Hey Sassi
This is great! I forgot that you can add fields in selection tags...It is a bit hard to make it precise though, I find it very "on/off". I will play around with it a bit more, but this is a great approach, thank you very much!

Hello Sassi, I've been playing around with that approach, and it does work. Not exactly the way you set it up, but see my file. I think I'm still curious to know if there is any object or field or vertex map I could use to have a more interactive (rather than numeric) approach to making these selections, as turning the Polygon indices on and off is a bit tedious, but this approach does work!
https://www.dropbox.com/scl/fi/s6w39calhdfb7e6dl08rr/WallNodeExtrude.c4d?rlkey=7lv3wolegr75ikb00ygqervtm&dl=0

Thank you!

Hello
I've been teaching myself scene nodes, and have been trying to do some simple stuff with parametric objects and selections.
One of the things that I find quite frustrating is that I haven't been able to figure out how to make selections based on a "region"
What I'm trying to do is
1/Select a few polygons (I can easily do this with the multiple selection tools by just entering their indices)
2/Apply a subdivision
3/Apply an extrusion to just that set of subdivided polygons

Between step 2 and 3 of course my selection no longer works as the indices have changed.

Is there a way to create something like a bounding box or a field that would "contain" any polygons within it, and make that a selection? That way I could subdivide and extrude in sequence without having to create a new selection?

Thank you!

Fantastic! Thank you Sassi! This is perfect for my project
All the best!

Hey Sassi, thank you! So simple and elegant!
It seems like the key is figuring out the IOR on the reflective material? Would it be possible to build something like this with 3 images rather than just 2?

Thanks again, really great setup

Hello
I don't have a project file for this as I have no idea how I would even start...I'm trying to replicate the effect of a Lenticular film

You see this in postcards or prints some times, when you look at it from one angle you have one image, but from another angle you have another image, with a "fading" transition between the two.

I'm assuming this would have to have to be a shader effect based on camera angle?

Thanks!

Hey Sassi, thank you! I missed this. Super clear explanation. I was thinking I could find the curve via the arc settings, but obviously it is not a perfect curve and your method makes perfect sense.

Thank you again!

Thank you Sassi, this is incredible. And extremely useful! May I ask how you managed to get the exact shape of the truss curves? This is what I was getting stuck on...did you use the blueprint as a background to extrapolate from?

Again, thank you so much

Hello

I'm trying to model this opera tent for a project, but I'm getting stuck because it feels like the dimensions are not equal across the curves.
I'm trying to use arcs to generate the two facing truss structure that are composing the main "shell" (I don't need to create the covering, just the structure).
Is there a way to extrapolate the actual curve from these measurements?

Here is the project I started
https://www.dropbox.com/scl/fi/wl78tb0g3szrab8h4q887/OperaTent.c4d?rlkey=ksa9tyl7llnll089bd6km8ln0&dl=0

And here is my document with measurements and drawings.
https://www.dropbox.com/scl/fi/prrueqrb3lo3u5ogps7h9/1_ZSB_Opera-Tent_18X21-Single_Grundma-e.pdf?rlkey=xv341fquqdmcsutqmjp22teqg&dl=0

Thanks for any advice!

Amazing! Thank you Sassi!!