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Core Framework 

a Java main program framework  has to be set up that

• builds under Java 1.4 (Maven, ant,....)

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optionally some wrapping C++ code should be provided that allows to use LCGO in a C++ programm w/o having to rely on references to Java libraries, e.g. for the properties interface

• need to understand garbage collection for java and C++ objects allocated on the stack and on the heap and passing object between java and c++
  • java objects are objects inheriting from java::lang::Object
  • C++ are all other objects 
    • Possibly interesting article http://gcc.gnu.org/ml/java/2004-03/msg00159.html

Material Database

a material data base is needed that

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LCGO drivers need to provide an implementation of an interface to query cellIDs, positions and neighbors:

• cellId <-> position
• cellid range (noise simulation)
• cell sizes
• neighbors

Geometry Elements

we need a full set of geometry classes that allow

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• averaged material (see material, dEdx)
• simple shapes only:
  • boxes - planes ?
  • tubes - cylinders ?

this tracking geometry should allow to compute:

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it is probably desirable to have a well defined system of units a la Geant4, so that every quantity comes in the properly defined unit. So that one can write code, such as:

Wiki Markup&nbsp;&nbsp;&nbsp; cout << "&nbsp; length of TPC \[cm\]:&nbsp; " <<     cout << "  length of TPC [cm]:  " << lcgo->getTPCParameters()->getLength() / cm&nbsp; << endl ; &nbsp;/ cm  << endl ;

Vectors and Matrices 

need to define classes for vectors and matrices (symmetric) that are used throughout LCGO (and LCIO !?)

• 3d vectors
• rotations 3d
• translations (3d vectors)
• 4 vectors (in LCGO ?)
• matrix
• symmatrix
• ...