title: How calculate a volume of this mesh 3D?
body: <p><img src="https://i.stack.imgur.com/7sakW.png" alt="enter image description here">I work about one project. We generate a mesh 3D and I need to calculate few volumes of an 3D object.</p>
  
  <p>I don't know how to calculate that, too less math knowledge I think. Is there a way to calulate this</p>
  
  <p>EDTI : I am not looking for all the code but the direction or pseudo code</p>