Struct noise::Billow
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pub struct Billow {
pub octaves: usize,
pub frequency: f64,
pub lacunarity: f64,
pub persistence: f64,
// some fields omitted
}Noise function that outputs "billowy" noise.
This noise function produces "billowy" noise suitable for clouds and rocks.
This noise function is nearly identical to fBm noise, except this noise function modifies each octave with an absolute-value function. See the documentation for fBm for more information.
Fields
octaves: usize
Total number of frequency octaves to generate the noise with.
The number of octaves control the amount of detail in the noise function. Adding more octaves increases the detail, with the drawback of increasing the calculation time.
frequency: f64
The number of cycles per unit length that the noise function outputs.
lacunarity: f64
A multiplier that determines how quickly the frequency increases for each successive octave in the noise function.
The frequency of each successive octave is equal to the product of the previous octave's frequency and the lacunarity value.
A lacunarity of 2.0 results in the frequency doubling every octave. For almost all cases, 2.0 is a good value to use.
persistence: f64
A multiplier that determines how quickly the amplitudes diminish for each successive octave in the noise function.
The amplitude of each successive octave is equal to the product of the previous octave's amplitude and the persistence value. Increasing the persistence produces "rougher" noise.
Methods
impl Billow[src]
pub const DEFAULT_SEED: u32
DEFAULT_SEED: u32 = 0
pub const DEFAULT_OCTAVE_COUNT: usize
DEFAULT_OCTAVE_COUNT: usize = 6
pub const DEFAULT_FREQUENCY: f64
DEFAULT_FREQUENCY: f64 = 1.0
pub const DEFAULT_LACUNARITY: f64
DEFAULT_LACUNARITY: f64 = std::f64::consts::PI * 2.0 / 3.0
pub const DEFAULT_PERSISTENCE: f64
DEFAULT_PERSISTENCE: f64 = 0.5
pub const MAX_OCTAVES: usize
MAX_OCTAVES: usize = 32
pub fn new() -> Self[src]
Trait Implementations
impl Clone for Billow[src]
fn clone(&self) -> Billow[src]
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)1.0.0[src]
Performs copy-assignment from source. Read more
impl Debug for Billow[src]
fn fmt(&self, __arg_0: &mut Formatter) -> Result[src]
Formats the value using the given formatter. Read more
impl Default for Billow[src]
impl MultiFractal for Billow[src]
fn set_octaves(self, octaves: usize) -> Self[src]
fn set_frequency(self, frequency: f64) -> Self[src]
fn set_lacunarity(self, lacunarity: f64) -> Self[src]
fn set_persistence(self, persistence: f64) -> Self[src]
impl Seedable for Billow[src]
fn set_seed(self, seed: u32) -> Self[src]
Set the seed for the function implementing the Seedable trait
fn seed(&self) -> u32[src]
Getter to retrieve the seed from the function
impl NoiseFn<Point2<f64>> for Billow[src]
2-dimensional Billow noise
impl NoiseFn<Point3<f64>> for Billow[src]
3-dimensional Billow noise
impl NoiseFn<Point4<f64>> for Billow[src]
4-dimensional Billow noise