Terrain

# Resizing terrain cells and manipulating the terrain¶

Due to only 50m cell size, OFP islands look quite blocky when played in OFP. However, if you import this terrain data directly, ArmA does apply some smoothing in-game so, as a result, they do look a lot smoother.

Roller supports a feature to recreate the same look at the OFP terrain by reducing the cell size, adding addition terrain points at the same positions they would have been in ArmA. This actually makes the terrain appear more blocky, since ArmA will not be able to smooth the terrain to the same degree!

The real benefit of resizing the cells for OFP islands is that then Roller can automatically add roughness to the terrain (creating bumps and dips by adding noise to the height data). This attempts to recreate the effect gained in OFP by reducing the terrain cell size in-game using the `1 setTerrainGrid` command. Alternatively, the user could manually manipulate the terrain converted from OFP, but this is unlikely to produce a good effect without an inordinate amount of effort.

Note that Roller allows the user to resize cell size down to levels that may cause ArmA to become unstable. It is suggested that cell size is not reduced below 10m (we recommend resizing OFP cells down to 12.5m).

## Example of OFP terrain with cells resized and bumpiness added¶

This image is shown previewed in buldozer without any textures. The rough surface of the land should be clearly visible.