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use std::fmt;
use crate::bitmap::{mirror_figure, reflect_figure, Axis, MapPoint};
#[derive(Debug, Default, Copy, Clone)]
pub struct Symmetry {
pub x: Option<u32>,
pub y: Option<u32>,
}
impl Symmetry {
pub fn apply(self, figure: &[MapPoint]) -> Vec<MapPoint> {
let Symmetry { x, y } = self;
match (x, y) {
(None, None) => vec![],
(Some(line), None) => mirror_figure(figure, line, Axis::X),
(None, Some(line)) => mirror_figure(figure, line, Axis::Y),
(Some(x), Some(y)) => {
let along_x = mirror_figure(figure, x, Axis::X);
let along_y = mirror_figure(figure, y, Axis::Y);
let reflected = reflect_figure(figure, (y, x).into());
along_x
.into_iter()
.chain(along_y)
.chain(reflected)
.collect()
}
}
}
}
impl fmt::Display for Symmetry {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let Symmetry { x, y } = self;
match (x, y) {
(None, None) => write!(f, "OFF"),
(Some(_), None) => write!(f, "HOR"),
(None, Some(_)) => write!(f, "VER"),
(Some(_), Some(_)) => write!(f, "RAD"),
}
}
}
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