Noise.h

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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
 
#pragma once
 
#include "Geom.h"
 
#include "../system/FreestyleConfig.h"
 
#ifdef WITH_CXX_GUARDEDALLOC
#  include "MEM_guardedalloc.h"
#endif
 
using namespace std;
 
namespace Freestyle {
 
#define _NOISE_B 0x100
 
using namespace Geometry;
 
class Noise {
 public:
  Noise(long seed = -1);
 
  ~Noise()
  {
  }
 
  float turbulence1(float arg, float freq, float amp, unsigned oct = 4);
 
  float turbulence2(Vec2f &v, float freq, float amp, unsigned oct = 4);
 
  float turbulence3(Vec3f &v, float freq, float amp, unsigned oct = 4);
 
  float smoothNoise1(float arg);
 
  float smoothNoise2(Vec2f &vec);
 
  float smoothNoise3(Vec3f &vec);
 
 private:
  int p[_NOISE_B + _NOISE_B + 2];
  float g3[_NOISE_B + _NOISE_B + 2][3];
  float g2[_NOISE_B + _NOISE_B + 2][2];
  float g1[_NOISE_B + _NOISE_B + 2];
  /* UNUSED */
  // int start;
 
#ifdef WITH_CXX_GUARDEDALLOC
  MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:Noise")
#endif
};
 
} /* namespace Freestyle */