title: Implementing Marching Cube Algorithm?
body: <p>From My last question: <a href="https://stackoverflow.com/questions/776664/marching-cube-question">Marching Cube Question</a><br></p>
  
  <p>However, i am still unclear as in: </p>
  
  <ol>
  <li>how to create imaginary cube/voxel to check if a vertex is below the isosurface?</li>
  <li>how do i know which vertex is below the isosurface?</li>
  <li>how does each cube/voxel determines which cubeindex/surface to use?</li>
  <li>how draw surface using the data in triTable?</li>
  </ol>
  
  <p>Let's say i have a point cloud data of an apple.<br>
  how do i proceed?</p>
  
  <p>can anybody that are familiar with Marching Cube help me?<br>
  i only know C++ and opengl.(c is a little bit out of my hand)</p>