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StackedPerlinNoise2 Class Reference

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"

List of all members.

Classes

class  Noise

Public Member Functions

 StackedPerlinNoise2 ()
 Creates a StackedPerlinNoise2 object with no levels.
 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.
 StackedPerlinNoise2 (const StackedPerlinNoise2 &copy)
 Creates an exact duplicate of the existing StackedPerlinNoise2 object, including the random seed.
void add_level (const PerlinNoise2 &level, double amp=1.0)
 Adds an arbitrary PerlinNoise2 object, and an associated amplitude, to the stack.
void clear ()
 Removes all levels from the stack.
float noise (const LVecBase2f &value)
 Returns the noise function of the three inputs.
double noise (const LVecBase2d &value)
 Returns the noise function of the three inputs.
double noise (double x, double y)
 Returns the noise function of the three inputs.
double operator() (const LVecBase2d &value)
 Returns the noise function of the three inputs.
double operator() (double x, double y)
 Returns the noise function of the three inputs.
float operator() (const LVecBase2f &value)
 Returns the noise function of the three inputs.
void operator= (const StackedPerlinNoise2 &copy)
 Creates an exact duplicate of the existing StackedPerlinNoise2 object, including the random seed.

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 28 of file stackedPerlinNoise2.h.


Constructor & Destructor Documentation

StackedPerlinNoise2::StackedPerlinNoise2 ( ) [inline]

Creates a StackedPerlinNoise2 object with no levels.

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

Definition at line 24 of file stackedPerlinNoise2.I.

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 
)

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 28 of file stackedPerlinNoise2.cxx.

References add_level(), PerlinNoise::get_seed(), and noise().

StackedPerlinNoise2::StackedPerlinNoise2 ( const StackedPerlinNoise2 copy)

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

Definition at line 52 of file stackedPerlinNoise2.cxx.


Member Function Documentation

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 76 of file stackedPerlinNoise2.cxx.

Referenced by StackedPerlinNoise2().

void StackedPerlinNoise2::clear ( )

Removes all levels from the stack.

You must call add_level() again to restore them.

Definition at line 90 of file stackedPerlinNoise2.cxx.

double StackedPerlinNoise2::noise ( double  x,
double  y 
) [inline]

Returns the noise function of the three inputs.

Definition at line 33 of file stackedPerlinNoise2.I.

Referenced by noise(), operator()(), PNMImage::perlin_noise_fill(), and StackedPerlinNoise2().

float StackedPerlinNoise2::noise ( const LVecBase2f value) [inline]

Returns the noise function of the three inputs.

Definition at line 43 of file stackedPerlinNoise2.I.

References noise().

double StackedPerlinNoise2::noise ( const LVecBase2d value)

Returns the noise function of the three inputs.

Definition at line 100 of file stackedPerlinNoise2.cxx.

double StackedPerlinNoise2::operator() ( double  x,
double  y 
) [inline]

Returns the noise function of the three inputs.

Definition at line 53 of file stackedPerlinNoise2.I.

References noise().

float StackedPerlinNoise2::operator() ( const LVecBase2f value) [inline]

Returns the noise function of the three inputs.

Definition at line 63 of file stackedPerlinNoise2.I.

References noise().

double StackedPerlinNoise2::operator() ( const LVecBase2d value) [inline]

Returns the noise function of the three inputs.

Definition at line 73 of file stackedPerlinNoise2.I.

References noise().

void StackedPerlinNoise2::operator= ( const StackedPerlinNoise2 copy)

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

Definition at line 65 of file stackedPerlinNoise2.cxx.


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