erodeHeightfield
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erodeHeightfield(
field,p):Eroded
Defined in: sdk/src/terrain/heightfield.ts:158
Hydraulic erosion: drops of rain fall at random over the field, each runs downhill carrying what it can for its speed and the water in it,
cuts the ground where it carries less than it could, lays it down where it carries more or slows (in a hollow, on a flat, as it dries),
and evaporates as it goes. What is left has gullies down the slopes, sharper ridges between them and silt in the valleys, and where the water
ran is kept as flow. The same seed wears the same ground everywhere.