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   let ray = new THREE.Raycaster()
    ray.setFromCamera(normalMouse, this.camera)
    ray.params.Points.threshold = 2 // 对于不同的scale 这个固定的值会导致无法像碰撞检测那样精准的拾取，有无更好的方案？
    let intersects = ray.intersectObjects(this.scene.children).filter(e => e.object.type === 
   'Points' && !e.object.name.startsWith('hl'))