libnoise 1.2.0

A simple, performant, and customizable procedural noise generation library.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46

use crate::core::generator::{Generator, Generator1D, Generator2D, Generator3D, Generator4D};

/// A generator producing the maximum of results of the underlying generator and results of
/// a given other generator.
///
/// For details, see the documentation of [`displace_x()`] and analogously for other axes.
/// Typically, this struct is not meant to be used directly. Instead, [`displace_x()`]
/// implemented by [`Generator`], should be used to create [`Displace`].
///
/// [`displace_x()`]: Generator2D::displace_x
#[derive(Clone, Copy, Debug)]
pub struct Displace<const D: usize, const A: usize, G, GA> {
    generator: G,
    displacement_generator: GA,
}

impl<const A: usize, G: Generator<1>, GA: Generator<1>> Generator1D for Displace<1, A, G, GA> {}
impl<const A: usize, G: Generator<2>, GA: Generator<2>> Generator2D for Displace<2, A, G, GA> {}
impl<const A: usize, G: Generator<3>, GA: Generator<3>> Generator3D for Displace<3, A, G, GA> {}
impl<const A: usize, G: Generator<4>, GA: Generator<4>> Generator4D for Displace<4, A, G, GA> {}

impl<const D: usize, const A: usize, G, GA> Displace<D, A, G, GA>
where
    G: Generator<D>,
    GA: Generator<D>,
{
    #[inline]
    pub fn new(generator: G, displacement_generator: GA) -> Self {
        Self {
            generator,
            displacement_generator,
        }
    }
}

impl<const D: usize, const A: usize, G, GA> Generator<D> for Displace<D, A, G, GA>
where
    G: Generator<D>,
    GA: Generator<D>,
{
    #[inline]
    fn sample(&self, mut point: [f64; D]) -> f64 {
        point[A] += self.displacement_generator.sample(point);
        self.generator.sample(point)
    }
}