Gamedev Framework (gf)  0.10.0
A C++14 framework for 2D games
Public Member Functions | List of all members
gf::FractalNoise2D Class Reference

Fractal 2D noise. More...

#include <gf/Noises.h>

Inheritance diagram for gf::FractalNoise2D:
Inheritance graph

Public Member Functions

 FractalNoise2D (Noise2D &noise, double scale, std::size_t octaves=8, double lacunarity=2.0, double persistence=0.5, double dimension=1.0)
 Constructor. More...
virtual double getValue (double x, double y) override
 Take a 2D noise value. More...
- Public Member Functions inherited from gf::Noise2D
virtual ~Noise2D ()
 Virtual destructor. More...
double operator() (double x, double y)
 Take a 2D noise value. More...

Detailed Description

Fractal 2D 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

◆ FractalNoise2D()

gf::FractalNoise2D::FractalNoise2D ( Noise2D noise,
double  scale,
std::size_t  octaves = 8,
double  lacunarity = 2.0,
double  persistence = 0.5,
double  dimension = 1.0 


noiseThe basic noise function
scaleThe scale factor
octavesThe number of octaves
lacunarityThe factor applied to frequency
persistenceThe factor applied to amplitude
dimensionThe contrast between the layers

Member Function Documentation

◆ getValue()

virtual double gf::FractalNoise2D::getValue ( double  x,
double  y 

Take a 2D noise value.

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

Implements gf::Noise2D.