.push_back(new Object(OBJECT_SIGN, token, tile_path, in));
+
+ } else if ( token == "OBJECT_RUNWAY_SIGN" ) {
+ objects.push_back(new Object(OBJECT_RUNWAY_SIGN, token, tile_path, in));
+
+ } else {
+ SG_LOG( SG_TERRAIN, SG_DEBUG,
+ "Unknown token '" << token << "' in " << stg_name.str() );
+ in >> ::skipws;
+ }
+ }
+ }
+
+ SGReaderWriterBTGOptions *opt = new SGReaderWriterBTGOptions(*dynamic_cast<const SGReaderWriterBTGOptions *>(options));
+
+ // obj_load() will generate ground lighting for us ...
+ osg::Group* new_tile = new osg::Group;
+
+ if (found_tile_base) {
+ // load tile if found ...
+ opt->setCalcLights(true);
+ obj_load( object_base.str(), new_tile, true, options);
+
+ } else {
+ // ... or generate an ocean tile on the fly
+ SG_LOG(SG_TERRAIN, SG_INFO, " Generating ocean tile");
+ if ( !SGGenTile( path_list[0], tile_bucket,
+ opt->getMatlib(), new_tile ) ) {
+ SG_LOG( SG_TERRAIN, SG_ALERT,
+ "Warning: failed to generate ocean tile!" );
+ }
+ }
+
+
+ // now that we have a valid center, process all the objects
+ for (unsigned int j = 0; j < objects.size(); j++) {
+ const Object *obj = objects[j];
+
+ if (obj->type == OBJECT) {
+ SGPath custom_path = obj->path;
+ custom_path.append( obj->name );
+ opt->setCalcLights(true);
+ obj_load( custom_path.str(), new_tile, false, options);
+
+ } else if (obj->type == OBJECT_SHARED || obj->type == OBJECT_STATIC) {
+ // object loading is deferred to main render thread,
+ // but lets figure out the paths right now.
+ SGPath custom_path;
+ if ( obj->type == OBJECT_STATIC ) {
+ custom_path = obj->path;
+ } else {
+ // custom_path = globals->get_fg_root();
+ }
+ custom_path.append( obj->name );
+
+ osg::Matrix obj_pos;
+ WorldCoordinate( obj_pos, obj->lat, obj->lon, obj->elev, obj->hdg );
+
+ osg::MatrixTransform *obj_trans = new osg::MatrixTransform;
+ obj_trans->setMatrix( obj_pos );
+
+ // wire as much of the scene graph together as we can
+ new_tile->addChild( obj_trans );
+
+ osg::Node* model = 0;
+ if(_modelLoader)
+ model = _modelLoader->loadTileModel(custom_path.str(),
+ obj->type == OBJECT_SHARED);
+ if (model)
+ obj_trans->addChild(model);
+ } else if (obj->type == OBJECT_SIGN || obj->type == OBJECT_RUNWAY_SIGN) {
+ // load the object itself
+ SGPath custom_path = obj->path;
+ custom_path.append( obj->name );
+
+ osg::Matrix obj_pos;
+ WorldCoordinate( obj_pos, obj->lat, obj->lon, obj->elev, obj->hdg );
+
+ osg::MatrixTransform *obj_trans = new osg::MatrixTransform;
+ obj_trans->setMatrix( obj_pos );
+
+ osg::Node *custom_obj = 0;
+ if (obj->type == OBJECT_SIGN)
+ custom_obj = SGMakeSign(opt->getMatlib(), custom_path.str(), obj->name);
+ else
+ custom_obj = SGMakeRunwaySign(opt->getMatlib(), custom_path.str(), obj->name);
+
+ // wire the pieces together
+ if ( custom_obj != NULL ) {
+ obj_trans -> addChild( custom_obj );
+ }
+ new_tile->addChild( obj_trans );
+
+ }
+ delete obj;
+ }
+ return new_tile;
+}
+
+void
+TileEntry::addToSceneGraph(osg::Group *terrain_branch)
+{
+ terrain_branch->addChild( _node.get() );
+
+ SG_LOG( SG_TERRAIN, SG_DEBUG,
+ "connected a tile into scene graph. _node = "
+ << _node.get() );
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "num parents now = "
+ << _node->getNumParents() );
+}
+
+
+void
+TileEntry::removeFromSceneGraph()
+{
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "disconnecting TileEntry nodes" );
+
+ if (! is_loaded()) {
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "removing a not-fully loaded tile!" );
+ } else {
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "removing a fully loaded tile! _node = " << _node.get() );
+ }
+
+ // find the nodes branch parent
+ if ( _node->getNumParents() > 0 ) {
+ // find the first parent (should only be one)
+ osg::Group *parent = _node->getParent( 0 ) ;
+ if( parent ) {
+ parent->removeChild( _node.get() );
+ }
+ }
+}
+
--- /dev/null
+// tileentry.hxx -- routines to handle an individual scenery tile
+//
+// Written by Curtis Olson, started May 1998.
