// fgviewer.cxx -- alternative flightgear viewer application
//
// Copyright (C) 2009 - 2012 Mathias Froehlich
//
// 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.
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <osg/ArgumentParser>
#include <osgDB/ReadFile>
#include <osgViewer/ViewerEventHandlers>
#include <osgGA/KeySwitchMatrixManipulator>
#include <osgGA/StateSetManipulator>
#include <osgGA/TrackballManipulator>
#include <osgGA/FlightManipulator>
#include <osgGA/DriveManipulator>
#include <osgGA/TerrainManipulator>
#include <simgear/props/props.hxx>
#include <simgear/props/props_io.hxx>
#include <simgear/scene/material/matlib.hxx>
#include <simgear/scene/util/SGReaderWriterOptions.hxx>
#include <simgear/scene/util/SGSceneFeatures.hxx>
#include <simgear/scene/tgdb/userdata.hxx>
#include <simgear/scene/model/ModelRegistry.hxx>
#include <simgear/misc/ResourceManager.hxx>
#include "Renderer.hxx"
#include "Viewer.hxx"
#if FG_HAVE_HLA
#include "HLACameraManipulator.hxx"
#include "HLAViewerFederate.hxx"
#endif
int
main(int argc, char** argv)
{
/// Read arguments and environment variables.
// use an ArgumentParser object to manage the program arguments.
// FIXME implement a flightgear similar argument parser into simgear and use this one
osg::ArgumentParser arguments(&argc, argv);
sglog().set_log_classes(SG_ALL);
sglog().set_log_priority(SG_ALERT);
std::string fg_root;
if (arguments.read("--fg-root", fg_root)) {
} else if (const char *fg_root_env = std::getenv("FG_ROOT")) {
fg_root = fg_root_env;
} else {
fg_root = PKGLIBDIR;
}
std::string fg_scenery;
if (arguments.read("--fg-scenery", fg_scenery)) {
} else if (const char *fg_scenery_env = std::getenv("FG_SCENERY")) {
fg_scenery = fg_scenery_env;
} else {
SGPath path(fg_root);
path.append("Scenery");
fg_scenery = path.str();
}
SGSharedPtr<SGPropertyNode> props = new SGPropertyNode;
try {
SGPath preferencesFile = fg_root;
preferencesFile.append("preferences.xml");
readProperties(preferencesFile.str(), props);
} catch (...) {
// In case of an error, at least make summer :)
props->getNode("sim/startup/season", true)->setStringValue("summer");
SG_LOG(SG_GENERAL, SG_ALERT, "Problems loading FlightGear preferences.\n"
<< "Probably FG_ROOT is not properly set.");
}
std::string config;
while (arguments.read("--config", config)) {
try {
readProperties(config, props);
} catch (...) {
SG_LOG(SG_GENERAL, SG_ALERT, "Problems loading config file \"" << config
<< "\" given on the command line.");
}
}
std::string prop, value;
while (arguments.read("--prop", prop, value)) {
props->setStringValue(prop, value);
}
std::string renderer;
while (arguments.read("--renderer", renderer));
if (arguments.read("--hla")) {
props->setStringValue("hla/federate/federation", "rti:///FlightGear");
}
std::string federation;
if (arguments.read("--federation", federation)) {
props->setStringValue("hla/federate/federation", federation);
}
/// Start setting up the viewer windows and start feeding them.
// construct the viewer.
fgviewer::Viewer viewer(arguments);
if (renderer.empty()) {
// Currently just the defautl renderer. More to come.
viewer.setRenderer(new fgviewer::Renderer);
} else {
SG_LOG(SG_GENERAL, SG_ALERT, "Unknown renderer configuration \"" << renderer
<< "\" given on the command line.");
return EXIT_FAILURE;
}
// A viewer configuration
if (const SGPropertyNode* viewerNode = props->getChild("viewer")) {
if (!viewer.readCameraConfig(*viewerNode)) {
SG_LOG(SG_GENERAL, SG_ALERT, "Reading camera configuration failed.");
return EXIT_FAILURE;
}
}
// set up the camera manipulators.
