Fractal noise. More...

#include <gf/Noise.h>

Public Member Functions
	FractalNoise (std::function< double(double, double)> noise, double scale, std::size_t octaves=8, double lacunarity=2.0, double persistence=0.5, double dimension=1.0)
	Constructor. More...

double	operator() (double x, double y) const
	Take a noise value. More...

Detailed Description

Fractal noise.

Fractal noise is based of fractional Brownian motion (fBm). It consists in adding several octaves of a basic noise at different amplitudes.

Constructor & Destructor Documentation

gf::FractalNoise::FractalNoise	(	std::function< double(double, double)>	noise,
		double	scale,
		std::size_t	octaves = `8`,
		double	lacunarity = `2.0`,
		double	persistence = `0.5`,
		double	dimension = `1.0`
	)

inline

Constructor.

Parameters

noise	The basic noise function
scale	The scale factor
octaves	The number of octaves
lacunarity	The factor applied to frequency
persistence	The factor applied to amplitude
dimension	The contrast between the layers

double gf::FractalNoise::operator()	(	double	x,
		double	y
	)		const

Take a noise value.

Parameters

x	The x coordinate of the noise value
y	The y coordinate of the noise value