+//
+// Copyright (C) 1998 - 2001 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+//
+// $Id$
+
+
+#ifndef _TILEENTRY_HXX
+#define _TILEENTRY_HXX
+
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+#include <simgear/compiler.h>
+
+#include <vector>
+#include STL_STRING
+
+#include <simgear/bucket/newbucket.hxx>
+#include <simgear/math/point3d.hxx>
+#include <simgear/misc/sg_path.hxx>
+#include <simgear/scene/model/placementtrans.hxx>
+
+#include <osg/ref_ptr>
+#include <osgDB/ReaderWriter>
+#include <osg/Group>
+#include <osg/LOD>
+
+#if defined( sgi )
+#include <strings.h>
+#endif
+
+SG_USING_STD(string);
+SG_USING_STD(vector);
+
+namespace simgear {
+
+class ModelLoadHelper;
+
+/**
+ * A class to encapsulate everything we need to know about a scenery tile.
+ */
+class TileEntry {
+
+public:
+ // this tile's official location in the world
+ SGBucket tile_bucket;
+ std::string tileFileName;
+
+ typedef vector < Point3D > point_list;
+ typedef point_list::iterator point_list_iterator;
+ typedef point_list::const_iterator const_point_list_iterator;
+
+private:
+
+ // pointer to ssg range selector for this tile
+ osg::ref_ptr<osg::LOD> _node;
+
+ static bool obj_load( const std::string& path,
+ osg::Group* geometry,
+ bool is_base,
+ const osgDB::ReaderWriter::Options* options);
+
+ /**
+ * this value is used by the tile scheduler/loader to mark which
+ * tiles are in the primary ring (i.e. the current tile or the
+ * surrounding eight.) Other routines then can use this as an
+ * optimization and not do some operation to tiles outside of this
+ * inner ring. (For instance vasi color updating)
+ */
+ bool is_inner_ring;
+
+ /**
+ * this variable tracks the status of the incremental memory
+ * freeing.
+ */
+ enum {
+ NODES = 0x01,
+ VEC_PTRS = 0x02,
+ TERRA_NODE = 0x04,
+ GROUND_LIGHTS = 0x08,
+ VASI_LIGHTS = 0x10,
+ RWY_LIGHTS = 0x20,
+ TAXI_LIGHTS = 0x40,
+ LIGHTMAPS = 0x80
+ };
+ int free_tracker;
+
+ static ModelLoadHelper *_modelLoader;
+
+public:
+
+ // Constructor
+ TileEntry( const SGBucket& b );
+
+ // Destructor
+ ~TileEntry();
+
+ static void setModelLoadHelper(ModelLoadHelper *m) { _modelLoader=m; }
+
+ // Clean up the memory used by this tile and delete the arrays
+ // used by ssg as well as the whole ssg branch. This does a
+ // partial clean up and exits so we can spread the load across
+ // multiple frames. Returns false if work remaining to be done,
+ // true if dynamically allocated memory used by this tile is
+ // completely freed.
+ bool free_tile();
+
+ // Update the ssg transform node for this tile so it can be
+ // properly drawn relative to our (0,0,0) point
+ void prep_ssg_node(float vis);
+
+ /**
+ * Transition to OSG database pager
+ */
+ static osg::Node* loadTileByName(const std::string& index_str,
+ const osgDB::ReaderWriter::Options*);
+ /**
+ * Return true if the tile entry is loaded, otherwise return false
+ * indicating that the loading thread is still working on this.
+ */
+ inline bool is_loaded() const
+ {
+ return _node->getNumChildren() > 0;
+ }
+
+ /**
+ * Return the "bucket" for this tile
+ */
+ inline const SGBucket& get_tile_bucket() const { return tile_bucket; }
+
+ /**
+ * Add terrain mesh and ground lighting to scene graph.
+ */
+ void addToSceneGraph( osg::Group *terrain_branch);
+
+ /**
+ * disconnect terrain mesh and ground lighting nodes from scene
+ * graph for this tile.
+ */
+ void removeFromSceneGraph();
+
+
+ /**
+ * return the scenegraph node for the terrain
+ */
+ osg::LOD *getNode() const { return _node.get(); }
+
+ double get_timestamp() const;
+ void set_timestamp( double time_ms );
+
+ inline bool get_inner_ring() const { return is_inner_ring; }
+ inline void set_inner_ring( bool val ) { is_inner_ring = val; }
+};
+
+class ModelLoadHelper {
+public:
+ virtual osg::Node *loadTileModel(const string& modelPath, bool cacheModel)=0;
+
+};
+
+}
+
+#endif // _TILEENTRY_HXX
root_props = p;
}
- osg::Node* sgGetRandomModel(SGMatModel *obj) {
+osg::Node* sgGetRandomModel(SGMatModel *obj) {
return obj->get_random_model( root_props );
}
projects / simgear.git / commitdiff