Hi Nathan,

I am not a BRL-CAD developer, but I have used it for a long time.  I personally 
do not know of a way to adjust that limit.  To me, the easiest thing to do 
would be to scale up your model.  If you are modeling a nm scale object, apply 
those values in a mm scale.  Then it is just a matter of decimal placement.

Robert Anderson

-----Original Message-----
From: Nathan McCorkle [mailto:nmz...@gmail.com] 
Sent: Wednesday, February 04, 2015 7:59 PM
To: brlcad-users@lists.sourceforge.net
Subject: [brlcad-users] Is it possible to reduce the minimum size for PIPE 
primitive?

I read in regards to the end-points of the PIPE primitive:
    "Points may not be coincident; they must be offset by at least 0.0001 mm."

so I'm confused with why the PIPE command has this constraint, when I've read 
in BRLCAD docs something like it supports 'from subatomic to galactic' scales 
with perfect representation.

100nm is larger than the smallest thing I have plans to model (nanofluidics), 
can I somehow reduce that 0.0001 number (is it some macro or hard-coded value?) 
or do I have to write my own PIPE-type helper function that joins cylinders and 
torii?

Thanks!

--
-Nathan

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hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/
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