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use crate::{
geometry::Point,
primitives::{
common::{DistanceIterator, PlaneSector},
sector::Sector,
},
};
#[derive(Clone, PartialEq, Debug)]
pub struct Points {
iter: DistanceIterator,
plane_sector: PlaneSector,
threshold: u32,
}
impl Points {
pub(in crate::primitives) fn new(sector: &Sector) -> Self {
let circle = sector.to_circle();
let plane_sector = PlaneSector::new(sector.angle_start, sector.angle_sweep);
Self {
iter: circle.distances(),
plane_sector,
threshold: circle.threshold(),
}
}
}
impl Iterator for Points {
type Item = Point;
fn next(&mut self) -> Option<Self::Item> {
let threshold = self.threshold;
let plane_sector = self.plane_sector;
self.iter
.find(|(_, delta, distance)| *distance < threshold && plane_sector.contains(*delta))
.map(|(point, ..)| point)
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{
geometry::AngleUnit,
pixelcolor::BinaryColor,
primitives::{PointsIter, Primitive, PrimitiveStyle},
Pixel,
};
#[test]
fn points_equals_filled() {
let sector = Sector::with_center(Point::new(10, 10), 5, 0.0.deg(), 90.0.deg());
let styled_points = sector
.clone()
.into_styled(PrimitiveStyle::with_fill(BinaryColor::On))
.pixels()
.map(|Pixel(p, _)| p);
assert!(sector.points().eq(styled_points));
}
}