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22 lines
744 B
Rust
22 lines
744 B
Rust
use crate::*;
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use crate::Direction::*;
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/// A cardinal direction.
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#[derive(Copy, Clone, PartialEq, Debug)]
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#[cfg_attr(test, derive(Arbitrary))]
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pub enum Direction {
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North, South, East, West, Above, Below
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}
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impl Direction {
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pub fn split_fixed <N: Coordinate> (self, area: impl Area<N>, a: N) -> ([N;4],[N;4]) {
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let [x, y, w, h] = area.xywh();
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match self {
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North => ([x, y.plus(h).minus(a), w, a], [x, y, w, h.minus(a)]),
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South => ([x, y, w, a], [x, y.plus(a), w, h.minus(a)]),
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East => ([x, y, a, h], [x.plus(a), y, w.minus(a), h]),
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West => ([x.plus(w).minus(a), y, a, h], [x, y, w.minus(a), h]),
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Above | Below => (area.xywh(), area.xywh())
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}
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}
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}
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