rust_rectangle_dividing/
wasm_binding.rs

1use crate::axis_aligned_rectangle::AxisAlignedRectangle;
2use crate::component::Component;
3use crate::dividing::Dividing;
4use crate::point::Point;
5use crate::rectangle::{Rectangle, RectangleSize};
6use serde::{Deserialize, Serialize};
7use serde_wasm_bindgen;
8use wasm_bindgen::prelude::*;
9
10#[derive(Serialize, Deserialize, Debug, Clone, Copy, PartialEq)]
11pub struct JSRect {
12    pub x: f32,
13    pub y: f32,
14    pub w: f32,
15    pub h: f32,
16}
17
18#[wasm_bindgen]
19pub fn dividing(
20    rect: JsValue,
21    weights: &[f32],
22    aspect_ratio: f32,
23    vertical_first: bool,
24    boustrophedron: bool,
25) -> Result<JsValue, JsValue> {
26    let Ok(rect) = serde_wasm_bindgen::from_value::<JSRect>(rect) else {
27        return Err(JsValue::from_str("failed to parse rect"));
28    };
29    let rect =
30        AxisAlignedRectangle::new(&Point::new(rect.x, rect.y), &Rectangle::new(rect.w, rect.h));
31    let rects = match vertical_first {
32        true => {
33            rect.divide_vertical_then_horizontal_with_weights(weights, aspect_ratio, boustrophedron)
34        }
35        false => {
36            rect.divide_horizontal_then_vertical_with_weights(weights, aspect_ratio, boustrophedron)
37        }
38    };
39
40    let js_rects = rects
41        .iter()
42        .map(|rect| JSRect {
43            x: rect.x(),
44            y: rect.y(),
45            w: rect.width(),
46            h: rect.height(),
47        })
48        .collect::<Vec<_>>();
49
50    serde_wasm_bindgen::to_value(&js_rects).map_err(|e| e.into())
51}
52
53#[cfg(test)]
54mod tests {
55    use wasm_bindgen_test::wasm_bindgen_test;
56
57    use super::*;
58
59    #[wasm_bindgen_test]
60    fn test_basis() {
61        let result = dividing(
62            serde_wasm_bindgen::to_value(&JSRect {
63                x: 0.0,
64                y: 0.0,
65                w: 100.0,
66                h: 100.0,
67            })
68            .unwrap(),
69            &[1.0, 1.0],
70            1.0,
71            true,
72            false,
73        )
74        .unwrap();
75        let result: Vec<JSRect> = serde_wasm_bindgen::from_value(result).unwrap();
76        assert_eq!(
77            result,
78            vec![
79                JSRect {
80                    x: 0.0,
81                    y: 0.0,
82                    w: 100.0,
83                    h: 50.0
84                },
85                JSRect {
86                    x: 0.0,
87                    y: 50.0,
88                    w: 100.0,
89                    h: 50.0
90                }
91            ]
92        );
93    }
94}
rust_rectangle_dividing/wasm_binding.rs

rust_rectangle_dividing/
wasm_binding.rs
