37 lines
741 B
Rust
37 lines
741 B
Rust
use nannou::prelude::*;
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pub struct Halton {
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i: usize,
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base: f32,
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}
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impl Halton {
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pub fn new(base: f32) -> Self {
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Self { i: 0, base }
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}
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pub fn points(base1: f32, base2: f32) -> impl Iterator<Item = Vec2> {
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Self::new(base1)
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.zip(Self::new(base2))
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.map(crate::Tup2Extension::to_vec2)
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}
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}
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impl Iterator for Halton {
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type Item = f32;
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fn next(&mut self) -> Option<Self::Item> {
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let mut f = 1.0;
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let mut r = 0.0;
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let mut index = self.i as f32;
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while index > 0.0 {
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f /= self.base;
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r += f * (index % self.base);
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index = (index / self.base).floor();
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}
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self.i += 1;
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Some(r)
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}
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}
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