title: How to add event for a mesh in threejs?
body: <p>I am new to three.js, I am try to create a click event for a mesh I have created :</p>
  
  <pre><code>    const geometry = new THREE.BoxBufferGeometry(size,size*0.5,size);
      const material = new THREE.MeshStandardMaterial({color:0x00aa00 });
      var option1 = new THREE.Mesh(geometry, material);
      option1.position.set( 6, 5, 1)
      // option1.callback = objectClickHandler;
      // option1.on('click', function(ev) {
      //  console.log(ev)
      // });
      console.log(option1)
      scene.add(option1)
  </code></pre>
  
  <p>But this is not working. onclick I will hide and show the object I have imported. But not able to do so as click event is not triggering.Help would be much appreciated.</p>