[PD] Find distance to a line in 3d space

Max abonnements at revolwear.com
Thu Dec 26 01:33:40 CET 2013


Hi João,
I patched something for you, maybe it's useful.

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http://mathsfirst.massey.ac.nz/Algebra/PythagorasTheorem/pythapp.htm


Am 11.12.2013 um 02:30 schrieb João Pais <jmmmpais at googlemail.com>:

> Am 06.12.2013, 00:51 Uhr, schrieb Claude Heiland-Allen <claude at mathr.co.uk>:
> 
>> On 05/12/13 23:40, João Pais wrote:
>>> Hello list,
>>> 
>>> I had a doubt, will try to explain.
>>> 
>>> I wanted to define a line in a 3d space through 2 points, and be able to
>>> find out the distance from another point to that line. Since I'm very
>>> bad at math, I wanted to know if anyone has done something similar, or
>>> knows how to get to it.
>> 
>> http://paulbourke.net/geometry/pointlineplane/
>> 
>> first example on the page, you just need to clamp u to [0..1] if you
>> want to make it work for a line segment instead of an infinite line.
> 
> it looks interesting, and I also checked for more content with a similar title. the thing is, my math/geometry skills are too bad, and I don't understand where they get the formulas for the points and lines. I'll keep watching the links, but I might not get it in time for the purpose I was looking for.
> 
> thanks anyway,
> 
> João
> 
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