title: How to find whether a point in a 3D space lies inside a truncated cone?
body: <p><a href="https://stackoverflow.com/questions/12826117/how-can-i-detect-if-a-point-is-inside-of-a-cone-or-not-in-3d-space">How can I detect if a point is inside a cone or not, in 3D space?</a> will not help because a truncated cone can be a cylinder.</p>
  
  <p>I tried another method which involves too many calculations and is huge.</p>
  
  <p>I'm looking for easier ways to find the presence/absence of a point inside a truncated cone.</p>
  
  <pre><code>Mid point of bottom of the truncated cone -&gt; x,y,z
  Mid point of top of the truncated cone -&gt; x, y2, z
  BottomRadius = r1
  TopRadius = r2
  </code></pre>