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use crate::private_prelude::*;

#[derive(Debug, Clone, Copy)]
pub struct Frequency<Noise> {
    pub base: Noise,
    pub frequency: f32,
}

impl<const DIM: usize, Noise> Sample<DIM, [f32; DIM]> for Frequency<Noise>
where
    Noise: Sample<DIM, [f32; DIM]>,
{
    fn sample(&self, mut pos: [f32; DIM]) -> f32 {
        let frequency = self.frequency;

        for x in &mut pos {
            *x *= frequency;
        }

        self.base.sample(pos)
    }
}

#[cfg(feature = "nightly-simd")]
impl<const DIM: usize, const LANES: usize, Noise> Sample<DIM, Simd<f32, LANES>> for Frequency<Noise>
where
    Noise: Sample<DIM, Simd<f32, LANES>>,
    LaneCount<LANES>: SupportedLaneCount,
{
    fn sample(&self, mut pos: Simd<f32, LANES>) -> f32 {
        pos *= splat(self.frequency);
        self.base.sample(pos)
    }
}