cstool/noise/module/turbulence.h
00001 // turbulence.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_TURBULENCE_H 00024 #define NOISE_MODULE_TURBULENCE_H 00025 00026 #include "perlin.h" 00027 00028 namespace CS { 00029 namespace Math { 00030 namespace Noise { 00031 namespace Module { 00032 00035 00038 00041 00043 const double DEFAULT_TURBULENCE_FREQUENCY = DEFAULT_PERLIN_FREQUENCY; 00044 00046 const double DEFAULT_TURBULENCE_POWER = 1.0; 00047 00049 const int DEFAULT_TURBULENCE_ROUGHNESS = 3; 00050 00052 const int DEFAULT_TURBULENCE_SEED = DEFAULT_PERLIN_SEED; 00053 00112 class CS_CRYSTALSPACE_EXPORT Turbulence: public Module 00113 { 00114 00115 public: 00116 00130 Turbulence (); 00131 00138 double GetFrequency () const; 00139 00146 double GetPower () const 00147 { 00148 return m_power; 00149 } 00150 00159 int GetRoughnessCount () const 00160 { 00161 return m_xDistortModule.GetOctaveCount (); 00162 } 00163 00172 int GetSeed () const; 00173 00174 virtual int GetSourceModuleCount () const 00175 { 00176 return 1; 00177 } 00178 00179 virtual double GetValue (double x, double y, double z) const; 00180 00187 void SetFrequency (double frequency) 00188 { 00189 // Set the frequency of each Perlin-noise module. 00190 m_xDistortModule.SetFrequency (frequency); 00191 m_yDistortModule.SetFrequency (frequency); 00192 m_zDistortModule.SetFrequency (frequency); 00193 } 00194 00201 void SetPower (double power) 00202 { 00203 m_power = power; 00204 } 00205 00220 void SetRoughness (int roughness) 00221 { 00222 // Set the octave count for each Perlin-noise module. 00223 m_xDistortModule.SetOctaveCount (roughness); 00224 m_yDistortModule.SetOctaveCount (roughness); 00225 m_zDistortModule.SetOctaveCount (roughness); 00226 } 00227 00240 void SetSeed (int seed); 00241 00242 protected: 00243 00245 double m_power; 00246 00248 Perlin m_xDistortModule; 00249 00251 Perlin m_yDistortModule; 00252 00254 Perlin m_zDistortModule; 00255 00256 }; 00257 00259 00261 00263 00264 } // namespace Module 00265 } // namespace Noise 00266 } // namespace Math 00267 } // namespace CS 00268 00269 #endif
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