The terrain editor is used to manually modify the terrain height map and square properties. Terrain editing is accomplished using the brush. The brush is a selection of terrain points or squares centered around the mouse cursor. The brush is either a circle or square area, and can be one of several size selected from the brush menu. The brush can also be either a hard brush - where the affect on the terrain is the same across the surface of the brush - or a soft brush - where the brush's influence on terrain diminishes towards the edges of the brush. The Terrain Editor Settings dialog filter view controls the falloff of the soft brush.
The following terrain editing action modes can be selected from the <font:Arial Bold:16>Action<font:Arial:16> menu.
<font:Arial Bold:16>Select<font:Arial:16> - Painting with the brush selects grid points
<font:Arial Bold:16>Adjust Selection<font:Arial:16> - The currently selected grid points can be raised or lowered as a group
<font:Arial Bold:16>Add Dirt<font:Arial:16> - "Dirt" is added at the center of the brush
<font:Arial Bold:16>Excavate<font:Arial:16> - "Dirt" is removed from the center of the brush
<font:Arial Bold:16>Ajust Height<font:Arial:16> - The brush selection can be dragged to raise or lower it
<font:Arial Bold:16>Flatten<font:Arial:16> - The brush surface is set to a flat plane height
<font:Arial Bold:16>Smooth<font:Arial:16> - Rough areas are made more smooth in the bounds of the brush
<font:Arial Bold:16>Set Height<font:Arial:16> - The terrain within the brush is set to a constant height (configurable in the Terrain Editor Settings)
<font:Arial Bold:16>Set Empty<font:Arial:16> - The squares covered by the brush are made into holes in the terrain
<font:Arial Bold:16>Clear Empty<font:Arial:16> - The squares covered by the brush are made solid
<font:Arial Bold:16>Paint Material<font:Arial:16> - The current terrain texture material will be painted with the brush
