Forward hcal and insert can't be visualized properly

[veprbl]

Environment: (where does this bug occur, have you tried other environments)

• Which branch (main for latest released): main
• Which revision (HEAD for the most recent):
• Any specific OS or system where the issue occurs?
• Any special versions of ROOT or Geant4?

Steps to reproduce: (give a step by step account of how to trigger the bug)

1. Try to display at the insert geometry geometry

Expected Result: (what do you expect when you execute the steps above)

Actual Result: (what do you get when you execute the steps above)

This may have to do with incorrect handling of volume subtraction in TGeo visualizer

[veprbl]

cc @rymilton

[rymilton]

Can you elaborate on this? I can't reproduce this when displaying the current geometry using dd_web_display --export $DETECTOR_PATH/epic_full.xml.

[veprbl]

The screenshots were kindly provided by @FriederikeBock . ROOTJS may actually be able to draw those volumes properly. Perhaps, this is an issue when using geoDisplay.

[rymilton]

Could you please give me the exact command used to generate these visualizations?

[rymilton]

By the way, the LFHCAL visualization isn't working with dd_web_display. For instance, with dd_web_display --export /opt/detector/epic-nightly/share/epic/epic_lfhcal_only.xml the generated file has nothing drawn. Validated with one other person too.

[kkauder]

dd_web_display --export /opt/detector/epic-nightly/share/epic/epic_lfhcal_only.xml does work, but opening with a TBrowser indeed doesn't. Need to use:

TGeoManager::Import("detector_geometry.root")
gGeoManager->GetTopVolume()->Draw("ogl")

This does reproduce something in the middle of the two at the top.

Is this an issue that needs work?

[veprbl]

@kkauder I assume you need to enable the insert itself.

[veprbl]

Looking at this again, it could be that the insert envelope doesn't have "vis" set.

[kkauder]

Hmm. forward_insert.xml does have many "non-zero" vis tags, and the overall default HcalEndcapInsertVis is set to AnlGray