title: How can I tessellate the boundary of a point cloud?
body: <p>I have a cloud of vertices.  I'd like to tessellate a "shell" around the vertex cloud using only vertices in the cloud, such that the shell conforms roughly to the shape of the vertex cloud.</p>
  
  <p>Is there an easy way to do this?  I figured I could spherically parameterize the point cloud and then "walk" the outermost vertices to tessellate the cloud, but I'm not sure this will work.</p>
  
  <p>I suppose it's acceptable to add vertices, but the general shape of the "shell" should match the shape of the vertex cloud.</p>