[ALICE3] IOTOF: Digitization for the TOF3

[GiorgioAlbertoLucia]

@njacazio
First steps towards a full digitization for TOF3

• GeometryTGeo class added, to move from the global coordinates to the local coordinate of a given chip
• Segmentation class added, which finds the pixel position (row, col) on a chip, from the local chip coordinate
• Digitizer class further developed, to process single hits and produce digits. Currently a flat efficiency and no checks on the created charge are considered

[alibuild]

Error while checking build/O2/fullCI_slc9 for f30965d at 2026-05-07 13:28:

## sw/BUILD/O2-latest/log
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:79:7: error: use of undeclared identifier 'iRow'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:79:14: error: use of undeclared identifier 'iCol'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:80:7: error: void function 'detectorToLocalUnchecked' should not return a value [-Wreturn-type]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:90:7: error: use of undeclared identifier 'iRow'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:90:14: error: use of undeclared identifier 'iCol'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:91:7: error: void function 'detectorToLocalUnchecked' should not return a value [-Wreturn-type]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:100:7: error: use of undeclared identifier 'iRow'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:100:14: error: use of undeclared identifier 'iCol'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:101:7: error: void function 'detectorToLocalUnchecked' should not return a value [-Wreturn-type]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:115:7: error: use of undeclared identifier 'iRow'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:115:14: error: use of undeclared identifier 'iCol'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:130:7: error: use of undeclared identifier 'iRow'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:130:14: error: use of undeclared identifier 'iCol'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:144:7: error: use of undeclared identifier 'iRow'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:144:14: error: use of undeclared identifier 'iCol'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:177:5: error: void function 'localToDetectorUnchecked' should not return a value [-Wreturn-type]
Error: /sw/slc9_x86-64/ROOT/v6-36-04-alice9-30/bin/rootcling: compilation failure (/sw/BUILD/263733daeb824cffa11093e2e691b593b7aab018/O2/Detectors/Upgrades/ALICE3/IOTOF/simulation/G__O2IOTOFSimulation2e3116d5a2_dictUmbrella.h)
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2/fullCI_slc9 for 2a32b97 at 2026-05-07 15:48:

## sw/BUILD/O2-latest/log
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:80:7: error: void function 'detectorToLocalUnchecked' should not return a value [-Wreturn-type]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:91:7: error: void function 'detectorToLocalUnchecked' should not return a value [-Wreturn-type]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h:101:7: error: void function 'detectorToLocalUnchecked' should not return a value [-Wreturn-type]
Error: /sw/slc9_x86-64/ROOT/v6-36-04-alice9-30/bin/rootcling: compilation failure (/sw/BUILD/263733daeb824cffa11093e2e691b593b7aab018/O2/Detectors/Upgrades/ALICE3/IOTOF/simulation/G__O2IOTOFSimulationc799bbc8df_dictUmbrella.h)
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2/fullCI_slc9 for 0dc1796 at 2026-05-07 21:28:

## sw/BUILD/o2checkcode-latest/log
--
========== List of errors found ==========
++ GRERR=0
++ grep -v clang-diagnostic-error error-log.txt
++ grep ' error:'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/base/src/GeometryTGeo.cxx:180:39: error: statement should be inside braces [readability-braces-around-statements]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/base/src/GeometryTGeo.cxx:182:40: error: statement should be inside braces [readability-braces-around-statements]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/base/src/GeometryTGeo.cxx:184:47: error: statement should be inside braces [readability-braces-around-statements]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/base/src/GeometryTGeo.cxx:188:39: error: statement should be inside braces [readability-braces-around-statements]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/base/src/GeometryTGeo.cxx:190:40: error: statement should be inside braces [readability-braces-around-statements]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/IOTOF/base/src/GeometryTGeo.cxx:192:47: error: statement should be inside braces [readability-braces-around-statements]
++ [[ 0 == 0 ]]
++ exit 1
--

Full log here.