title: Progressive Loading / LOD / Streaming Mesh in Three.js
body: <p>I am loading stl files into a three.js scene using the STL loader. These stl files range from 5mb to 50mb. </p>
  
  <p>Is there a method I can use to progressively load/stream/increase level of detail (not sure of the correct terminology) as the model loads so that my users aren't staring at a blank screen for minutes before anything appears? </p>
  
  <p>If the model is 20,000 triangles, does three.js have a method for maybe loading only 2,000 first and then progressing to the fully detailed model? </p>