From 68dd50ecbc0f9ddd08afe30d66818ba3ee67bba0 Mon Sep 17 00:00:00 2001 From: Mathias Froehlich Date: Sat, 25 Aug 2012 08:43:12 +0200 Subject: [PATCH] stg: Add flag to load only specific parts of the stg files. The flags are meant to be used for fgelev and for an ai module that will probably only need ground elevation queries in those reagions where the aircraft simulated there will roll that is on airports. --- simgear/scene/tgdb/ReaderWriterSTG.cxx | 135 +++++++++++++++---------- 1 file changed, 84 insertions(+), 51 deletions(-) diff --git a/simgear/scene/tgdb/ReaderWriterSTG.cxx b/simgear/scene/tgdb/ReaderWriterSTG.cxx index 8e5913d8..0f800791 100644 --- a/simgear/scene/tgdb/ReaderWriterSTG.cxx +++ b/simgear/scene/tgdb/ReaderWriterSTG.cxx @@ -49,6 +49,24 @@ using namespace simgear; +/// Ok, this is a hack - we do not exactly know if it's an airport or not. +/// This feature might also vanish again later. This is currently to +/// support testing an external ai component that just loads the the airports +/// and supports ground queries on only these areas. +static bool isAirportBtg(const std::string& name) +{ + if (name.size() < 8) + return false; + if (name.substr(4, 8) != ".btg") + return false; + for (unsigned i = 0; i < 4; ++i) { + if (name[i] < 'A' || 'Z' < name[i]) + continue; + return true; + } + return false; +} + static SGBucket bucketIndexFromFileName(const std::string& fileName) { // Extract the bucket from the filename @@ -194,7 +212,12 @@ ReaderWriterSTG::readStgFile(const std::string& absoluteFileName, sharedOptions->getDatabasePathList().push_back(path.str()); std::string fg_root = options->getPluginStringData("SimGear::FG_ROOT"); sharedOptions->getDatabasePathList().push_back(fg_root); - + + // do only load airport btg files. + bool onlyAirports = options->getPluginStringData("SimGear::FG_ONLY_AIRPORTS") == "ON"; + // do only load terrain btg files + bool onlyTerrain = options->getPluginStringData("SimGear::FG_ONLY_TERRAIN") == "ON"; + simgear::AirportSignBuilder signBuilder(staticOptions->getMaterialLib(), bucket.get_center()); bool has_base = false; @@ -221,23 +244,28 @@ ReaderWriterSTG::readStgFile(const std::string& absoluteFileName, SG_LOG( SG_TERRAIN, SG_BULK, " " << token << " " << name ); has_base = true; - node = osgDB::readRefNodeFile(path.str(), - staticOptions.get()); + + if (!onlyAirports || isAirportBtg(name)) { + node = osgDB::readRefNodeFile(path.str(), + staticOptions.get()); - if (!node.valid()) { - SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName - << ": Failed to load OBJECT_BASE '" - << name << "'" ); + if (!node.valid()) { + SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName + << ": Failed to load OBJECT_BASE '" + << name << "'" ); + } } } else if ( token == "OBJECT" ) { - node = osgDB::readRefNodeFile(path.str(), - staticOptions.get()); + if (!onlyAirports || isAirportBtg(name)) { + node = osgDB::readRefNodeFile(path.str(), + staticOptions.get()); - if (!node.valid()) { - SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName - << ": Failed to load OBJECT '" - << name << "'" ); + if (!node.valid()) { + SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName + << ": Failed to load OBJECT '" + << name << "'" ); + } } } else { @@ -246,46 +274,50 @@ ReaderWriterSTG::readStgFile(const std::string& absoluteFileName, // Always OK to load if ( token == "OBJECT_STATIC" ) { - osg::ref_ptr opt; - opt = new SGReaderWriterOptions(*staticOptions); - osg::ProxyNode* proxyNode = new osg::ProxyNode; - proxyNode->setLoadingExternalReferenceMode(osg::ProxyNode::DEFER_LOADING_TO_DATABASE_PAGER); - /// Hmm, the findDataFile should happen downstream - std::string absName = osgDB::findDataFile(name, opt.get()); - proxyNode->setFileName(0, absName); - if (SGPath(absName).lower_extension() == "ac") - { - proxyNode->setNodeMask( ~simgear::MODELLIGHT_BIT ); - opt->setInstantiateEffects(true); - } - else - opt->setInstantiateEffects(false); - proxyNode->setDatabaseOptions(opt.get()); - node = proxyNode; - - if (!node.valid()) { - SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName - << ": Failed to load OBJECT_STATIC '" - << name << "'" ); + if (!onlyTerrain) { + osg::ref_ptr opt; + opt = new SGReaderWriterOptions(*staticOptions); + osg::ProxyNode* proxyNode = new osg::ProxyNode; + proxyNode->setLoadingExternalReferenceMode(osg::ProxyNode::DEFER_LOADING_TO_DATABASE_PAGER); + /// Hmm, the findDataFile should happen downstream + std::string absName = osgDB::findDataFile(name, opt.get()); + proxyNode->setFileName(0, absName); + if (SGPath(absName).lower_extension() == "ac") + { + proxyNode->setNodeMask( ~simgear::MODELLIGHT_BIT ); + opt->setInstantiateEffects(true); + } + else + opt->setInstantiateEffects(false); + proxyNode->setDatabaseOptions(opt.get()); + node = proxyNode; + + if (!node.valid()) { + SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName + << ": Failed to load OBJECT_STATIC '" + << name << "'" ); + } } } else if ( token == "OBJECT_SHARED" ) { - osg::ref_ptr opt; - opt = new SGReaderWriterOptions(*sharedOptions); - /// Hmm, the findDataFile should happen in the downstream readers - std::string absName = osgDB::findDataFile(name, opt.get()); - if (SGPath(absName).lower_extension() == "ac") - opt->setInstantiateEffects(true); - else - opt->setInstantiateEffects(false); - node = osgDB::readRefNodeFile(absName, opt.get()); - if (SGPath(absName).lower_extension() == "ac") - node->setNodeMask( ~simgear::MODELLIGHT_BIT ); - - if (!node.valid()) { - SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName - << ": Failed to load OBJECT_SHARED '" - << name << "'" ); + if (!onlyTerrain) { + osg::ref_ptr opt; + opt = new SGReaderWriterOptions(*sharedOptions); + /// Hmm, the findDataFile should happen in the downstream readers + std::string absName = osgDB::findDataFile(name, opt.get()); + if (SGPath(absName).lower_extension() == "ac") + opt->setInstantiateEffects(true); + else + opt->setInstantiateEffects(false); + node = osgDB::readRefNodeFile(absName, opt.get()); + if (SGPath(absName).lower_extension() == "ac") + node->setNodeMask( ~simgear::MODELLIGHT_BIT ); + + if (!node.valid()) { + SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName + << ": Failed to load OBJECT_SHARED '" + << name << "'" ); + } } } else if ( token == "OBJECT_SIGN" ) { @@ -294,7 +326,8 @@ ReaderWriterSTG::readStgFile(const std::string& absoluteFileName, if ( hasOptionalValue(in) ){ in >> size; } - signBuilder.addSign(SGGeod::fromDegM(lon, lat, elev), hdg, name, size); + if (!onlyTerrain) + signBuilder.addSign(SGGeod::fromDegM(lon, lat, elev), hdg, name, size); } else { SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName << ": Unknown token '" << token << "'" ); -- 2.39.5