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

[Py Fave]

check pdmtl abstractions too.
they contain that and a lot more .

check gems.* patches

https://github.com/aalex/pdmtl


2013/12/6 tim vets <timvets at gmail.com>

> [list-dotprod] from list-abs might come in handy
>
>
> 2013/12/6 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.
>>
>>
>> Claude
>>
>>
>>  As I see it, the process goes this way:
>>> - define a line from coordinates x1,y1,z1 to x2,y2,z2
>>> - declare the point x3,y3,z3
>>> - find the distance from that point to the nearest point belonging to
>>> the said line
>>>
>>>
>>> Any existing examples with gem rendering would be great.
>>>
>>> Thanks as usual,
>>>
>>> jmmmp
>>>
>>
>> --
>> http://mathr.co.uk
>>
>>
>>
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>
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