Hi all.

I am currently in the process of deciding which engine to use for my next commercial project. I am currently Inbetween minds on whether to use Unity or Unreal.

My preference would be to use Unity for various reasons however, my project requires over 100 acres of 1metre accurate data. Previously I have exported thus data out of a mapping software as a height map and then straight into the previous engine which has kept the data at 1metre accuracy.

After searching the forum for a bit of guidance with this I have decided to post the question “is it possible?” Could I export a tiled height map (1metre accuracy) and import all of these tiles into Unity in the correct positions.

If anyone could shed a bit of light onto this for me that would be great as I really want to invest my time £ into unity.

Thanks in advance.

Terrains can be whatever resolution you want, with the limitation that each heightmap has a max size of 2049x2049 (or possibly 4097x4097; not sure if that currently works or not). So if that’s not enough for the whole area, then you can use multiple terrains.

–Eric

Thank you for your quick response Eric. However, surely a single height map at 4097x4097 wouldn’t be able to contain over 100acres of 1 metre data? Is it possible to have multiple terrains for different height maps which could then be automatically stitched together?

Thanks

Which can be easily stitched??

Well 1 acre is about 64x64 metres squared.

So 100 acres is about 640x640 metres squared

Thus you need an accuracy of 640 x 640 or rounding up to the nearest power of 2:

1024 x 1024

If the heightmap size has maximum resolution of 2048x2048 then that is plenty.

This is assuming your 100 acres of data forms roughly a square.

That wasn’t very hard to work out!