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what map limit 45x45 km ?

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    what map limit 45x45 km ?

    hello to all.
    i have seen that the limit to editor grid is 20.2 x 20.2 km..

    and i have read that UE4 can now have 45 x 45 km..

    and i have placed some mesh to reach 60 x 60 km..

    so, can anyone explain, what is specifically bound on the 20x20km limit and the 45x45km limit?..

    what happens beyond 45x45km limit?..
    what limits specifically? calculations? physics? pathfinding?

    #2
    Any mathematical calculation occurring in world space measures because of Float's 32-Bit Floating point values and Floating Point Precision relative to those values.
    Max 3.4028237 × 10^38
    Min 1.175494 × 10^-38

    Performing calculations above 2k distance starts returning less floating point precision. this eventually makes it so that X+Y == X because the precision is so low that it results as 0.

    To prevent that, you just shift the world origin point and you can have infinite size maps.

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      #3
      You can use World Composition with origin shifting which allows you to combine many maps to reach the ultimate size that you want, I believe the maximum before things become an issue is 6km x 6km

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