Thanks for your reply.
I wonder whether I can use my path planning knowledge to improve the linking of line segments in an STL into loops. May I know what is the current algorithm used for linking these line segments in the STL?
One more thing: while 3D printing, does a printing nozzle follows all lines in the STL and all links between those lines?
I can explain some of the details. There are 3 different rewrites of the engine by the way. There are many steps - an STL has all the triangles in random order so when you intersect that with a plane you get a bunch of unrelated random line segments and you Cura then goes and links them into loops but sometimes has trouble.
That's one of the key steps that it has trouble with.
What were you curious about in particular? infill algorithms? shell? Support algorithms? Slicing? "fix horrible" features? Calculating line width? There's tons of details but usually people only care about one tiny aspect.
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