Changeset 4440 for OpenSceneGraph/trunk/examples/osgcamera/osgcamera.cpp

Timestamp:

08/18/05 10:37:01 (8 years ago)

Author:

robert

Message:

Implemented more SceneView? operations in main as a move to try and replace SceneView? usage in this example.

Files:

• OpenSceneGraph/trunk/examples/osgcamera/osgcamera.cpp (modified) (5 diffs)

OpenSceneGraph/trunk/examples/osgcamera/osgcamera.cpp

@@ -13 +13 @@
 
 #include <iostream>
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+//
+//
+//  **************** THIS IS AN EXPERIMENTAL IMPLEMENTATION ***************
+//  ************************** PLEASE DO NOT COPY  ************************
+//
+//
+///////////////////////////////////////////////////////////////////////////////
+
 
 #if 1
@@ -54 +66 @@
     // create the view of the scene.
     osg::ref_ptr<osg::CameraNode> camera = new osg::CameraNode;
+    camera->setRenderOrder(osg::CameraNode::NESTED_RENDER);
+    camera->setClearColor(osg::Vec4(1.0f,1.0f,0.0f,1.0f));
+    camera->setCullingActive(false);
+    
     camera->addChild(loadedModel.get());
+    
+    
 
     // initialize the view to look at the center of the scene graph
@@ -72 +90 @@
     osg::ref_ptr<osgUtil::CullVisitor> cullVisitor = new osgUtil::CullVisitor;
 
-    cullVisitor->setRenderGraph(new osgUtil::RenderGraph);
+    osg::ref_ptr<osgUtil::RenderGraph> renderGraph = new osgUtil::RenderGraph;
+    cullVisitor->setRenderGraph(renderGraph.get());
 
     osg::ref_ptr<osgUtil::RenderStage> renderStage = new osgUtil::RenderStage;
@@ -86 +105 @@
         
         updateVisitor->reset();
-        cullVisitor->reset();
-        
+                
         // pass frame stamp to the SceneView so that the update, cull and draw traversals all use the same FrameStamp
         updateVisitor->setFrameStamp(frameStamp.get());
         updateVisitor->setTraversalNumber(frameStamp->getFrameNumber());
 
+        
+        // set the view
+        camera->setViewMatrix(viewMatrix);
+
+        // do the update traversal the scene graph - such as updating animations
+        camera->accept(*updateVisitor);
+        
+        cullVisitor->reset();
         cullVisitor->setFrameStamp(frameStamp.get());
         cullVisitor->setTraversalNumber(frameStamp->getFrameNumber());
+
         
         // update the viewport dimensions, incase the window has been resized.
         camera->setViewport(0,0,traits->_width,traits->_height);
+
+        renderGraph->clean();
+        renderStage->reset();
         renderStage->setViewport(camera->getViewport());
         
+        osg::ref_ptr<osg::RefMatrix> proj = new osg::RefMatrix(camera->getProjectionMatrix());
+        osg::ref_ptr<osg::RefMatrix> mv = new osg::RefMatrix(camera->getViewMatrix());
+
         cullVisitor->pushViewport(camera->getViewport());
-        
-        // set the view
-        camera->setViewMatrix(viewMatrix);
-
-        // do the update traversal the scene graph - such as updating animations
-        camera->accept(*updateVisitor);
-        
+        cullVisitor->pushProjectionMatrix(proj.get());
+        cullVisitor->pushModelViewMatrix(mv.get());
+
         // do the cull traversal, collect all objects in the view frustum into a sorted set of rendering bins
-        camera->accept(*cullVisitor);
-        
+        //camera->accept(*cullVisitor);
+        loadedModel->accept(*cullVisitor);
+
+        cullVisitor->popModelViewMatrix();
+        cullVisitor->popProjectionMatrix();
         cullVisitor->popViewport();
         
+        renderStage->sort();
+
+        // prune out any empty RenderGraph children.
+        // note, this would be not required if the rendergraph had been
+        // reset at the start of each frame (see top of this method) but
+        // a clean has been used instead to try to minimize the amount of
+        // allocation and deleteing of the RenderGraph nodes.
+        renderGraph->prune();
+        
+        renderStage->setClearColor(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
+        
+        gfxc->getState()->setInitialViewMatrix(mv.get());
+
+        std::cout<<"before"<<std::endl;
+
         // draw traversal
         osgUtil::RenderLeaf* previous = NULL;
@@ -118 +165 @@
         // Swap Buffers
         gfxc->swapBuffers();
+        
+        std::cout<<"swap"<<std::endl;
     }