Added support for basic viewer configuration files

include/osg/View

@@ -34,6 +34,9 @@ class OSG_EXPORT View : public osg::Object
         View(const osg::View& view, const osg::CopyOp& copyop=CopyOp::SHALLOW_COPY);
 
         META_Object(osg,View);
+        
+        /** Take all the settings, Camera and Slaves from the passed in view, leaving it empty. */
+        virtual void take(View& rhs);
 
         /** Set the Stats object used for collect various frame related timing and scene graph stats.*/
         void setStats(osg::Stats* stats) { _stats = stats; }

include/osgViewer/View

@@ -35,6 +35,9 @@ class OSGVIEWER_EXPORT View : public osg::View, public osgGA::GUIActionAdapter
         View(const osgViewer::View& view, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
 
         META_Object(osgViewer,View);
+        
+        /** Take all the settings, Camera and Slaves from the passed in view, leaving it empty. */
+        virtual void take(osg::View& rhs);
 
         virtual void setStartTick(osg::Timer_t tick);
         osg::Timer_t getStartTick() const { return _startTick; }

include/osgViewer/Viewer

@@ -38,6 +38,9 @@ class OSGVIEWER_EXPORT Viewer : public osgViewer::View
         
         META_Object(osgViewer,Viewer);
 
+        /** Take all the settings, Camera and Slaves from the passed in view(er), leaving it empty. */
+        virtual void take(View& rhs);
+
         /** read the viewer configuration from a configuration file.*/
         bool readConfiguration(const std::string& filename);
         

src/osg/View.cpp

@@ -85,6 +85,29 @@ View::~View()
     osg::notify(osg::INFO)<<"Done destructing osg::View"<<std::endl;
 }
 
+void View::take(osg::View& rhs)
+{
+    // copy across the contents first
+    _lightingMode = rhs._lightingMode;
+    _light = rhs._light;
+    _camera = rhs._camera;
+    _slaves = rhs._slaves;
+
+    // update the cameras so they all now see this View as their parent View    
+    if (_camera.valid()) _camera->setView(this);
+    
+    for(unsigned int i=0; i<_slaves.size(); ++i)
+    {
+        if (_slaves[i]._camera.valid()) _slaves[i]._camera->setView(this);
+    }
+
+    // then clear the passing in view.
+    rhs._light = 0;
+    rhs._camera = 0;
+    rhs._slaves.clear();
+}
+
+
 void View::setLightingMode(LightingMode lightingMode)
 {
     _lightingMode = lightingMode;

src/osgPlugins/osgViewer/View.cpp

@@ -6,6 +6,7 @@
 #include <osgDB/Registry>
 #include <osgDB/Input>
 #include <osgDB/Output>
+#include <osgDB/ReadFile>
 #include <osgDB/ParameterOutput>
 
 bool View_readLocalData(osg::Object &obj, osgDB::Input &fr);
@@ -25,6 +26,73 @@ bool View_readLocalData(osg::Object &obj, osgDB::Input &fr)
     osgViewer::View& view = static_cast<osgViewer::View&>(obj);
     bool iteratorAdvanced = false;
 
