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I'm wondering if there's a script to draw a path around a volume given a slope (for instance 5.8% (= 3.3°)).

Manually, I can draw such a path, but I need to adapt reference point from time to time, like in real life with a theodolite. manual path finding

Maybe, using 4 boolean operations with plane, one for each direction, and only keeping the vertices, then again, incrementing vertice position, then joining them together? plane cut Hope it makes sense.

Do you know about an existing script? Or can you explain me how to deal with resulting vertices after a plane boolean op? Can I "snap to vertex" to prevent adding vertices in the process?

Thanks!

More details in https://blenderartists.org/t/least-cost-path-for-blender-terrains/1226571/3

EDIT: Here's a terrain with an empty for a village location. blend file

Find the path to the peak!

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  • $\begingroup$ Given example add curve extra objects loxodrome spiral, shrinkwrap in X and Y onto landscape. $\endgroup$
    – batFINGER
    Commented May 8, 2020 at 18:28
  • $\begingroup$ To clarify if the objective is to get as "high" as possible, but never climb above a certain grade. Would find global max, set as target. The result (for example terrain shown) is quite likely a more direct route to higher peak and tacking up the mountainside This is related blender.stackexchange.com/questions/174727/… The "foot" can be used to choose way to go. For a question like this recommend adding a terrain blend for testing purposes. $\endgroup$
    – batFINGER
    Commented May 8, 2020 at 19:13
  • $\begingroup$ Thank you! The spiral projection doesn't work the same way for real landscape. It could work for simple volumes though. Thanks for the link, I'll see that tomorrow. I'll add a terrain $\endgroup$
    – j2l
    Commented May 8, 2020 at 19:19

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