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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_NOISE_VALUE_H
00027 #define NL_NOISE_VALUE_H
00028 
00029 #include "nel/misc/types_nl.h"
00030 #include "nel/misc/vector.h"
00031 #include "nel/misc/stream.h"
00032 #include "nel/misc/rgba.h"
00033 
00034 
00035 namespace NL3D 
00036 {
00037 
00038 
00039 using NLMISC::CVector;
00040 
00041 
00042 // ***************************************************************************
00049 class   CNoiseValue
00050 {
00051 public:
00052         float   Abs;
00053         float   Rand;
00054         float   Frequency;
00055 
00056 public:
00058         CNoiseValue();
00059         CNoiseValue(float abs, float rand, float freq);
00060 
00064         float   eval(const CVector &posInWorld) const;
00065 
00069         float   evalOneLevelRandom(const CVector &posInWorld) const;
00070 
00071 
00072         void    serial(NLMISC::IStream &f);
00073 
00074 // *******************
00075 private:
00077         float   noise(const CVector &pos) const;
00078         float   evalRandom(const CVector &pos) const;
00079 };
00080 
00081 
00082 // ***************************************************************************
00089 class   CNoiseColorGradient
00090 {
00091 public:
00093         CNoiseValue                                     NoiseValue;
00094         std::vector<NLMISC::CRGBAF>     Gradients;
00095 
00096 
00097 public:
00102         void    eval(const CVector &posInWorld, NLMISC::CRGBAF &result) const;
00103 
00104         void    serial(NLMISC::IStream &f);
00105 };
00106 
00107 
00108 
00109 } // NL3D
00110 
00111 
00112 #endif // NL_NOISE_VALUE_H
00113 
00114 /* End of noise_value.h */