Scaling individual instances to face width

Support Modeling
1

Hello,

I’m struggling to understand how geometry nodes separate instances from each other and how they can be modified individually. I’m building a room generator with geometry nodes and my approach is to extrude a shape for the room from a cube, instance a wall piece on each face and then scale the instance to fill the face.

I can only scale all the instances by the same amount. The height of the wall pieces don’t match the height of the box but this is fine for now, I only want to get the walls working.

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Below is my node setup

Any help on this is greatly appreciated.

2

This is my node setup, the site wouldn’t let me post more than one image in the post

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image2052×922 154 KB

3

This may be what you’re after - Geometry Nodes: Scaling Objects in a Collection to Fit Faces

4

Thank you @dan2! This is exactly what I was looking for. Had to tweak a few things here and there but got it working as intended.
What an involved solution for a problem that sounds pretty trivial on paper.