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MathGroup Archive 2012

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Re: How do I create a circular lamina?

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  • Subject: [mg127519] Re: How do I create a circular lamina?
  • From: John Doty <noqsiaerospace at gmail.com>
  • Date: Wed, 1 Aug 2012 04:55:10 -0400 (EDT)
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On Monday, July 30, 2012 9:38:20 PM UTC-6, Mark Green wrote:
> Hi,
>
>
>
> I want to be able to visualize Euler's Rotation Theorem (I don't think there's an existing visualization/demonstration of that anywhere?), but in or
der to do so I need to draw two intersecting great circles of spheres.
>
>
>
> I can't see any primitive that allows a circular lamina or disk to be drawn in 3D.  There's Disk[] and Circle[] in 2D, but Mathematica won't allow them to be converted to 3D.  I can make one via revolution plotting a constant but that seems a really ugly hack.
>
>
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> Is there a good way of getting a circular lamina in 3D/

How about a very flat cylinder, like "Cylinder[{{0, 0, 0}, {0, 0, 0.001}}, 1]"? Make it Transparent to get a circle, let it default to opaque to make a disk.



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