#ifndef OSG_DCS
#define OSG_DCS 1

#include <osg/Group>
#include <osg/Matrix>

namespace osg {

/** DCS - Dynamic Coordinate System a is group which all children
    are transformed by the the DCS's osg::Matrix.  Typical uses
    of the DCS is for positioning objects within a scene or 
    producing trakerball functionality.
*/
class SG_EXPORT DCS : public Group
{
    public :
        DCS();
        DCS(const Matrix& matix);

        virtual Object* clone() const { return new DCS(); }
        virtual bool isSameKindAs(Object* obj) { return dynamic_cast<DCS*>(obj)!=NULL; }
        virtual const char* className() const { return "DCS"; }
        virtual void accept(NodeVisitor& nv) { nv.apply(*this); }

        void setMatrix(const Matrix& mat );
        Matrix* getMatrix() { return _mat; }

        void preTranslate( float tx, float ty, float tz );
        void preRotate( float deg, float x, float y, float z );

        bool computeBound();
    
    protected :
    
        virtual ~DCS();
        
        virtual bool readLocalData(Input& fr);
        virtual bool writeLocalData(Output& fw);

        Matrix *_mat;
};

};

#endif