Create PolygonIsland

[TwinSnakes007]

Does anyone know if it's possible to create a polygon island in ICE?

[Chris_TC]

What do you mean exactly? A polygon island is just a part of a mesh that's not connected to other polygons on the mesh. Of course you can create one with the standard ICE topo nodes. But maybe I misunderstood?

[TwinSnakes007]

With the DisconnectComponent operator you have the option to create Islands, how do you do that with the DisconnectComponent ICE node?

[Chris_TC]

I think you just feed it a polygon index (or a set).

[iamVFX]

With the DisconnectComponent operator you have the option to create Islands, how do you do that with the DisconnectComponent ICE node?

As an example

[P.S. Am I the only one who get IsElement attribute with Polygon cluster as an empty set? Check the scene out]

[xsisupport]

[P.S. Am I the only one who get IsElement attribute with Polygon cluster as an empty set? Check the scene out]

No, I repro that, but only in your scene. If I create a new scene, the I get a non-empty set. Will test more on Monday.

[TwinSnakes007]

Well, until this can be figured out, I'm just gonna create some custom attributes to fake it.

Edit: What iamFX posted is not an island IMO, I'm referring to a group of polygons that have a boundary edge, but are still internally connected.... a polygon island. What iamFX posted is simply limiting the polygon index numbers, and you could put any filtering calculation you want in there, but that's not creating polygon islands.

An example from the SI manual:

[xsisupport]

[xsisupport]

[P.S. Am I the only one who get IsElement attribute with Polygon cluster as an empty set? Check the scene out]

No, I repro that, but only in your scene. If I create a new scene, the I get a non-empty set. Will test more on Monday.

Something about the cluster and the modeling stack is messed up. I deleted the cluster and the ICE Tree, created a new cluster, new ICE Tree, and then it worked.

[iamVFX]

I'm referring to a group of polygons

That's possible aswell (: You need disconnect component by edges and use PolygonToEdges attributes to filter similar edge indexes in arrays...

Something about the cluster and the modeling stack is messed up. I deleted the cluster and the ICE Tree, created a new cluster, new ICE Tree, and then it worked.

Thanks, Steve! I'll keep that in mind

[TwinSnakes007]

You need disconnect component by edges

Yes! That worked perfectly. I provided a list of edges and it worked like a charm! I dont know why I didnt think of that. Duh.

Edit: Thank you guys for your help and support. This one had me stuck for a while now.

[xsisupport]

I'm referring to a group of polygons

That's possible aswell (: You need disconnect component by edges and use PolygonToEdges attributes to filter similar edge indexes in arrays...

Something about the cluster and the modeling stack is messed up. I deleted the cluster and the ICE Tree, created a new cluster, new ICE Tree, and then it worked.

Thanks, Steve! I'll keep that in mind

Here's a little more info on troubleshooting this IsElement problem.