Strange behavior with native Tape Tool and Construction Lines

Hello,

I am encountering a strange behavior when I try to draw a construction line parallel to a construction line that is in a subgroup.
It seems the tool does not properly taking into account the transformation of the group.

Is this a problem you are also experiencing?

This seems normal to me. Guidelines are oriented to the world/model axes and guides inside of groups and components are aligned the group or component axes. So editing context controls the inferencing.

Except the guide isn’t parallel to the global axes either.

guides

BTW, this isn’t a new thing. It’s been like this for as long as I can remember.

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Just noticed this… that is f’d up and I think a bug - because it does not draw with the world axis or the group axis:

If I reference a line in the group (when outside of the group) - things work as expected.

But if I reference the guideline… it is pretty weird.

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Yes, in my example, it seems to apply the rotation twice.

Yes, same issue with SketchUp 2017 :old_man:t2:

Yes, that’s why I’m also thinking it’s a bug.

Enregistrement de l’écran 2026-01-06 à 15.06.14-GIF 720x720 15 ips

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But aren’t the angles between guidelines from inside and outside of the group 45, 135, 45, 135? Meaning the guideline inferenced from outside of the nested guideline is 45 or 135 degrees ‘off’?

The issue occurs with any angle.


It is the same rotation as the rotation of the object.

45 Is just an example. If you draw 4 guidelines, you’ll have a ‘diamond’ shape the angles = 360.

@TedVitale_SU This is likely an unintentional bug.

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Hey! It looks like you’re wanting to create guidelines from existing guidelines in the same way that you can create a guideline from an edge. Is that accurate? I believe the current functionality is that guidelines are oriented to the world axis on creation, but I’m seeing something different happening in a test version, so let me look into it. Thanks for posting about it!

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I can only recreate the bug in 26.1.1 when the guideline is within a rotated group context.

If the rotated guideline is at the model’s top-level, then there is no problem.

Yes it is. Otherwise, what would the distance to be entered correspond to if the two lines do not have a remarkable alignment with each other?