• BCsven@lemmy.ca
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      2 个月前

      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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          2 个月前

          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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            2 个月前

            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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              2 个月前

              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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              2 个月前

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