title: Closest Approach question for math/physics heads
body: <p>I'm using a Segment to Segment closest approach method which will output the closest distance between two segments of length.   Each segment corresponds to a sphere object's origin and destination.  The speed is simply from one point, to the other. </p>
  
  <p>Closest Approach can succeed even when there won't be a real collision. So, I'm currently using a 10-step method and calculating the distance between 2 spheres as they move along the two segments.  So, basically the length of each segment is the object's traverse in the physics step, and the radius is the objects radius.  By stepping, I can tell where they collide, and if they collide (Sort of; for the MOST part.)..</p>
  
  <p>I get the feeling that there could be something better.  While I sort of believe that the first closest approach call is required, I think that the method immediately following it is a TAD weak.  Can anyone help me out?  I can illustrate this if needed.</p>
  
  <p>Thanks alot!
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