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    It's obvious you put a lot of work into composing this question. Unfortunately, there's no way for us to answer it here. We're not Microsoft. Commented Mar 23, 2016 at 14:55
  • Microsoft people don't look here? I thought we were crowdsourced. Commented Mar 23, 2016 at 23:38
  • If you want an answer from a Microsoft employee asking SE is not likely to give you that. It is possible that somebody from Microsoft with that knowledge is part of this community, but definitely not guaranteed. So, why not ask Microsoft directly instead? Commented Mar 24, 2016 at 0:18
  • Because 20 years of programming on the Microsoft stack has taught me little is more futile than asking Microsoft, even through MSDN, about the implementations of their own programs; they're simply not structured so that their code becomes documented. I thought a graphics programmer looking here would see the wireframes change and be able to suggest something robust. Instead I see that an hour can't go by without someone starting a closure wave. This is a narrow question with two followups: Which algorithms do these things to triangle meshes? Commented Mar 24, 2016 at 1:16
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    Since answering is blocked, I'll glaze over my answer: The slice operation is implemented using Constructive Solid Geometry algorithms. The simplify operation is an implementation of mesh optimization. The "detect" operation most likely is a convexity test. The CSG algorithm makes it possible to detect holes so that covers that. Hope this helps. Commented Mar 25, 2016 at 8:51