Intersecting 3D line Segments
<p>How do I determine whether or not two 3D line segments intersect given XYZ coordinates for the start and end points of each line?  If they do intersect, at what XYZ?</p>
<p>I've only been able to find answers for 2D: <a href="https://stackoverflow.com/questions/563198/how-do-you-detect-where-two-line-segments-intersect">How do you detect where two line segments intersect?</a></p>