Added osgdatabaserevisions example to server as a testbed for new osgDB::DatabaseRevisions functionality

examples/CMakeLists.txt

@@ -31,6 +31,7 @@ IF(DYNAMIC_OPENSCENEGRAPH)
     ADD_SUBDIRECTORY(osgcubemap)
     ADD_SUBDIRECTORY(osgdelaunay)
     ADD_SUBDIRECTORY(osgcluster)
+    ADD_SUBDIRECTORY(osgdatabaserevisions)
     ADD_SUBDIRECTORY(osgdepthpartition)
     ADD_SUBDIRECTORY(osgdepthpeeling)
     ADD_SUBDIRECTORY(osgdrawinstanced)

examples/osgdatabaserevisions/CMakeLists.txt

@@ -0,0 +1,4 @@
+SET(TARGET_SRC osgdatabaserevisions.cpp )
+
+#### end var setup  ###
+SETUP_EXAMPLE(osgdatabaserevisions)

examples/osgdatabaserevisions/osgdatabaserevisions.cpp

@@ -0,0 +1,170 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
+ *
+ * This application is open source and may be redistributed and/or modified   
+ * freely and without restriction, both in commericial and non commericial applications,
+ * as long as this copyright notice is maintained.
+ * 
+ * This application is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+*/
+
+#include <osgDB/ReadFile>
+#include <osgUtil/Optimizer>
+#include <osg/CoordinateSystemNode>
+
+#include <osg/Switch>
+#include <osgText/Text>
+
+#include <osgViewer/Viewer>
+#include <osgViewer/ViewerEventHandlers>
+
+#include <osgGA/TrackballManipulator>
+#include <osgGA/FlightManipulator>
+#include <osgGA/DriveManipulator>
+#include <osgGA/KeySwitchMatrixManipulator>
+#include <osgGA/StateSetManipulator>
+#include <osgGA/AnimationPathManipulator>
+#include <osgGA/TerrainManipulator>
+#include <osgGA/SphericalManipulator>
+
+#include <iostream>
+
+int main(int argc, char** argv)
+{
+    // use an ArgumentParser object to manage the program arguments.
+    osg::ArgumentParser arguments(&argc,argv);
+
+    arguments.getApplicationUsage()->setApplicationName(arguments.getApplicationName());
+    arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the standard OpenSceneGraph example which loads and visualises 3d models.");
+    arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
+    arguments.getApplicationUsage()->addCommandLineOption("--image <filename>","Load an image and render it on a quad");
+    arguments.getApplicationUsage()->addCommandLineOption("--dem <filename>","Load an image/DEM and render it on a HeightField");
+    arguments.getApplicationUsage()->addCommandLineOption("--login <url> <username> <password>","Provide authentication information for http file access.");
+
+    osgViewer::Viewer viewer(arguments);
+
+    unsigned int helpType = 0;
+    if ((helpType = arguments.readHelpType()))
+    {
+        arguments.getApplicationUsage()->write(std::cout, helpType);
+        return 1;
+    }
+    
+    // report any errors if they have occurred when parsing the program arguments.
+    if (arguments.errors())
+    {
+        arguments.writeErrorMessages(std::cout);
+        return 1;
+    }
+
+#if 0
+    if (arguments.argc()<=1)
+    {
+        arguments.getApplicationUsage()->write(std::cout,osg::ApplicationUsage::COMMAND_LINE_OPTION);
+        return 1;
+    }
+#endif
+
+    std::string url, username, password;
+    while(arguments.read("--login",url, username, password))
+    {
+        if (!osgDB::Registry::instance()->getAuthenticationMap())
+        {
+            osgDB::Registry::instance()->setAuthenticationMap(new osgDB::AuthenticationMap);
+            osgDB::Registry::instance()->getAuthenticationMap()->addAuthenticationDetails(
+                url,
+                new osgDB::AuthenticationDetails(username, password)
+            );
+        }
+    }
+
+    // set up the camera manipulators.
+    {
+        osg::ref_ptr<osgGA::KeySwitchMatrixManipulator> keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;
+
+        keyswitchManipulator->addMatrixManipulator( '1', "Trackball", new osgGA::TrackballManipulator() );
+        keyswitchManipulator->addMatrixManipulator( '2', "Flight", new osgGA::FlightManipulator() );
+        keyswitchManipulator->addMatrixManipulator( '3', "Drive", new osgGA::DriveManipulator() );
+        keyswitchManipulator->addMatrixManipulator( '4', "Terrain", new osgGA::TerrainManipulator() );
+        keyswitchManipulator->addMatrixManipulator( '5', "Spherical", new osgGA::SphericalManipulator() );
+
+        std::string pathfile;
+        char keyForAnimationPath = '6';
+        while (arguments.read("-p",pathfile))
+        {
+            osgGA::AnimationPathManipulator* apm = new osgGA::AnimationPathManipulator(pathfile);
+            if (apm || !apm->valid()) 
+            {
+                unsigned int num = keyswitchManipulator->getNumMatrixManipulators();
+                keyswitchManipulator->addMatrixManipulator( keyForAnimationPath, "Path", apm );
+                keyswitchManipulator->selectMatrixManipulator(num);
+                ++keyForAnimationPath;
+            }
+        }
+
+        viewer.setCameraManipulator( keyswitchManipulator.get() );
+    }
+
+    // add the state manipulator
+    viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
+    
+    // add the thread model handler
+    viewer.addEventHandler(new osgViewer::ThreadingHandler);
+
+    // add the window size toggle handler
+    viewer.addEventHandler(new osgViewer::WindowSizeHandler);
+        
+    // add the stats handler
+    viewer.addEventHandler(new osgViewer::StatsHandler);
+
+    // add the help handler
+    viewer.addEventHandler(new osgViewer::HelpHandler(arguments.getApplicationUsage()));
+
+    // add the record camera path handler
+    viewer.addEventHandler(new osgViewer::RecordCameraPathHandler);
+
+    // add the LOD Scale handler
+    viewer.addEventHandler(new osgViewer::LODScaleHandler);
+
+    // add the screen capture handler
+    viewer.addEventHandler(new osgViewer::ScreenCaptureHandler);
+
+    std::string file = "http://www.openscenegraph.org/data/earth_bayarea/earth.ive";
+
+    osgDB::FileCache* fileCache = osgDB::Registry::instance()->getFileCache();
+    if (fileCache)
+    {
+        osg::notify(osg::NOTICE)<<"We have FileCache "<<fileCache<<std::endl;
+        fileCache->loadDatabaseRevisionsForFile(file);
+    }
+
+    // load the data
+    osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFile(file);
+    if (!loadedModel) 
+    {
+        std::cout << arguments.getApplicationName() <<": No data loaded" << std::endl;
+        return 1;
+    }
+
+    // any option left unread are converted into errors to write out later.
+    arguments.reportRemainingOptionsAsUnrecognized();
+
+    // report any errors if they have occurred when parsing the program arguments.
+    if (arguments.errors())
+    {
+        arguments.writeErrorMessages(std::cout);
+        return 1;
+    }
+
+    // optimize the scene graph, remove redundant nodes and state etc.
+    osgUtil::Optimizer optimizer;
+    optimizer.optimize(loadedModel.get());
+
+    viewer.setSceneData( loadedModel.get() );
+
+    viewer.realize();
+
+    return viewer.run();
+
+}