histausse/webasm-circle-table
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define the struct Point

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histausse 2022-01-16 10:05:34 +01:00
parent cc6a0c4bce
commit 45ad11a0db
Signed by: histausse
GPG key ID: 67486F107F62E9E9
2 changed files with 17 additions and 10 deletions
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20
src/drawing.rs
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@ -1,9 +1,15 @@
use std::f64; use std::f64;
pub fn draw_circle(center: (f64, f64), radius: f64, context: &web_sys::CanvasRenderingContext2d) { pub struct Point(pub f64, pub f64);
let (x, y) = center;
context.move_to(x+radius, y); pub fn draw_circle(center: Point, radius: f64, context: &web_sys::CanvasRenderingContext2d) {
context context.move_to(center.0+radius, center.1);
.arc(x, y, radius, 0.0, f64::consts::PI * 2.0) context
.unwrap(); .arc(center.0, center.1, radius, 0.0, f64::consts::PI * 2.0)
} .unwrap();
}
/*
pub fn draw_line(p1: Point, p2: Point, context: &web_sys::CanvasRenderingContext2d) {
}
*/

7
src/lib.rs
View file

@ -1,6 +1,7 @@
use wasm_bindgen::prelude::*; use wasm_bindgen::prelude::*;
use wasm_bindgen::JsCast; use wasm_bindgen::JsCast;
pub mod drawing; pub mod drawing;
use drawing::Point;
#[wasm_bindgen(start)] #[wasm_bindgen(start)]
pub fn start() { pub fn start() {
@ -20,9 +21,9 @@ pub fn start() {
context.begin_path(); context.begin_path();
drawing::draw_circle((75.0, 75.0), 70.0, &context); drawing::draw_circle(Point(75.0, 75.0), 70.0, &context);
drawing::draw_circle((75.0, 75.0), 35.0, &context); drawing::draw_circle(Point(75.0, 75.0), 35.0, &context);
drawing::draw_circle((60.0, 65.0), 5.0, &context); drawing::draw_circle(Point(60.0, 65.0), 5.0, &context);
context.stroke(); context.stroke();
} }