Implements a multi-layer PerlinNoise, with one or more high-frequency noise functions added to a lower-frequency base noise function. More...

#include "stackedPerlinNoise2.h"

Public Member Functions
	StackedPerlinNoise2 ()
	Creates a StackedPerlinNoise2 object with no levels. More...

	StackedPerlinNoise2 (double sx, double sy, int num_levels=2, double scale_factor=4.0f, double amp_scale=0.5f, int table_size=256, unsigned long seed=0)
	Creates num_levels nested PerlinNoise2 objects. More...

	StackedPerlinNoise2 (const StackedPerlinNoise2 &copy)
	Creates an exact duplicate of the existing StackedPerlinNoise2 object, including the random seed. More...

void	add_level (const PerlinNoise2 &level, double amp=1.0)
	Adds an arbitrary PerlinNoise2 object, and an associated amplitude, to the stack. More...

void	clear ()
	Removes all levels from the stack. More...

double	noise (double x, double y)
	Returns the noise function of the three inputs. More...

float	noise (const LVecBase2f &value)
	Returns the noise function of the three inputs. More...

double	noise (const LVecBase2d &value)
	Returns the noise function of the three inputs. More...

double	operator() (double x, double y)
	Returns the noise function of the three inputs. More...

float	operator() (const LVecBase2f &value)
	Returns the noise function of the three inputs. More...

double	operator() (const LVecBase2d &value)
	Returns the noise function of the three inputs. More...

void	operator= (const StackedPerlinNoise2 &copy)
	Creates an exact duplicate of the existing StackedPerlinNoise2 object, including the random seed. More...

Detailed Description

Implements a multi-layer PerlinNoise, with one or more high-frequency noise functions added to a lower-frequency base noise function.

Definition at line 25 of file stackedPerlinNoise2.h.

Constructor & Destructor Documentation

◆ StackedPerlinNoise2() [1/3]

StackedPerlinNoise2::StackedPerlinNoise2 ( )

inline

Creates a StackedPerlinNoise2 object with no levels.

You should call add_level() to add each level by hand.

Definition at line 19 of file stackedPerlinNoise2.I.

◆ StackedPerlinNoise2() [2/3]

StackedPerlinNoise2::StackedPerlinNoise2	(	double	sx,
		double	sy,
		int	num_levels = `2`,
		double	scale_factor = `4.0f`,
		double	amp_scale = `0.5f`,
		int	table_size = `256`,
		unsigned long	seed = `0`
	)

explicit

Creates num_levels nested PerlinNoise2 objects.

Each stacked Perlin object will have a scale of 1 scale_factor times the previous object (so that it is higher-frequency, if scale_factor > 1), and an amplitude of amp_scale times the previous object (so that it is less important, if amp_scale < 1).

Definition at line 23 of file stackedPerlinNoise2.cxx.

◆ StackedPerlinNoise2() [3/3]

StackedPerlinNoise2::StackedPerlinNoise2 ( const StackedPerlinNoise2 & copy )

Creates an exact duplicate of the existing StackedPerlinNoise2 object, including the random seed.

Definition at line 44 of file stackedPerlinNoise2.cxx.

Member Function Documentation

◆ add_level()

void StackedPerlinNoise2::add_level	(	const PerlinNoise2 &	level,
		double	amp = `1.0`
	)

Adds an arbitrary PerlinNoise2 object, and an associated amplitude, to the stack.

Definition at line 63 of file stackedPerlinNoise2.cxx.

◆ clear()

void StackedPerlinNoise2::clear ( )

Removes all levels from the stack.

You must call add_level() again to restore them.

Definition at line 75 of file stackedPerlinNoise2.cxx.