How to plan path on STL mesh?

Hi everybody,

I am trying to make program for automatic trajectory planning for painting applications. Unfortunately, after finding optimal overlap distance I dont know how to plan trajectory on the STL surface.

Do you have any experience with that? I would be very happy for any kind of help.

Result should look like the result on the attached picture.

Thank you in advance, Lukas.

[jianbo tang]

I want to know the answer too.