Tags

Tagging of 6.18.0 containing the changes w.r.t 6.17.0

- ReadGeoModel uses std::vectors as storage backend instead of std::mutli_map
- CI fixes

Fix input/output errors appearing when reading older files.
This is a cleanup,bugfix for version 6.16.0

Development tag to check the G4ElementSorting feature

Introducing "Virtual Geometry" surfaces that can be embedded within the geometry and which respond to alignment corrections in the same way as material geometry. These surfaces do not have any material composition but they can be used in tracking, either during simulation or reconstuction. For instances are provided with this release:  Rectangular, Trapezoidal, Diamond-shaped, and Annular. The last of these is inspired by a particular surface occurrring in ATLAS.  Input output of these surfaces is provided.  Visualization is also provided.

Introducing "Virtual Geometry" surfaces that can be embedded within the geometry and which respond to alignment corrections in the same way as material geometry. These surfaces do not have any material composition but they can be used in tracking, either during simulation or reconstuction. For instances are provided with this release:  Rectangular, Trapezoidal, Diamond-shaped, and Annular. The last of these is inspired by a particular surface occurrring in ATLAS.  Input output of these surfaces is provided.  Visualization is also provided.

New or improved functionality in GeoShape:

    User can now specify the number of random points to be used for estimation the volume, the default is 1M points
    Volume can be set or returned from the shape 
    Test for whether the volume is a polyhedron or not. 
    Total number of constituents can be queried.
    More efficient computation of Boolean volumes

The format of information in the AAHEADER file has changed from the previous version.