[−][src]Struct nannou::noise::RidgedMulti
Noise function that outputs ridged-multifractal noise.
This noise function, heavily based on the fBm-noise function, generates ridged-multifractal noise. Ridged-multifractal noise is generated in much the same way as fBm noise, except the output of each octave is modified by an absolute-value function. Modifying the octave values in this way produces ridge-like formations.
The values output from this function will usually range from -1.0 to 1.0 with default values for the parameters, but there are no guarantees that all output values will exist within this range. If the parameters are modified from their defaults, then the output will need to be scaled to remain in the [-1,1] range.
Ridged-multifractal noise is often used to generate craggy mountainous terrain or marble-like textures.
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.
attenuation: f64
The attenuation to apply to the weight on each octave. This reduces the strength of each successive octave, making their respective ridges smaller. The default attenuation is 2.0, making each octave half the height of the previous.
Methods
impl RidgedMulti
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pub const DEFAULT_SEED: u32
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pub const DEFAULT_OCTAVE_COUNT: usize
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pub const DEFAULT_FREQUENCY: f64
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pub const DEFAULT_LACUNARITY: f64
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pub const DEFAULT_PERSISTENCE: f64
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pub const DEFAULT_ATTENUATION: f64
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pub const MAX_OCTAVES: usize
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pub fn new() -> RidgedMulti
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pub fn set_attenuation(self, attenuation: f64) -> RidgedMulti
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Trait Implementations
impl Clone for RidgedMulti
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fn clone(&self) -> RidgedMulti
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fn clone_from(&mut self, source: &Self)
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impl Debug for RidgedMulti
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impl Default for RidgedMulti
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fn default() -> RidgedMulti
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impl MultiFractal for RidgedMulti
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fn set_octaves(self, octaves: usize) -> RidgedMulti
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fn set_frequency(self, frequency: f64) -> RidgedMulti
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fn set_lacunarity(self, lacunarity: f64) -> RidgedMulti
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fn set_persistence(self, persistence: f64) -> RidgedMulti
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impl NoiseFn<[f64; 2]> for RidgedMulti
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2-dimensional RidgedMulti
noise
impl NoiseFn<[f64; 3]> for RidgedMulti
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3-dimensional RidgedMulti
noise
impl NoiseFn<[f64; 4]> for RidgedMulti
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4-dimensional RidgedMulti
noise
impl Seedable for RidgedMulti
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Auto Trait Implementations
impl RefUnwindSafe for RidgedMulti
impl Send for RidgedMulti
impl Sync for RidgedMulti
impl Unpin for RidgedMulti
impl UnwindSafe for RidgedMulti
Blanket Implementations
impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S where
D: AdaptFrom<S, Swp, Dwp, T>,
Dwp: WhitePoint,
Swp: WhitePoint,
T: Component + Float,
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D: AdaptFrom<S, Swp, Dwp, T>,
Dwp: WhitePoint,
Swp: WhitePoint,
T: Component + Float,
fn adapt_into_using<M>(self, method: M) -> D where
M: TransformMatrix<Swp, Dwp, T>,
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M: TransformMatrix<Swp, Dwp, T>,
fn adapt_into(self) -> D
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> ConvertInto<U> for T where
U: ConvertFrom<T>,
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U: ConvertFrom<T>,
fn convert_into(self) -> U
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fn convert_unclamped_into(self) -> U
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fn try_convert_into(self) -> Result<U, OutOfBounds<U>>
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> SetParameter for T
fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Result where
T: Parameter<Self>,
T: Parameter<Self>,
impl<T> SetParameter for T
fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Result where
T: Parameter<Self>,
T: Parameter<Self>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,