camera.h

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/***************************************************************************
 *   Copyright (C) 2004-2005 by Reality Rift Studios                       *
 *   http://www.realityrift.com  -  mattias@realityrift.com                *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
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 *   Free Software Foundation, Inc.,                                       *
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 ***************************************************************************/

#ifndef neo_scene_camera_h
#define neo_scene_camera_h

#include "../core/platform.h"

#if NEO_ENABLE_SCENE

#include "../collision/frustum.h"
#include "../math/matrix.h"
#include "object.h"

namespace neo {
namespace scene {


class Camera : public Object
{
    public:

    enum Projection
    {
        PERSPECTIVE                                         = 0,
        
        ORTHOGRAPHIC                                        = 1
    };
    

                                                            Camera( const std::string& name );
    
    virtual                                                ~Camera();


    virtual void                                            setPerspective( float near, float far, float fov );
    

    virtual void                                            setOrthographic( float near, float far, float height );


    virtual void                                            setProjectionMode( Projection mode );
    

    inline Projection                                       getProjectionMode() const;


    inline float                                            getZNear() const;
    

    inline float                                            getZFar() const;
    

    inline float                                            getFOV() const;
    

    inline float                                            getHeight() const;
    

    virtual void                                            render();


    virtual void                                            lookAt( const math::Vector3& at, const math::Vector3& up = math::Vector3::AXIS[ math::Y ] );


    inline const collision::Frustum&                        getFrustum();


    inline const math::Matrix4&                             getProjectionMatrix() const;


    inline const math::Matrix4&                             getViewMatrix();


    virtual void                                            set( const core::HashString& name, const core::Any& data );
    

    virtual const core::Any&                                get( const core::HashString& name );
    

    inline static Camera*                                   getActiveCamera();


    virtual Camera*                                         clone() const;
    
    protected:
    
    static Camera*                                          _p_active;

    Projection                                              _mode;
    
    float                                                   _near;

    float                                                   _far;

    float                                                   _fov;
    
    float                                                   _height;

    math::Matrix4                                           _projection;
    
    collision::Frustum                                      _frustum;

    void                                                    copyFrom( const Camera& obj );

    virtual void                                            calcTransforms();
};

#include "camera.inl"

}
}

#endif

#endif

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