title: How to load an OBJ/MTL file in THREE.js from a browser upload?
body: <p>I've implemented many 3D viewers in THREE where the assets are hosted somewhere, but I'm running into a unique situation where we'd like to preview a model before it gets stored on the server.</p>
  
  <p>How would you go about uploading an OBJ with MTL textures and be able to render it by having these formats reference once another, just as they would if you were retrieving them as a served resource?</p>