rectangle_pack/bin_section/
overlaps.rs

1use crate::bin_section::BinSection;
2
3impl BinSection {
4    /// Whether or not two bin sections overlap each other.
5    pub fn overlaps(&self, other: &Self) -> bool {
6        (self.x >= other.x && self.x <= other.right())
7            && (self.y >= other.y && self.y <= other.top())
8            && (self.z >= other.z && self.z <= other.back())
9    }
10
11    fn right(&self) -> u32 {
12        self.x + (self.whd.width - 1)
13    }
14
15    fn top(&self) -> u32 {
16        self.y + (self.whd.height - 1)
17    }
18
19    fn back(&self) -> u32 {
20        self.z + (self.whd.depth - 1)
21    }
22}
23
24#[cfg(test)]
25mod tests {
26    use super::*;
27    use crate::width_height_depth::WidthHeightDepth;
28
29    /// Verify that the overlaps method works properly.
30    #[test]
31    fn overlaps() {
32        OverlapsTest {
33            label: "Overlaps X, Y and Z",
34            section1: BinSection::new(3, 4, 5, WidthHeightDepth::new(1, 1, 1)),
35            section2: section_2_3_4(),
36            expected_overlap: true,
37        }
38        .test();
39
40        OverlapsTest {
41            label: "Overlaps X only",
42            section1: BinSection::new(3, 40, 50, WidthHeightDepth::new(1, 1, 1)),
43            section2: section_2_3_4(),
44            expected_overlap: false,
45        }
46        .test();
47
48        OverlapsTest {
49            label: "Overlaps Y only",
50            section1: BinSection::new(30, 4, 50, WidthHeightDepth::new(1, 1, 1)),
51            section2: section_2_3_4(),
52            expected_overlap: false,
53        }
54        .test();
55
56        OverlapsTest {
57            label: "Overlaps Z only",
58            section1: BinSection::new(30, 40, 5, WidthHeightDepth::new(1, 1, 1)),
59            section2: section_2_3_4(),
60            expected_overlap: false,
61        }
62        .test();
63    }
64
65    fn section_2_3_4() -> BinSection {
66        BinSection::new(2, 3, 4, WidthHeightDepth::new(2, 3, 4))
67    }
68
69    struct OverlapsTest {
70        label: &'static str,
71        section1: BinSection,
72        section2: BinSection,
73        expected_overlap: bool,
74    }
75
76    impl OverlapsTest {
77        fn test(self) {
78            assert_eq!(
79                self.section1.overlaps(&self.section2),
80                self.expected_overlap,
81                "{}",
82                self.label
83            )
84        }
85    }
86}
rectangle_pack/bin_section/overlaps.rs

rectangle_pack/bin_section/
overlaps.rs
