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Extract Navmesh Polygon's, and Track AI motion

Hi,

I’m new to UE4, and am trying to work on how to extract the Navmesh. Once I’ve got that information, I want to be able to develop an AI that will try and color the entire Navmesh.

I’ve seen some samples online, but am not sure how to reproduce some of it.

Any help is greatly appreciated.

I’m mainly aiming to use Blueprints.

I’ve currently got a blueprint that generates a set of tiles, and as the Pawn runs over them highlights the tiles and shows a completion.