1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78

use crate::Shape;

/// A 2-dimensional shape
#[derive(Clone, Debug)]
#[repr(C)]
pub enum Shape2d {
    /// A circle
    Circle(Circle),

    /// A difference between two shapes
    Difference(Box<Difference>),

    /// A square
    Square(Square),
}

/// A circle
#[derive(Clone, Debug)]
#[repr(C)]
pub struct Circle {
    /// The radius of the circle
    pub radius: f64,
}

impl From<Circle> for Shape {
    fn from(shape: Circle) -> Self {
        Self::Shape2d(Shape2d::Circle(shape))
    }
}

impl From<Circle> for Shape2d {
    fn from(shape: Circle) -> Self {
        Self::Circle(shape)
    }
}

/// A difference between two shapes
#[derive(Clone, Debug)]
#[repr(C)]
pub struct Difference {
    /// The original shape
    pub a: Shape2d,

    /// The shape being subtracted
    pub b: Shape2d,
}

impl From<Difference> for Shape {
    fn from(shape: Difference) -> Self {
        Self::Shape2d(Shape2d::Difference(Box::new(shape)))
    }
}

impl From<Difference> for Shape2d {
    fn from(shape: Difference) -> Self {
        Self::Difference(Box::new(shape))
    }
}

/// A square
#[derive(Clone, Debug)]
#[repr(C)]
pub struct Square {
    /// The side length of the square
    pub size: f64,
}

impl From<Square> for Shape {
    fn from(shape: Square) -> Self {
        Self::Shape2d(Shape2d::Square(shape))
    }
}

impl From<Square> for Shape2d {
    fn from(shape: Square) -> Self {
        Self::Square(shape)
    }
}