// 创建管道 如果想让管道 转折处附近多设几个点curve = new THREE.CatmullRomCurve3([new THREE.Vector3(0, 200, 0),new THREE.Vector3(0, 200, -500),new THREE.Vector3(10, 200, -500),new THREE.Vector3(20, 200, -500),new THREE.Vector3(800, 200, -500)])tubeGeometry = new THREE.TubeGeometry(curve, 80, 10)// 贴图this.flowingLineTexture1 = new THREE.TextureLoader().load('img/flowLight.png')this.flowingLineTexture1.wrapS = this.flowingLineTexture1.wrapT =THREE.RepeatWrappingthis.flowingLineTexture1.repeat.set(1, 1)this.flowingLineTexture1.needsUpdate = truematerial = new THREE.MeshBasicMaterial({map: this.flowingLineTexture1,side: THREE.DoubleSide,transparent: true// depthWrite:false   // 透明管道材质需要设置depthWrite=false;否则内部流动的液体会被遮挡无法显示。})let tube = new THREE.Mesh(tubeGeometry, material)this.scene.add(tube)