Struct SimplexNoise 

pub struct SimplexNoise {
    p: [i32; 512],
    pub xo: f64,
    pub yo: f64,
    pub zo: f64,
}

Simplex noise generator matching vanilla’s SimplexNoise.java.

Unlike ImprovedNoise which uses 256-byte permutation tables, this uses a 512-entry i32 permutation table (first 256 entries shuffled, mirrored to second half).

Fields

p: [i32; 512]

xo: f64

X offset for the noise coordinates.

yo: f64

Y offset for the noise coordinates.

zo: f64

Z offset for the noise coordinates.

Implementations

impl SimplexNoise

const F3: f64

Skewing factor for 3D simplex: 1/3

const G3: f64

Unskewing factor for 3D simplex: 1/6

pub fn new<R: Random>(random: &mut R) -> Self

Create a new simplex noise generator from a random source.

Matches vanilla’s SimplexNoise(RandomSource) constructor: consumes 3 doubles for offsets, then shuffles a 256-entry permutation table.

pub fn new_without_noise_offset<R: Random>(random: &mut R) -> Self

Creates a simplex sampler whose random offsets are discarded.

Vanilla still consumes the three offset samples when the scale is zero.

fn with_noise_offset_scale<R: Random>( random: &mut R, noise_offset_scale: f64, ) -> Self

const fn p(&self, x: i32) -> i32

pub fn get_value_2d(&self, xin: f64, yin: f64) -> f32

Sample 2D simplex noise at the given coordinates.

Returns a value typically in the range [-1, 1] (scaled by 70).

pub fn get_value_3d(&self, xin: f64, yin: f64, zin: f64) -> f32

Sample 3D simplex noise at the given coordinates.

Returns a value typically in the range [-1, 1] (scaled by 32).

Trait Implementations

impl Clone for SimplexNoise

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SimplexNoise

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.