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00001 
00007 /* Copyright, 2001 Nevrax Ltd.
00008  *
00009  * This file is part of NEVRAX NEL.
00010  * NEVRAX NEL is free software; you can redistribute it and/or modify
00011  * it under the terms of the GNU General Public License as published by
00012  * the Free Software Foundation; either version 2, or (at your option)
00013  * any later version.
00014 
00015  * NEVRAX NEL is distributed in the hope that it will be useful, but
00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00018  * General Public License for more details.
00019 
00020  * You should have received a copy of the GNU General Public License
00021  * along with NEVRAX NEL; see the file COPYING. If not, write to the
00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
00023  * MA 02111-1307, USA.
00024  */
00025 
00026 #ifndef NL_CHAIN_QUAD_H
00027 #define NL_CHAIN_QUAD_H
00028 
00029 #include "nel/misc/types_nl.h"
00030 #include "nel/misc/aabbox.h"
00031 #include "pacs/chain.h"
00032 #include "pacs/collision_surface_temp.h"
00033 #include <vector>
00034 
00035 
00036 class NLMISC::IStream;
00037 
00038 
00039 namespace NLPACS 
00040 {
00041 
00042 using   NLMISC::CVector;
00043 using   NLMISC::IStream;
00044 
00045 // ***************************************************************************
00046 struct EChainQuad : public NLMISC::Exception
00047 {
00048         EChainQuad(const std::string &reason) : Exception(reason) { }
00049 };
00050 
00051 
00052 // ***************************************************************************
00059 class CChainQuad
00060 {
00061 public:
00062 
00064         CChainQuad();
00066         CChainQuad(const CChainQuad &o);
00068         ~CChainQuad();
00070         CChainQuad &operator=(const CChainQuad &o);
00071 
00072 
00074         void                    build(const std::vector<COrderedChain> &ochains);
00075 
00076 
00083         sint                    selectEdges(const NLMISC::CAABBox &bbox, CCollisionSurfaceTemp &cst) const;
00084 
00092         sint                    selectEdges(CVector start, CVector end, CCollisionSurfaceTemp &cst) const;
00093 
00094 
00096         void                                                            serial(NLMISC::IStream &f);
00097 
00098 
00099 // **************************
00100 private:
00101 
00105         std::vector<uint8*>             _Quad;
00107         uint32                                  _Width;
00109         uint32                                  _Height;
00111         sint32                                  _X, _Y;
00113         uint8                                   *_QuadData;
00115         uint32                                  _QuadDataLen;
00116 
00117 
00118         static const    float   _QuadElementSize;       // = 4 meters.
00119 
00120 
00121 private:
00122         void                    addEdgeToQuadNode(std::list<CEdgeChainEntry> &quadNode, sint ochainId, sint edgeId);
00123 
00124         // get local integer bounds in the grid.
00125         void                    getGridBounds(sint32 &x0, sint32 &y0, sint32 &x1, sint32 &y1, const CVector &minP, const CVector &maxP) const;
00126 
00127 };
00128 
00129 
00130 } // NLPACS
00131 
00132 
00133 #endif // NL_CHAIN_QUAD_H
00134 
00135 /* End of chain_quad.h */