Add utility wrapper methods for easier access to detector geometry parameters

[dudarboh]

BEGINRELEASENOTES

• Add generic MarlinUtil::getDetData for getting DDRec detector extension data from dd4hep.
• Add dedicated getVXDData, getSITData, getFTDData, getTPCData, getSETData in MarlinUtil::ILD namespace which return DDRec extensions of corresponding detector elements of the ILD detector.
• Fix warnings about catching exceptions by value in TrueJet_Parser

ENDRELEASENOTES

As discussed here #22, it is not a bad idea to have wrapper methods which would return extension of the detector elements, so user can have more intuitive access to the detector parameters.

[tmadlener]

Hi @dudarboh,

I think this goes into the right direction. The only thing that I would change is that instead of implementing the same function over and over again, I would implement one templated function that also takes the name of the detector as argument, and then simply call that one from the functions you have defined. As an additional bonus, you have then also defined a function that allows users to get more "exotic" extension data or to get extension data from detectors with a different name. Nevertheless, the main use cases are covered by the default functions you provide otherwise.

For the documentation, I think it is enough to refer to dd4hep from here. Ideally with a link to the actual documentation, or if that is not easily possible, just a sentence that refers the user to dd4hep for further information.

[gaede]

Hi @dudarboh, this is nice. One problem though: the utility should be genric, i.e. work for every detector not only ILD. Can you split this up and add a dedicated ILDGeometryHelpers.h with the ILD specific template specializations ?

[tmadlener]

Thanks for fixing the exception warnings 👍

[tmadlener]

@dudarboh is there anything from your side that is still missing? Otherwise, I would say we add a link to the dd4hep documentation of where more information of the returned classes can be obtained and we merge this.

[dudarboh]

Hi @tmadlener,

nothing is missing at this point. I added documentation and removed WIP. I think this is ready for merging

[tmadlener]

Thanks.