How to grow and shrink selection procedurally?

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Hi guys,

I am Houdini newbie here and trying to get similar to group nodes.

I have a grid and I wanted to get the border polygons. I am able to do that with the “unshared edges” option in the group create node. Now I want to grow this selection similar to how I would do Shift + G to grow by the adjacent faces. Is it possible to do with this the group nodes?

Is this something I have to drop into VEX to accomplish or is there an easier way?

Thanks,
Numna
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One way I know you can do it without VEX only works with point groups. After you created your initial group, add a second Group node, check Include by Edges, enter your existing group in Point Group and increase Edge Depth as needed. You can then promote your group to Primitives.
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are you looking for this behavior perhaps ?
https://www.sidefx.com/tutorials/houdini-game-dev-tools-procedural-edge-loopsgroup-expandcontract/ [www.sidefx.com]

if so, you'll find the node in the game dev toolset
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Andr
are you looking for this behavior perhaps ?
https://www.sidefx.com/tutorials/houdini-game-dev-tools-procedural-edge-loopsgroup-expandcontract/ [www.sidefx.com]

if so, you'll find the node in the game dev toolset


This looks great. Surprised this is an add on and not built in houdini.
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Tanto
One way I know you can do it without VEX only works with point groups. After you created your initial group, add a second Group node, check Include by Edges, enter your existing group in Point Group and increase Edge Depth as needed. You can then promote your group to Primitives.

Worked like a charm. Thanks!
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