[Request] Edge loop Selection

[Request] Edge loop Selection

Postby ken28875 » Mon Mar 15, 2010 10:52 pm

Hi there,

Does anyone know if there is a plugin that will allow me to select edges that loop around the model?

Thanks!

_KN

1 - select one edge


2-apply plugin and the edge loop is selected
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Last edited by ken28875 on Mon Mar 15, 2010 11:43 pm, edited 1 time in total.
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Re: [Request] Edge loop delection

Postby TIG » Mon Mar 15, 2010 10:57 pm

I think thomthom's select toy script has something like this...
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Re: [Request] Edge loop delection

Postby mitcorb » Mon Mar 15, 2010 11:07 pm

Man, I've been wanting this like forever. And, based on your examples, it would not seem to be hard to do. But, in the case of your illustrations, which are very regular and isolated in the model space, what I do is navigate to a position where I can do a selection box around one of the loops as you show.

I suggested this in a post about a year ago, and I believe it was deemed too complicated, or required hacking the core program, or whatever. As you may know, other programs such as Blender, Maya have this capability. But these programs are based on a different modeling philosophy. Whereas, SU is a surface modeler, these others are solid, or box modelers and they treat vertexes as operable entities, meaning you can copy, move, highlight, extrude them as you would edges and faces. I don't know if the vertex thing has anything to do the limitation. I just thought I would throw that in.
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Re: [Request] Edge loop delection

Postby mitcorb » Mon Mar 15, 2010 11:13 pm

TIG:
Last time I looked, ThomThom's Selection Toys only selected face loops, that is loops composed of faces, not loops composed of edges. I do think his tools will select edge loops totally contained within a face.

Anyway, a girding edge loop would allow quick selection and you could scale it, move it copy it and so forth.

Soon as somebody figures it out, the next step would be loop subdivide like Blender has.


By the way, would the topic title need to be edited? From "delection" to "selection"?
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Re: [Request] Edge loop delection

Postby thomthom » Mon Mar 15, 2010 11:28 pm

I've seen this request a number of time - but I wonder do people have such clean geometry that it actually works. These other 3D apps to which people refer to usually allow for non-coplanar quads. While SU doesn't do this - significantly decreasing the usability for such a selection feature. The geometry need to be regular in its construction in order to determine the direction of the next edge to select.
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Re: [Request] Edge loop Selection

Postby Jim » Mon Mar 15, 2010 11:45 pm

Probably a gross over-simplification, but can't you grab the next connected edge whose angle between the current edge is less than a specified angle?

As you say, regular geometry is required. It would not work so well on sub-divided mesh.
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Re: [Request] Edge loop Selection

Postby ken28875 » Mon Mar 15, 2010 11:47 pm

Hi TIG,

You're correct, "ThomThom's Selection Toys only selected face loops, that is loops composed of faces".

Hopefully someone will manage to figure out a script for that plugin.

Thanks,

_KN
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Re: [Request] Edge loop Selection

Postby ken28875 » Mon Mar 15, 2010 11:50 pm

ken28875 wrote:Hi TIG,

You're correct, "ThomThom's Selection Toys only selected face loops, that is loops composed of faces".



Oops, I meant to reply to mitcorb, not TIG. :)
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Re: [Request] Edge loop Selection

Postby TIG » Tue Mar 16, 2010 10:40 am

It's pretty easy to switch to wire-frame or Xray mode and position your camera to view 'side on' and then use select by fence with left-right drag so only things that are wholly inside the fence get picked [as opposed to right-left drag fence making which selects everything that has just a part of itself inside the fence]
Voila! you have the loops edges selected in 'one foul swoop'.
If you do select something that's not wanted then remove it from the selection-set by holding down shift+ctrl and re-picking it... :?: :idea:
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Re: [Request] Edge loop Selection

Postby EarthMover » Tue Mar 16, 2010 1:06 pm

Fredo's Hover Select has an option to "Extend selection to cofacial and aligned edges". It works to do a loop select on clean quads. Another option would be a script that I think Jim or TIG helped me with a while back called Select Edges by Z. You can pick an edge and run the script and it will pick all other edges on that Z coordinate.
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Re: [Request] Edge loop Selection

Postby ken28875 » Tue Mar 16, 2010 4:39 pm

TIG wrote:It's pretty easy to switch to wire-frame or Xray mode and position your camera to view 'side on' and then use select by fence with left-right drag so only things that are wholly inside the fence get picked [as opposed to right-left drag fence making which selects everything that has just a part of itself inside the fence]
Voila! you have the loops edges selected in 'one foul swoop'.
If you do select something that's not wanted then remove it from the selection-set by holding down shift+ctrl and re-picking it... :?: :idea:


Hi TIG,

Yes, that's a method I use sometimes, but it works on simple shape like the example I showed or on model with a few details. I was hoping for a plugin that will quickly help select edge loops on complex models.

Thanks though.

Have a great day! :enlight:

_KN
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Re: [Request] Edge loop Selection

Postby ken28875 » Tue Mar 16, 2010 4:42 pm

EarthMover wrote:Fredo's Hover Select has an option to "Extend selection to cofacial and aligned edges". It works to do a loop select on clean quads. Another option would be a script that I think Jim or TIG helped me with a while back called Select Edges by Z. You can pick an edge and run the script and it will pick all other edges on that Z coordinate.


Hey Adam,

Thanks for the tips. I tried it but did not work so well as my model is quite complex and has lots of details.

Take care,

_KN
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Re: [Request] Edge loop Selection

Postby blindcop » Thu May 07, 2015 2:16 pm

I know this is an old post to bump, but in case someone finds it my new plugin was written to do this exactly:

viewtopic.php?f=323&t=61884
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Re: [Request] Edge loop Selection

Postby josephkim626 » Mon Sep 21, 2015 9:55 am

EarthMover wrote:Fredo's Hover Select has an option to "Extend selection to cofacial and aligned edges". It works to do a loop select on clean quads. Another option would be a script that I think Jim or TIG helped me with a while back called Select Edges by Z. You can pick an edge and run the script and it will pick all other edges on that Z coordinate.



Thanks for the extension that you have included.
would it be possible to tweak it to just include "connected edges"?
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Re: [Request] Edge loop Selection

Postby 5k18a » Mon Apr 09, 2018 9:19 am

Any one know what plugin is it from this video https://www.youtube.com/watch?v=bA4tGgOFQJQ&t=553s It's great for selecting edges in a loop.
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Re: [Request] Edge loop Selection

Postby Rich O Brien » Mon Apr 09, 2018 11:05 am

SketchUV and Profile Builder have this tool
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Re: [Request] Edge loop Selection

Postby cengizileten » Tue Apr 24, 2018 11:39 am

On the quadface tools, there is select loop button.
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