• Nebula@fedia.ioOPM
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    2 days ago

    That is correct. It is only impossible to build this IRL. Thanks for explaining how this was made. That is really interesting. 🙂👍

    • blargle@sh.itjust.works
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      2 days ago

      It’s not impossible at all. It just has 3 sides, is concave, and you’re looking up at it. The tricky thing is the lack of perspective. It would only look like this with a very long lens.

      But it’s like one of these guys:

      • Nebula@fedia.ioOPM
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        2 days ago

        Edit 2: Keep your eyes only on the dark grey side.

        I have actually built this dragon, thanks for the hit of nostalgia. 😊

        Edit: It is probably inspired by the optical illusion you posted, but made actually impossible.

        • Odo@lemmy.world
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          2 days ago

          It’s half a cube (well, the outer walls of one), it’s just rotating the opposite way you first think it is. Not impossible at all, just a fun few moments of confusion until you catch on.

          • Nebula@fedia.ioOPM
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            2 days ago

            Light gray side moves through dark grey and vice versa. Rotate the dragon 360 degrees IRL and you will see why this isn’t possible.

            Edit: even if you made the sides at a perfect opaqueness, there is no way it would look like this IRL.

            • ImpermeableMembrane@lemmy.world
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              2 days ago

              You’re seeing a cube from above rotating left. That way doesn’t work. If you instead see a cube from underneath rotating right it very much does work.

    • Bonus@lemmy.world
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      2 days ago

      It’s just a cube, a basic form we build in real life all the time. You’re just seeing three sides expressed. Clear top, only drawn with vectors or lines; one opaque side; and one translucent side. Vectors elsewhere are not expressed. It is simply rotating and you’re seeing it revealed based on those opacities I already mentioned.