Please add an example on how to add new BC keyword

[Trophime]

Hi,
@prudhomm @vincentchabannes @romainhild
would it be possible to add an example on how to implement new BC conditions?
I'm thinking of BiotSavart , for instance, to compute Dirichlet conditions from a given formula or a call to a dedicated library.

[romainhild]

The easier I think is to add it directly in the lambda function.
Something like:

if ( tb->modelProperties().boundaryConditions().hasSection( tb->keyword() ) )
{
  auto jarg = tb->modelProperties().boundaryConditions().section( tb->keyword() );
  if ( jarg.contains( "mynewbc" ) )
  {
    auto const& j_bc = jarg.at( "mynewbc" );
    for ( auto const& [j_bckey,j_bcval] : j_bc.items() )
    {
      // here implement your boundary condition
      // j_bckey is the name of one bc of type "mynewbc"
      // j_bcval is the json section where you can have anything you want (markers, expr, path to a script to run,...)
    }
  }
}

[prudhomm]

@Trophime this is done in src/