SubD Ring and Loop Selection is Really Bad

[ShynnSup]

Specifically talking about edges, I struggled daily and loose a lot of time selecting my edges one by one because the tool is just not smart enough.

Expected:

Result:

Expected:

Result:

I often let these go even though my mind tells me it should be possible to code this, but I am not a developer so I let it go.

It really grind my gears when I realize other software does it ok and confirms to me it could be this way also in Rhino.

This was done with only 4 clicks in C4D. Notice how the holes and naked edges do not break the continuity of the rings and loops.

[CADARTZ]

Tried filter selection? I find it quite useful when I made the skull

[xkdsofa]

011.3dm (238.0 KB)

[ShynnSup]

Hi, not sure what you are trying to tell me here.

The ring and loop selection just does not select the way it should.

[Vanessa (Vanessa Steeg)]

Hi Shynn - The current edge loop selection is indeed odd, when there’s an open face involved. In the example you posted right above, I’m not sure the correct answer is to select the open edge as part of that loop selection, however, it definitely should not select the “vertical” edges, when sub-object selecting the circular loop. I’ve logged it ( RH-84736).

[ShynnSup]

Thank you Vanessa.

@Vanessa

I’m not sure the correct answer is to select the open edge as part of that loop selection

I think most often than not you want selection to keep the rings and loops despite open faces.

For instance here, this is happening because the selection is not differentiating between loop and ring.

Also here you want to select the entire vertical edges despite open faces.

[Vanessa (Vanessa Steeg)]

Thanks @ShynnSup ! That makes sense. I’ve added your comments to the bug report.

[Tom_P]

Please see my wish for a smarter SelChain command here:

(WISH) smarter SelChain

[Screenshot 2024-11-13 at 22.58.31] I have a small but important wish regarding the options of _selChain - mainly the angle options: current behaviour: as soon as there is more then one choice, that is below the angular threshold, rhino does not follow the chain but pops up with a selection dialog. wished behaviour there should be an (1) “automatic best choice” option: if there is more then one choice within the threshold (angular / distance / curvature) then the best fitting / lowest deviat…

[brian (Brian Gillespie)]

RH-84736 is fixed in Rhino 8 Service Release 15

[Vanessa (Vanessa Steeg)]

Hi @ShynnSup - As Brian mentioned above, some changes have been made to address this in in V8 SR15.

The behavior differs depending on if you’re sub-object selecting in Smooth or Box mode. Smooth mode doesn’t make the distinction between the distinction between horizontal and vertical edges. If you switch to Box mode, it will

As for internal open loops, Smooth will SO select the whole opening while in Box mode, you’ll only select the vertical or horizontal open edge. You’ll also be able to select a whole chain of internal edges, even if there’s an open edge along the way while in Box mode

I hope this helps!