FGFS-4.1/OpenSceneGraph
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Added signal handling code, and prelimary lat/long computation

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This commit is contained in:
Robert Osfield 2008-05-12 16:59:04 +00:00
parent 61f630e163
commit c81b02bca4
2 changed files with 100 additions and 1 deletions
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2
applications/osgfilecache/CMakeLists.txt
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@ -1,5 +1,7 @@
SET(TARGET_SRC osgfilecache.cpp )
SET(TARGET_ADDED_LIBRARIES osgTerrain )
#### end var setup ###
SETUP_APPLICATION(osgfilecache)

99
applications/osgfilecache/osgfilecache.cpp
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@ -12,6 +12,10 @@
#include <osg/Timer>
#include <osg/ArgumentParser>
#include <osg/ApplicationUsage>
#include <osg/CoordinateSystemNode>
#include <osg/io_utils>
#include <osgTerrain/TerrainTile>
#include <osgDB/Archive>
#include <osgDB/ReadFile>
@ -21,22 +25,84 @@
#include <iostream>
#include <algorithm>
#include <signal.h>
static bool s_ExitApplication = false;
class LoadDataVisitor : public osg::NodeVisitor
{
public:
LoadDataVisitor(unsigned int maxNumLevels=0):
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
_maxLevels(maxNumLevels),
_currentLevel(0) {}
void apply(osg::CoordinateSystemNode& cs)
{
std::cout<<"CoordinateSystemNode "<<std::endl;
if (!s_ExitApplication) traverse(cs);
}
void apply(osg::Group& group)
{
osgTerrain::TerrainTile* terrainTile = dynamic_cast<osgTerrain::TerrainTile*>(&group);
osgTerrain::Locator* locator = terrainTile ? terrainTile->getLocator() : 0;
if (locator)
{
std::cout<<" Found terrain locator "<<locator<<std::endl;
osg::Vec3d l00(0.0,0.0,0.0);
osg::Vec3d l10(1.0,0.0,0.0);
osg::Vec3d l11(1.0,1.0,0.0);
osg::Vec3d l01(0.0,1.0,0.0);
osg::Vec3d w00, w10, w11, w01;
locator->convertLocalToModel(l00, w00);
locator->convertLocalToModel(l10, w10);
locator->convertLocalToModel(l11, w11);
locator->convertLocalToModel(l01, w01);
if (locator->getEllipsoidModel() &&
locator->getCoordinateSystemType()==osgTerrain::Locator::GEOCENTRIC)
{
convertXYZToLatLongHeight(locator->getEllipsoidModel(), w00);
convertXYZToLatLongHeight(locator->getEllipsoidModel(), w10);
convertXYZToLatLongHeight(locator->getEllipsoidModel(), w11);
convertXYZToLatLongHeight(locator->getEllipsoidModel(), w01);
}
osg::notify(osg::NOTICE)<<" w00 = "<<w00<<std::endl;
osg::notify(osg::NOTICE)<<" w10 = "<<w10<<std::endl;
osg::notify(osg::NOTICE)<<" w11 = "<<w11<<std::endl;
osg::notify(osg::NOTICE)<<" w01 = "<<w01<<std::endl;
}
if (!s_ExitApplication) traverse(group);
}
void apply(osg::PagedLOD& plod)
{
if (_currentLevel>_maxLevels) return;
if (s_ExitApplication) return;
++_currentLevel;
std::cout<<"Found PagedLOD "<<plod.getNumFileNames()<<std::endl;
// first compute the bounds of this subgraph
for(unsigned int i=0; i<plod.getNumFileNames(); ++i)
{
if (plod.getFileName(i).empty())
{
std::cout<<" search local subgraph"<<std::endl;
traverse(plod);
}
}
for(unsigned int i=0; i<plod.getNumFileNames(); ++i)
{
std::cout<<" filename["<<i<<"] "<<plod.getFileName(i)<<std::endl;
@ -56,7 +122,7 @@ public:
osg::ref_ptr<osg::Node> node = osgDB::readNodeFile(filename);
if (node.valid()) node->accept(*this);
if (!s_ExitApplication && node.valid()) node->accept(*this);
}
}
@ -65,13 +131,39 @@ public:
protected:
void convertXYZToLatLongHeight(osg::EllipsoidModel* em, osg::Vec3d& v)
{
em->convertXYZToLatLongHeight(v.x(), v.y(), v.z(),
v.x(), v.y(), v.z());
v.x() = osg::RadiansToDegrees(v.x());
v.y() = osg::RadiansToDegrees(v.y());
}
unsigned int _maxLevels;
unsigned int _currentLevel;
};
static void signalHandler(int sig)
{
printf("\nCaught signal %d, requesting exit...\n\n",sig);
s_ExitApplication = true;
}
int main( int argc, char **argv )
{
#ifndef _WIN32
signal(SIGHUP, signalHandler);
signal(SIGQUIT, signalHandler);
signal(SIGKILL, signalHandler);
signal(SIGUSR1, signalHandler);
signal(SIGUSR2, signalHandler);
#endif
signal(SIGABRT, signalHandler);
signal(SIGINT, signalHandler);
signal(SIGTERM, signalHandler);
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
@ -112,6 +204,11 @@ int main( int argc, char **argv )
loadedModel->accept(ldv);
if (s_ExitApplication)
{
std::cout<<"osgfilecache cleanly exited in response to signal."<<std::endl;
}
return 0;
}