AC25 Guide Lines turn invisible

[roderick]

Hi all, wondering if anyone is having a similar problem.  I'm using Archicad 25 SPA, and specifically on an Apple iMac with a 5K screen if I draw any guide line in an orthogonal direction (pure horizontal or pure vertical) they appear as they normally should, in the dashed orange color.  However, if I draw any guideline in any angle they turn invisible.  In reality, they turn kind of white, so they are not visible against a white background.  The interesting part is that the guide lines are there, so If I change the background color on the screen, they appear, but in a different color, they show kind of pink or light violet.

What's even stranger is that this happens only specifically on the 5K iMac.  I tested the same thing on a 2020 MacBook Pro and the guide line behavior is normal, where any guideline at any angle shows in the normal orange dashed line.  I then tested again on a PC computer and also the correct behavior.  I had one of our staff architects test on her 5K iMac (slightly older model) and the behavior is also normal.

I then proceeded to uninstall Archicad and do a fresh install, but the behavior is still the same on my particular 5K iMac.

I've come across Archicad bugs before, but this is downright weird !

Example with white background:

EXAMPLE WITH DARK BACKGROUND

[roderick]

@Laszlo Nagy  here is a mystery for you.

[Laszlo Nagy · Accepted solution]

Have you tried updating your graphics card drivers?

You could also go to the "Advanced Redraw Options" page of the "Work Environment" Dialog, and check  whether changing the state of the "2D Drawing Antialiasing" checkbox  or the "2D Drawing hardware Acceleration" slider change anything. These are setting that can influence Floor Plan Display.

[Narska]

I’m experiencing the same problem.

[roderick]

Hi Laszlo, good observation.  My results:

1. Unchecking the "no antialiasing for horizontal and vertical lines" then makes ALL guidelines "not visible" - i.e. they turn white or very light color that is not visible.  If I then change the window background to a dark color, then ALL guidelines look pink.
2. Unchecking the "Antialiasing for 2D drawing" entirely then corrects the problem, and then all guidelines appear in the correct orange color.
3. Moving the hardware acceleration slider to the middle option (keeping antialising on) keeps the slanted guidelines in the light color, however for some reason they become more visible if you use a slightly colored background (like a light sand color).
4. Moving the hardware acceleration slider to the middle option (keeping antialising on) then turns ALL guidelines to the correct, orange color.

For now, my solution will be to keep 2D antialising OFF and keep hardware acceleration ON. 

Since I'm on a Mac computer, I can't update graphics drivers, but my system is current to the latest OS update, so this should have the latest graphics drivers updates.

Thanks for the idea, at least this gives a solution for now... but this seems to be a bug specifically related to iMac 5K systems.

[Laszlo Nagy]

I am glad that unchecking the "Antialiasing for 2D drawing" checkbox corrects the problem.

I will report this to Graphisoft.