Geometry Nodes: Instance on Points - How to omit a vertex group

Question

I have a simple geo-node array that instances a mesh on the points of my mesh. Object -> Instance on Points -> Translate Instances -> Group Output.

How might I tell this array to omit any vertices found in a given vertex group?

Thanks in advance.

This thread is supposed to address it. But I can't actually divine a solution to my problem within it.

In this array, I just know that I need to put Delete Geometry some place and then plug my vertex group to effectively mask them out.

alambre · Accepted Answer · 2022-02-20 05:02:22Z

5

connect 'Selection' in your 'Instances on Points' node to an empty socket in your 'Group Input' node
check under the modifiers panel you now have a numeric field with a 'spreadsheet' icon, be sure to CLICK that ICON and then type your vertex group name
that should do it, maybe add a Boolean Math if you need to reverse selection

answered Feb 20, 2022 at 1:24

alambre

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$\begingroup$ GOT IT! Thanks so much. The key bit was to remember to CLICK on the Boolean symbol. If you just enter the string in (as I have repeatedly been doing), it basically thinks you are putting text in a number field. But if you click the button, that must change the field state or something. $\endgroup$
– DocBadwrench
Commented Feb 20, 2022 at 4:46
1

$\begingroup$ yes that happened to me too, it's not so obvious and also not something you see in other places... will edit answer $\endgroup$
– alambre
Commented Feb 20, 2022 at 5:00

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