title: How to render a building using Three.js extrusion method?
body: <p>I'm trying to render a 3D building procedurally using Three.js. One of the ways this is done is by extruding a square/rectangle. See Fig. 19 here: <a href="http://www.gamesitb.com/SurveyProcedural.pdf" rel="nofollow noreferrer">http://www.gamesitb.com/SurveyProcedural.pdf</a></p>
  
  <p>I've looked at the Three.js documentation for the ExtrudeGeometry API, but its usage isn't very clear. Have searched the web and this forum for possible examples/code snippets - in vain! Any pointers on this would be helpful. Thanks.</p>