Hydraulic erosion in geometry nodes?

[swathi]

I was trying to get Hydraulic erosion with shortest path node and A.N.T landscape addon. But no Idea how to control the starting and endpoints. Any help?

[swathi]

I reach up to here. Now looking for a way to control the total length

[thinsoldier]

Wow! I wish I could help.

[Format64]

Here is older example with .blend available link.

[SterlingRoth]

If only that were in the fields version of geonodes… this is broken in current blender

[Strike_Digital (Andrew Stevenson)]

Hey @Format64 thanks for linking that, I actually made a couple of updated versions, one for fields, and one using the shortest path node:

• This is more physically accurate, but also has some bugs that I wasn’t able to figure out:
  Hydraulic erosion fields demo.blend (1.3 MB)
  

  

• This one is less accurate (the rivers are more all over the place), but it’s not got the same bugs, and it’s much faster to compute:
  Hydraulic erosion shortest path demo.blend (643.9 KB)
  

  

I hope it’s helpful!

[silex (Jakub Jaszewski)]

Thank you for those!

[swathi]

you just killed world machine and gaea3d. Thank you

[Strike_Digital (Andrew Stevenson)]

That’s potentially a bit optimistic, but thanks anyway

[Renzatic (Professor Emeritus Billy H. Wafflesmith XIV Esq.)]

You may not have killed them, but you did at least give them a square kick to the nuts.

[silex (Jakub Jaszewski)]

If anyone wonders why in second file out attribute is empty, you need to capture it from one node earlier: