Ported osgGLUT based src/Demos across to being osgProducer based, and placed

them in the new examples/ directory.

examples/osglightpoint/osglightpoint.cpp

@@ -0,0 +1,189 @@
+#include <osg/GL>
+#include <osgProducer/Viewer>
+
+#include <osg/Transform>
+#include <osg/Billboard>
+#include <osg/Geode>
+#include <osg/Group>
+#include <osg/Notify>
+
+#include <osgDB/Registry>
+#include <osgDB/ReadFile>
+
+#include <osgGA/TrackballManipulator>
+#include <osgGA/FlightManipulator>
+#include <osgGA/DriveManipulator>
+
+#include <osgUtil/Optimizer>
+
+#include <osgSim/LightPointNode>
+
+
+#define INTERPOLATE(member) lp.member = start.member*rstart + end.member*rend;
+
+void addToLightPointNode(osgSim::LightPointNode& lpn,osgSim::LightPoint& start,osgSim::LightPoint& end,unsigned int noSteps)
+{
+    if (noSteps<=1)
+    {
+        lpn.addLightPoint(start);
+        return;
+    }
+    
+    float rend = 0.0f;
+    float rdelta = 1.0f/((float)noSteps-1.0f);
+    
+    lpn._lightPointList.reserve(noSteps);
+    
+    for(unsigned int i=0;i<noSteps;++i,rend+=rdelta)
+    {
+        float rstart = 1.0f-rend;
+        osgSim::LightPoint lp(start);
+        INTERPOLATE(_position)
+        INTERPOLATE(_intensity);
+        INTERPOLATE(_color);
+        INTERPOLATE(_radius);
+        //INTERPOLATE(_minPixelSize);
+        //INTERPOLATE(_maxPixelSize);
+//        INTERPOLATE(_maxVisibileDistance2);
+
+        lpn.addLightPoint(lp);
+        
+   }
+}
+
+#undef INTERPOLATE
+
+osg::Node* createLightPointsDatabase()
+{
+    osgSim::LightPoint start;
+    osgSim::LightPoint end;
+
+    start._position.set(0.0f,0.0f,0.0f);
+    start._color.set(1.0f,0.0f,0.0f,1.0f);
+    
+    end._position.set(1000.0f,0.0f,0.0f);
+    end._color.set(1.0f,1.0f,1.0f,1.0f);
+    
+    osg::Transform* transform = new osg::Transform;
+
+    osg::Vec3 start_delta(0.0f,10.0f,0.0f);
+    osg::Vec3 end_delta(0.0f,10.0f,1.0f);
+
+    int noStepsX = 100;
+    int noStepsY = 100;
+
+//     osgSim::BlinkSequence* bs = new osgSim::BlinkSequence;
+//     bs->addPulse(1.0,osg::Vec4(1.0f,0.0f,0.0f,1.0f));
+//     bs->addPulse(0.5,osg::Vec4(0.0f,0.0f,0.0f,0.0f)); // off
+//     bs->addPulse(1.5,osg::Vec4(1.0f,1.0f,0.0f,1.0f));
+//     bs->addPulse(0.5,osg::Vec4(0.0f,0.0f,0.0f,0.0f)); // off
+//     bs->addPulse(1.0,osg::Vec4(1.0f,1.0f,1.0f,1.0f));
+//     bs->addPulse(0.5,osg::Vec4(0.0f,0.0f,0.0f,0.0f)); // off
+    
+
+//    osgSim::Sector* sector = new osgSim::ConeSector(osg::Vec3(0.0f,0.0f,1.0f),osg::inDegrees(45.0),osg::inDegrees(45.0));
+//    osgSim::Sector* sector = new osgSim::ElevationSector(-osg::inDegrees(45.0),osg::inDegrees(45.0),osg::inDegrees(45.0));
+//    osgSim::Sector* sector = new osgSim::AzimSector(-osg::inDegrees(45.0),osg::inDegrees(45.0),osg::inDegrees(90.0));
+//     osgSim::Sector* sector = new osgSim::AzimElevationSector(osg::inDegrees(180),osg::inDegrees(90), // azim range
+//                                                                 osg::inDegrees(0.0),osg::inDegrees(90.0), // elevation range
+//                                                                 osg::inDegrees(5.0));
+
+    for(int i=0;i<noStepsY;++i)
+    {
+
+//         osgSim::BlinkSequence* local_bs = new osgSim::BlinkSequence(*bs);
+//         local_bs->setSequenceGroup(new osgSim::BlinkSequence::SequenceGroup((double)i*0.1));        
+//         start._blinkSequence = local_bs;
+
+//        start._sector = sector;
+
+        osgSim::LightPointNode* lpn = new osgSim::LightPointNode;
+        addToLightPointNode(*lpn,start,end,noStepsX);
+        
+        start._position += start_delta;
+        end._position += end_delta;
+        
+        transform->addChild(lpn);    
+    }
+        
+    osg::Group* group = new osg::Group;
+    group->addChild(transform);
+    
+    
+    return group;
+}
+
+
+int main( int argc, char **argv )
+{
+
+    // use an ArgumentParser object to manage the program arguments.
+    osg::ArgumentParser arguments(&argc,argv);
+
+    // set up the usage document, in case we need to print out how to use this program.
+    arguments.getApplicationUsage()->setCommandLineUsage(arguments.getProgramName()+" [options] filename ...");
+    arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
+
+    // construct the viewer.
+    osgProducer::Viewer viewer(arguments);
+
+    // set up the value with sensible default event handlers.
+    viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS);
+
+    // get details on keyboard and mouse bindings used by the viewer.
+    viewer.getUsage(*arguments.getApplicationUsage());
+
+    // if user request help write it out to cout.
+    if (arguments.read("-h") || arguments.read("--help"))
+    {
+        arguments.getApplicationUsage()->write(std::cout);
+        return 1;
+    }
+
+    // any option left unread are converted into errors to write out later.
+    arguments.reportRemainingOptionsAsUnrecognized();
+
+    // report any errors if they have occured when parsing the program aguments.
+    if (arguments.errors())
+    {
+        arguments.writeErrorMessages(std::cout);
+        return 1;
+    }
+
+
+    osg::Group* rootnode = new osg::Group;
+
+    // load the nodes from the commandline arguments.
+    rootnode->addChild(osgDB::readNodeFiles(arguments));
+    rootnode->addChild(createLightPointsDatabase());
+    if (!rootnode)
+    {
+        return 1;
+    }
+    
+    // run optimization over the scene graph
+    osgUtil::Optimizer optimzer;
+    optimzer.optimize(rootnode);
+     
+    // add a viewport to the viewer and attach the scene graph.
+    viewer.setSceneData( rootnode );
+    
+    // create the windows and run the threads.
+    viewer.realize(Producer::CameraGroup::ThreadPerCamera);
+
+    while( !viewer.done() )
+    {
+        // wait for all cull and draw threads to complete.
+        viewer.sync();
+
+        // update the scene by traversing it with the the update visitor which will
+        // call all node update callbacks and animations.
+        viewer.update();
+         
+        // fire off the cull and draw traversals of the scene.
+        viewer.frame();
+        
+    }
+
+    return 0;
+}