Few weeks lurker, first time poster here. I’ve been a 3D artist for a few years now, and recently took the full plunge into blenders depths. Im coming mainly from a 3DsMax background where I really enjoyed the modifier stack. Geometry nodes have been a great way for me to adapt and even improve my worklows in comparison.
One of those cases would be creating curve to mesh with a profile that has straightened corners.
I found this Geometry Nodes Poligonal Path Extrusion - Blender Tutorial by Maurizio Bella and was really happy with my result initially. But it seems to fall apart as soon as a curve object has multiple seperate spline elements in it.
As far as I understand it, this setup will apply the profile scaling on every point index with the exception of the lowest / highest index as long as the spline is not cyclic. If the spline is cyclic it will apply to them aswell. Soooooo, I think the problem then is that does not account for a a new start/end point of a spline somewhere in between the first and last index.
I have been trying to find a work around for this issue but I cant quite seem to get to the solution. My first two attempts involved refining the boolean for the set position node or using a spline index parameter instead of a global index, but both failed.
My latest attempt, was to narrow down the index with using the spline ID. So the min/max index for the tool to work of would be the lowest/highest index on the spline segment and not the global index. This works now if I specify the spline ID though an input, but not for the whole curve
So I was hoping that someone here might have an answer. I feel like Im really close but just cant seem to get there. I’d be overjoyed if one of you could help me out!
Ah yeah,
I’ll give that a try! Thank you for forwarding this!
Maybe I can just look through the graph aswell and see how the approach is. I do still wonder though, if there is just a small tweak that could be done to my existing graph to make it work. For the learning experience I mean
Allright it looks like I was able to figure this out thanks to both of you!
The solution ended up being twofold.
Thanks to @Hadriscus I refined my boolean selection to exclude only the open endpoints. And then I also looked at the thread and existing node group @DNorman suggested and ended up seeing a bunch of nodes in there that I had completely missed before.
I do also get that glitchiness on the spline with free/ automatic handles in my setup. Its actually even more distorted on mine, but I tihnk I can live with that. Dont think I really need the even thickness feature for those very organic shaped splines anyway.
Attaching the updated version here aswell for anyone who is interested to compare and contrast.
