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flow map generation

Started by Demostenes, September 05, 2013, 01:15:28 am

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Hello, it is possible to somehow generate flow/weight map without affecting height map? We have finished height map exported from game engine and we would like to generate flow maps, but without affecting the heightmap. Erosion always changes height map and makes flow map for the new shape. It is somehow possible to workaround that? Thanks.


Hi Demostenes,

I'm no expert here (yet), but I can tell you that the value in the Erosion device that you want to play with most is "Rock hardness."  Keeping the "Rock hardness" value at max setting will retain your original height map's form.

I created an example file to help illustrate this, to the best of my current knowledge.  You can download it down below.

I hope this helps, or, at least, points you towards the right direction.  If not, I'll try again.
8 GB RAM, 2 GB NVIDIA graphics, Intel Core processor, Windows 10, and tons of coffee.



Can't you just output an erosion device not connecting it to the final height output? I've done this before myself. Just have a separate erosion device not connected to outputs but get your flow map off that. Or duplicate the device that is inputting into the erosion device- plug that into another erosion device and get flow from that. Thst way you can still get erosion, and a flow map from erosion that is not affecting the terrain.



yep, my first advice would be to do what monks recommends -- just add an additional erosion device (set to low duration so it doesn't take too long) and take only the flow information rather than the actual eroded output.
-- Stephen Schmitt
- Creator of World Machine


September 07, 2013, 11:42:34 am #5 Last Edit: September 07, 2013, 11:44:27 am by BrianLockett
Hmm, I didn't think of that.  I started to go the route of using an additional Erosion device at first, but I didn't have much inking to simply set it to a low duration (that value is still a bit vague to me), so I tried a route of preserving the original height map's form.  But this is so much simpler.   :P
8 GB RAM, 2 GB NVIDIA graphics, Intel Core processor, Windows 10, and tons of coffee.

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