Added osgsimplepager example program

Make/makedirdefs

@@ -166,6 +166,7 @@ EXAMPLE_DIRS = \
 	osgspheresegment\
 	osgsimulation\
 	osgsimple\
+	osgsimplepager\
 	osgshaders\
 	osgshadowtexture\
 	osgdepthshadow\

VisualStudio/VisualStudio.dsw

@@ -1662,6 +1662,33 @@ Package=<4>
 
 ###############################################################################
 
+Project: "Example osgsimplepager"=.\examples\osgsimplepager\osgsimplepager.dsp - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+    Begin Project Dependency
+    Project_Dep_Name Core osg
+    End Project Dependency
+    Begin Project Dependency
+    Project_Dep_Name Core osgDB
+    End Project Dependency
+    Begin Project Dependency
+    Project_Dep_Name Core osgUtil
+    End Project Dependency
+    Begin Project Dependency
+    Project_Dep_Name Core osgFX
+    End Project Dependency
+    Begin Project Dependency
+    Project_Dep_Name Core osgGL2
+    End Project Dependency
+}}}
+
+###############################################################################
+
 Project: "Example osgwindows"=.\examples\osgwindows\osgwindows.dsp - Package Owner=<4>
 
 Package=<5>

VisualStudio/examples/osgsimplepager/osgsimplepager.dsp

@@ -0,0 +1,190 @@
+# Microsoft Developer Studio Project File - Name="Example osgsimplepager" - Package Owner=<4>
+
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+
+# ** DO NOT EDIT **
+
+
+
+# TARGTYPE "Win32 (x86) Console Application" 0x0103
+
+
+
+CFG=Example osgsimplepager - Win32 Release
+
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+
+!MESSAGE use the Export Makefile command and run
+
+!MESSAGE 
+
+!MESSAGE NMAKE /f "osgsimplepager.mak".
+
+!MESSAGE 
+
+!MESSAGE You can specify a configuration when running NMAKE
+
+!MESSAGE by defining the macro CFG on the command line. For example:
+
+!MESSAGE 
+
+!MESSAGE NMAKE /f "osgsimplepager.mak" CFG="Example osgsimplepager - Win32 Release"
+
+!MESSAGE 
+
+!MESSAGE Possible choices for configuration are:
+
+!MESSAGE 
+
+!MESSAGE "Example osgsimplepager - Win32 Release" (based on "Win32 (x86) Console Application")
+
+!MESSAGE "Example osgsimplepager - Win32 Debug" (based on "Win32 (x86) Console Application")
+
+!MESSAGE 
+
+
+
+# Begin Project
+
+# PROP AllowPerConfigDependencies 0
+
+# PROP Scc_ProjName ""
+
+# PROP Scc_LocalPath ""
+
+CPP=cl.exe
+
+RSC=rc.exe
+
+
+
+!IF  "$(CFG)" == "Example osgsimplepager - Win32 Release"
+
+
+
+# PROP BASE Use_MFC 0
+
+# PROP BASE Use_Debug_Libraries 0
+
+# PROP BASE Output_Dir "Release"
+
+# PROP BASE Intermediate_Dir "Release"
+
+# PROP BASE Target_Dir ""
+
+# PROP Use_MFC 0
+
+# PROP Use_Debug_Libraries 0
+
+# PROP Output_Dir "Release"
+
+# PROP Intermediate_Dir "Release"
+
+# PROP Ignore_Export_Lib 0
+
+# PROP Target_Dir ""
+
+# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
+
+# ADD CPP /nologo /MD /W3 /GR /GX /O2 /I "../../../include" /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
+
+# ADD BASE RSC /l 0x809 /d "NDEBUG"
+
+# ADD RSC /l 0x809 /d "NDEBUG"
+
+BSC32=bscmake.exe
+
+# ADD BASE BSC32 /nologo
+
+# ADD BSC32 /nologo
+
+LINK32=link.exe
+
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
+
+# ADD LINK32 opengl32.lib Producer.lib OpenThreadsWin32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"../../../bin/osgsimplepager.exe" /libpath:"../../../lib"
+
+
+
+!ELSEIF  "$(CFG)" == "Example osgsimplepager - Win32 Debug"
+
+
+
+# PROP BASE Use_MFC 0
+
+# PROP BASE Use_Debug_Libraries 1
+
+# PROP BASE Output_Dir "Debug"
+
+# PROP BASE Intermediate_Dir "Debug"
+
+# PROP BASE Target_Dir ""
+
+# PROP Use_MFC 0
+
+# PROP Use_Debug_Libraries 1
+
+# PROP Output_Dir "Debug"
+
+# PROP Intermediate_Dir "Debug"
+
+# PROP Ignore_Export_Lib 0
+
+# PROP Target_Dir ""
+
+# ADD BASE CPP /nologo /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
+
+# ADD CPP /nologo /MDd /W3 /Gm /vd0 /GR /GX /Zi /Od /I "../../../include" /D "_CONSOLE" /D "_MBCS" /D "FL_DLL" /D "WIN32" /D "_DEBUG" /FR /YX /FD /c
+
+# ADD BASE RSC /l 0x809 /d "_DEBUG"
+
+# ADD RSC /l 0x809 /d "_DEBUG"
+
+BSC32=bscmake.exe
+
+# ADD BASE BSC32 /nologo
+
+# ADD BSC32 /nologo
+
+LINK32=link.exe
+
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+
+# ADD LINK32 opengl32.lib Producerd.lib OpenThreadsWin32d.lib /nologo /subsystem:console /debug /machine:I386 /nodefaultlib:"libcmt" /out:"../../../bin/osgsimplepagerd.exe" /pdbtype:sept /libpath:"../../../lib"
+
+# SUBTRACT LINK32 /incremental:no
+
+
+
+!ENDIF 
+
+
+
+# Begin Target
+
+
+
+# Name "Example osgsimplepager - Win32 Release"
+
+# Name "Example osgsimplepager - Win32 Debug"
+
+# Begin Source File
+
+
+
+SOURCE=..\..\..\examples\osgsimplepager\osgsimplepager.cpp
+
+# End Source File
+
+# End Target
+
+# Begin Group "Resource Files"
+
+
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+
+# End Group
+
+# End Project
+

