OgrePCZCamera.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2013 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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-----------------------------------------------------------------------------
PCZCamera.h  -  description
-----------------------------------------------------------------------------
begin                : Wed Feb 21 2007
author               : Eric Cha
email                : ericc@xenopi.com
Code Style Update    :
-----------------------------------------------------------------------------
*/

#ifndef PCZCAMERA_H
#define PCZCAMERA_H

#include <OgreCamera.h>
#include "OgrePCPlane.h"
#include "OgrePortalBase.h"
#include "OgrePCZFrustum.h"
#include "OgrePCZPrerequisites.h"

namespace Ogre
{
    #define MAX_EXTRA_CULLING_PLANES    40

    class PCZone;


    class _OgrePCZPluginExport PCZCamera : public Camera
    {
    public:
        enum Visibility
        {
            NONE,
            PARTIAL,
            FULL
        };

        /* Standard constructor */
        PCZCamera( const String& name, SceneManager* sm );
        /* Standard destructor */
        ~PCZCamera();

        virtual const AxisAlignedBox& getBoundingBox(void) const;

        /* Overridden isVisible function for aabb */
        virtual bool isVisible( const AxisAlignedBox &bound, FrustumPlane *culledBy=0) const;

        /* isVisible() function for portals */
        bool isVisible(PortalBase* portal, FrustumPlane* culledBy = 0) const;

        bool isVisibile( const AxisAlignedBox &bound );

        PCZCamera::Visibility getVisibility( const AxisAlignedBox &bound );

        void setProjectionType(ProjectionType pt);

        /* Update function (currently used for making sure the origin stuff for the
           extra culling frustum is up to date */
        void update(void);

        // calculate extra culling planes from portal and camera 
        // origin and add to list of extra culling planes
        int addPortalCullingPlanes(PortalBase* portal);
        // remove extra culling planes created from the given portal
        void removePortalCullingPlanes(PortalBase* portal);
        // remove all extra culling planes
        void removeAllExtraCullingPlanes(void);
    protected:
        AxisAlignedBox mBox;
        PCZFrustum mExtraCullingFrustum;
    };

}

#endif