npdet_to_step cannot handle TGeoTessellation

[wdconinc]

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

• Which branch (often main for latest released):
• Which version (or HEAD for the most recent on git):
• Any specific OS or system where the issue occurs? eic-shell
• Any special versions of ROOT or Geant4?

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

0. In eic-shell, with /opt/detector/setup.sh
1. npdet_to_step part -l 4 HcalBarrel -o bhcal $DETECTOR_PATH/epic_bhcal.xml

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

Should export STEP file.

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

nightly> wdconinc@menelaos:~/git/npsim$ npdet_to_step part -l 4 HcalBarrel -o bhcal $DETECTOR_PATH/epic_bhcal.xml 
Error in cling::AutoLoadingVisitor::InsertIntoAutoLoadingState:
   Missing FileEntry for include/TGeoToStep.h
   requested to autoload type TGeoToStep
terminate called after throwing an instance of 'std::domain_error'
  what():  Unknown Shape
Aborted (core dumped)

Due to

npsim/src/geocad/src/TGeoToOCC.cxx

Line 223 in c3bde04

throw std::domain_error("Unknown Shape");

.

Two step resolution:

1. catch exception in

   npsim/src/geocad/src/TOCCToStep.cxx

   Line 93 in c3bde04

   fShape = fRootShape.OCC_SimpleShape(currentVolume->GetShape());

   and/or

   npsim/src/geocad/src/TOCCToStep.cxx

   Line 119 in c3bde04

   Mothershape = fRootShape.OCC_SimpleShape(motherVol->GetShape());

   (depending on which one causes it), and just bypass trying to convert and include it,
2. add support for conversion in

   npsim/src/geocad/src/TGeoToOCC.cxx

   Line 130 in c3bde04

   TopoDS_Shape TGeoToOCC::OCC_SimpleShape(TGeoShape *TG_Shape)

   .