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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_ATTRIB_MAKER_ITERATORS_H
+00027 #define NL_PS_ATTRIB_MAKER_ITERATORS_H
+00028 
+00029 #include "3d/ps_attrib.h"
+00030 #include "3d/ps_iterator.h"
+00031 
+00032 
+00033 
+00034 namespace NL3D 
+00035 {
+00036 
+00042         template <typename TBaseIter>
+00043         struct CPSBaseIterator
+00044         {
+00045                 TBaseIter       Iter;
+00047                 CPSBaseIterator() {}
+00048                 CPSBaseIterator(TBaseIter it) : Iter(it) {}                     
+00049                 GET_INLINE float get() const { return Iter.get(); }
+00050                 void  advance() { Iter.advance(); }     
+00051         };
+00052         
+00057         template <class TBaseIter>
+00058         struct CVectNormIterator : CPSBaseIterator<TBaseIter>
+00059         {                               
+00060                 GET_INLINE float get() const { return Iter.get().norm(); }
+00061                 CVectNormIterator(const TBaseIter &it) : CPSBaseIterator<TBaseIter>(it) {}
+00062         };
+00063 
+00068         struct CRandomIterator
+00069         {
+00070                 GET_INLINE float get() const { return float(rand() * (1 / double(RAND_MAX))); } // this may be optimized with a table...
+00071                 void  advance() {}
+00072                 void  advance(uint quantity) {}
+00073         };                      
+00074 
+00076         struct CDecalIterator
+00077         {
+00078                 float Value;                    
+00079                 GET_INLINE float get() const { return Value; }
+00080                 void  advance() {}
+00081                 void  advance(uint quantity) {}                         
+00082         };
+00083 
+00085         template <class TBaseIter>
+00086         struct CDistIterator : CPSBaseIterator<TBaseIter>
+00087         {               
+00088                 NLMISC::CVector V; 
+00089                 float Offset;
+00090                 CDistIterator(const TBaseIter &it) : CPSBaseIterator<TBaseIter>(it) {}
+00091         };
+00092 
+00093 
+00095         template <class TBaseIter>
+00096         struct CFDot3AddIterator : CDistIterator<TBaseIter>
+00097         {                                                                       
+00098                 GET_INLINE 
+00099                 float get() const 
+00100                 { 
+00101                         const float r = fabsf(Iter.get() * V + Offset);
+00102                         return r > MaxInputValue ? MaxInputValue : r;
+00103                 }
+00104                 CFDot3AddIterator(const TBaseIter &it) : CDistIterator<TBaseIter>(it) {}
+00105         };
+00106 
+00108         template <class TBaseIter>
+00109         struct CFSquareDot3AddIterator : CDistIterator<TBaseIter>
+00110         {                               
+00111                 float get() const 
+00112                 { 
+00113                         float r = Iter.get() * V + Offset;
+00114                         r *= r;
+00115                         return r > MaxInputValue ? MaxInputValue : r;
+00116                 }
+00117                 CFSquareDot3AddIterator(const TBaseIter &it) : CDistIterator<TBaseIter>(it) {}
+00118         };
+00119 
+00121         template <class TBaseIter>
+00122         struct CFClampDot3AddIterator : CDistIterator<TBaseIter>
+00123         {                               
+00124                 GET_INLINE
+00125                 float get() const 
+00126                 { 
+00127                         const float r = Iter.get() * V + Offset;
+00128                         if (r < 0.f) return MaxInputValue;
+00129                         return r > MaxInputValue ? MaxInputValue : r;
+00130                 }
+00131                 CFClampDot3AddIterator(const TBaseIter &it) : CDistIterator<TBaseIter>(it) {}
+00132         };
+00133 
+00134 
+00136         template <class TBaseIter>
+00137         struct CFClampSquareDot3AddIterator : CDistIterator<TBaseIter>
+00138         {       
+00139                 GET_INLINE
+00140                 float get() const 
+00141                 { 
+00142                         float r = Iter.get() * V + Offset;
+00143                         if (r < 0) return MaxInputValue;
+00144                         r *= r;
+00145                         return r > MaxInputValue ? MaxInputValue : r;
+00146                 }
+00147                 CFClampSquareDot3AddIterator(const TBaseIter &it) : CDistIterator<TBaseIter>(it) {}                                             
+00148         };
+00149 
+00150         
+00151 } 
+00152 
+00153 
+00154 #endif
+
ps_attrib_maker_iterators.h
