use_rectangle/
lib.rs

1#![forbid(unsafe_code)]
2#![doc = include_str!("../README.md")]
3
4use use_bounds::Aabb2;
5use use_point::Point2;
6
7/// An axis-aligned rectangle.
8#[derive(Debug, Clone, Copy, PartialEq)]
9pub struct Rectangle {
10    bounds: Aabb2,
11}
12
13impl Rectangle {
14    /// Creates a rectangle from any two corners.
15    #[must_use]
16    pub const fn from_corners(a: Point2, b: Point2) -> Self {
17        Self {
18            bounds: Aabb2::from_points(a, b),
19        }
20    }
21
22    /// Creates a rectangle from bounds.
23    #[must_use]
24    pub const fn from_bounds(bounds: Aabb2) -> Self {
25        Self { bounds }
26    }
27
28    /// Returns the underlying bounds.
29    #[must_use]
30    pub const fn bounds(self) -> Aabb2 {
31        self.bounds
32    }
33
34    /// Returns the rectangle width.
35    #[must_use]
36    pub fn width(self) -> f64 {
37        self.bounds.width()
38    }
39
40    /// Returns the rectangle height.
41    #[must_use]
42    pub fn height(self) -> f64 {
43        self.bounds.height()
44    }
45
46    /// Returns the rectangle area.
47    #[must_use]
48    pub fn area(self) -> f64 {
49        self.bounds.area()
50    }
51
52    /// Returns the rectangle center.
53    #[must_use]
54    pub const fn center(self) -> Point2 {
55        self.bounds.center()
56    }
57}
58
59#[cfg(test)]
60mod tests {
61    use super::Rectangle;
62    use use_point::Point2;
63
64    #[test]
65    fn computes_rectangle_measurements() {
66        let rectangle = Rectangle::from_corners(Point2::new(0.0, 0.0), Point2::new(4.0, 2.0));
67
68        assert_eq!(rectangle.width(), 4.0);
69        assert_eq!(rectangle.height(), 2.0);
70        assert_eq!(rectangle.area(), 8.0);
71        assert_eq!(rectangle.center(), Point2::new(2.0, 1.0));
72    }
73}
use_rectangle/lib.rs

use_rectangle/
lib.rs
