// Wild Magic Source Code
// David Eberly
// http://www.geometrictools.com
// Copyright (c) 1998-2008
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or (at
// your option) any later version.  The license is available for reading at
// either of the locations:
//     http://www.gnu.org/copyleft/lgpl.html
//     http://www.geometrictools.com/License/WildMagicLicense.pdf
//
// Version: 4.0.0 (2006/06/28)

#ifndef WM4CONVEXREGIONMANAGER_H
#define WM4CONVEXREGIONMANAGER_H

#include "Wm4GraphicsLIB.h"
#include "Wm4BspNode.h"
#include "Wm4CRMCuller.h"

namespace Wm4
{

class Camera;
class ConvexRegion;

class WM4_GRAPHICS_ITEM ConvexRegionManager : public BspNode
{
    WM4_DECLARE_RTTI;
    WM4_DECLARE_NAME_ID;
    WM4_DECLARE_STREAM;

public:
    // Construction and destruction.  The BSP tree should be built so that
    // the leaf nodes are where the ConvexRegion objects are located.
    ConvexRegionManager ();
    virtual ~ConvexRegionManager ();

    // The middle child of ConvexRegionManager is where the representation
    // of the outside of the set of regions is stored.  This can be an
    // arbitrary subgraph, not just drawable geometry.
    SpatialPtr AttachOutside (Spatial* pkOutside);
    SpatialPtr DetachOutside ();
    SpatialPtr GetOutside ();

    // Determine region that contains the point.  If the point is outside
    // the set of regions, the return values is null.
    ConvexRegion* GetContainingRegion (const Vector3f& rkPoint);

protected:
    // culling
    virtual void GetVisibleSet (Culler& rkCuller, bool bNoCull);

    CRMCuller m_kCuller;
};

WM4_REGISTER_STREAM(ConvexRegionManager);
typedef Pointer<ConvexRegionManager> ConvexRegionManagerPtr;

}

#endif
