Problem with rendering of fonts

Recording, Visualizing and Persisting Data
1

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Geant4 Version: 11.3.2
Operating System: Ubuntu 22.04
Compiler/Version: gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
CMake Version: 3.22.1

Hello!

I have a problem with rendering of fonts on the interactive display of the detector geometry with a program that I wrote some years ago. When I run exampleB1 the fonts are rendered correctly. In both cases I use this command to open the display:

/vis/open

See the attached files below. I have compared the files vis.mac used when running the two programs and also tried to if there is something in the source code of my program that could lead to the bad font rendering, but I could not solve the problem.

Screenshot with my program:

g4sds
g4sds1027×617 13.1 KB

Screenshot with exampleB1:

exampleB1
exampleB11025×613 22.8 KB

Johan

2

Hello!

I found that this command in vis.mac leads to the bad rendering of the fonts:

/vis/viewer/set/edge true

For now, I will just skip that command. If someone knows how to get good font rendering with that command, please let me know.

Johan

3

Hi Johan

You do seem to have found a bug in the OpenGL viewer. Thanks, we will look into it.

Please try the ToolsSG viewer, /vis/open TSG. I think you will find it more reliable for edges and text.

John

4

Hi John!

Thanks for your reply and sorry for my late reply. I tried TSG and it renders the fonts correctly with the command ‘/vis/viewer/set/edge true’.

Johan

5

Ok, Great! Thanks fro getting back.

We are planning to transition to TSG as the default viewer from the next release, so your feedback is very useful. Thank you.

John