1extern crate polygon2;
2
3use polygon2::*;
4
5fn main() {
6 let points = [[0.5, -0.5], [0.5, 0.5], [-0.5, 0.5], [-0.5, -0.5]];
7
8 assert_eq!(triangulate(&points), [0, 1, 2, 0, 2, 3]);
9 assert_eq!(area(&points), 1.0);
10 assert_eq!(is_simple(&points), true);
11 assert_eq!(is_convex(&points), true);
12
13 assert_eq!(contains_point(&points, &[0.0, 0.0]), true);
14 assert_eq!(contains_point(&points, &[1.0, 1.0]), false);
15
16 assert_eq!(closest_edge(&points, &[1.0, 0.0]).edge, 0);
17 assert_eq!(closest_edge(&points, &[0.0, 1.0]).edge, 1);
18 assert_eq!(closest_edge(&points, &[-1.0, 0.0]).edge, 2);
19 assert_eq!(closest_edge(&points, &[0.0, -1.0]).edge, 3);
20
21 let subject = [[1.0, 0.0], [1.0, 1.0], [0.0, 1.0], [0.0, 0.0]];
22 let clip = [[0.5, -0.5], [0.5, 0.5], [-0.5, 0.5], [-0.5, -0.5]];
23
24 let difference_polygons = difference(&subject, &clip);
25 let intersection_polygons = intersection(&subject, &clip);
26 let union_polygons = union(&subject, &clip);
27
28 assert_eq!(area(&difference_polygons[0]), 0.75);
29 assert_eq!(area(&intersection_polygons[0]), 0.25);
30 assert_eq!(area(&union_polygons[0]), 1.75);
31}