@woosh/meep-engine/src/engine/animation/curve/editor/createCurveUploader.js

Pure JavaScript game engine. Fully featured and production ready.

import Signal from "../../../../core/events/signal/Signal.js";
import {uploadViaElement} from "./uploadViaElement.js";
import {AnimationCurve} from "../AnimationCurve.js";

/**
 * Create upload to get curve data and trigger a signal
 * @param {HTMLElement} el
 * @returns {Signal}
 */
export function createCurveUploader(el) {
    const onCurveChange = new Signal();

    let curve = new AnimationCurve();
    uploadViaElement(el, (text) => {
        try {
            const importedCurve = JSON.parse(text);
            curve.fromJSON(importedCurve);
            onCurveChange.send1(curve);
        } catch (err) {
            console.error("Invalid JSON curve file:", err);
        }
    });

    return onCurveChange;
}