//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
//Distributed under the terms of the GNU Library General Public License (LGPL)
//as published by the Free Software Foundation.

#ifndef OSG_POSITIONATTITIDETRANSFORM
#define OSG_POSITIONATTITIDETRANSFORM 1

#include <osg/Group>
#include <osg/Transform>
#include <osg/AnimationPath>
#include <osg/Quat>

namespace osg {

/** PositionAttitideTransform - is Transform the set the coordinates transform
    up via a Vec3 position and Quat attitude.
*/
class SG_EXPORT PositionAttitudeTransform : public Transform
{
    public :
        PositionAttitudeTransform();

        PositionAttitudeTransform(const PositionAttitudeTransform& pat,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
            Transform(pat,copyop),
            _position(pat._position),
            _attitude(pat._attitude),
            _pivotPoint(pat._pivotPoint) {}
            

        META_Node(osg, PositionAttitudeTransform);


        void setPosition(const Vec3& pos) { _position = pos; dirtyBound(); }
        
        const Vec3& getPosition() const { return _position; }


        void setAttitude(const Quat& quat) { _attitude = quat; dirtyBound(); }
        
        const Quat& getAttitude() const { return _attitude; }
        
        
        void setPivotPoint(const Vec3& pivot) { _pivotPoint = pivot; dirtyBound(); }
    
        const Vec3& setPivotPoint() const { return _pivotPoint; }
        

        virtual const bool computeLocalToWorldMatrix(Matrix& matrix,NodeVisitor* nv) const;

        virtual const bool computeWorldToLocalMatrix(Matrix& matrix,NodeVisitor* nv) const;


        /** Callback which can be attached to a PositionAttitudeTransform
          * as an app callback to allow it to follow the path defined by a
          * AnimationPath.*/
        class AnimationPathCallback : public NodeCallback
        {
            public:
            
                AnimationPathCallback(AnimationPath* ap):
                    _animationPath(ap),
                    _firstTime(0.0) {}
            
                /** implements the callback*/
                virtual void operator()(Node* node, NodeVisitor* nv);
                
                ref_ptr<AnimationPath>  _animationPath;
                double                  _firstTime;
        };


    protected :
            

        Vec3 _position;
        Quat _attitude;
        Vec3 _pivotPoint;
};

}

#endif