Added creation of basic geoemtry to test Locator and extents

examples/osgterrain/osgterrain.cpp

@@ -1,5 +1,3 @@
-#include <osgViewer/Viewer>
-
 #include <osg/Group>
 #include <osg/Geode>
 #include <osg/ShapeDrawable>
@@ -15,6 +13,18 @@
 
 #include <osgText/FadeText>
 
+#include <osgViewer/Viewer>
+#include <osgViewer/StatsHandler>
+
+#include <osgGA/TrackballManipulator>
+#include <osgGA/FlightManipulator>
+#include <osgGA/DriveManipulator>
+#include <osgGA/KeySwitchMatrixManipulator>
+#include <osgGA/StateSetManipulator>
+#include <osgGA/AnimationPathManipulator>
+#include <osgGA/TerrainManipulator>
+
+
 #include <osgTerrain/TerrainNode>
 #include <osgTerrain/GeometryTechnique>
 #include <osgTerrain/Layer>
@@ -31,6 +41,39 @@ int main(int argc, char** argv)
     // construct the viewer.
     osgViewer::Viewer viewer;
 
+    // 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() );
+
+        std::string pathfile;
+        char keyForAnimationPath = '5';
+        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 stats handler
+    viewer.addEventHandler(new osgViewer::StatsHandler);
+
     double x = 0.0;
     double y = 0.0;
     double w = 1.0;