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00001 
00007 /* Copyright, 2000 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_TRIANGLE_H
00027 #define NL_TRIANGLE_H
00028 
00029 #include "nel/misc/types_nl.h"
00030 #include "nel/misc/vector.h"
00031 
00032 namespace NLMISC
00033 {
00034         class CPlane;
00035 }
00036 
00037 namespace NLMISC 
00038 {
00039 
00040 
00041 using NLMISC::CVector;
00042 
00043 
00044 // ***************************************************************************
00051 class CTriangle
00052 {
00053 public:
00054         CVector         V0,V1,V2;
00055 
00056 public:
00058         CTriangle() {}
00060         CTriangle(const CVector &a, const CVector &b, const CVector &c) : V0(a), V1(b), V2(c) {}
00061 
00075         bool intersect (const CVector& p0, const CVector& p1, CVector& hit, const class NLMISC::CPlane& plane) const;
00076 
00082         void    computeGradient(float c0, float c1, float c2, CVector &grad) const;
00083 };
00084 
00085 
00086 } // NLMISC
00087 
00088 
00089 #endif // NL_TRIANGLE_H
00090 
00091 /* End of triangle.h */