271 lines
10 KiB
C++
271 lines
10 KiB
C++
// fgviewer.cxx -- alternative flightgear viewer application
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//
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// Copyright (C) 2009 - 2012 Mathias Froehlich
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <osg/ArgumentParser>
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#include <osgDB/ReadFile>
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#include <osgViewer/ViewerEventHandlers>
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#include <osgGA/KeySwitchMatrixManipulator>
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#include <osgGA/StateSetManipulator>
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#include <osgGA/TrackballManipulator>
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#include <osgGA/FlightManipulator>
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#include <osgGA/DriveManipulator>
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#include <osgGA/TerrainManipulator>
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#include <simgear/props/props.hxx>
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#include <simgear/props/props_io.hxx>
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#include <simgear/scene/material/matlib.hxx>
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#include <simgear/scene/util/SGReaderWriterOptions.hxx>
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#include <simgear/scene/util/SGSceneFeatures.hxx>
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#include <simgear/scene/tgdb/userdata.hxx>
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#include <simgear/scene/model/ModelRegistry.hxx>
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#include <simgear/misc/ResourceManager.hxx>
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#include "Renderer.hxx"
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#include "Viewer.hxx"
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#if FG_HAVE_HLA
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#include "HLACameraManipulator.hxx"
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#include "HLAViewerFederate.hxx"
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#endif
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int
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main(int argc, char** argv)
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{
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/// Read arguments and environment variables.
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// use an ArgumentParser object to manage the program arguments.
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// FIXME implement a flightgear similar argument parser into simgear and use this one
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osg::ArgumentParser arguments(&argc, argv);
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sglog().set_log_classes(SG_ALL);
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sglog().set_log_priority(SG_ALERT);
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std::string fg_root;
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if (arguments.read("--fg-root", fg_root)) {
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} else if (const char *fg_root_env = std::getenv("FG_ROOT")) {
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fg_root = fg_root_env;
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} else {
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fg_root = PKGLIBDIR;
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}
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std::string fg_scenery;
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if (arguments.read("--fg-scenery", fg_scenery)) {
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} else if (const char *fg_scenery_env = std::getenv("FG_SCENERY")) {
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fg_scenery = fg_scenery_env;
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} else {
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SGPath path(fg_root);
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path.append("Scenery");
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fg_scenery = path.str();
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}
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SGSharedPtr<SGPropertyNode> props = new SGPropertyNode;
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try {
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SGPath preferencesFile = fg_root;
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preferencesFile.append("preferences.xml");
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readProperties(preferencesFile.str(), props);
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} catch (...) {
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// In case of an error, at least make summer :)
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props->getNode("sim/startup/season", true)->setStringValue("summer");
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SG_LOG(SG_GENERAL, SG_ALERT, "Problems loading FlightGear preferences.\n"
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<< "Probably FG_ROOT is not properly set.");
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}
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std::string config;
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while (arguments.read("--config", config)) {
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try {
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readProperties(config, props);
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} catch (...) {
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SG_LOG(SG_GENERAL, SG_ALERT, "Problems loading config file \"" << config
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<< "\" given on the command line.");
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}
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}
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std::string prop, value;
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while (arguments.read("--prop", prop, value)) {
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props->setStringValue(prop, value);
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}
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std::string renderer;
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while (arguments.read("--renderer", renderer));
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if (arguments.read("--hla")) {
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props->setStringValue("hla/federate/federation", "rti:///FlightGear");
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}
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std::string federation;
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if (arguments.read("--federation", federation)) {
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props->setStringValue("hla/federate/federation", federation);
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}
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/// Start setting up the viewer windows and start feeding them.
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// construct the viewer.
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fgviewer::Viewer viewer(arguments);
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if (renderer.empty()) {
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// Currently just the defautl renderer. More to come.
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viewer.setRenderer(new fgviewer::Renderer);
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} else {
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SG_LOG(SG_GENERAL, SG_ALERT, "Unknown renderer configuration \"" << renderer
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<< "\" given on the command line.");
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return EXIT_FAILURE;
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}
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// A viewer configuration
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if (const SGPropertyNode* viewerNode = props->getChild("viewer")) {
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if (!viewer.readCameraConfig(*viewerNode)) {
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SG_LOG(SG_GENERAL, SG_ALERT, "Reading camera configuration failed.");
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return EXIT_FAILURE;
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}
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}
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// set up the camera manipulators.
