/*  -*-c++-*- 
 *  Copyright (C) 2008 Cedric Pinson <mornifle@plopbyte.net>
 *
 * This library is open source and may be redistributed and/or modified under  
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 * 
 * This library 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.  See the 
 * OpenSceneGraph Public License for more details.
*/

#ifndef OSGANIMATION_UPDATE_CALLBACK_H
#define OSGANIMATION_UPDATE_CALLBACK_H

#include <osg/Vec3>
#include <osg/NodeCallback>
#include <osg/observer_ptr>
#include <osgAnimation/AnimationManagerBase>
#include <osgAnimation/Export>

namespace osgAnimation 
{

    class OSGANIMATION_EXPORT AnimationUpdateCallback : public osg::NodeCallback
    {
    protected:
        osg::observer_ptr<osgAnimation::AnimationManagerBase> _manager;

    public:
        AnimationUpdateCallback(const std::string& name = "") { setName(name); }
        AnimationUpdateCallback(const AnimationUpdateCallback& apc,const osg::CopyOp& copyop);
        osgAnimation::AnimationManagerBase* getAnimationManager();
        virtual bool needLink() const = 0;
        virtual bool link(osgAnimation::Channel* channel) = 0;
        virtual int link(osgAnimation::Animation* animation);
        virtual void updateLink();
    };
  

    class OSGANIMATION_EXPORT UpdateTransform : public AnimationUpdateCallback
    {
    protected:
        osg::ref_ptr<osgAnimation::Vec3Target> _euler;
        osg::ref_ptr<osgAnimation::Vec3Target> _position;
        osg::ref_ptr<osgAnimation::Vec3Target> _scale;
    
    public:

        META_Object(osgAnimation, UpdateTransform);

        UpdateTransform(const std::string& name = "");
        UpdateTransform(const UpdateTransform& apc,const osg::CopyOp& copyop);

        /** Callback method called by the NodeVisitor when visiting a node.*/
        virtual void operator()(osg::Node* node, osg::NodeVisitor* nv);
        void update(osg::MatrixTransform& mat);
        void update(osg::PositionAttitudeTransform& pat);
        bool needLink() const;
        bool link(osgAnimation::Channel* channel);
    };


}

#endif