title: TypeError: this.mesh.geometry.area is not a function
body: <p>I've working lately with JavaScript and Three.js with Leapmotion, and I started using the leap widgets (<a href="http://blog.leapmotion.com/leapjs-widgets-new-library-3d-web-design/" rel="nofollow">http://blog.leapmotion.com/leapjs-widgets-new-library-3d-web-design/</a><a href="http://blog.leapmotion.com/leapjs-widgets-new-library-3d-web-design/" rel="nofollow">here!</a>) library to add some cool buttons to my program.</p>
  
  <p>After many hours, I got this type error from one of the libraries. Is it something mine? I just can't figure it out...</p>
  
  <pre><code>TypeError: this.mesh.geometry.area is not a function
  </code></pre>
  
  <p>This refers to this code:</p>
  
  <pre><code>  this.mass = this.mesh.geometry.area() * this.density;
  </code></pre>
  
  <p>This library doesn't look like its working ok.</p>