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sg: move most scenery-related code to simgear

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From Till Busch
This commit is contained in:
timoore
2008-05-14 22:07:50 +00:00
parent 74116057a7
commit 367f1813de
12 changed files with 1132 additions and 7 deletions
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15
projects/VC7.1/SimGear.vcproj
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@@ -893,6 +893,21 @@
<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"

6
simgear/scene/model/ModelRegistry.cxx
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@@ -252,7 +252,7 @@ public:
texture = dynamic_cast<Texture*>(refAttr.first.get());
if (!texture)
return;
texture->setDataVariance(Object::STATIC);
}
@@ -406,7 +406,7 @@ osg::Node* OptimizeModelPolicy::optimize(osg::Node* node,
// STATIC so that textures will be globally shared.
SGTexDataVarianceVisitor dataVarianceVisitor;
node->accept(dataVarianceVisitor);
SGTexCompressionVisitor texComp;
node->accept(texComp);
return node;
@@ -585,4 +585,4 @@ typedef ModelRegistryCallback<ACProcessPolicy, DefaultCachePolicy,
namespace
{
ModelRegistryCallbackProxy<ACCallback> g_acRegister("ac");
}
}

1
simgear/scene/model/SGReaderWriterXML.cxx
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@@ -181,6 +181,7 @@ sgLoad3DModel_internal(const string &path,
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

8
simgear/scene/tgdb/Makefile.am
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@@ -9,6 +9,7 @@ include_HEADERS = \
obj.hxx \
pt_lights.hxx \
userdata.hxx \
ReaderWriterSTG.hxx \
SGOceanTile.hxx \
SGVasiDrawable.hxx \
SGDirectionalLightBin.hxx \
@@ -19,18 +20,23 @@ include_HEADERS = \
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)

77
simgear/scene/tgdb/ReaderWriterSTG.cxx Normal file
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@@ -0,0 +1,77 @@
// 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;
}

41
simgear/scene/tgdb/ReaderWriterSTG.hxx Normal file
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@@ -0,0 +1,41 @@
// 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

4
simgear/scene/tgdb/SGReaderWriterBTGOptions.hxx
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@@ -15,7 +15,7 @@
// 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>
@@ -28,7 +28,7 @@ public:
_useRandomObjects(false),
_useRandomVegetation(false)
{}
SGReaderWriterBTGOptions(const SGReaderWriterBTGOptions& options,
const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
osgDB::ReaderWriter::Options(options, copyop),

171
simgear/scene/tgdb/TileCache.cxx Normal file
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@@ -0,0 +1,171 @@
// 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;
}

129
simgear/scene/tgdb/TileCache.hxx Normal file
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@@ -0,0 +1,129 @@
// 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

503
simgear/scene/tgdb/TileEntry.cxx Normal file
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@@ -0,0 +1,503 @@
// 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() );
}
}
}

182
simgear/scene/tgdb/TileEntry.hxx Normal file
View File

@@ -0,0 +1,182 @@
// 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

2
simgear/scene/tgdb/userdata.cxx
View File

@@ -60,7 +60,7 @@ void sgUserDataInit( SGPropertyNode *p ) {
root_props = p;
}
osg::Node* sgGetRandomModel(SGMatModel *obj) {
osg::Node* sgGetRandomModel(SGMatModel *obj) {
return obj->get_random_model( root_props );
}