$Id: README,v 1.1 2008/09/03 13:34:03 gcosmo Exp $
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In this directory you can find the test for Geant4 Solids with Optical Photons.
The test was created from a user application in order to test the replay
of the Solids.

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How it works :
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 - The Solid is situated in the center of the World Volume.
   It can be choosen via macro command. 
 - The primary particle (e- of 20 veV) is shooting from Randomly Position on
   the Shpere around the Solid to the center of the World Volume.
 - This primary particle 'enters' in the Solid and create Optical Photons.
   The boundary between Solid and World is declared as Boundary with Reflection.
   If a optical Photon is going outside Solid, it is a Error.
   This error is detected, warning or error message is printed.
   This message also containts the information that can be useful for debugging:
   -Position p and Direction v of the Point  (Global Coordinates), were Error
    is detected.
   -Inside(p):
    If p is Inside, the DistanceToOut(p,v,norm) is given
    If p is Outside,the DistanceToIn(p,-v) is given
    If p is On the Surface, both values are given.

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How to run this test :
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 To build the application, first setup your Geant4 environmental variables,
 do not forget to setup the visualisation part.

 and then do :                  make
 
 and to run it :                AXPETDemonstrator run1.mac
                          

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 Via command line user can choose :
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 the solis :   /mydet/SelectDetector nameOfSolid   
 the rotation: /mydet/RotateX angleInDegree
               /mydet/RotateY angleInDegree
               /mydet/RotateZ angleInDegree
 In case of Error(Optical Photon escaping Solid)
 warning or Abortion of the Run can be chosen.
 It can be useful for large statistics. 
 Coomand for Abort Run : /mydet/AbortRun 1

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The examples are given in vis.mac(shooting 30 e- in all solids) 
============              run1.mac(shooting 3000 e- in shoosen solid, Ellipsoid)
                          run2.mac(shooting 3000 e- in shoosen solid,
                                   Shell=Subtraction of Spheres)