Hello,
With the current recast build, is it possible to build navmesh on a primitive sphere??
It seems it is not possible with the recast library:
You need to have a single up direction across the whole world for the library to work.
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@Evgeni_Popov is right. Only 1 direction (up) is allowed. So at best, you can get half a sphere. I plan to add any mesh as a navmesh. So potentialy, use a sphere for navigation. It’s on my todo list 
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@Evgeni_Popov
Yeah I was getting a hemispheric shape, Thanks for the clarification!!
@Cedric 
that will be awesome!!