view +grid/boundaryIdentifier.txt @ 607:0546de4b31a2 feature/grids

Make grid.evalOn faster.
author Martin Almquist <malmquist@stanford.edu>
date Sat, 14 Oct 2017 22:28:27 -0700
parents 763d50caddf3
children
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A grid.boundaryIdentifier identifies a boundary of a grid.
For a Cartesian grid it is simply 's', 'n', 'w', 'e'.
For a multiblock grid it might be something like {1, 's'}.
For some other grid it will be up to the developer to chose
a good way to identify boundaries.