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/* SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once
/** \file
* \ingroup freestyle
* \brief Class to define Perlin noise
*/
#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 to provide Perlin Noise functionalities */
class Noise {
public:
/** Builds a Noise object */
Noise(long seed = -1);
/** Destructor */
~Noise()
{
}
/** Returns a noise value for a 1D element */
float turbulence1(float arg, float freq, float amp, unsigned oct = 4);
/** Returns a noise value for a 2D element */
float turbulence2(Vec2f &v, float freq, float amp, unsigned oct = 4);
/** Returns a noise value for a 3D element */
float turbulence3(Vec3f &v, float freq, float amp, unsigned oct = 4);
/** Returns a smooth noise value for a 1D element */
float smoothNoise1(float arg);
/** Returns a smooth noise value for a 2D element */
float smoothNoise2(Vec2f &vec);
/** Returns a smooth noise value for a 3D element */
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 */
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