Reproduces water’s flowing action on the terrain’s surface. Flows erode cliff formation, transport eroded stratum to another location and settle it as a sediment. Note that all of the flows, erosion and sediment calculations are iterative and very resource intensive, this makes the Erosion Generator the slowest generator of all the MapMagic generators. It usually takes a second to generate erosion with the default parameters on a modern computer - compared to any other generator which are nearly realtime. But the result is usually worth it.
Iterations: number of passes the generator should perform. This parameter determines the performance directly. In most cases there is no need to set it more than 5-7 as further erosion becomes less noticeable. Iterations: 1, 3, 5, 10
Durability factor: determines how durable the input terrain is - i.e. how much it is affected by the flow erosion. Lower values will erode the land more with each iteration but the overall result will be less accurate and predictable, so it is recommended to set this value to 0.8 or higher. If value is set to 1 then the land will not be eroded at all.
Durability: 0, 0.5, 0.9, 0.99
Sediment factor: this factor multiplies the amount of stratum that will be settled out of the flow. A value 0 means that all of the eroded land will be disintegrated or carried away somewhere so that no sediment will be left at all, just eroded land will remain. A value 2 means that the stratum amount will be magically doubled before it settles. A realistic value should be slightly below 1, but fine results can be achieved within all of the 0-2 value range.
Fluidity iterations: the amount of passes used to calculate flow runs. A higher value means the farther sediment will travel from where the stratum was originally eroded. Together with the Iterations parameter it affects performance greatly.