Does anyone know how to create perfectly straight lines with the terrain editor?

[f0sp]

I’m trying to make a perfect square out of terrain water, but none of the tools in the terrain editor allow for straight lines. I thought the “snap to grid” setting might do the trick but it appears to do nothing!

Anyone know what I’m doing wrong/what to do?

Edit: My gif wasn’t appearing correctly, it should be now.

[M_caw (Macaw)]

Try using sea level. It helps you create a level, square section of water.

Here’s a good example.

An alternative would be part to terrain, just make a square part and then turn it to water.

[f0sp]

Sea level worked perfectly. Thank you!