StackedRotateAxisElement

/*  -*-c++-*- 
 *  Copyright (C) 2009 Cedric Pinson <cedric.pinson@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_STACKED_ROTATE_AXIS_ELEMENT
#define OSGANIMATION_STACKED_ROTATE_AXIS_ELEMENT 1

#include <osgAnimation/Export>
#include <osgAnimation/StackedTransformElement>
#include <osgAnimation/Target>
#include <osg/Vec3>

namespace osgAnimation
{

    class OSGANIMATION_EXPORT StackedRotateAxisElement : public StackedTransformElement 
    {
    public:
        META_Object(osgAnimation, StackedRotateAxisElement);

        StackedRotateAxisElement();
        StackedRotateAxisElement(const StackedRotateAxisElement&, const osg::CopyOp&);
        StackedRotateAxisElement(const std::string& name, const osg::Vec3& axis, double angle);
        StackedRotateAxisElement(const osg::Vec3& axis, double angle);

        void applyToMatrix(osg::Matrix& matrix) const;
        osg::Matrix getAsMatrix() const;
        bool isIdentity() const { return (_angle == 0); }
        void update();

        const osg::Vec3& getAxis() const;
        double getAngle() const;
        void setAxis(const osg::Vec3&);
        void setAngle(double);

        virtual Target* getOrCreateTarget();
        virtual Target* getTarget() {return _target.get();}
        virtual const Target* getTarget() const {return _target.get();}

    protected:
        osg::Vec3 _axis;
        double _angle;
        osg::ref_ptr<FloatTarget> _target;
    };

}

#endif