cheap_ruler/
rect.rs

1use geo_types::{CoordNum, Coordinate};
2use std::borrow::Borrow;
3
4#[derive(Eq, PartialEq, Clone, Copy, Debug, Hash)]
5pub struct Rect<T: CoordNum> {
6    min: Coordinate<T>,
7    max: Coordinate<T>,
8}
9
10impl<T: CoordNum> Rect<T> {
11    pub fn new<C>(c1: C, c2: C) -> Self
12    where
13        C: Into<Coordinate<T>>,
14    {
15        let min = c1.into();
16        let max = c2.into();
17        Self { min, max }
18    }
19
20    pub fn min(self) -> Coordinate<T> {
21        self.min
22    }
23
24    pub fn max(self) -> Coordinate<T> {
25        self.max
26    }
27}
28
29impl<C, G> From<G> for Rect<C>
30where
31    C: CoordNum,
32    G: Borrow<geo_types::Rect<C>>,
33{
34    fn from(geo_rect: G) -> Self {
35        let geo_rect = geo_rect.borrow();
36        Rect::new(geo_rect.min(), geo_rect.max())
37    }
38}
39
40#[cfg(test)]
41mod test {
42    use super::*;
43
44    #[test]
45    fn test_rect_from_geo_types_rect() {
46        let (min_x, max_x) = (30.0, 40.0);
47        let (min_y, max_y) = (38.0, 39.0);
48
49        // regular bounding box
50        let bbox_regular = geo_types::Rect::new(
51            Coordinate { x: min_x, y: min_y },
52            Coordinate { x: max_x, y: max_y },
53        );
54
55        let bbox_rect_regular: Rect<f64> = bbox_regular.into();
56
57        assert_eq!(bbox_rect_regular.min().x, min_x);
58        assert_eq!(bbox_rect_regular.min().y, min_y);
59        assert_eq!(bbox_rect_regular.max().x, max_x);
60        assert_eq!(bbox_rect_regular.max().y, max_y);
61
62        // bounding box crossing the international date line
63        let (min_x, max_x) = (179.9, -179.9);
64        let (min_y, max_y) = (32.7, 32.9);
65
66        let bbox_date_line = geo_types::Rect::new(
67            Coordinate { x: min_x, y: min_y },
68            Coordinate { x: max_x, y: max_y },
69        );
70
71        let bbox_rect_date_line: Rect<f64> = bbox_date_line.into();
72
73        // Note that min and max X are swapped
74        assert_eq!(bbox_rect_date_line.min().x, max_x);
75        assert_eq!(bbox_rect_date_line.min().y, min_y);
76        assert_eq!(bbox_rect_date_line.max().x, min_x);
77        assert_eq!(bbox_rect_date_line.max().y, max_y);
78    }
79}
cheap_ruler/rect.rs

cheap_ruler/
rect.rs
