circle可以打印出一个对象，但是我添加position 不行，还会报以下错误function initContent() { circle = createMesh(new THREE.CircleGeometry(circleR, 32)); circle.position.y += 15; scene.add(circle);}function createMesh(geometry) { var manager = new THREE.LoadingManager(); manager.onProgress = function (item, loaded, total) { // console.log( item, loaded, total ); }; var texture = new THREE.Texture(); console.log(img); var loader = new THREE.ImageLoader(manager); loader.load('https://fuss10.elemecdn.com/e/5d/4a731a90594a4af544c0c25941171jpeg.jpeg', function (image) { // loader.load('http://10.1.2.232:8089/threeDemo2/img/bg.png', function ( image ) { texture.image = image; texture.alpha = 1; texture.needsUpdate = true; texture.wrapS = THREE.RepeatWrapping; texture.wrapT = THREE.RepeatWrapping; }); var meshMaterial = new THREE.MeshBasicMaterial({ // normalMap: texture, map: texture }); // meshMaterial.side = THREE.DoubleSide; return new THREE.SceneUtils.createMultiMaterialObject(geometry, [meshMaterial]); }