### Keep only looping edges

2946   8   0
Member
250 posts
Joined: 2月 2013
Offline
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)

Member
184 posts
Joined: 6月 2010
Offline
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)

Member
250 posts
Joined: 2月 2013
Offline

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.
Member
184 posts
Joined: 6月 2010
Offline
Happy to help.

Fuse SOP will consolidate the points.
Member
678 posts
Joined: 7月 2005
Offline
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
Member
184 posts
Joined: 6月 2010
Offline
Yeah the convert approach is nicer. *screwy face*
Member
250 posts
Joined: 2月 2013
Offline
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
Member
678 posts
Joined: 7月 2005
Offline
I tested this on your geometry. Didn't even looked at AdamT file.
Member
250 posts
Joined: 2月 2013
Offline
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).