Access Topology Like a Pro with Blender's New Mesh Topology Nodes 

Happy to help!

Glad you like them!

Thanks, I knew it was a little harder way to do this, but I figured it was a good way to show the nodes.

@@JohnnyMatthews It works for n-gons tho, so it’s better.

@@JohnnyMatthews harder but more powerful too 🤯

Glad it was helpful. These topology nodes can be a little tricky.

Thanks Sanctus!

Yeah, that’s on my list.

That's the plan!

Thanks!

amen brother

🤣🤣🤣

I submitted a patch for a 'grouped statistics' node that would do your topmost edge case. But it has been languishing for a long time.

Thanks! Glad you liked it. I’m not sure about your question, I’ve not looked into that yet.

Thank you! I'm glad you liked it :)

I was hoping it would be helpful

Used Edit Mode in the 3D Viewport, probably the Knife Tool. Geometry Nodes were not involved.

You could use a scene time node to delete geometry based on a selection of face index(s) that are less than the scene time and use a multiply to control the rate.

Not sure I follow your request.

@@JohnnyMatthews 😊it's ok❤

You’re welcome!

That’s probably because the vertex position and edge corner position are the same. I guess if there was other data that was only on the vertex it might make a difference.

Well, I added them to a node tree and viewed the results in the spreadsheet view. Then just kind of worked backwards from there. Although since I do know how mesh data is stored under the hood of Blender, it may have influenced my understanding.

In 3.5 the 'Field at Index' node appears to be called 'Evaluate at Index' if that helps. The 3.5 documentation uses both names which is confusing.

It is complex to be sure. These nodes are pretty Low level. As more complex nodes are shared as assets and even included in some default asset packs it will be more beginner friendly.

Have been learning GN for well over a year and yes, this is not a beginner tutorial by any stretch. Blender devs have exposed these low-level nodes so that the community can build exactly what they want from them and I think this is the right approach. But there are far simpler GN setups that will get you used to the workflow before diving in to this kind of stuff.

@@JohnnyMatthews This is also my thinking. I know I sound a bit on the negative side, but I'm just pointing legitimate issues out. Worst thing that can happen to a new user is to try to jump in immediately and not be able to get anything accomplished...thus pushing them to use other software.

​@@nowherebrain I'm a beginner. While I've had Blender installed for over a decade, and have been watching tutorials on a variety of subjects for a couple of years, I only actually started touching it recently (and went straight to alpha versions. I know, I'm crazy). I'm not particularly great with maths and logic. While perhaps not standard, my point of view is a bit different to yours. I'm getting into geometry nodes knowing I'm jumping in at the deep end of a more advanced workflow. While you obviously don't want every tool in a given software to be complicated, I don't think every tool needs to be aimed at the beginner. And this a tool that is still in its infancy, with things constantly being reworked (the "old transfer attribute node" Johnny mentions is only old for 3.4, and is still in the current stable release, for example*). We're basically seeing the frontier of geometry nodes, wild and dangerous where anything can happen. As it matures and the low-level node base has become more settled, more beginner friendly workflows will arise. But it takes time, and real world use of the low-level nodes to get there, which is the stage we are at. * speaking of transfer attribute, @Johnny Matthews is there a video somewhere covering everything this node has been split up into in 3.4?

@@nowherebrain You can do a ton of basic stuff fairly easily with geometry nodes without needing to know a lot of math or the underlying data structures. Those are the nodes Blender devs introduced first, for the most part. Recently they've been adding more advanced nodes that do require a deeper understanding of math and data structures to understand and use. But don't let the recent additions scare you off. There's tons of cool stuff you can do without touching any of them. A good place to start might just be some basic scattering. You can use it as a replacement for a lot of the old particle system, but what you can do with it is so much more, and I find it a lot easier to work with. You can do a lot of neat stuff with curves too, without a ton of complicated node trees.

These are low level nodes to be sure. One thing is getting the corners of a face in loop order. This information is otherwise inaccessible.

Yeah, that one was a little rough.

Awesome, more to come!

Doing my best!

I hope so. Gonna see some crazy stuff this year.

I’m sure you could make that work.

@@JohnnyMatthews Cool. Good to know Im not mad. Im just trying to find a reason where I would use this instead. It would be really cool if you could select the corners of a mesh but only if the angle of the edges coming off it was a value you could input (so you would only select the Index of say the corners of a subdivided mesh). Thanks so much for the quick reply, really appreciated.

@@JohnnyMatthews Just had a play. Should have realised that the scale node will scale everything equally so this will only work for square panels. Might have to rething that one then so your method seems cleaner. 👍

Glad you enjoyed it!

Aww thanks 😊

Go make something awesome!

Yeah not ones you will need every day, but essential when you do.