jsketcher/web/app/cad/craft/e0/occtBundle.ts

import { GenericWASMEngine_V1 } from "engine/impl/wasm/GenericWASMEngine_V1";
import { CraftEngine } from "./craftEngine";
import { createOCCService, OCCService } from "cad/craft/e0/occService";

export interface OCCBundleContext {
  craftEngine: CraftEngine; // to be removed

  occService: OCCService;
}

export function activate(ctx) {
  loadWasm(ctx);

  const wasmEngine = new GenericWASMEngine_V1();

  ctx.services.craftEngine = new CraftEngine(wasmEngine, ctx);
  ctx.craftEngine = ctx.services.craftEngine;

  // ctx.modellingEngine = OCCModellingEngine(OCI.EngineCommand);
  ctx.occService = createOCCService(ctx);
}

//* work around until tauri v2
async function instantiateEngine(importObject, callback) {
  const url = "./lib-assets/jsketcher-occ-engine/occt.wasm";

  const response = await fetch(url);
  const buffer = await response.arrayBuffer();

  const obj = await WebAssembly.instantiate(buffer, importObject);
  callback(obj.instance);
}

function loadWasm(ctx) {
  ctx.services.lifecycle.startAsyncInitializingJob("e0:loader");

  // @ts-ignore
  window.Module = {
    // locateFile: function(file) {
    //   return SERVER_PATH + file;
    // },
    onRuntimeInitialized: function () {
      Module._InitCommands();
      ctx.services.lifecycle.finishAsyncInitializingJob("e0:loader");
    },
    instantiateWasm: function (importObject, fncReceiveInstance) {
      instantiateEngine(importObject, fncReceiveInstance);
      return {};
    },
  } as any;

  const mainScript = document.createElement("script");
  mainScript.setAttribute("src", "./lib-assets/jsketcher-occ-engine/occt.js");
  mainScript.setAttribute("async", "async");
  document.head.appendChild(mainScript);
}

export const BundleName = "@OCCT";