text: /**
   * 点光源帮助器
   */
  class PointLightHelper extends THREE.Object3D {
      constructor(color) {
          super();
  
          this.name = _t('Helper');
  
          var geometry = new THREE.SphereBufferGeometry(0.2, 16, 8);
          var material = new THREE.MeshBasicMaterial({
              color
          });
          var mesh = new THREE.Mesh(geometry, material);
  
          // 帮助器
          mesh.name = _t('Helper');
          mesh.userData.type = 'helper';
  
          this.add(mesh);
  
          // 光晕
          var textureLoader = new THREE.TextureLoader();
          var textureFlare0 = textureLoader.load('assets/textures/lensflare/lensflare0.png');
          var textureFlare3 = textureLoader.load('assets/textures/lensflare/lensflare3.png');
  
          // 光晕
          var lensflare = new THREE.Lensflare();
          lensflare.addElement(new THREE.LensflareElement(textureFlare0, 40, 0.01, new THREE.Color(color)));
          lensflare.addElement(new THREE.LensflareElement(textureFlare3, 60, 0.2));
          lensflare.addElement(new THREE.LensflareElement(textureFlare3, 35, 0.4));
          lensflare.addElement(new THREE.LensflareElement(textureFlare3, 60, 0.6));
          lensflare.addElement(new THREE.LensflareElement(textureFlare3, 45, 0.8));
  
          lensflare.name = _t('Halo');
          lensflare.userData.type = 'lensflare';
  
          this.add(lensflare);
      }
  }
  
  export default PointLightHelper;