+    bool matchedFirst = false;
+    if ((matchedFirst = fr.matchSequence("setUpViewFor3DSphericalDisplay {")) ||
+        fr.matchSequence("setUpViewForPanoramicSphericalDisplay {"))
+    {
+        double radius=1.0;
+        double collar=0.45;
+        unsigned int screenNum=0;
+        std::string filename;
+        osg::Image* intensityMap=0;
+        int entry = fr[0].getNoNestedBrackets();
+
+        fr += 2;
+
+        while (!fr.eof() && fr[0].getNoNestedBrackets()>entry)
+        {
+            bool local_itrAdvanced = false;
+            if (fr.read("radius",radius)) local_itrAdvanced = true;
+            if (fr.read("collar",collar)) local_itrAdvanced = true;
+            if (fr.read("screenNum",screenNum)) local_itrAdvanced = true;
+            if (fr.read("intensityMap",filename)) local_itrAdvanced = true;
+            
+            if (!local_itrAdvanced) ++fr;
+        }
+        
+        // skip trainling '}'
+        ++fr;
+        
+        iteratorAdvanced = true;
+        
+        if (!filename.empty())
+        {
+            intensityMap = osgDB::readImageFile(filename);
+        }
+
+        if (matchedFirst) view.setUpViewFor3DSphericalDisplay(radius, collar, screenNum, intensityMap);
+        else view.setUpViewForPanoramicSphericalDisplay(radius, collar, screenNum, intensityMap);
+    }
+
+    int x = 0;
+    int y = 0;
+    int width = 128;
+    int height = 1024;
+    unsigned int screenNum = 0;
+    
+    if (fr.read("setUpViewOnSingleScreen",screenNum))
+    {
+        view.setUpViewOnSingleScreen(screenNum);
+        iteratorAdvanced = true;
+    }
+    
+    if (fr.read("setUpViewAcrossAllScreens"))
+    {
+        view.setUpViewAcrossAllScreens();
+        iteratorAdvanced = true;
+    }
+    
+    if (fr.read("setUpViewInWindow",x,y,width,height,screenNum))
+    {
+        view.setUpViewInWindow(x, y, width, height, screenNum);
+    }
+    
+    if (fr.read("setUpViewInWindow",x,y,width,height))
+    {
+        view.setUpViewInWindow(x, y, width, height);
+    }
+
+
     osg::ref_ptr<osg::Object> readObject;
     while((readObject=fr.readObjectOfType(osgDB::type_wrapper<osg::Camera>())).valid())
     {
@@ -52,7 +120,6 @@ bool View_readLocalData(osg::Object &obj, osgDB::Input &fr)
 
     }
     
-
     return iteratorAdvanced;
 }
 

src/osgViewer/View.cpp

@@ -164,6 +164,40 @@ View::~View()
     osg::notify(osg::INFO)<<"Destructing osgViewer::View"<<std::endl;
 }
 
+void View::take(osg::View& rhs)
+{
+    osg::View::take(rhs);
+
+    osgViewer::View* rhs_osgViewer = dynamic_cast<osgViewer::View*>(&rhs);    
+    if (rhs_osgViewer)
+    {
+        // copy across rhs
+        _startTick = rhs_osgViewer->_startTick;
+        _frameStamp = rhs_osgViewer->_frameStamp;
+
+        _scene = rhs_osgViewer->_scene;
+        _cameraManipulator = rhs_osgViewer->_cameraManipulator;
+        _eventHandlers = rhs_osgViewer->_eventHandlers;
+
+        _coordinateSystemNodePath = rhs_osgViewer->_coordinateSystemNodePath;
+
+        _displaySettings = rhs_osgViewer->_displaySettings;
+        _fusionDistanceMode = rhs_osgViewer->_fusionDistanceMode;
+        _fusionDistanceValue = rhs_osgViewer->_fusionDistanceValue;
+        
+        
+        // clear rhs
+        rhs_osgViewer->_frameStamp = 0;
+        rhs_osgViewer->_scene = 0;
+        rhs_osgViewer->_cameraManipulator = 0;
+        rhs_osgViewer->_eventHandlers.clear();
+        
+        rhs_osgViewer->_coordinateSystemNodePath.clear();
+        
+        rhs_osgViewer->_displaySettings;
+    }
+
+}
 
 osg::GraphicsOperation* View::createRenderer(osg::Camera* camera)
 {

src/osgViewer/Viewer.cpp

@@ -178,9 +178,54 @@ Viewer::~Viewer()
 
