Rune wrote:
> 
> How do I find the distance from the point P to the nearest point in the line
> segment defined by point A and point B?

I would do it like this:


#macro Dist2LnSegm(pP, pA, pB)

  #local vL = pB - pA;
  #local ss = vdot(pP - pA, vL)/vdot(vL, vL);
    
  vlength(pP - (ss >= 1 ? pB : pA + max(ss, 0)*vL))

#end // Dist2LnSegm


Tor Olav
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http://www.crosswinds.net/~tok/tokrays.html

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