NVil Forum

General Category => Bug Reports => Topic started by: silent_haven on December 27, 2025, 05:26:47 am

Title: Weird Normal Behavior
Post by: silent_haven on December 27, 2025, 05:26:47 am

Hi iStonia, there is a problem with harden/soften edges. Sometimes when I harden an edge, it behaves like this (screenshot), it is not fully harden and it looks weird. If I harden it again, this bug dissapears. But it is sad then you need to harden some edges twice, seems like a bug.

Title: Re: Weird Normal Behavior
Post by: IStonia on December 27, 2025, 06:38:26 am

I can't recreate the bug. Do you have steps that can recreate it?

Title: Re: Weird Normal Behavior
Post by: silent_haven on December 27, 2025, 07:04:44 am

It`s kind of random, can`t recreate. I`ll keep an eye on it. Maybe sometimes an edge doesn`t like being surrounded by other soft edges when I try to hard it

Title: Re: Weird Normal Behavior
Post by: IStonia on December 27, 2025, 07:18:45 am

Hard edge does not work if only one hard edge on a vertex. it needs to have at least two separate polygon groups around one vertex to build the hard edge effect.

Title: Re: Weird Normal Behavior
Post by: silent_haven on December 27, 2025, 07:30:02 am

Yeah, tried to recreate on a sphere and couldn`t make a hard edge. But in this case, illustrated on screenshot, hard edge can be made, but with weird look on first attempt and good look on a second. I`ll keep an eye on it and try to figure it out

Title: Re: Weird Normal Behavior
Post by: silent_haven on December 27, 2025, 11:23:42 am

Okay, I think the main problem is that with symmetry enabled, I only selected the edge on the right side of the mesh, thinking the hard edge would transfer to the other side since symmetry is enabled. However, only transformations work with symmetry enabled, not normal operations or material assignment.
It's strange why it assigns soft edges by default. I seem to have autosmooth set to 90 degrees, but it seems to work differently here than in other programs. In those programs, if you set the angle to 180-200, you get a completely smooth model, but here it's the opposite—hard.

Title: Re: Weird Normal Behavior
Post by: IStonia on December 27, 2025, 02:12:04 pm

Will fix that.

What does the autosmooth angle stand for in other programs?

Title: Re: Weird Normal Behavior
Post by: silent_haven on December 27, 2025, 02:45:20 pm

Ah, ok, seems like it is reversed in Nvil, not quite intuitive, but ok.

Title: Re: Weird Normal Behavior
Post by: silent_haven on December 27, 2025, 03:07:07 pm

However, it is quite random. I set up hard edge threshold in prefs =180, but on this surfaces some places are hard and some soft. I wasn`t tweaking anything by hand here to get various results

Title: Re: Weird Normal Behavior
Post by: silent_haven on December 27, 2025, 05:50:23 pm

And no matter what hard edge threshold is - it always make a Cap with soft edges

Title: Re: Weird Normal Behavior
Post by: IStonia on December 28, 2025, 08:01:20 am

Try this version and see if it's better.
https://digitalfossils.com/Download/NVil-Dec-27-25-Steam.zip

Title: Re: Weird Normal Behavior
Post by: silent_haven on December 28, 2025, 09:40:17 am

Thanks! I have to just replace it in Steam path?

Title: Re: Weird Normal Behavior
Post by: IStonia on December 28, 2025, 10:01:47 am

You can but you don't need to. You can just load it from where it is.