Merge Topo Array - getting the index

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Peter Agg

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Oct 2, 2012, 6:38:13 PM10/2/12
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Hey list,

I'm trying to use ICE Modelling to combine a number of meshes so I can write a single deformer which acts on them all. I've got a group with all the meshes in so I can just plug that into the Merge Topo Array just fine. However I need to record the index of the object the verticies were created from so I can use it as an ID in the Random Value node. Anyone know of any way to doing this at the moment?


Cheers,

Pete

Julian Johnson

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Oct 3, 2012, 5:30:45 AM10/3/12
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Keep thinking there must be a better way but here's a first go (if I
understand correctly what you're doing):

http://www.exch.demon.co.uk/xsi/files/merge_topo.rar

(Some funky stuff when trying to use the Mesh_IDs and Switching Context
in the tree on the deformed object so had to use a workaround).

Julian

Ciaran Moloney

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Oct 3, 2012, 9:09:57 AM10/3/12
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Hey Julian, how did you create the MeshID attribute? I didn't see it being set anywhere...through scripting?
Here's my take on the problem. The downside is that I'm using a loop, but that's the trick that helps me find which group a mesh is in...

Ciaran 

On Wed, Oct 3, 2012 at 10:30 AM, Julian Johnson 
mergeTopoWithID.zip

Vincent Ullmann

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Oct 3, 2012, 9:28:05 AM10/3/12
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You could try something like this.... worked for me in a bigger
Compound. But sometimes XSI-Crashes, when you add new Objects to your Group.
Merged_Mesh.jpg
ICE_Tree.jpg
Compound.jpg

Julian Johnson

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Oct 3, 2012, 9:45:17 AM10/3/12
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@ Ciaran,

That's very nice! Yes, my ICE Attributes are just scripted in....

@ Vincent

I had just been looking at your earlier example this lunchtime:

https://groups.google.com/forum/#!msg/xsi_list/utMwDX74NSY/mbaghEem8VAJ

for summing vector lengths to see if it was usable here. It obviously
was. Great stuff.

Peter Agg

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Oct 3, 2012, 10:07:26 AM10/3/12
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Cheers for the examples, looks like I was on the right kind of lines. Eventually I ended up just being less lazy and applied the deformer to each mesh individually. Whilst not quite as sophisticated it meant I actually had more control anyway.

Still, a good one to know for the future.
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