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000251_owner-lightwave@webcom.com_Fri Jun 16 00:02:06 1995.msg
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Date: Fri, 16 Jun 1995 02:45:06 -0400 (EDT)
From: Joe Angell <jangell@risd.edu>
Subject: Re: Spiral Pathway - Help!
To: Christian Graham <bss104@bangor.ac.uk>
Cc: lightwave@webcom.com
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> P.S. Does this mailing list still exist - haven't heard anything since
> the 7th..... - can someone please email even if they don't have the
> solution so that I at least know this is getting through. Thanks a million.
Yes, we still exist. (I think...)
As for the spiral pathway... I don't know if this would help, but you
MIGHT be able to lathe a shape (say, a rectangle that's off-axis of the
lathe center) up to make a twisted pathway. You'd do something like
setting the lathe with 3600 degree rotation and 160 sections (or more, and
moving it up X meters in the shift (or whatever it's called) zone. That
might work, but for some reason I don't thing that's the effect you want...
Hmmm. I just tried using a box with segments and twisting it, but all I
could get was a double helix (cool id you want DNA -- you could make rope,
too, by twisting some cylinders), but no path. Sorry -- got me stumped...
I just tried Vortex, too -- works kinda, but not really. If you do
Vortex, it thins out the ends. But I think I stumbled onto something...
AHA! OK, do this:
1) Make a box about 20 meters wide (x), 0 meters deep (z) and about .5
meters tall (y). Give it about 100 segments on the X.
2) goto Modify/Vortex. Make the vortex area box thingy really big, so it
covers the whole object, and put the + center at one end of the
100-segment block. Do this from the TOP view (so all you see is a line
from the top view).
3) Drag with the right mouse button from the + center to make the path
spin around the center until it's about as tight as you want it.
4) Click Multiply/Smooth Shift. Hit OK.
Voila! A nice, spinning path. The reason for the height in the path is
so Smooth Shift knows which way to move the polys (I don't know if 2-point
polys'll work -- you can try it). The reason I didn't use Vortex to start
is because it looks the path'll taper at the end.
BTW, if you wanted a SPLINE path, just use a 100 (or something) segmented
spline, vortex that, and then you could even rail extrude along it (but
you were having problems with that, right...? DOH!) Hope this helps...
-- Joe
--
Joe Angell <jangell@risd.edu> sent this message.
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