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/*==LICENSE==*
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CyanWorlds.com Engine - MMOG client, server and tools
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Copyright (C) 2011 Cyan Worlds, Inc.
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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 General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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Additional permissions under GNU GPL version 3 section 7
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If you modify this Program, or any covered work, by linking or
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
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NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
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(or a modified version of those libraries),
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
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PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
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JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
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licensors of this Program grant you additional
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permission to convey the resulting work. Corresponding Source for a
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non-source form of such a combination shall include the source code for
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the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
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work.
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You can contact Cyan Worlds, Inc. by email legal@cyan.com
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or by snail mail at:
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Cyan Worlds, Inc.
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14617 N Newport Hwy
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Mead, WA 99021
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*==LICENSE==*/
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#ifndef plSpaceTreeMaker_inc
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#define plSpaceTreeMaker_inc
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#include "hsBounds.h"
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#include "hsTemplates.h"
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#include "hsBitVector.h"
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class hsRadixSortElem;
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class plSpaceTree;
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class plSpacePrepNode
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{
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public:
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hsBounds3Ext fWorldBounds;
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Int16 fIndex;
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Int16 fDataIndex;
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plSpacePrepNode* fChildren[2];
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};
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class plSpaceTreeMaker
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{
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protected:
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hsTArray<plSpacePrepNode*> fLeaves; // input
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hsRadixSortElem* fSortScratch;
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hsBitVector fDisabled;
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plSpacePrepNode* fPrepTree;
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Int16 fTreeSize;
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plSpacePrepNode* INewSubRoot(const hsBounds3Ext& bnd);
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void IFindBigList(hsTArray<plSpacePrepNode*>& nodes, hsScalar length, const hsVector3& axis, hsTArray<plSpacePrepNode*>& giants, hsTArray<plSpacePrepNode*>& strimp);
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void ISortList(hsTArray<plSpacePrepNode*>& nodes, const hsVector3& axis);
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void ISplitList(hsTArray<plSpacePrepNode*>& nodes, const hsVector3& axis, hsTArray<plSpacePrepNode*>& lower, hsTArray<plSpacePrepNode*>& upper);
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hsBounds3Ext IFindDistToCenterAxis(hsTArray<plSpacePrepNode*>& nodes, hsScalar& length, hsVector3& axis);
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plSpacePrepNode* IMakeFatTreeRecur(hsTArray<plSpacePrepNode*>& nodes);
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hsBounds3Ext IFindSplitAxis(hsTArray<plSpacePrepNode*>& nodes, hsScalar& length, hsVector3& axis);
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plSpacePrepNode* IMakeTreeRecur(hsTArray<plSpacePrepNode*>& nodes);
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void IMakeTree();
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plSpaceTree* IMakeEmptyTree();
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plSpaceTree* IMakeDegenerateTree();
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void IGatherLeavesRecur(plSpacePrepNode* sub, plSpaceTree* tree);
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void IMakeSpaceTreeRecur(plSpacePrepNode* sub, plSpaceTree* tree, const int targetLevel, int currLevel);
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plSpaceTree* IMakeSpaceTree();
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int ITreeDepth(plSpacePrepNode* subRoot);
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void IDeleteTreeRecur(plSpacePrepNode* node);
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public:
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void Cleanup();
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void Reset();
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Int32 AddLeaf(const hsBounds3Ext& worldBnd, hsBool disable=false);
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plSpaceTree* MakeTree();
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void TestTree(); // development only - NUKE ME mf horse
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};
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#endif // plSpaceTreeMaker_inc
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