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Re: Antes de FAC Club [message #53640] Fri, 27 April 2007 14:07 Go to previous message
David Fanning is currently offline  David Fanning
Messages: 11724
Registered: August 2001
Senior Member
kuyper@wizard.net writes:

> What precisely do you mean by "put this tower back in the proper
> orientation"? Do you actually want to modify the tower. If so, what
> kinds of modification are permitted, and whjch are prohibited?
> Alternatively, are you trying to find a point of view that makes it
> look "similar" in some sense to the way it would look if it didn't
> list? If so, in what way should the appearance be "similar"?

Here is one approach I have thought about, and haven't tried
to implement yet. If I took contours through the several
cans piled on top of each other, as I got closer to the
top of the tower the contours would get more and more like
ellipses, rather than circles, because the cans at the top
lean more than the cans at the bottom.

If I found the center of each contour, and fitted a line
though them, say with a stiff wire. I would like to be able to
bend the stiff wire into a straight line and tilt the
entire structure until the straight line was perpendicular
to the XY plane and pointing in the +Z direction. As I did
so, I would carry the cans with me.

The effect I am trying to achieve is to stack each can on
top of the other, so that if I look down on them from above
(you can imagine gazing into your lover's eyes), I would
see a sort of bulls-eye pattern.

I'm afraid modesty prohibits me from actually providing a
picture.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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