The spirals are an issue, it's just a hard problem to solve automatically. Giving the algorithm facegroups/materials to cut the mesh up into multiple parts and to mark hard edges helps, but it's still hard to get a usable mesh out without manual fixing.I use Exoside's Quadremesher (the same algorithm as Zbrush's) and it's…
If a 3d scan is really hi res with sharp edges Zbrush Zremesher with "detect edges" on does pretty nice job actually without much of spiraling edge loops. As well as 3d max one. The issue are things like blades with triangle profile where it can't recognize the cutting edge . Boxes and cylinders with holes are often sort…
if you're looking at conventional (non-ML) algorithms there really aren't any very good ones for inferring a direction of flow from an arbitrary cloud of points cos it's just not a thing you can express mathematically. ML is probably the answer to this one. it's an ideally suited problem ... That of course means you'll be…