Eroding Terrains

Erosion simulates the effects of water erosion on your terrain objects. The calculations simulate rainfall and runoff based on the shades of gray progressing towards black. This effect works best on terrains that have large sloping areas.

The Erode button simulates the effects of erosion over relatively short periods of time, like decades. To simulate the effects of centuries of erosion, use the Eroded tool.

The upper image is what a terrain looks like before you apply the Erode effect. Notice that this image map has sloping areas that will make the erode effect more visible. The lower image is the same terrain after the Erode effect is applied. You can see how the surface now contains tracks created by running water.

To erode terrains:

1. Click the Elevation tab.
2. Click the Erode button.
   
   
3. To gradually apply erosion, click and drag while the pointer is over the Erode button.

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