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use super::{Noise, NoiseDomain, Seedable, noise::Seeded};
use core::ops::Mul;
#[derive(Copy, Clone)]
pub struct ScaleNoise<Inner, InScale: Copy, OutScale: Copy> {
inner: Inner,
scale_in: InScale,
scale_out: OutScale,
}
impl<Inner: Noise, InScale: Copy, OutScale: Copy> Noise for ScaleNoise<Inner, InScale, OutScale> where Inner::Value: Mul<OutScale> {
type Value = <Inner::Value as Mul<OutScale>>::Output;
type Unseeded = ScaleNoise<Inner::Unseeded, InScale, OutScale>;
}
impl<Inner, InScale: Copy, OutScale: Copy> ScaleNoise<Inner, InScale, OutScale> {
pub fn new(inner: Inner, scale_in: InScale, scale_out: OutScale) -> ScaleNoise<Inner, InScale, OutScale> {
ScaleNoise { inner, scale_in, scale_out }
}
}
impl<Inner: Seedable, InScale: Copy, OutScale: Copy> Seedable for ScaleNoise<Inner, InScale, OutScale> {
type Seed = Inner::Seed;
type Seeded = ScaleNoise<Inner::Seeded, InScale, OutScale>;
fn seed(self, seed: Self::Seed) -> Self::Seeded {
ScaleNoise { inner: self.inner.seed(seed), scale_in: self.scale_in, scale_out: self.scale_out }
}
}
impl<Inner: Seeded, InScale: Copy, OutScale: Copy> Seeded for ScaleNoise<Inner, InScale, OutScale> {
type Config = ScaleNoise<Inner::Config, InScale, OutScale>;
}
impl<Arg, Inner, InScale: Copy, OutScale: Copy> NoiseDomain<Arg> for ScaleNoise<Inner, InScale, OutScale> where
Arg: Mul<InScale>,
Inner: NoiseDomain<Arg::Output>,
Inner::Value: Mul<OutScale>,
{
fn noise(&self, arg: Arg) -> Self::Value {
self.inner.noise(arg * self.scale_in) * self.scale_out
}
}