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Kenji
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First time asking a question here ! woo. I've tried to look for an answer.. I must be missing something very basic. I started using Geometry nodes a few days ago (finally)

I'm trying to scatters stuff on instances by vertex group located on those instances

So we have those "building01" and "antenna01" objects

I scattered building01 using a vertex group on the ground plan then random rotation, all good. Now, i want to scatter those antennas on the top of those building01 instances. On the building01 object i defined a vertex group called "roof"

  • First i tried to make it all with one geometry node but i cannot access the "roof" vertex group. -I tried to stack TWO geometry nodes modifiers (one for the first scatter of building01 and a second one for antenna01). But that just... don't work. -I tried to make a geometry node for the building01 object, i can scatter antenna01 but just like shown on my screen capture all the instances are identical. Which of course makes sense...
  • Realize instances doesn't help because i can't access the vertex group on building01 anyway :(

That's it.. actually.

This is a very simple example but then i could have complex buildings bases and scatter/display stuff on them using vertex groups. like antennas on roof , pipes on wall, etc.

Thank you everyone

Blend file :

First time asking a question here ! woo. I've tried to look for an answer.. I must be missing something very basic. I started using Geometry nodes a few days ago (finally)

I'm trying to scatters stuff on instances by vertex group located on those instances

So we have those "building01" and "antenna01" objects

I scattered building01 using a vertex group on the ground plan then random rotation, all good. Now, i want to scatter those antennas on the top of those building01 instances. On the building01 object i defined a vertex group called "roof"

  • First i tried to make it all with one geometry node but i cannot access the "roof" vertex group. -I tried to stack TWO geometry nodes modifiers (one for the first scatter of building01 and a second one for antenna01). But that just... don't work. -I tried to make a geometry node for the building01 object, i can scatter antenna01 but just like shown on my screen capture all the instances are identical. Which of course makes sense...
  • Realize instances doesn't help because i can't access the vertex group on building01 anyway :(

That's it.. actually.

This is a very simple example but then i could have complex buildings bases and scatter/display stuff on them using vertex groups. like antennas on roof , pipes on wall, etc.

Thank you everyone

First time asking a question here ! woo. I've tried to look for an answer.. I must be missing something very basic. I started using Geometry nodes a few days ago (finally)

I'm trying to scatters stuff on instances by vertex group located on those instances

So we have those "building01" and "antenna01" objects

I scattered building01 using a vertex group on the ground plan then random rotation, all good. Now, i want to scatter those antennas on the top of those building01 instances. On the building01 object i defined a vertex group called "roof"

  • First i tried to make it all with one geometry node but i cannot access the "roof" vertex group. -I tried to stack TWO geometry nodes modifiers (one for the first scatter of building01 and a second one for antenna01). But that just... don't work. -I tried to make a geometry node for the building01 object, i can scatter antenna01 but just like shown on my screen capture all the instances are identical. Which of course makes sense...
  • Realize instances doesn't help because i can't access the vertex group on building01 anyway :(

That's it.. actually.

This is a very simple example but then i could have complex buildings bases and scatter/display stuff on them using vertex groups. like antennas on roof , pipes on wall, etc.

Thank you everyone

Blend file :

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Chris
Chris
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Kenji
Kenji
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Geometry Nodes - Scattering inside a scattered object (using vertex groups)

First time asking a question here ! woo. I've tried to look for an answer.. I must be missing something very basic. I started using Geometry nodes a few days ago (finally)

I'm trying to scatters stuff on instances by vertex group located on those instances

So we have those "building01" and "antenna01" objects

I scattered building01 using a vertex group on the ground plan then random rotation, all good. Now, i want to scatter those antennas on the top of those building01 instances. On the building01 object i defined a vertex group called "roof"

  • First i tried to make it all with one geometry node but i cannot access the "roof" vertex group. -I tried to stack TWO geometry nodes modifiers (one for the first scatter of building01 and a second one for antenna01). But that just... don't work. -I tried to make a geometry node for the building01 object, i can scatter antenna01 but just like shown on my screen capture all the instances are identical. Which of course makes sense...
  • Realize instances doesn't help because i can't access the vertex group on building01 anyway :(

That's it.. actually.

This is a very simple example but then i could have complex buildings bases and scatter/display stuff on them using vertex groups. like antennas on roof , pipes on wall, etc.

Thank you everyone