CameraView.h

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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
 *
 * 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 OSG_CAMERAVIEW
#define OSG_CAMERAVIEW 1

#include <osg/Group>
#include <osg/Transform>
#include <osg/AnimationPath>
#include <osg/Vec3d>
#include <osg/Quat>

namespace osg {

class OSG_EXPORT CameraView : public Transform
{
    public :
        CameraView();

        CameraView(const CameraView& pat,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
            Transform(pat,copyop),
            _position(pat._position),
            _attitude(pat._attitude),
            _fieldOfView(pat._fieldOfView),
            _fieldOfViewMode(pat._fieldOfViewMode),
            _focalLength(pat._focalLength) {}


        META_Node(osg, CameraView);

        inline void setPosition(const Vec3d& pos) { _position = pos; dirtyBound(); }

        inline const Vec3d& getPosition() const { return _position; }

        inline void setAttitude(const Quat& quat) { _attitude = quat; dirtyBound(); }

        inline const Quat& getAttitude() const { return _attitude; }

        inline void setFieldOfView(double fieldOfView) { _fieldOfView = fieldOfView; }

        inline double getFieldOfView() const { return _fieldOfView; }

        enum FieldOfViewMode
        {
            UNCONSTRAINED,
            HORIZONTAL,
            VERTICAL
        };

        inline void setFieldOfViewMode(FieldOfViewMode mode) { _fieldOfViewMode = mode; }

        inline FieldOfViewMode getFieldOfViewMode() const { return _fieldOfViewMode; }

        inline void setFocalLength(double focalLength) { _focalLength = focalLength; }

        inline double getFocalLength() const { return _focalLength; }


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


    protected :

        virtual ~CameraView() {}

        Vec3d           _position;
        Quat            _attitude;
        double          _fieldOfView;
        FieldOfViewMode _fieldOfViewMode;
        double          _focalLength;
};

}

#endif