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ddgNoise Class Reference

A noise generation class based on Perlin noise. More...

#include <ddgnoise.h>

List of all members.

Static Public Members
		double	noise1 (double point)
			Generate noise value for a 1D location. More...
		double	noise2 (double *point)
			Generate noise value for a 2D location. More...
		double	noise3 (double *point)
			Generate noise value for a 3D location. More...
		double	noise (double *point, int len)
			General noise function calls the previous 3 depending on len. More...
		double	turbulence (double *point, double freq)
			Generate turbulent noise across a number of octaves. More...
		double	onoise (double *point, double freq)
			Noise across a number of octaves. More...
		double	cloud ( double *point, double freq, int cc, double cs )
			Cloud noise with cloud cover and cloudsharpness. More...
		double	fBm ( double* point, double H, double lacunarity, double octaves)
			Fractal brownian motion. More...
		double	multifractal ( double* point, double H, double lacunarity, double octaves, double offset )
			Multifractal function H range fractal dimension 1.0 - 0.0 where 0.0 is total chaos. More...
		double	hybridmultifractal ( double* point, double H, double lacunarity, double octaves, double offset )
			Multifractal function H range fractal dimension 1.0 - 0.0 where 0.0 is total chaos. More...
		double	four_noise (double* point, double time)
			4D Noise. More...

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Detailed Description

A noise generation class based on Perlin noise.

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Member Function Documentation

double ddgNoise::noise1 (double point) [static]

Generate noise value for a 1D location.

Returns values between -1.0 and 1.0.

double ddgNoise::noise2 (double * point) [static]

Generate noise value for a 2D location.

Returns values between -1.0 and 1.0.

double ddgNoise::noise3 (double * point) [static]

Generate noise value for a 3D location.

Returns values between -1.0 and 1.0.

double ddgNoise::noise (double * point, int len) [static]

General noise function calls the previous 3 depending on len.

Input range from 0 to 3 works well. Returns values between -1.0 and 1.0.

double ddgNoise::turbulence (double * point, double freq) [static]

Generate turbulent noise across a number of octaves.

Returns values between -1.0 and 1.0.

double ddgNoise::onoise (double * point, double freq) [static]

Noise across a number of octaves.

Returns values between -1.0 and 1.0.

double ddgNoise::cloud (double * point, double freq, int cc, double cs) [static]

Cloud noise with cloud cover and cloudsharpness.

cc - cloud cover from 0.0 (total) to 1.0 (empty). cs - cloud sharpness from 0.0 to 1.0. Returns values between 0.0 and 1.0.

double ddgNoise::fBm (double * point, double H, double lacunarity, double octaves) [static]

Fractal brownian motion.

H range fractal dimension 1.0 - 0.0 where 0.0 is total chaos. lacunarity gap between successive frequencies, use 2.0 Octaves is the number of frequencies in the fBm. 3-7 Returns values between -1.0 and 1.0.

double ddgNoise::multifractal (double * point, double H, double lacunarity, double octaves, double offset) [static]

Multifractal function H range fractal dimension 1.0 - 0.0 where 0.0 is total chaos.

lacunarity gap between successive frequencies, use 2.0 Octaves is the number of frequencies in the fBm. 3-7 offset is the zero offset, which determines multifractality. eg. 0.3 Returns values between -n and n.

double ddgNoise::hybridmultifractal (double * point, double H, double lacunarity, double octaves, double offset) [static]

Multifractal function H range fractal dimension 1.0 - 0.0 where 0.0 is total chaos.

Eg 0.25 lacunarity gap between successive frequencies, use 2.0 Octaves is the number of frequencies in the fBm. 3-7 offset is the zero offset, which determines multifractality. eg. 0.7 Returns values between -n and n.

double ddgNoise::four_noise (double * point, double time) [static]

4D Noise.

Input values between 0 to 5. Time between 0 and 10. Returns values between 0.0 and 1.0

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The documentation for this class was generated from the following files:

• ddgnoise.h
• ddgnoise.cpp

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