Changeset 10098 for OpenSceneGraph/trunk/include/osgViewer/ViewerBase

Timestamp:

04/24/09 18:20:50 (4 years ago)

Author:

robert

Message:

Introduce new run frame rate management support to allow control of maximum frame rate and to support on demand rendering of frames

Files:

• OpenSceneGraph/trunk/include/osgViewer/ViewerBase (modified) (5 diffs)

OpenSceneGraph/trunk/include/osgViewer/ViewerBase

@@ -200 +200 @@
         void checkWindowStatus();
 
-
+        enum FrameScheme
+        {
+            ON_DEMAND,
+            CONTINUOUS
+        };
+
+        void setRunFrameScheme(FrameScheme fs) { _runFrameScheme = fs; }
+        FrameScheme getRunFrameScheme() const { return _runFrameScheme; }
+
+        void setRunMaxFrameRate(double frameRate) { _runMaxFrameRate = frameRate; }
+        double getRunMaxFrameRate() const { return _runMaxFrameRate; }
 
         /** Execute a main frame loop.
@@ -207 +217 @@
           * and installs trackball manipulator if one is not already assigned.
           */
-        virtual int run() = 0;
+        virtual int run();
+
+        /** check to see if the new frame is required, called by run(..) when FrameScheme is set to ON_DEMAND.*/
+        virtual bool checkNeedToDoFrame() = 0;
 
         /** Render a complete new frame.
@@ -250 +263 @@
         
     protected:
-    
+
+        void viewerBaseInit();
+
+        friend class osgViewer::View;
+
         inline void makeCurrent(osg::GraphicsContext* gc)
         {
             if (_currentContext==gc) return;
-            
+
             releaseContext();
-            
+
             if (gc && gc->valid() && gc->makeCurrent()) _currentContext = gc;
         }
-        
+
         inline void releaseContext()
         {
@@ -276 +293 @@
         bool                                                _quitEventSetsDone;
         bool                                                _releaseContextAtEndOfFrameHint;
-        
+
         ThreadingModel                                      _threadingModel;
         bool                                                _threadsRunning;
+
+        bool                                                _requestRedraw;
+        bool                                                _requestContinousUpdate;
+
+        FrameScheme                                         _runFrameScheme;
+        double                                              _runMaxFrameRate;
+
 
         BarrierPosition                                     _endBarrierPosition;
@@ -285 +309 @@
         osg::ref_ptr<osg::BarrierOperation>                 _endRenderingDispatchBarrier;
         osg::ref_ptr<osg::EndOfDynamicDrawBlock>            _endDynamicDrawBlock;
-        
+
         osg::ref_ptr<osgGA::EventVisitor>                   _eventVisitor;
-        
+
         osg::ref_ptr<osg::OperationQueue>                   _updateOperations;
         osg::ref_ptr<osgUtil::UpdateVisitor>                _updateVisitor;
-        
+
         osg::ref_ptr<osg::Operation>                        _realizeOperation;
         osg::ref_ptr<osgUtil::IncrementalCompileOperation>  _incrementalCompileOperation;