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: Circle = sector.to_circle();
23
24 let plane_sector: PlaneSector = 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: u32 = self.threshold;
40 let plane_sector: PlaneSector = self.plane_sector;
41
42 self.iter
43 .find(|(_, delta: &Point, distance: &u32)| *distance < threshold && plane_sector.contains(*delta))
44 .map(|(point: 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}
71