title: 3D Point inside object
body: <p>I have searched and searched for this question but I can't really understand any answer I found. My problem is quite simple: </p>
  
  <p>Having one mesh (3D non-convex polygon built from triangles), I scan the space (xyz) and I need to find all the points that are "inside" the mesh for later processing. I repeat I've seen a lot of answers on this but I can't understand them. </p>
  
  <p>Anyone around to help?? </p>