TrkVolumes Package

The package for a generic Volume description in the Tracking realm, Trk::TrackingVolumes and Trk::MagneticFieldVolumes may extend the Trk::Volume class.

Author

Andre.nosp@m.as.S.nosp@m.alzbu.nosp@m.rger.nosp@m.@cern.nosp@m..ch

Introduction

To enable sub detector independend tracking algorithms a generic Trk::Volume description for Tracking algorithms has been created. The Volume class is designed to be mainly used in terms of the TrkExtrapolation package, therefor the Trk::BoundarySurfaces that confine a Volume are extending to Surface class so to be used directly by the Extrapolator, resp. Propagators.

Class Overview

The TrkVolumes package contains of following classes:

• Trk::Volume: oriented using a <nop>HepTransform3D, the shape is given by the passed through VolumeBounds.
• Trk::VolumeBounds: Abstract Base class for boundary description of a Trk::Volume, the interface requires inherited classes to implement a decomposeToSurfaces() method.
  • Trk::VolumeCuboidBounds: extends Trk::VolumeBounds, describes volume boundaries of a cubical volume
    
  • Trk::VolumeCylinderBounds: extends Trk::VolumeBounds, describes volume boundaries of a cylindrical volume
  • Trk::VolumeTrapezoidBounds: extends Trk::VolumeBounds, describes volume boundaries of a ctrapezoidal volume
  • Trk::BoundarySurface: Abstract Base class for surfaces that are boundaries of a Volume.
  • Trk::BoundaryCylinderSurface: extends Trk::CylinderSurface and Trk::BoundarySurface (used for cylindrical volume)
  • Trk::BoundaryDiscSurface: extends Trk::CylinderSurface and Trk::BoundarySurface (used for cylindrical volume)
  • Trk::BoundaryPlaneSurface: extends Trk::CylinderSurface and Trk::BoundarySurface (used for all volume types)

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