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Requirements
- Should be at least as functional as existing systems (org.lcsim, GEAR, mocha, SLIC)
- Shoule enable smooth transition path from existing systems
- Should encourage interoperability between systems
Implementation Ideas
- Three levels of API?
- Low level (equivalent to Geant4 geometry objects)
- Initially dumb objects, sufficient to create Geant4 geometry
- Medium level (similar to GEAR::Vertex::API)
- High level (allows finding which detectors exist)
- have collection of driver classes
- one subdetector level
- gcj comliant Java ( to be called from C++/Marlin)
- read in 'free format' from parameters from xml elements
- should probably be similar to compact/gear
- create queue of geometry instructions
- logical volumes
- physical volumes
- placements
- material
- etc
points to cover
- GEAR++ interface deifinition (mediun level)
- material database
- field maps
- properties (sampling fractions)
- dE/dX
- readout properties
- cellId <-> position
- cellid range (noise simulation)
- cell sizes
- neighbors