Hello,
I'm trying to make a Right hyperbolic cylinder as

http://img.ctrlv.in/img/15/07/16/55a78f6b43b96.png

I have three points, apex-to-asymptotic distance for making hyperbola,
rectangular half-width.
I was trying to make it by taking help of non-linear functions but in it z axis
is not given

function { pow(x,2) + y }

as given on page
www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CCAQFjAAahUKEwid96qr9t7GAhVOBo4KHTCTBpE&u
rl=http%3A%2F%2Fwww.povray.org%2Fdocumentation%2Fview%2F3.6.1%2F73%2F&ei=6EGnVZ3jEc6MuASwppqICQ&usg=AFQjCNFkqWt6o07PYoG
yV5c74ncDYlqxuA&sig2=ayxlZZLEt8y3oNClqasTIA&bvm=bv.97949915,d.c2E


Is there any macro which can be used to make hyperbolic cylinder.




Thanks
Gurwinder Singh Bains

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