cstool/noise/module/ridgedmulti.h
00001 // ridgedmulti.h 00002 // 00003 // Copyright (C) 2003, 2004 Jason Bevins 00004 // 00005 // This library is free software; you can redistribute it and/or modify it 00006 // under the terms of the GNU Lesser General Public License as published by 00007 // the Free Software Foundation; either version 2.1 of the License, or (at 00008 // your option) any later version. 00009 // 00010 // This library is distributed in the hope that it will be useful, but WITHOUT 00011 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00012 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 00013 // License (COPYING.txt) for more details. 00014 // 00015 // You should have received a copy of the GNU Lesser General Public License 00016 // along with this library; if not, write to the Free Software Foundation, 00017 // Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00018 // 00019 // The developer's email is jlbezigvins@gmzigail.com (for great email, take 00020 // off every 'zig'.) 00021 // 00022 00023 #ifndef NOISE_MODULE_RIDGEDMULTI_H 00024 #define NOISE_MODULE_RIDGEDMULTI_H 00025 00026 #include "modulebase.h" 00027 00028 namespace CS { 00029 namespace Math { 00030 namespace Noise { 00031 namespace Module { 00032 00035 00038 00041 00043 const double DEFAULT_RIDGED_FREQUENCY = 1.0; 00044 00046 const double DEFAULT_RIDGED_LACUNARITY = 2.0; 00047 00050 const int DEFAULT_RIDGED_OCTAVE_COUNT = 6; 00051 00054 const CS::Math::Noise::NoiseQuality DEFAULT_RIDGED_QUALITY = QUALITY_STD; 00055 00057 const int DEFAULT_RIDGED_SEED = 0; 00058 00061 const int RIDGED_MAX_OCTAVE = 30; 00062 00127 class CS_CRYSTALSPACE_EXPORT RidgedMulti: public Module 00128 { 00129 00130 public: 00131 00145 RidgedMulti (); 00146 00150 double GetFrequency () const 00151 { 00152 return m_frequency; 00153 } 00154 00161 double GetLacunarity () const 00162 { 00163 return m_lacunarity; 00164 } 00165 00172 CS::Math::Noise::NoiseQuality GetNoiseQuality () const 00173 { 00174 return m_noiseQuality; 00175 } 00176 00185 int GetOctaveCount () const 00186 { 00187 return m_octaveCount; 00188 } 00189 00194 int GetSeed () const 00195 { 00196 return m_seed; 00197 } 00198 00199 virtual int GetSourceModuleCount () const 00200 { 00201 return 0; 00202 } 00203 00204 virtual double GetValue (double x, double y, double z) const; 00205 00209 void SetFrequency (double frequency) 00210 { 00211 m_frequency = frequency; 00212 } 00213 00223 void SetLacunarity (double lacunarity) 00224 { 00225 m_lacunarity = lacunarity; 00226 CalcSpectralWeights (); 00227 } 00228 00235 void SetNoiseQuality (CS::Math::Noise::NoiseQuality noiseQuality) 00236 { 00237 m_noiseQuality = noiseQuality; 00238 } 00239 00257 void SetOctaveCount (int octaveCount) 00258 { 00259 if (octaveCount > RIDGED_MAX_OCTAVE) { 00260 //throw CS::Math::Noise::ExceptionInvalidParam (); 00261 CS_ASSERT (false); 00262 } 00263 m_octaveCount = octaveCount; 00264 } 00265 00270 void SetSeed (int seed) 00271 { 00272 m_seed = seed; 00273 } 00274 00275 protected: 00276 00280 void CalcSpectralWeights (); 00281 00283 double m_frequency; 00284 00286 double m_lacunarity; 00287 00289 CS::Math::Noise::NoiseQuality m_noiseQuality; 00290 00293 int m_octaveCount; 00294 00296 double m_pSpectralWeights[RIDGED_MAX_OCTAVE]; 00297 00299 int m_seed; 00300 00301 }; 00302 00304 00306 00308 00309 } // namespace Module 00310 } // namespace Noise 00311 } // namespace Math 00312 } // namespace CS 00313 00314 #endif
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