Forums Technical Discussion Keep only looping edges

Keep only looping edges

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Lewul
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Hi everyone,

I'm stuck on something that looks so simple… I have this mesh, which is made with a lot of looping edges, and my goal is to only keep these edges (I don't want the one that goes on the Y axis, but don't refer to that axis because I have some mesh that are not oriented this way).

Do you have a simple solution ?

Thanks,

Tom.

Attachments:
ExtractLoopEdges.rar (14.7 KB)
edgeLoop.png (107.6 KB)

https://vimeo.com/obreadytom [vimeo.com]
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AdamT
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Hi Tom,

(Edge) Dissolve SOP will do the trick…

Example attached.

Tricky part is getting the edges to dissolve, but edge group options can take care of a lot of cases (and Carve to extract the cross sections sans primitives)

Attachments:
edge_dissolve.hip (63.6 KB)

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Lewul
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Nice ! Thanks Adam.

One more question, it's seems that the points are not connected anymore… For example with a Connectivity SOP they are all independent from each other. How can I correct it ? I need each circle to be one geometry.
https://vimeo.com/obreadytom [vimeo.com]
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AdamT
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Happy to help.

Fuse SOP will consolidate the points.
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Anonymous
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Use two ConvertSOPs.

First one:
Convert To - set to NURBS Surface
Connectivity - set to Rows
V Order - set to 2

Second one:
Convert To - set to Polygons
Connectivity - set to Rows
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AdamT
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Yeah the convert approach is nicer. *screwy face*
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Lewul
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Ah, got it !

Unfortunately, this was nos working for both of your solutions on my geometry (maybe it works on Adam's one). I converted it into a NURBS Curve, and then fused it (the fuse was not working at all until my geo was converted).

Thanks !

EDIT : working only with the fuse now, strange
https://vimeo.com/obreadytom [vimeo.com]
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Anonymous
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I tested this on your geometry. Didn't even looked at AdamT file.
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Lewul
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My file is actually a entire tree, and each branch is in a ForEach SOP, maybe it's coming from here (I gave you only one branch).
https://vimeo.com/obreadytom [vimeo.com]
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