Jerry
62 lines
1.5 KiB
JavaScript
62 lines
1.5 KiB
JavaScript
import { buildMeshDataFromGlbBuffer } from "./glbMeshData.js";
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import { meshDataTransferList } from "./meshTransfer.js";
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const activeControllers = new Map();
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function fetchError(url, response) {
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return new Error(`Failed to fetch ${url}: ${response.status} ${response.statusText}`);
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}
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async function loadArrayBuffer(url, signal) {
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const response = await fetch(url, { signal });
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if (!response.ok) {
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throw fetchError(url, response);
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}
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return response.arrayBuffer();
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}
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self.addEventListener("message", async (event) => {
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const message = event.data || {};
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const id = message.id;
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if (!id) {
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return;
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}
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if (message.type === "cancel") {
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activeControllers.get(id)?.abort();
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activeControllers.delete(id);
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return;
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}
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if (message.type !== "loadGlb") {
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return;
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}
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const controller = new AbortController();
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activeControllers.set(id, controller);
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try {
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const buffer = await loadArrayBuffer(message.url, controller.signal);
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const meshData = await buildMeshDataFromGlbBuffer(buffer);
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if (controller.signal.aborted) {
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return;
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}
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self.postMessage(
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{ id, ok: true, meshData },
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meshDataTransferList(meshData)
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);
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} catch (error) {
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if (!controller.signal.aborted) {
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self.postMessage({
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id,
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ok: false,
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error: {
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name: error?.name || "Error",
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message: error instanceof Error ? error.message : String(error)
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}
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});
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}
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} finally {
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activeControllers.delete(id);
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}
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});
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