examples/osgsimplepager/GNUmakefile

@@ -0,0 +1,27 @@
+TOPDIR = ../..
+include $(TOPDIR)/Make/makedefs 
+
+CXXFILES =\
+	osgsimplepager.cpp\
+
+LIBS     += -lProducer -losgFX -losgGL2 -losgDB -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS) -lOpenThreads
+
+INSTFILES = \
+	$(CXXFILES)\
+	GNUmakefile.inst=GNUmakefile
+
+EXEC = osgsimplepager
+
+INC      += $(X_INC) 
+LDFLAGS  += -L/usr/X11R6/lib
+
+
+ifeq ($(USE_OPEN_THREAD),1)
+    DEF         += -D_USE_OPEN_THREAD
+    INC         += $(INC_OPEN_THREAD)
+    LDFLAGS     += $(LIB_OPEN_THREAD)
+    LIBS        +=  -lOpenThread
+endif
+
+include $(TOPDIR)/Make/makerules 
+

examples/osgsimplepager/GNUmakefile.inst

@@ -0,0 +1,14 @@
+TOPDIR = ../..
+include $(TOPDIR)/Make/makedefs
+
+CXXFILES =\
+	osgsimplepager.cpp\
+
+LIBS     += -lProducer -losgFX -losgGL2 -losgDB --losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS) 
+
+EXEC = osgsimplepager
+
+INC += $(PRODUCER_INCLUDE_DIR) $(X_INC)
+LDFLAGS  += $(PRODUCER_LIB_DIR)
+
+include $(TOPDIR)/Make/makerules

