Model angle tolerance message

Has it ever been figured out why, after a whikle of usage, Rhino starts giving this message with every window change?

0.01 for an angle tolerance seems excessively fine and may cause calculation issues.
Why is your angle tolerance set so small? I think the default is 1 degree.
As a test, what happens if you go into File > Settings > Units, and set your angle tolerance to 0.1 or 1.0 degrees?
Does the message go away? Can you detect any issues as a result?

I’ve never changed the angle tolerance setting in all my years of using Rhino.

The issue does not appear when I start rhino. I have to use it a while before this becomes an issues. Next time I see this I’ll try setting it larger.

Interesting. Normally, that setting is populated when a template file is used to start a new file.
It certainly is possible to change the angle tolerance setting later. It would be interesting to figure out what is changing it.
Cheers for now…

The answer is, if I set the angle tolerance to 0.1, I still get the messages saying thay Rhino is reseting it to 0.01 once the messages start to appear.

Okay. Once those messages start, is the angle tolerance reset to a 0.01 or is it still 1.0?
Assuming it is small, then the trick will be to figure out the operation that happened just before the reset messages started. That should be a clue as to the actual cause.

One the messages start, the tolerance is 1. So it’s not actually resetting it to 0.01.

That might indicate the setting in the error message is not the same setting controlled by the Units page file setting.
This is going to require a Rhino developer to chase it down.
@stevebaer, @Gijs ?
I don’t know who the right developer is for this issue anymore.

I know that message but I have never run into a case where this would pop up automatically.

Did this start happening recently? It sounds like you’ve been dealing with this for long.

If you have a customized Rhino setup it might be worth running reset and restoring the defaults (Rhino will backup the settings) and then test this for a while.

I have it a long time. I started with some major version of Rhino. I’ve reported it before.

I was just reading back your earlier reports, but it seems there is no other report of it, nor anyone that can reproduce this behavior.
If you run _Reset and click Save settings for support button, then send the resulting zip to me in a pm I’m happy to give it a try if I can reproduce.
Better would be to reset your settings and see if you can still reproduce it with the defaults.

This is an old bug that started in V8 WIP and there should be some reports of it. I have seen it myself at the very beginning of V8. I thought it had been fixed a long time ago though.

Mine is set to this because of it I think:

Resetting it to 0.01 does not produce the bug here though. I’m not sure why the tolerance is that fine either, 0.1 should be OK, but my custom initial mm template is set that way for some reason. The default value of 1° is WAY too large for today’s modeling, I have lobbied for a change for long time. 1° angle tolerance means one considers angles of up to 1° as still “officially” tangent.

yes, that’s RH-78037 Options: File angle tolerance set to 0.01 gives an incorrect popup warning

But in this case the tolerance is not set to 0.01 or lower and still popping this message

Seems somehow related though…