Introduction
VecGeom is a geometry modeller library with hit-detection features as needed by particle detector simulation at the LHC and beyond. It was incubated by a Geant-R&D initiative and the motivation to combine the code of Geant4 and ROOT/TGeo into a single, better maintainable piece of software within the EU-AIDA program. As such it is close in scope to TGeo and Geant4 geometry modellers.
Main features are:
- Build a hierarchic detector geometry out of simple primitives and use it on the CPU or GPU(CUDA)
- Calculate distances and other geometrical information
- Collision detection and navigation in complex scenes
- SIMD support in various flavours:
- True vector interfaces to primitives with SIMD acceleration when benefical
- SIMD acceleration of navigation through the use of special voxelization or bounding box hierarchies
- Runtime specialization of objects to improve execution speed via a factory mechanism and use of C++ templates
- VecGeom also compiles under CUDA
- Few generic kernels serve many instanteations of various simple or vectored interfaces or the CUDA version.
For further information:
- Installation instructions
- User's guide - tbd
- Doxygen reference guide
- Issue tracking system