noise_functions/modifiers/
clamp.rs

1#[cfg(feature = "nightly-simd")]
2use core::simd::{LaneCount, Simd, SupportedLaneCount};
3
4use crate::{Noise, Sample};
5
6/// Returns `max` if `value` is greater than `max` and `min` if `value` is less than `min`.
7/// Otherwise this will return `value`.
8///
9/// Unlike [`f32::clamp`], this modifier won't panic if `!(min <= max)`.
10#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
11pub struct Clamp<Value, Min, Max> {
12    pub value: Value,
13    pub min: Min,
14    pub max: Max,
15}
16
17impl<Value, Min, Max> Noise for Clamp<Value, Min, Max> {}
18
19impl<const DIM: usize, Value, Min, Max> Sample<DIM> for Clamp<Value, Min, Max>
20where
21    Value: Sample<DIM>,
22    Min: Sample<DIM>,
23    Max: Sample<DIM>,
24{
25    #[inline]
26    fn sample_with_seed(&self, point: [f32; DIM], seed: i32) -> f32 {
27        clamp(self.value.sample_with_seed(point, seed), self.min.sample_with_seed(point, seed), self.max.sample_with_seed(point, seed))
28    }
29}
30
31#[cfg(feature = "nightly-simd")]
32impl<const DIM: usize, const LANES: usize, Value, Min, Max> Sample<DIM, Simd<f32, LANES>> for Clamp<Value, Min, Max>
33where
34    Value: Sample<DIM, Simd<f32, LANES>>,
35    Min: Sample<DIM, Simd<f32, LANES>>,
36    Max: Sample<DIM, Simd<f32, LANES>>,
37    LaneCount<LANES>: SupportedLaneCount,
38{
39    #[inline]
40    fn sample_with_seed(&self, point: Simd<f32, LANES>, seed: i32) -> f32 {
41        clamp(self.value.sample_with_seed(point, seed), self.min.sample_with_seed(point, seed), self.max.sample_with_seed(point, seed))
42    }
43}
44
45#[inline(always)]
46fn clamp(mut value: f32, min: f32, max: f32) -> f32 {
47    if value < min {
48        value = min;
49    }
50
51    if value > max {
52        value = max;
53    }
54
55    value
56}
noise_functions/modifiers/clamp.rs

noise_functions/modifiers/
clamp.rs