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osgGA::KeySwitchMatrixManipulator* keyswitchManipulator;
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keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;
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keyswitchManipulator->addMatrixManipulator('1', "Trackball",
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new osgGA::TrackballManipulator);
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keyswitchManipulator->addMatrixManipulator('2', "Flight",
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new osgGA::FlightManipulator);
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keyswitchManipulator->addMatrixManipulator('3', "Drive",
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new osgGA::DriveManipulator);
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keyswitchManipulator->addMatrixManipulator('4', "Terrain",
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new osgGA::TerrainManipulator);
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viewer.setCameraManipulator(keyswitchManipulator);
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// Usefull stats
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viewer.addEventHandler(new osgGA::StateSetManipulator(viewer.getSceneDataGroup()->getOrCreateStateSet()));
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viewer.addEventHandler(new osgViewer::HelpHandler);
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viewer.addEventHandler(new osgViewer::StatsHandler);
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viewer.addEventHandler(new osgViewer::ThreadingHandler);
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viewer.addEventHandler(new osgViewer::LODScaleHandler);
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viewer.addEventHandler(new osgViewer::ScreenCaptureHandler);
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viewer.addEventHandler(new osgViewer::WindowSizeHandler);
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// We want on demand database paging
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viewer.setDatabasePager(new osgDB::DatabasePager);
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viewer.getDatabasePager()->setUpThreads(1, 1);
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/// now set up the simgears required model stuff
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simgear::ResourceManager::instance()->addBasePath(fg_root, simgear::ResourceManager::PRIORITY_DEFAULT);
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// Just reference simgears reader writer stuff so that the globals get
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// pulled in by the linker ...
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// FIXME: make that more explicit clear and call an initialization function
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simgear::ModelRegistry::instance();
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// FIXME Ok, replace this by querying the root of the property tree
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sgUserDataInit(props.get());
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SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::DoNotUseCompression);
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SGMaterialLibPtr ml = new SGMaterialLib;
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SGPath mpath(fg_root);
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mpath.append("Materials/default/materials.xml");
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try {
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ml->load(fg_root, mpath.str(), props);
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} catch (...) {
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SG_LOG(SG_GENERAL, SG_ALERT, "Problems loading FlightGear materials.\n"
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<< "Probably FG_ROOT is not properly set.");
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}
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ml->refreshActiveMaterials();
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simgear::SGModelLib::init(fg_root, props);
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// Set up the reader/writer options
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osg::ref_ptr<simgear::SGReaderWriterOptions> options;
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if (osgDB::Options* ropt = osgDB::Registry::instance()->getOptions())
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options = new simgear::SGReaderWriterOptions(*ropt);
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else
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options = new simgear::SGReaderWriterOptions;
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osgDB::convertStringPathIntoFilePathList(fg_scenery,
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options->getDatabasePathList());
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options->setMaterialLib(ml);
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options->setPropertyNode(props);
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options->setPluginStringData("SimGear::FG_ROOT", fg_root);
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// Omit building bounding volume trees, as the viewer will not run a simulation
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options->setPluginStringData("SimGear::BOUNDINGVOLUMES", "OFF");
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viewer.setReaderWriterOptions(options.get());
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// Here, all arguments are processed
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arguments.reportRemainingOptionsAsUnrecognized();
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arguments.writeErrorMessages(std::cerr);
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if (props->getNode("hla/federate/federation")) {
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#if FG_HAVE_HLA
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const SGPropertyNode* federateNode = props->getNode("hla/federate");
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SGSharedPtr<fgviewer::HLAViewerFederate> viewerFederate;
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viewerFederate = new fgviewer::HLAViewerFederate;
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viewerFederate->setVersion(federateNode->getStringValue("version", "RTI13"));
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// viewerFederate->setConnectArguments(federateNode->getStringValue("connect-arguments", ""));
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viewerFederate->setFederateType(federateNode->getStringValue("type", "ViewerFederate"));
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viewerFederate->setFederateName(federateNode->getStringValue("name", ""));
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viewerFederate->setFederationExecutionName(federateNode->getStringValue("federation", ""));
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std::string objectModel;
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objectModel = federateNode->getStringValue("federation-object-model", "HLA/fg-local-fom.xml");
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if (SGPath(objectModel).isRelative()) {
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SGPath path = fg_root;
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path.append(objectModel);
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objectModel = path.str();
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}
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viewerFederate->setFederationObjectModel(objectModel);
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if (!viewerFederate->init()) {
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SG_LOG(SG_NETWORK, SG_ALERT, "Got error from federate init!");
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} else {
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viewer.setViewerFederate(viewerFederate.get());
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viewer.setCameraManipulator(new fgviewer::HLACameraManipulator(viewerFederate->getViewer()));
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}
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#else
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SG_LOG(SG_GENERAL, SG_ALERT, "Unable to enter HLA/RTI viewer mode: HLA/RTI disabled at compile time.");
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#endif
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}
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/// Read the model files that are configured.
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osg::ref_ptr<osg::Node> loadedModel;
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if (1 < arguments.argc()) {
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// read the scene from the list of file specified command line args.
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loadedModel = osgDB::readNodeFiles(arguments, options.get());
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} else {
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// if no arguments given resort to the whole world scenery
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options->setPluginStringData("SimGear::FG_EARTH", "ON");
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loadedModel = osgDB::readNodeFile("w180s90-360x180.spt", options.get());
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}
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// if no model has been successfully loaded report failure.
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if (!loadedModel.valid()) {
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SG_LOG(SG_GENERAL, SG_ALERT, arguments.getApplicationName()
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<< ": No data loaded");
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return EXIT_FAILURE;
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}
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// pass the loaded scene graph to the viewer.
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viewer.insertSceneData(loadedModel.get());
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// Note that this does not affect the hla camera manipulator
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viewer.home();
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return viewer.run();
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}
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