CWE-ou-minkata/Sources/Plasma/PubUtilLib/plScene/plPageTreeMgr.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

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*==LICENSE==*/

#ifndef plPageTreeMgr_inc
#define plPageTreeMgr_inc

#include "hsTemplates.h"
#include <vector>

class plSceneNode;
class plSpaceTree;
class plPipeline;
class plCullPoly;
class plOccluder;
class plDrawable;
class plDrawVisList;
class plVolumeIsect;
class plVisMgr;

class plDrawSpanPair
{
public:
    plDrawSpanPair() {}
    plDrawSpanPair(uint16_t d, uint16_t s) : fDrawable(d), fSpan(s) {}
    uint16_t      fDrawable;
    uint16_t      fSpan;
};

class plDrawVisList
{
public:
    plDrawVisList() : fDrawable(nil) {}
    virtual ~plDrawVisList() {}

    plDrawable*         fDrawable;
    hsTArray<int16_t>     fVisList;

    plDrawVisList& operator=(const plDrawVisList& v) { fDrawable = v.fDrawable; fVisList = v.fVisList; return *this; }
};

class plPageTreeMgr
{
protected:
    std::vector<plSceneNode*>      fNodes;

    plSpaceTree*                fSpaceTree;
    plVisMgr*                   fVisMgr;

    static bool                 fDisableVisMgr;

    hsTArray<const plOccluder*> fOccluders;
    hsTArray<const plCullPoly*> fCullPolys;
    hsTArray<const plCullPoly*> fSortedCullPolys;

    void                        ITrashSpaceTree();
    bool                        IBuildSpaceTree();
    bool                        IRefreshTree(plPipeline* pipe);
    void                        ISortCullPolys(plPipeline* pipe);
    bool                        IGetOcclusion(plPipeline* pipe, hsTArray<int16_t>& list);
    bool                        IGetCullPolys(plPipeline* pipe);
    void                        IResetOcclusion(plPipeline* pipe);
    void                        IAddCullPolyList(const hsTArray<plCullPoly>& polyList);

    bool                        ISortByLevel(plPipeline* pipe, hsTArray<plDrawVisList>& drawList, hsTArray<plDrawVisList>& sortedDrawList);
    int                         IPrepForRenderSortingSpans(plPipeline* pipe, hsTArray<plDrawVisList>& drawVis, int& iDrawStart);
    bool                        IRenderSortingSpans(plPipeline* pipe, hsTArray<plDrawVisList*>& drawList, hsTArray<plDrawSpanPair>& pairs);
    int                         IRenderVisList(plPipeline* pipe, hsTArray<plDrawVisList>& visList);

public:
    plPageTreeMgr();
    virtual ~plPageTreeMgr();

    const std::vector<plSceneNode*>& GetNodes() const { return fNodes; }

    void            AddNode(plSceneNode* node);
    void            RemoveNode(plSceneNode* node);
    virtual void    Reset(); // remove all nodes, nuke the space tree
    virtual bool    Empty() const { return fNodes.empty(); }

    virtual int     Render(plPipeline* pipe);

    bool            Harvest(plVolumeIsect* isect, hsTArray<plDrawVisList>& levList);

    void            AddOccluderList(const hsTArray<plOccluder*> occList);

    plSpaceTree*    GetSpaceTree() { if( !fSpaceTree ) IBuildSpaceTree(); return fSpaceTree; }

    void            SetVisMgr(plVisMgr* visMgr) { fVisMgr = visMgr; }
    plVisMgr*       GetVisMgr() const { return fVisMgr; }

    static void     EnableVisMgr(bool on) { fDisableVisMgr = !on; }
    static bool     VisMgrEnabled() { return !fDisableVisMgr; }
};

#endif // plPageTreeMgr_inc