osgGA::KeySwitchMatrixManipulator* keyswitchManipulator;
keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;
keyswitchManipulator->addMatrixManipulator('1', "Trackball",
new osgGA::TrackballManipulator);
keyswitchManipulator->addMatrixManipulator('2', "Flight",
new osgGA::FlightManipulator);
keyswitchManipulator->addMatrixManipulator('3', "Drive",
new osgGA::DriveManipulator);
keyswitchManipulator->addMatrixManipulator('4', "Terrain",
new osgGA::TerrainManipulator);
viewer.setCameraManipulator(keyswitchManipulator);
// Usefull stats
viewer.addEventHandler(new osgGA::StateSetManipulator(viewer.getSceneDataGroup()->getOrCreateStateSet()));
viewer.addEventHandler(new osgViewer::HelpHandler);
viewer.addEventHandler(new osgViewer::StatsHandler);
viewer.addEventHandler(new osgViewer::ThreadingHandler);
viewer.addEventHandler(new osgViewer::LODScaleHandler);
viewer.addEventHandler(new osgViewer::ScreenCaptureHandler);
viewer.addEventHandler(new osgViewer::WindowSizeHandler);
// We want on demand database paging
viewer.setDatabasePager(new osgDB::DatabasePager);
viewer.getDatabasePager()->setUpThreads(1, 1);
/// now set up the simgears required model stuff
simgear::ResourceManager::instance()->addBasePath(fg_root, simgear::ResourceManager::PRIORITY_DEFAULT);
// Just reference simgears reader writer stuff so that the globals get
// pulled in by the linker ...
// FIXME: make that more explicit clear and call an initialization function
simgear::ModelRegistry::instance();
// FIXME Ok, replace this by querying the root of the property tree
sgUserDataInit(props.get());
SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::DoNotUseCompression);
SGMaterialLibPtr ml = new SGMaterialLib;
SGPath mpath(fg_root);
mpath.append("Materials/default/materials.xml");
try {
ml->load(fg_root, mpath.str(), props);
} catch (...) {
SG_LOG(SG_GENERAL, SG_ALERT, "Problems loading FlightGear materials.\n"
<< "Probably FG_ROOT is not properly set.");
}
simgear::SGModelLib::init(fg_root, props);
// Set up the reader/writer options
osg::ref_ptr<simgear::SGReaderWriterOptions> options;
if (osgDB::Options* ropt = osgDB::Registry::instance()->getOptions())
options = new simgear::SGReaderWriterOptions(*ropt);
else
options = new simgear::SGReaderWriterOptions;
osgDB::convertStringPathIntoFilePathList(fg_scenery,
options->getDatabasePathList());
options->setMaterialLib(ml);
options->setPropertyNode(props);
options->setPluginStringData("SimGear::FG_ROOT", fg_root);
// Omit building bounding volume trees, as the viewer will not run a simulation
options->setPluginStringData("SimGear::BOUNDINGVOLUMES", "OFF");
viewer.setReaderWriterOptions(options.get());
// Here, all arguments are processed
arguments.reportRemainingOptionsAsUnrecognized();
arguments.writeErrorMessages(std::cerr);
if (props->getNode("hla/federate/federation")) {
#if FG_HAVE_HLA
const SGPropertyNode* federateNode = props->getNode("hla/federate");
SGSharedPtr<fgviewer::HLAViewerFederate> viewerFederate;
viewerFederate = new fgviewer::HLAViewerFederate;
viewerFederate->setVersion(federateNode->getStringValue("version", "RTI13"));
// viewerFederate->setConnectArguments(federateNode->getStringValue("connect-arguments", ""));
viewerFederate->setFederateType(federateNode->getStringValue("type", "ViewerFederate"));
viewerFederate->setFederateName(federateNode->getStringValue("name", ""));
viewerFederate->setFederationExecutionName(federateNode->getStringValue("federation", ""));
std::string objectModel;
objectModel = federateNode->getStringValue("federation-object-model", "HLA/fg-local-fom.xml");
if (SGPath(objectModel).isRelative()) {
SGPath path = fg_root;
path.append(objectModel);
objectModel = path.str();
}
viewerFederate->setFederationObjectModel(objectModel);
if (!viewerFederate->init()) {
SG_LOG(SG_NETWORK, SG_ALERT, "Got error from federate init!");
} else {
viewer.setViewerFederate(viewerFederate.get());
viewer.setCameraManipulator(new fgviewer::HLACameraManipulator(viewerFederate->getViewer()));
}
#else
SG_LOG(SG_GENERAL, SG_ALERT, "Unable to enter HLA/RTI viewer mode: HLA/RTI disabled at compile time.");
#endif
}
/// Read the model files that are configured.
osg::ref_ptr<osg::Node> loadedModel;
if (1 < arguments.argc()) {
// read the scene from the list of file specified command line args.
loadedModel = osgDB::readNodeFiles(arguments, options.get());
} else {
// if no arguments given resort to the whole world scenery
options->setPluginStringData("SimGear::FG_EARTH", "ON");
loadedModel = osgDB::readNodeFile("w180s90-360x180.spt", options.get());
}
// if no model has been successfully loaded report failure.
if (!loadedModel.valid()) {
SG_LOG(SG_GENERAL, SG_ALERT, arguments.getApplicationName()
<< ": No data loaded");
return EXIT_FAILURE;
}
// pass the loaded scene graph to the viewer.
viewer.insertSceneData(loadedModel.get());
// Note that this does not affect the hla camera manipulator
viewer.home();
return viewer.run();
}