embedded_graphics/primitives/sector/
points.rs

1use crate::{
2    geometry::Point,
3    primitives::{
4        common::{DistanceIterator, PlaneSector},
5        sector::Sector,
6    },
7};
8
9/// Iterator over all points inside the sector.
10#[derive(Clone, PartialEq, Debug)]
11#[cfg_attr(feature = "defmt", derive(::defmt::Format))]
12pub struct Points {
13    iter: DistanceIterator,
14
15    plane_sector: PlaneSector,
16
17    threshold: u32,
18}
19
20impl Points {
21    pub(in crate::primitives) fn new(sector: &Sector) -> Self {
22        let circle = sector.to_circle();
23
24        let plane_sector = PlaneSector::new(sector.angle_start, sector.angle_sweep);
25
26        Self {
27            // PERF: The distance iterator should use the smaller sector bounding box
28            iter: circle.distances(),
29            plane_sector,
30            threshold: circle.threshold(),
31        }
32    }
33}
34
35impl Iterator for Points {
36    type Item = Point;
37
38    fn next(&mut self) -> Option<Self::Item> {
39        let threshold = self.threshold;
40        let plane_sector = self.plane_sector;
41
42        self.iter
43            .find(|(_, delta, distance)| *distance < threshold && plane_sector.contains(*delta))
44            .map(|(point, ..)| point)
45    }
46}
47
48#[cfg(test)]
49mod tests {
50    use super::*;
51    use crate::{
52        geometry::AngleUnit,
53        pixelcolor::BinaryColor,
54        primitives::{PointsIter, Primitive, PrimitiveStyle},
55        Pixel,
56    };
57
58    #[test]
59    fn points_equals_filled() {
60        let sector = Sector::with_center(Point::new(10, 10), 5, 0.0.deg(), 90.0.deg());
61
62        let styled_points = sector
63            .clone()
64            .into_styled(PrimitiveStyle::with_fill(BinaryColor::On))
65            .pixels()
66            .map(|Pixel(p, _)| p);
67
68        assert!(sector.points().eq(styled_points));
69    }
70}
embedded_graphics/primitives/sector/points.rs

embedded_graphics/primitives/sector/
points.rs
