Planetside Software Forums

General => Terragen Discussion => Topic started by: ethan on October 22, 2009, 10:03:04 AM

Title: eroding DEMs
Post by: ethan on October 22, 2009, 10:03:04 AM
Anyone taken a stab at creating time lapse erosion starting with a DEM? I have a project where we need to see the formation of a canyon over time.

Alternatively what other software might be up to the task?

Thanks
Ethan Summers
Title: Re: eroding DEMs
Post by: N810 on October 22, 2009, 01:16:28 PM
You could probaly do it through the erosion function...

if not you could do it with "World Machine 2" I imagine...
Title: Re: eroding DEMs
Post by: CCC on October 22, 2009, 04:27:48 PM
That would require a large-scale fluvial erosion event over a long period of time in order to carve the canyon out. Some type of large-scale value l-system noise could do it if it were available. You might get away with it using regular erosion but the erosion size would have to be not only very long but very wide, deep and tapered at there ends then the small-scale erosion can be mixed in with the canyon like smaller sediment channels and water channels for example. As far as animating it, i have yet to see how technically it is done in any software. Again you might have to grow using a branched channel noise as if the tree branches were digging there way through the terrain therefore creating the canyon time scale. Something like Houdini might do that as it has a built in l-system noise that can be animated in many ways.
Title: Re: eroding DEMs
Post by: Oshyan on October 22, 2009, 10:32:06 PM
I believe the professional version of World Machine 2 has scripting capabilities that would allow you to output sequential terrain files of an erosion process. You might then be able to use these in a series of renders to make an animation. It'd take some work though.

- Oshyan