examples/osgsimplepager/osgsimplepager.cpp

@@ -0,0 +1,229 @@
+// C++ source file - (C) 2003 Robert Osfield, released under the OSGPL.
+//
+// Simple example of use of Producer::RenderSurface + KeyboardMouseCallback + SceneView
+// example that provides the user with control over view position with support for
+// enabling the osgDB::DatabasePager as required by the PagedLOD and TXP databases.
+
+#include <Producer/RenderSurface>
+#include <Producer/KeyboardMouse>
+#include <Producer/Trackball>
+
+#include <osg/Timer>
+
+#include <osgUtil/SceneView>
+#include <osgUtil/IntersectVisitor>
+
+#include <osgDB/ReadFile>
+
+#include <osgFX/Scribe>
+
+
+class MyKeyboardMouseCallback : public Producer::KeyboardMouseCallback
+{
+public:
+
+    MyKeyboardMouseCallback(osgUtil::SceneView* sceneView) :
+        Producer::KeyboardMouseCallback(),
+        _mx(0.0f),_my(0.0f),_mbutton(0),
+        _done(false),
+        _trackBall(new Producer::Trackball),
+        _sceneView(sceneView)
+    {
+        resetTrackball();
+    }
+
+    virtual void specialKeyPress( Producer::KeyCharacter key )
+    {
+        if (key==Producer::KeyChar_Escape)
+            shutdown();
+    }
+
+    virtual void shutdown()
+    {
+        _done = true; 
+    }
+
+    virtual void keyPress( Producer::KeyCharacter key)
+    {
+        if (key==' ') resetTrackball();
+    }
+
+    virtual void mouseMotion( float mx, float my ) 
+    {
+        _mx = mx;
+        _my = my;
+    }
+
+    virtual void buttonPress( float mx, float my, unsigned int mbutton ) 
+    {
+         _mx = mx;
+         _my = my;
+         _mbutton |= (1<<(mbutton-1));
+         
+         _mx_buttonPress = _mx;
+         _my_buttonPress = _my;
+    }
+    virtual void buttonRelease( float mx, float my, unsigned int mbutton ) 
+    {
+        _mx = mx;
+        _my = my;
+        _mbutton &= ~(1<<(mbutton-1));
+    }
+
+    bool done() { return _done; }
+    float mx()  { return _mx; }
+    float my()  { return _my; }
+    unsigned int mbutton()  { return _mbutton; }
+    
+    void resetTrackball()
+    {
+        osg::Node* scene = _sceneView->getSceneData();
+        if (scene)
+        {
+            const osg::BoundingSphere& bs = scene->getBound();
+            _trackBall->reset();
+            _trackBall->setOrientation( Producer::Trackball::Z_UP );
+            _trackBall->setDistance(bs.radius()*2.0f);
+            _trackBall->translate(-bs.center().x(),-bs.center().y(),-bs.center().z());
+        }
+    }
+    
+    osg::Matrixd getViewMatrix()
+    {
+	_trackBall->input( mx(), my(), mbutton() );
+        return osg::Matrixd(_trackBall->getMatrix().ptr());
+    }
+
+private:
+
+    float                               _mx, _my;
+    float                               _mx_buttonPress, _my_buttonPress;
+    unsigned int                        _mbutton;
+    
+    bool                                _done;
+    
+    osg::ref_ptr<Producer::Trackball>   _trackBall;
+    osg::ref_ptr<osgUtil::SceneView>    _sceneView;
+};
+
+int main( int argc, char **argv )
+{
+    if (argc<2) 
+    {
+        std::cout << argv[0] <<": requires filename argument." << std::endl;
+        return 1;
+    }
+
+    // load the scene.
+    osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFile(argv[1]);
+    if (!loadedModel) 
+    {
+        std::cout << argv[0] <<": No data loaded." << std::endl;
+        return 1;
+    }
+    
+    // create the window to draw to.
+    osg::ref_ptr<Producer::RenderSurface> renderSurface = new Producer::RenderSurface;
+    renderSurface->setWindowName("osgsimplepager");
+    renderSurface->setWindowRectangle(100,100,800,600);
+    renderSurface->useBorder(true);
+    renderSurface->realize();
+    
+
+    // create the view of the scene.
+    osg::ref_ptr<osgUtil::SceneView> sceneView = new osgUtil::SceneView;
+    sceneView->setDefaults();
+    sceneView->setSceneData(loadedModel.get());
+    
+    
+    // do the set up of the DatabasePager...
