From 4f5a421c819171dd5a5417e178963961574f3599 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 5 Jun 2007 19:10:18 +0000
Subject: [PATCH] Added support for CompositeViewer

---
 examples/osgviewerQT/osgviewerQT.cpp | 72 +++++++++++++++++++++++++---
 1 file changed, 66 insertions(+), 6 deletions(-)

diff --git a/examples/osgviewerQT/osgviewerQT.cpp b/examples/osgviewerQT/osgviewerQT.cpp
index aee7508c1..86c3454f6 100644
--- a/examples/osgviewerQT/osgviewerQT.cpp
+++ b/examples/osgviewerQT/osgviewerQT.cpp
@@ -1,6 +1,7 @@
 // C++ source file - (C) 2003 Robert Osfield, released under the OSGPL.
 
 #include <osgViewer/Viewer>
+#include <osgViewer/CompositeViewer>
 #include <osgViewer/StatsHandler>
 #include <osgGA/TrackballManipulator>
 #include <osgDB/ReadFile>
@@ -129,7 +130,29 @@ class ViewerQT : public osgViewer::Viewer, public AdapterWidget
     protected:
 
         QTimer _timer;
+};
+
+class CompositeViewerQT : public osgViewer::CompositeViewer, public AdapterWidget
+{
+    public:
+
+        CompositeViewerQT(QWidget * parent = 0, const char * name = 0, const QGLWidget * shareWidget = 0, WFlags f = 0):
+            AdapterWidget( parent, name, shareWidget, f )
+        {
+            setThreadingModel(osgViewer::CompositeViewer::SingleThreaded);
+
+            connect(&_timer, SIGNAL(timeout()), this, SLOT(updateGL()));
+            _timer.start(10);
+        }
+
+        virtual void paintGL()
+        {
+            frame();
+        }
     
+    protected:
+
+        QTimer _timer;
 };
 
 int main( int argc, char **argv )
@@ -142,22 +165,59 @@ int main( int argc, char **argv )
         return 1;
     }
 
+    osg::ArgumentParser arguments(&argc, argv);
+
     // load the scene.
-    osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFile(argv[1]);
+    osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
     if (!loadedModel)
     {
         std::cout << argv[0] <<": No data loaded." << std::endl;
         return 1;
     }
+    
+    
+    if (arguments.read("--CompositeViewer"))
+    {
+        CompositeViewerQT* viewerWindow = new CompositeViewerQT;
 
+        unsigned int width = viewerWindow->width();
+        unsigned int height = viewerWindow->height();
+        
+        {
+            osgViewer::View* view1 = new osgViewer::View;
+            view1->getCamera()->setGraphicsContext(viewerWindow->getGraphicsWindow());
+            view1->getCamera()->setProjectionMatrixAsPerspective(30.0f, static_cast<double>(width)/static_cast<double>(height/2), 1.0, 1000.0);
+            view1->getCamera()->setViewport(new osg::Viewport(0,0,width,height/2));
+            view1->setCameraManipulator(new osgGA::TrackballManipulator);
+            view1->setSceneData(loadedModel.get());
+            
+            viewerWindow->addView(view1);
+        }
+        
+        {
+            osgViewer::View* view2 = new osgViewer::View;
+            view2->getCamera()->setGraphicsContext(viewerWindow->getGraphicsWindow());
+            view2->getCamera()->setProjectionMatrixAsPerspective(30.0f, static_cast<double>(width)/static_cast<double>(height/2), 1.0, 1000.0);
+            view2->getCamera()->setViewport(new osg::Viewport(0,height/2,width,height/2));
+            view2->setCameraManipulator(new osgGA::TrackballManipulator);
+            view2->setSceneData(loadedModel.get());
+            
+            viewerWindow->addView(view2);
+        }
 
-    ViewerQT* viewerWindow = new ViewerQT;
+        viewerWindow->show();
+    }
+    else
+    {
+        ViewerQT* viewerWindow = new ViewerQT;
 
-    viewerWindow->setSceneData(loadedModel.get());
-    viewerWindow->setCameraManipulator(new osgGA::TrackballManipulator);
-    viewerWindow->addEventHandler(new osgViewer::StatsHandler);
+        viewerWindow->setCameraManipulator(new osgGA::TrackballManipulator);
+        viewerWindow->setSceneData(loadedModel.get());
 
-    viewerWindow->show();
+        viewerWindow->show();
+    }    
+    
+    
     a.connect( &a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()) );
    
     return a.exec();