FGFS-4.1/OpenSceneGraph
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Added support for specifying external overlay file.

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This commit is contained in:
Robert Osfield
2007-06-10 20:46:53 +00:00
parent d8a3d7aa4e
commit 607ecf17cc
1 changed files with 122 additions and 66 deletions
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188
examples/osgsimulation/osgsimulation.cpp
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@@ -286,27 +286,45 @@ int main(int argc, char **argv)
return 1;
}
osg::ref_ptr<osgGA::NodeTrackerManipulator> tm;
std::string overlayFilename;
while(arguments.read("--overlay", overlayFilename)) {}
// read the scene from the list of file specified commandline args.
osg::ref_ptr<osg::Node> root = osgDB::readNodeFiles(arguments);
if (!root) root = createEarth();
if (!root) return 0;
// add a viewport to the viewer and attach the scene graph.
viewer.setSceneData(root.get());
osg::ref_ptr<osgGA::NodeTrackerManipulator> tm;
osg::CoordinateSystemNode* csn = dynamic_cast<osg::CoordinateSystemNode*>(root.get());
if (csn)
if (!overlayFilename.empty())
{
//osg::Object *pObj = osgDB::readObjectFile("alaska_clean.shp");
//osg::ref_ptr<osg::Geode> shapefile = dynamic_cast<osg::Geode*> (pObj);
//
//ConvertLatLon2EllipsoidCoordinates latlon2em;
//shapefile->accept(latlon2em);
osg::ref_ptr<osgSim::OverlayNode> overlayNode;
if (useOverlay)
osg::ref_ptr<osg::Node> shapefile = osgDB::readNodeFile(overlayFilename);
if (!shapefile)
{
overlayNode = new osgSim::OverlayNode(technique);
osg::notify(osg::NOTICE)<<"File `"<<overlayFilename<<"` not found"<<std::endl;
return 1;
}
osg::CoordinateSystemNode* csn = dynamic_cast<osg::CoordinateSystemNode*>(root.get());
if (csn)
{
osgSim::OverlayNode* overlayNode = new osgSim::OverlayNode(technique);
overlayNode->getOrCreateStateSet()->setTextureAttribute(1, new osg::TexEnv(osg::TexEnv::DECAL));
overlayNode->setOverlaySubgraph(shapefile.get());
overlayNode->setOverlayTextureSizeHint(1024);
// insert the OverlayNode between the coordinate system node and its children.
for(unsigned int i=0; i<csn->getNumChildren(); ++i)
{
@@ -314,66 +332,104 @@ int main(int argc, char **argv)
}
csn->removeChildren(0, csn->getNumChildren());
csn->addChild(overlayNode.get());
// tell the overlay node to continously update its overlay texture
// as we know we'll be tracking a moving target.
overlayNode->setContinuousUpdate(true);
}
osg::Node* cessna = osgDB::readNodeFile("cessna.osg");
if (cessna)
{
double s = 200000.0 / cessna->getBound().radius();
osg::MatrixTransform* scaler = new osg::MatrixTransform;
scaler->addChild(cessna);
scaler->setMatrix(osg::Matrixd::scale(s,s,s)*osg::Matrixd::rotate(rotation));
scaler->getOrCreateStateSet()->setMode(GL_RESCALE_NORMAL,osg::StateAttribute::ON);
if (false)
{
osgSim::SphereSegment* ss = new osgSim::SphereSegment(
osg::Vec3(0.0f,0.0f,0.0f), // center
19.9f, // radius
osg::DegreesToRadians(135.0f),
osg::DegreesToRadians(240.0f),
osg::DegreesToRadians(-10.0f),
osg::DegreesToRadians(30.0f),
60);
scaler->addChild(ss);
}
csn->addChild(overlayNode);
osg::MatrixTransform* mt = new osg::MatrixTransform;
mt->addChild(scaler);
if (!nc) nc = new ModelPositionCallback(speed);
mt->setUpdateCallback(nc);
csn->addChild(mt);
// if we are using an overaly node, use the cessna subgraph as the overlay subgraph
if (overlayNode.valid())
{
overlayNode->setOverlaySubgraph(mt);
}
tm = new osgGA::NodeTrackerManipulator;
tm->setTrackerMode(trackerMode);
tm->setRotationMode(rotationMode);
tm->setTrackNode(scaler);
viewer.setSceneData(csn);
}
else
{
std::cout<<"Failed to read cessna.osg"<<std::endl;
}
}
osgSim::OverlayNode* overlayNode = new osgSim::OverlayNode(technique);
overlayNode->getOrCreateStateSet()->setTextureAttribute(1, new osg::TexEnv(osg::TexEnv::DECAL));
overlayNode->setOverlaySubgraph(shapefile.get());
overlayNode->setOverlayTextureSizeHint(1024);
overlayNode->addChild(root.get());
viewer.setSceneData(overlayNode);
}
}
else
{
// add a viewport to the viewer and attach the scene graph.
viewer.setSceneData(root.get());
osg::CoordinateSystemNode* csn = dynamic_cast<osg::CoordinateSystemNode*>(root.get());
if (csn)
{
osg::ref_ptr<osgSim::OverlayNode> overlayNode;
if (useOverlay)
{
overlayNode = new osgSim::OverlayNode(technique);
// insert the OverlayNode between the coordinate system node and its children.
for(unsigned int i=0; i<csn->getNumChildren(); ++i)
{
overlayNode->addChild( csn->getChild(i) );
}
csn->removeChildren(0, csn->getNumChildren());
csn->addChild(overlayNode.get());
// tell the overlay node to continously update its overlay texture
// as we know we'll be tracking a moving target.
overlayNode->setContinuousUpdate(true);
}
osg::Node* cessna = osgDB::readNodeFile("cessna.osg");
if (cessna)
{
double s = 200000.0 / cessna->getBound().radius();
osg::MatrixTransform* scaler = new osg::MatrixTransform;
scaler->addChild(cessna);
scaler->setMatrix(osg::Matrixd::scale(s,s,s)*osg::Matrixd::rotate(rotation));
scaler->getOrCreateStateSet()->setMode(GL_RESCALE_NORMAL,osg::StateAttribute::ON);
if (false)
{
osgSim::SphereSegment* ss = new osgSim::SphereSegment(
osg::Vec3(0.0f,0.0f,0.0f), // center
19.9f, // radius
osg::DegreesToRadians(135.0f),
osg::DegreesToRadians(240.0f),
osg::DegreesToRadians(-10.0f),
osg::DegreesToRadians(30.0f),
60);
scaler->addChild(ss);
}
osg::MatrixTransform* mt = new osg::MatrixTransform;
mt->addChild(scaler);
if (!nc) nc = new ModelPositionCallback(speed);
mt->setUpdateCallback(nc);
csn->addChild(mt);
// if we are using an overaly node, use the cessna subgraph as the overlay subgraph
if (overlayNode.valid())
{
overlayNode->setOverlaySubgraph(mt);
}
tm = new osgGA::NodeTrackerManipulator;
tm->setTrackerMode(trackerMode);
tm->setRotationMode(rotationMode);
tm->setTrackNode(scaler);
}
else
{
std::cout<<"Failed to read cessna.osg"<<std::endl;
}
}
}
// set up camera manipulators.
{