 }
 
+void Viewer::take(View& rhs)
+{
+    osgViewer::View::take(rhs);
+    
+    osgViewer::Viewer* rhs_viewer = dynamic_cast<osgViewer::Viewer*>(&rhs);
+    if (rhs_viewer)
+    {
+#if 1
+        // variables left to take.
+        _firstFrame = rhs_viewer->_firstFrame;
+        _done = rhs_viewer->_done;
+        _keyEventSetsDone = rhs_viewer->_keyEventSetsDone;
+        _quitEventSetsDone = rhs_viewer->_quitEventSetsDone;
+        _threadingModel = rhs_viewer->_threadingModel;
+        _threadsRunning = rhs_viewer->_threadsRunning;
+        _endBarrierPosition = rhs_viewer->_endBarrierPosition;
+        _startRenderingBarrier = rhs_viewer->_startRenderingBarrier;
+        _endRenderingDispatchBarrier = rhs_viewer->_endRenderingDispatchBarrier;
+        _endDynamicDrawBlock = rhs_viewer->_endDynamicDrawBlock;
+        _numWindowsOpenAtLastSetUpThreading = rhs_viewer->_numWindowsOpenAtLastSetUpThreading;
+        _cameraWithFocus = rhs_viewer->_cameraWithFocus;
+        _eventVisitor = rhs_viewer->_eventVisitor;
+        _updateOperations = rhs_viewer->_updateOperations;
+        _updateVisitor = rhs_viewer->_updateVisitor;
+        _realizeOperation = rhs_viewer->_realizeOperation;
+        _currentContext = rhs_viewer->_currentContext;
+
+
+        // objects to clear
+        rhs_viewer->_done = true;
+        rhs_viewer->_startRenderingBarrier = 0;
+        rhs_viewer->_endRenderingDispatchBarrier = 0;
+        rhs_viewer->_endDynamicDrawBlock = 0;
+        rhs_viewer->_numWindowsOpenAtLastSetUpThreading = 0;
+        rhs_viewer->_cameraWithFocus = 0;
+        rhs_viewer->_eventVisitor = 0;
+        rhs_viewer->_updateOperations = 0;
+        rhs_viewer->_updateVisitor = 0;
+        rhs_viewer->_realizeOperation = 0;
+        rhs_viewer->_currentContext = 0;
+
+#endif
+    }
+}
+
 bool Viewer::readConfiguration(const std::string& filename)
 {
-    osg::notify(osg::NOTICE)<<"Viewer::readConfiguration("<<filename<<")"<<std::endl;
+    osg::notify(osg::INFO)<<"Viewer::readConfiguration("<<filename<<")"<<std::endl;
     
     osg::ref_ptr<osg::Object> object = osgDB::readObjectFile(filename);
     if (!object) 
@@ -196,14 +241,11 @@ bool Viewer::readConfiguration(const std::string& filename)
         return false;
     }
     
-    osg::notify(osg::NOTICE)<<"Loaded object =  "<<object->className()<<std::endl;
-
     View* view = dynamic_cast<osgViewer::View*>(object.get());
     if (view)
     {
-        Viewer* viewer = dynamic_cast<Viewer*>(object.get());
-        osg::notify(osg::NOTICE)<<"  ViewerPtr =  "<<viewer<<std::endl;
-        osg::notify(osg::NOTICE)<<"  ViewPtr =  "<<view<<std::endl;
+        take(*view);
+
         return true;
     }
     else
@@ -864,13 +906,15 @@ void Viewer::getCameras(Cameras& cameras, bool onlyActive)
 {
     cameras.clear();
     
-    if (!onlyActive || (_camera->getGraphicsContext() && _camera->getGraphicsContext()->valid()) ) cameras.push_back(_camera.get());
+    if (_camera.valid() && 
+        (!onlyActive || (_camera->getGraphicsContext() && _camera->getGraphicsContext()->valid())) ) cameras.push_back(_camera.get());
 
     for(Slaves::iterator itr = _slaves.begin();
         itr != _slaves.end();
         ++itr)
     {
-        if (!onlyActive || (itr->_camera->getGraphicsContext() && itr->_camera->getGraphicsContext()->valid()) ) cameras.push_back(itr->_camera.get());
+        if (itr->_camera.valid() &&
+            (!onlyActive || (itr->_camera->getGraphicsContext() && itr->_camera->getGraphicsContext()->valid())) ) cameras.push_back(itr->_camera.get());
     }
         
 }