dists 0.4.2

2d distribution generator
Documentation 
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use axgeom::*;

#[derive(Clone)]
pub struct Spiral {
    point: [f32; 2],
    rad: f32,
    start: f32,
    rate: f32,
    width: f32,
}

pub struct SpiralInt(Spiral);
impl Iterator for SpiralInt {
    type Item = Vec2<i32>;
    fn next(&mut self) -> Option<Vec2<i32>> {
        self.0.next().map(|a| a.inner_as())
    }
}
impl std::iter::FusedIterator for SpiralInt {}

pub struct SpiralF64(Spiral);
impl Iterator for SpiralF64 {
    type Item = Vec2<f64>;
    fn next(&mut self) -> Option<Vec2<f64>> {
        self.0.next().map(|a| vec2(a.x as f64, a.y as f64))
    }
}
impl std::iter::FusedIterator for SpiralF64 {}

impl Spiral {
    #[deprecated(since = "0.3.1", note = "use spiral_iter() instead")]
    pub fn new(point: [f32; 2], circular_grow: f32, outward_grow: f32) -> Spiral {
        Spiral {
            point,
            rad: 0.0,
            start: 1.0,
            rate: outward_grow,
            width: circular_grow,
        }
    }
    pub fn get_circular_grow(&self) -> f32 {
        self.width
    }
    pub fn get_outward_grow(&self) -> f32 {
        self.rate
    }
    pub fn as_isize(self) -> SpiralInt {
        SpiralInt(self)
    }
    pub fn as_f64(self) -> SpiralF64 {
        SpiralF64(self)
    }
}

impl std::iter::FusedIterator for Spiral {}

impl Iterator for Spiral {
    type Item = Vec2<f32>;
    fn next(&mut self) -> Option<Vec2<f32>> {
        let length = self.start + self.rate * self.rad;

        let x = self.point[0] + self.rad.cos() * length;
        let y = self.point[1] + self.rad.sin() * length;

        self.rad += self.width / length;

        Some(vec2(x, y))
    }
}