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Wikipedia:Featured picture candidates/Villarceau circles

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Animation showing how an obliquely cut torus reveals a pair of circles, known as Villarceau circles.

This image was created by User:Kieff, and illustrates in a very succint way the concept of Villarceau circles. It is simple and elegant.

  • The comments below were towards the old revision of this image.
    • Weak support, it's an excellent illustration of the concept, but the shading of the shadows in a few cases is very confusing and distracting from the actual shapes involved. Night Gyr (talk/Oy) 08:10, 2 October 2006 (UTC)[reply]
    • Oppose Despite watching the animation many times I still can't understand the creation of the circles so, for me, it's too confusing and doesn't add value to the article - Adrian Pingstone 14:55, 2 October 2006 (UTC)[reply]
    • Support Debivort 17:26, 2 October 2006 (UTC)[reply]
    • Weak oppose. Maybe it is the article going over my head, but I have the same problem as above. I took a long time see the circles. I would suggest highlighting the circles when the animation is frozen at the end. I would support then. say1988 19:07, 2 October 2006 (UTC)[reply]
    • Oppose as the per the reasons above. Part of the problem is that I have trouble following the movement of the torus. I think the object needs more texture to aid in this. As it is, as it slides around, I have trouble visualising the movement in three dimensions so when it finally stops, I'm a bit puzzed by the angle I'm viewing, and what its significance is. Diliff | (Talk) (Contribs) 19:30, 2 October 2006 (UTC)[reply]
      • Comment. It's good to hear opinions about the animation coming from people not familiar with this sort of thing, because that's exactly the kind of people the animation should be helping. You guys made good points, though. The animation needs better reference points and the lighting is creating confusing shadow patterns. I'm working on an improved version that should fix these issues :) Just give me a few mins. ☢ Ҡiff 20:24, 2 October 2006 (UTC)[reply]
    • Oppose. Per Say1988. The red highlights show very poorly against the gray, it took me several times watching to even notice that they were there. I would suggest a shade of bright green like chartreuse against that particular shade of gray. Making each highlighted circle a different colour (aqua or bright yellow would be my suggestion for second colour) would be would make the circle pattern easier to notice. --Pharaoh Hound (talk) 21:31, 2 October 2006 (UTC)[reply]

New version

[edit]

Promoted Image:Villarceau circles.gif --KFP (talk | contribs) 14:33, 9 October 2006 (UTC)[reply]