M. Novak 11 May 2022
====================


Download and extract into our `work` directory on the VM:
---------------------------------------------------------

Download `day3-start.tar.gz` from your VM (e.g. using `firefox`) then 
you and extract to our work directory that is `$HOME/geant4/work` as:
(go to our work directory; copy `day3-start.tar.gz` from ~/Downloads;
 then extract)

  localhost.localdomain:/app < 216 >cd $HOME/geant4/work/
  localhost.localdomain:/work < 217 >cp ~/Downloads/day3-start.tar.gz .
  localhost.localdomain:/work < 218 >tar -xzvf day3-start.tar.gz


Description:
------------

This the starting point of our application at the beginning of day3. This state 
contains only the implementation of the (mandatory) G4VUserDetectorConstruction 
interface that we completed yesterday by the end of the day. This version of 
`YourDetectorConstruction` is free from typos and contains a bit more comments 
related some details. The detector construction is also included and used in the
`yourMain.cc` main function in order to be able to compile teh code. While we
will go from the state where we finished yesterday to this one step-by-step 
together, this directory is the point where we will continue then the development
of our application today.


Configure, compile and run:
------------------------------

As before you can configure, build and execute the application on your VM (from
the `build` directory) as
 
  $ cmake ../ -DGeant4_DIR=$G4COMP
  $ make 
  $ ./yourMain

(though, nothing will be seen at this point when you execute your application).