surface(area)

This is the constructor. It recieves the area the terrain references.

setTerrain(terrain)

This method defines the main terrain to apply or change within the area.

addTerrainLayer(terrain, percent)

This method adds a new terrain layer which borders the area. For example, going from shallow to deep water.

replaceTerrain(old, new)

This method is used when you want a certain terrain type to be replaced with another in the case of overlapping areas.

setForestType(type, percent)

This method is used to set a forest type and a percentage of how much of the land it takes up.

setElevation(min, max)

This method defines the variable height of the area.

setDepth(min, max)

This method defines the variable depth of the water area.

modifyElevation(int, blendRadius)

This method raises/lowers the elevation of each tile by the specified int.

modifyDepth(int, blendRadius)

This method raises/lowers the depth of each tile by the specified int.

clearDepth()

This method clears depth of area.

clearElevation()

This method clears elevation of area.