rtwx/nexrad-browser/www/index.js

import * as wasm from "./wasm/nexrad_browser.js";
await wasm.default();
let global_context = wasm.__nxrd_browser_init();
/*
function rescaleCanvas(canvas, ctx) {
    var dpr = window.devicePixelRatio || 1;
    // Get the size of the canvas in CSS pixels.
    var rect = canvas.getBoundingClientRect();
    // Give the canvas pixel dimensions of their CSS
    // size * the device pixel ratio.
    canvas.width = rect.width * dpr;
    canvas.height = rect.height * dpr;
    // Scale all drawing operations by the dpr, so you
    // don't have to worry about the difference.
    ctx.scale(dpr, dpr);
}
window.rescaleCanvas = rescaleCanvas;

window.loadar2 = (s) => {
    const file = document.getElementById("file").files[0];
    document.getElementById("file").value = null;
    const reader = new FileReader();
    reader.addEventListener('load', (event) => {
        let data = event.target.result;
        wasm.load_ar2(data, global_context);
    });
    reader.readAsArrayBuffer(file);
    console.log(s);
}

// END GLOBAL FUNCTION DEFS

window.onkeydown = (e) => {
    wasm.keydown(global_context, e.key);
}

document.getElementById("file").onchange = () => {
    wasm.new_file_available(global_context);
}

let render = () => { wasm.render_abi(global_context); requestAnimationFrame(render); }

requestAnimationFrame(render);

 */