now possible with level-sets as well as planes. Removed tetPoints class
as this wasn't really used anywhere except for the old tet-cutting
routines. Restored tetPointRef.H to be consistent with other primitive
shapes. Re-wrote tet-overlap mapping in terms of the new cutting.
terms of the local barycentric coordinates of the current tetrahedron,
rather than the global coordinate system.
Barycentric tracking works on any mesh, irrespective of mesh quality.
Particles do not get "lost", and tracking does not require ad-hoc
"corrections" or "rescues" to function robustly, because the calculation
of particle-face intersections is unambiguous and reproducible, even at
small angles of incidence.
Each particle position is defined by topology (i.e. the decomposed tet
cell it is in) and geometry (i.e. where it is in the cell). No search
operations are needed on restart or reconstruct, unlike when particle
positions are stored in the global coordinate system.
The particle positions file now contains particles' local coordinates
and topology, rather than the global coordinates and cell. This change
to the output format is not backwards compatible. Existing cases with
Lagrangian data will not restart, but they will still run from time
zero without any modification. This change was necessary in order to
guarantee that the loaded particle is valid, and therefore
fundamentally prevent "loss" and "search-failure" type bugs (e.g.,
2517, 2442, 2286, 1836, 1461, 1341, 1097).
The tracking functions have also been converted to function in terms
of displacement, rather than end position. This helps remove floating
point error issues, particularly towards the end of a tracking step.
Wall bounded streamlines have been removed. The implementation proved
incompatible with the new tracking algorithm. ParaView has a surface
LIC plugin which provides equivalent, or better, functionality.
Additionally, bug report <https://bugs.openfoam.org/view.php?id=2517>
is resolved by this change.
- previous only checked for clouds at the last instance and only
detected lagrangian fields from the first cloud.
Now check for clouds at all instances and detect all of their fields
as well.
- consolidate word::validated() into word::validate() and also allow
as short form for string::validate<word>(). Also less confusing than
having similarly named methods that essentially do the same thing.
- more consistent const access when iterating over strings
- add valid(char) for keyType and wordRe
- error::throwExceptions(bool) returning the previous state makes it
easier to set and restore states.
- throwing() method to query the current handling (if required).
- the normal error::throwExceptions() and error::dontThrowExceptions()
also return the previous state, to make it easier to restore later.
- use allocator class to wrap the stream pointers instead of passing
them into ISstream, OSstream and using a dynamic cast to delete
then. This is especially important if we will have a bidirectional
stream (can't delete twice!).
STYLE:
- file stream constructors with std::string (C++11)
- for rewind, explicit about in|out direction. This is not currently
important, but avoids surprises with any future bidirectional access.
- combined string streams in StringStream.H header.
Similar to <sstream> include that has both input and output string
streams.
- added an explicit print, but only report profiling to the log
file from master process.
We don't wish to overwrite any profiling that was conducted during
the simulation. Besides which, we don't have a proper Time object
for handling the write nicely either.
- erroneous double logic for subset meshes.
The underlying vtk::vtuCells uses a cellMap to map into a global
field, which also allows handling of decomposed polyhedral cells.
If a mesh subset is involved (eg, cellSet, cellZone), then the
set/zone cellMap can be used to ensure that the original number is
properly adjusted. For foamToVTK, the meshSubsetHelper already
does the subsetting and is used when loading fields.
Does not affect ParaView reader module since there we work on the
full field and do the subsetting manually (using the cellMap).
