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I'm learning Geometry Nodes and I'm trying to make a procedural crater or concentric ripple mesh (like a rock being dropped in the water makes). I can use the Cone node with 0 depth along with a number of side segments to create a circle tessellated with rings. This is the base shape I need.

Now for each edge loops of the collapsed cone, I then was thinking to use a profile spline to determine the Z offset of the vertices in a concentric edge loop. There might be other/better ways.

I can't figure out how to get the edge loops, or how to figure out the vertices indices in a circular mesh. Can anybody point me in the right direction?

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  • $\begingroup$ If you put an Image in your question it will be easier to understand what you want exactly $\endgroup$ Commented Apr 14, 2023 at 12:00
  • $\begingroup$ and even better would be to provide a blend file with your test $\endgroup$
    – Chris
    Commented Apr 14, 2023 at 12:12

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Maybe you wanna start doing that by this node tree?

enter image description here

result:

enter image description here

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  • $\begingroup$ This is excellent, thank you. This is really helpful understanding an approach! $\endgroup$
    – mr.b
    Commented Apr 14, 2023 at 18:15
  • $\begingroup$ you are welcome $\endgroup$
    – Chris
    Commented Apr 15, 2023 at 8:05
  • $\begingroup$ I know this is "answered" but I'm wondering if it is possible to do something like this but with a single circle that ripples out from the center but is empty / transparent in the middle. $\endgroup$
    – Rich Morey
    Commented Apr 9 at 18:38
  • $\begingroup$ @RichMorey: please ask a new question (e.g. you can copy this question and edit it) but do not ask new questions in comments. Why not? because other people won't find questions or answers in comments and cannot learn from it. You can open as many questions as you like. Thx for your understanding. $\endgroup$
    – Chris
    Commented Apr 9 at 19:26
  • $\begingroup$ Okay, I will, thanks. $\endgroup$
    – Rich Morey
    Commented Apr 10 at 1:55

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