title: How can I set the position of a mesh before I add it to the scene in three.js
body: <p>In three.js, I want to add a mesh to a position in the scene</p>
  
  <p>I've tried:</p>
  
  <pre><code>// mesh is a THREE.Mesh
  scene is a THREE.Scene
  scene.add(mesh)
  scene.updateMatrixWorld(true)
  mesh.matrixWorld.setPosition(new THREE.Vector3(100, 100, 100))
  scene.updateMatrix()
  </code></pre>
  
  <p>BUT it didn't affect anything.</p>
  
  <p>What should I do ?</p>