EdgesGeometry with 3MF model

HTML

<!DOCTYPE html>
<html lang="en">
  <head>
    <title>three.js webgl - animation - keyframes</title>
    <meta charset="utf-8" />
    <meta
      name="viewport"
      content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0"
    />
    <link type="text/css" rel="stylesheet" href="main.css" />
    <style>
      body {
        background-color: #bfe3dd;
        color: #000;
      }

      a {
        color: #2983ff;
      }
    </style>
  </head>

  <body>
   <div id="WebGL-output">
        <style>
            body{margin: 0;overflow: hidden;}
        </style>
    </div>

    <script type="module">
      // https://threejs.org/

      import * as THREE from "https://threejs.org/build/three.module.js";

      import Stats from "https://threejs.org/examples/jsm/libs/stats.module.js";

      import { OrbitControls } from "https://threejs.org/examples/jsm/controls/OrbitControls.js";
      import { RoomEnvironment } from "https://threejs.org/examples/jsm/environments/RoomEnvironment.js";


        let screenWidth=document.documentElement.clientWidth || document.body.clientWidth;
        let screenHeight=document.documentElement.clientHeight || document.body.clientHeight;

        //scene
        let scene=new THREE.Scene();


        //geometry
        let geometry= new THREE.TorusKnotGeometry(50,10,50,20);
        //material
        let matColor=new THREE.MeshPhongMaterial({color:0xffffff});
        let mesh=new THREE.Mesh(geometry,matColor);
        scene.add(mesh);

    

        //outlineScene
        let outlineScene=new THREE.Scene();

        //轮廓着色器
        //着色器材质
        const matShader=new THREE.ShaderMaterial({
            uniforms: {
                offset:{
                    type: 'f', //指定变量类型为float
                    value:1.0  //偏移值
                }
            },
            vertexShader: [
                "uniform float offset;",
                "void main() {",
                "vec4 pos = modelViewMatrix * vec4(...