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154 lines
4 KiB
C++
154 lines
4 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_QUAD_GRID_CLIP_CLUSTER_H
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#define NL_QUAD_GRID_CLIP_CLUSTER_H
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#include "nel/misc/types_nl.h"
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#include "nel/3d/clip_trav.h"
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#include "nel/misc/aabbox.h"
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#include "nel/3d/fast_ptr_list.h"
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namespace NL3D
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{
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class CQuadGridClipCluster;
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// ***************************************************************************
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class CQuadGridClipClusterListDist
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{
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public:
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// An entry for each distance setup.
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std::vector<CFastPtrList<CTransformShape> > Models;
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public:
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// If 0 clipSons of all dist Setup, esle start from minDistSetup
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void clipSons(uint minDistSetup);
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// insert a model in this listDist at the good place
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void insertModel(uint distSetup, CTransformShape *model);
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// erase all models and relink to rootCluster
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void resetSons(CClipTrav *clipTrav);
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};
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// ***************************************************************************
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class CQuadGridClipClusterQTreeNode
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{
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public:
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CQuadGridClipCluster *Owner;
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// 4 Sons
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CQuadGridClipClusterQTreeNode *Sons[4];
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// List of objects inserted in this node
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CQuadGridClipClusterListDist ListNode;
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// The BBox of this node.
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NLMISC::CAABBox BBox;
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NLMISC::CAABBoxExt BBoxExt;
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bool Empty;
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// Am i the root?
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bool RootNode;
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// Am i a leaf?
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bool LeafNode;
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// The reference 2D BBox pivot to know how to insert models
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NLMISC::CAABBox PivotBBox;
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public:
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CQuadGridClipClusterQTreeNode();
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~CQuadGridClipClusterQTreeNode();
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// init me and sons
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void init(CQuadGridClipCluster *owner, uint level, bool rootNode, const NLMISC::CAABBox &pivot);
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// clip the cluster or his sons
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void clip(CClipTrav *clipTrav);
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// No cluster clip
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void noFrustumClip(CClipTrav *clipTrav);
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// insert a model in this listDist at the good place
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void insertModel(const NLMISC::CAABBox &worldBBox, uint distSetup, CTransformShape *model);
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// erase all models and relink to rootCluster
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void resetSons(CClipTrav *clipTrav);
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// count numchildren and add sons
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void profileNumChildren(uint distLevel, uint &result) const;
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};
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// ***************************************************************************
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/**
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* A cluster of object for fast BBox clip.
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* \author Lionel Berenguier
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* \author Nevrax France
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* \date 2001
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*/
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class CQuadGridClipCluster
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{
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public:
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// For insertion in the QuadGridClipManager
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CFastPtrListNode ListNode;
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public:
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/// Constructor
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CQuadGridClipCluster(uint numDist, float distMax, const NLMISC::CAABBox &pivot);
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~CQuadGridClipCluster();
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void addModel(const NLMISC::CAABBox &worldBBox, CTransformShape *model);
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// NB: the BBox is not recomputed.
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void removeModel(CTransformShape *model);
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void clip(CClipTrav *clipTrav);
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// NB it is possible that profileNumChildren()==0 and isEmpty()==false!!
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bool isEmpty() const {return _Root.Empty;}
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const NLMISC::CAABBox &getBBox() const {return _Root.BBox;}
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sint profileNumChildren(uint distLevel) const;
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void resetSons(CClipTrav *clipTrav);
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protected:
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friend class CQuadGridClipClusterQTreeNode;
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// The max distance tested
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float _DistMax;
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// The number of distance not infinite.
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uint _NumDist;
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// _NumDist+1 (the infinite distance)
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uint _NumDistTotal;
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// The Root of QuadTree.
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CQuadGridClipClusterQTreeNode _Root;
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};
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} // NL3D
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#endif // NL_QUAD_GRID_CLIP_CLUSTER_H
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/* End of quad_grid_clip_cluster.h */
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