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This is the base class for PerlinNoise2 and PerlinNoise3, different dimensions of Perlin noise implementation. More...
#include "perlinNoise.h"
Public Member Functions | |
unsigned long | get_seed () |
Returns a unique seed value based on the seed value passed to this PerlinNoise object (and on its current state). | |
Protected Types | |
typedef vector_int | Index |
Protected Member Functions | |
PerlinNoise (int table_size, unsigned long seed) | |
Randomizes the tables to make a unique noise function. | |
PerlinNoise (const PerlinNoise ©) | |
Makes an exact copy of the existing PerlinNoise object, including its random seed. | |
void | operator= (const PerlinNoise ©) |
Makes an exact copy of the existing PerlinNoise object, including its random seed. | |
Static Protected Member Functions | |
static double | fade (double t) |
Returns a smooth interpolation spline from 0 . | |
static double | lerp (double t, double a, double b) |
Returns the smoothly lerped value from a to b. | |
Protected Attributes | |
Index | _index |
Randomizer | _randomizer |
int | _table_size |
int | _table_size_mask |
This is the base class for PerlinNoise2 and PerlinNoise3, different dimensions of Perlin noise implementation.
The base class just collects the common functionality.
Definition at line 31 of file perlinNoise.h.
PerlinNoise::PerlinNoise | ( | int | table_size, |
unsigned long | seed | ||
) | [protected] |
Randomizes the tables to make a unique noise function.
If seed is nonzero, it is used to define the tables; if it is zero a random seed is generated.
Definition at line 27 of file perlinNoise.cxx.
References Randomizer::random_int().
PerlinNoise::PerlinNoise | ( | const PerlinNoise & | copy | ) | [protected] |
Makes an exact copy of the existing PerlinNoise object, including its random seed.
Definition at line 72 of file perlinNoise.cxx.
double PerlinNoise::fade | ( | double | t | ) | [inline, static, protected] |
Returns a smooth interpolation spline from 0 .
. 1 for t.
Definition at line 23 of file perlinNoise.I.
Referenced by PerlinNoise2::noise(), and PerlinNoise3::noise().
unsigned long PerlinNoise::get_seed | ( | ) | [inline] |
Returns a unique seed value based on the seed value passed to this PerlinNoise object (and on its current state).
Definition at line 46 of file perlinNoise.I.
References Randomizer::get_seed().
Referenced by StackedPerlinNoise2::StackedPerlinNoise2(), and StackedPerlinNoise3::StackedPerlinNoise3().
double PerlinNoise::lerp | ( | double | t, |
double | a, | ||
double | b | ||
) | [inline, static, protected] |
Returns the smoothly lerped value from a to b.
Definition at line 34 of file perlinNoise.I.
Referenced by PerlinNoise2::noise(), and PerlinNoise3::noise().
void PerlinNoise::operator= | ( | const PerlinNoise & | copy | ) | [protected] |
Makes an exact copy of the existing PerlinNoise object, including its random seed.
Definition at line 87 of file perlinNoise.cxx.