• BCsven@lemmy.ca
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          4 天前

          At the deepest part where it surrounds stem tightly there will be an instant tangent which then immediately becomes non tangent. A G0 and G1 condition and not G2

            • BCsven@lemmy.ca
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              4 天前

              Doesn’t matter, the point where stem and dimple are deepest and encapsulated would have same vector direction initially. Topology doesn’t need to be cylindrical to have vectors

              • WildPalmTree@lemmy.world
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                3 天前

                I don’t have a dog in the race. I just think you are two big dorks and I love this discussion. I want at least a 20 minute YouTube video of the correct answer and why the other is wrong!

                • BCsven@lemmy.ca
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                  3 天前

                  Well you are in luck. No video but images of analysis. Hedgehog plot of normal vectors, they converge to flat at stem base. Hard to see since the stem/dimple share space.

                  Confirmation of immediate angle at stem base

                  Slope plot. Green being 0 degrees from up vector.

                  Dimple hole showing its not a cylindrical stem

                  Stem slope, green being immediate 0 vector

                • BCsven@lemmy.ca
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                  3 天前

                  I’m on a trip so won’t have access to my CAD analysis tools, so no video I’m afraid.

    • grue@lemmy.world
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      5 天前

      Considering that it was about topology, that might very well be the smartest couple’s dispute I’ve ever heard of.