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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_PS_PLANE_BASIS_H
+00027 #define NL_PS_PLANE_BASIS_H
+00028 
+00029 #include "nel/misc/types_nl.h"
+00030 #include "nel/misc/vector.h"
+00031 #include "nel/misc/matrix.h"
+00032 #include "3d/ps_util.h"
+00033 
+00034 
+00035 namespace NL3D {
+00036 
+00037 
+00038 
+00039 
+00040 
+00045 struct CPlaneBasis
+00046 {       
+00047         NLMISC::CVector X ;
+00048         NLMISC::CVector Y ;
+00049 
+00050 
+00051         // default ctor
+00052         CPlaneBasis() {}
+00053 
+00054         
+00055         // construct this basis by giving a normal to the plane that contains it
+00056         CPlaneBasis(const NLMISC::CVector &normal)
+00057         {
+00058                 NLMISC::CMatrix mat;
+00059                 CPSUtil::buildSchmidtBasis(normal, mat) ;
+00060                 X = mat.getI() ;
+00061                 Y = mat.getJ() ;
+00062         }
+00063 
+00064         // construct this basis by giving its X and Y vectors
+00065         CPlaneBasis(const NLMISC::CVector &x, const NLMISC::CVector &y) : X(x), Y(y)
+00066         {               
+00067         }
+00068 
+00070         NLMISC::CVector getNormal(void) const
+00071         {
+00072                 return X ^ Y ;
+00073         }
+00074 
+00075 
+00076         void serial(NLMISC::IStream &f) throw(NLMISC::EStream)
+00077         {
+00078                 f.serial(X, Y) ;
+00079         }
+00080 } ;
+00081 
+00082 
+00083 // for map insertion
+00084 
+00085 inline bool operator<(const CPlaneBasis &p1, const CPlaneBasis &p2)
+00086 {
+00087         if (p1.X < p2.X) return true ;
+00088         else if (p1.X == p2.X) return false ;
+00089                 else if (p1.Y < p2.Y) return true ;
+00090                         else if (p1.X == p2.Y) return false ;
+00091                                 else return true ;
+00092 }
+00093 
+00094 
+00095 
+00096 
+00097 
+00098 
+00099 } // NL3D
+00100 
+00101 
+00102 #endif // NL_PS_PLANE_BASIS_H
+00103 
+00104 /* End of ps_plane_basis.h */
+