+    // create the database pager via the osgDB::Registry
+    osgDB::DatabasePager* databasePager = osgDB::Registry::instance()->getOrCreateDatabasePager();
+
+    // set wether the DatabasePager thread should be blocked while the scene graph is being used to render a frame
+    // setting frame block to true can help achieve constant frame rates on single CPU systems.
+    databasePager->setUseFrameBlock(false);
+
+    // register any PagedLOD that need to be tracked in the scene graph
+    databasePager->registerPagedLODs(sceneView->getSceneData());
+
+    // need to register the DatabasePager with the SceneView's CullVisitor so it can pass on request
+    // for files to be loaded.
+    sceneView->getCullVisitor()->setDatabaseRequestHandler(databasePager);        
+
+
+    // set up a KeyboardMouse to manage the events comming in from the RenderSurface
+    osg::ref_ptr<Producer::KeyboardMouse>  kbm = new Producer::KeyboardMouse(renderSurface.get());
+
+    // create a KeyboardMouseCallback to handle the mouse events within this applications
+    osg::ref_ptr<MyKeyboardMouseCallback> kbmcb = new MyKeyboardMouseCallback(sceneView.get());
+
+
+    // record the timer tick at the start of rendering.    
+    osg::Timer_t start_tick = osg::Timer::instance()->tick();
+    
+    unsigned int frameNum = 0;
+
+    // main loop (note, window toolkits which take control over the main loop will require a window redraw callback containing the code below.)
+    while( renderSurface->isRealized() && !kbmcb->done())
+    {
+        // set up the frame stamp for current frame to record the current time and frame number so that animtion code can advance correctly
+        osg::FrameStamp* frameStamp = new osg::FrameStamp;
+        frameStamp->setReferenceTime(osg::Timer::instance()->delta_s(start_tick,osg::Timer::instance()->tick()));
+        frameStamp->setFrameNumber(frameNum++);
+        
+        // pass frame stamp to the SceneView so that the update, cull and draw traversals all use the same FrameStamp
+        sceneView->setFrameStamp(frameStamp);
+
+        // pass any keyboard mouse events onto the local keyboard mouse callback.        
+        kbm->update( *kbmcb );
+        
+        // set the view
+        sceneView->setViewMatrix(kbmcb->getViewMatrix());
+
+        // update the viewport dimensions, incase the window has been resized.
+        sceneView->setViewport(0,0,renderSurface->getWindowWidth(),renderSurface->getWindowHeight());
+
+
+        // tell the DatabasePager the frame number of that the scene graph is being actively used to render a frame
+        databasePager->signalBeginFrame(frameStamp);
+
+        // syncronize changes required by the DatabasePager thread to the scene graph
+        databasePager->updateSceneGraph(frameStamp->getReferenceTime());
+
+        // do the update traversal the scene graph - such as updating animations
+        sceneView->update();
+        
+        // do the cull traversal, collect all objects in the view frustum into a sorted set of rendering bins
+        sceneView->cull();
+        
+        // draw the rendering bins.
+        sceneView->draw();
+        
+
+        // tell the DatabasePager that the frame is complete and that scene graph is no longer be activity traversed.
+        databasePager->signalEndFrame();
+
+        // Swap Buffers
+        renderSurface->swapBuffers();
+        
+ 
+        // clean up  and compile gl objects with a specified limit       
+        double availableTime = 0.0025; // 2.5 ms
+        
+        // compile any GL objects that are required.
+        databasePager->compileGLObjects(*(sceneView->getState()),availableTime);
+
+        // flush deleted GL objects.
+        sceneView->flushDeletedGLObjects(availableTime);
+        
+
+        
+    }
+
+    // switch off the database pager by unreferning it.
+    osgDB::Registry::instance()->setDatabasePager(0);
+
+    return 0;
+}
+