前端使用3D模型引入
import './three.js-master/build/three.js'
import './three.js-master/examples/js/loaders/OBJLoader.js'
import './three.js-master/examples/js/loaders/MTLLoader.js'
import './three.js-master/examples/js/loaders/DDSLoader.js'
import './three.js-master/examples/js/controls/OrbitControls.js'
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