C:/Users/Robert/Documents/Visual Studio 2008/Projects/ferprojekt/TerrainEditor/TerrainEditor/SceneManager.h

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#ifndef __SceneManager__
#define __SceneManager__

#include <osg/Group>
#include <osg/Geode>
#include <osgViewer/View>

#include "Observer.h"
#include "SceneObject.h"
#include "Terrain.h"
#include "ObjectManipulatorProxy.h"

#include <list>

using namespace std;


class SceneManager : public Observable {
public:
        ~SceneManager();

        static SceneManager& instance();

        osg::Node* getRootNode();

        void addSceneObject(SceneObject* sceneObject);
        void removeObject(SceneObject* sceneObject);
    void removeSelectedObject();

    void clear();

    SceneObject* computeHitObject(int x, int y, osg::Camera* camera);
        osg::Node* computeHitKnob(int x, int y, osg::Camera* camera);

    osg::Vec3 getPlaneIntersection(osg::Vec3d& planePoint, osg::Vec3d& planeNormal, int x, int y, osg::Camera* camera);
    void setSelectedObject(SceneObject* sceneObject);
        SceneObject* getSelectedObject();

        
        void enableCoordSystem(bool state);

        ObjectManipulatorProxy *getObjectManipulatorProxy() const;

    void setSkydomePosition(osg::Vec3d* position); 

protected:
    class SkydomeCallback : public osg::NodeCallback {
    public:
        void setPosition(osg::Vec3d* position) {
            _position = position;
        }

        virtual void operator()(osg::Node* node, osg::NodeVisitor* nv) {
            if (_position != NULL)
                ((osg::PositionAttitudeTransform*)node)->setPosition(*_position);
            
            traverse(node, nv);
        }

    protected:
        osg::Vec3d* _position;
    };


        SceneManager();

        osg::ref_ptr<osg::Group>        _root;
        osg::ref_ptr<osg::Group>        _coordSystem;
    osg::ref_ptr<osg::PositionAttitudeTransform> _skydomePAT;

        ObjectManipulatorProxy*     _selectedObjectCoordSys;
        SceneObject*                            _selectedObject;

        bool _isCoordSystemEnabled;

    Terrain& _terrain;

    SkydomeCallback _skydomeCallback;

    list<SceneObject*> _sceneObjects;
};

#endif

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