OgreConvexBody.h

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00001 /*
00002 -----------------------------------------------------------------------------
00003 This source file is part of OGRE
00004 (Object-oriented Graphics Rendering Engine)
00005 For the latest info, see http://www.ogre3d.org/
00006 
00007 Copyright (c) 2000-2006 Torus Knot Software Ltd
00008 Copyright (c) 2006 Matthias Fink, netAllied GmbH <matthias.fink@web.de>                             
00009 Also see acknowledgements in Readme.html
00010 
00011 This program is free software; you can redistribute it and/or modify it under
00012 the terms of the GNU Lesser General Public License as published by the Free Software
00013 Foundation; either version 2 of the License, or (at your option) any later
00014 version.
00015 
00016 This program is distributed in the hope that it will be useful, but WITHOUT
00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00018 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
00019 
00020 You should have received a copy of the GNU Lesser General Public License along with
00021 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
00022 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
00023 http://www.gnu.org/copyleft/lesser.txt.
00024 
00025 You may alternatively use this source under the terms of a specific version of
00026 the OGRE Unrestricted License provided you have obtained such a license from
00027 Torus Knot Software Ltd.
00028 -----------------------------------------------------------------------------
00029 */
00030 #ifndef __ConvexBody_H__
00031 #define __ConvexBody_H__
00032 
00033 #include "OgrePrerequisites.h"
00034 #include "OgrePolygon.h"
00035 
00036 
00037 namespace Ogre
00038 {
00039 
00046     class _OgreExport ConvexBody
00047     {
00048     public:
00049         typedef std::vector< Polygon* > PolygonList;
00050 
00051     protected:
00052         PolygonList mPolygons;
00053 
00054         // Static 'free list' of polygons to save reallocation, shared between all bodies
00055         static PolygonList msFreePolygons;
00056 #if OGRE_THREAD_SUPPORT
00057         static boost::recursive_mutex msFreePolygonsMutex;
00058 #endif
00059 
00060     public:
00061         ConvexBody();
00062         ~ConvexBody();
00063         ConvexBody( const ConvexBody& cpy );
00064 
00067         void define(const Frustum& frustum);
00068 
00071         void define(const AxisAlignedBox& aab);
00072 
00076         void clip( const Frustum& frustum );
00077 
00081         void clip( const AxisAlignedBox& aab );
00082 
00085         void clip(const ConvexBody& body);
00086 
00089         void clip(const Plane& pl, bool keepNegative = true);
00090 
00097         void extend(const Vector3& pt);
00098 
00101         void reset( void );
00102 
00105         size_t getPolygonCount( void ) const;
00106 
00109         size_t getVertexCount( size_t poly ) const;
00110 
00113         const Polygon& getPolygon( size_t poly ) const;
00114 
00117         const Vector3& getVertex( size_t poly, size_t vertex ) const;
00118 
00121         const Vector3& getNormal( size_t poly );
00122 
00125         AxisAlignedBox getAABB( void ) const;
00126 
00129         bool hasClosedHull( void ) const;
00130 
00134         void mergePolygons( void );
00135 
00138         bool operator == ( const ConvexBody& rhs ) const;
00139 
00142         bool operator != ( const ConvexBody& rhs ) const
00143         { return !( *this == rhs ); }
00144 
00147         _OgreExport friend std::ostream& operator<< ( std::ostream& strm, const ConvexBody& body );
00148 
00150         void logInfo() const;
00151 
00153         static void _initialisePool();
00155         static void _destroyPool();
00156 
00157 
00158     protected:
00161         static Polygon* allocatePolygon();
00163         static void freePolygon(Polygon* poly);
00169         void insertPolygon(Polygon* pdata, size_t poly);
00175         void insertPolygon(Polygon* pdata);
00176 
00182         void insertVertex(size_t poly, const Vector3& vdata, size_t vertex);
00188         void insertVertex(size_t poly, const Vector3& vdata);
00191         void deletePolygon(size_t poly);
00192 
00197         Polygon* unlinkPolygon(size_t poly);
00198 
00202         void moveDataFromBody(ConvexBody& body);
00203 
00206         void deleteVertex(size_t poly, size_t vertex);
00207 
00212         void setPolygon(Polygon* pdata, size_t poly );
00213 
00219         void setVertex( size_t poly, const Vector3& vdata, size_t vertex );
00220 
00224         Polygon::EdgeMap getSingleEdges() const;
00225 
00228         void storeEdgesOfPolygon(size_t poly, Polygon::EdgeMap *edgeMap) const;
00229             
00235         void allocateSpace(size_t numPolygons, size_t numVertices);
00236 
00245         bool findAndEraseEdgePair(const Vector3& vec, 
00246             Polygon::EdgeMap& intersectionEdges, Vector3& vNext ) const;
00247 
00248     };
00249 }
00250 
00251 #endif 
00252 

Copyright © 2008 Torus Knot Software Ltd
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Last modified Sun Sep 27 22:02:22 2009