Function main

ibtk/examples/SCPoisson/example.cpp:45–257

* For each run, the input filename must be given on the command line. In all * * cases, the command line is: * * * * executable * *

 *                                                                             *
 *******************************************************************************/
int
main(int argc, char* argv[])
{
    // Initialize IBAMR and libraries. Deinitialization is handled by this object as well.
    IBTKInit ibtk_init(argc, argv, MPI_COMM_WORLD);

    { // cleanup dynamically allocated objects prior to shutdown

        // Parse command line options, set some standard options from the input
        // file, and enable file logging.
        Pointer<AppInitializer> app_initializer = new AppInitializer(argc, argv, "sc_poisson.log");
        Pointer<Database> input_db = app_initializer->getInputDatabase();

        // Create major algorithm and data objects that comprise the
        // application.  These objects are configured from the input database.
        Pointer<CartesianGridGeometry<NDIM>> grid_geometry = new CartesianGridGeometry<NDIM>(
            "CartesianGeometry", app_initializer->getComponentDatabase("CartesianGeometry"));
        Pointer<PatchHierarchy<NDIM>> patch_hierarchy = new PatchHierarchy<NDIM>("PatchHierarchy", grid_geometry);
        Pointer<StandardTagAndInitialize<NDIM>> error_detector = new StandardTagAndInitialize<NDIM>(
            "StandardTagAndInitialize", nullptr, app_initializer->getComponentDatabase("StandardTagAndInitialize"));
        Pointer<BergerRigoutsos<NDIM>> box_generator = new BergerRigoutsos<NDIM>();
        Pointer<LoadBalancer<NDIM>> load_balancer =
            new LoadBalancer<NDIM>("LoadBalancer", app_initializer->getComponentDatabase("LoadBalancer"));
        Pointer<GriddingAlgorithm<NDIM>> gridding_algorithm =
            new GriddingAlgorithm<NDIM>("GriddingAlgorithm",
                                        app_initializer->getComponentDatabase("GriddingAlgorithm"),
                                        error_detector,
                                        box_generator,
                                        load_balancer);

        // Create variables and register them with the variable database.
        VariableDatabase<NDIM>* var_db = VariableDatabase<NDIM>::getDatabase();
        Pointer<VariableContext> ctx = var_db->getContext("context");

        Pointer<SideVariable<NDIM, double>> u_sc_var = new SideVariable<NDIM, double>("u_sc");
        Pointer<SideVariable<NDIM, double>> f_sc_var = new SideVariable<NDIM, double>("f_sc");
        Pointer<SideVariable<NDIM, double>> e_sc_var = new SideVariable<NDIM, double>("e_sc");
        Pointer<SideVariable<NDIM, double>> r_sc_var = new SideVariable<NDIM, double>("r_sc");

        const int u_sc_idx = var_db->registerVariableAndContext(u_sc_var, ctx, IntVector<NDIM>(1));
        const int f_sc_idx = var_db->registerVariableAndContext(f_sc_var, ctx, IntVector<NDIM>(1));
        const int e_sc_idx = var_db->registerVariableAndContext(e_sc_var, ctx, IntVector<NDIM>(1));
        const int r_sc_idx = var_db->registerVariableAndContext(r_sc_var, ctx, IntVector<NDIM>(1));

        Pointer<CellVariable<NDIM, double>> u_cc_var = new CellVariable<NDIM, double>("u_cc", NDIM);
        Pointer<CellVariable<NDIM, double>> f_cc_var = new CellVariable<NDIM, double>("f_cc", NDIM);
        Pointer<CellVariable<NDIM, double>> e_cc_var = new CellVariable<NDIM, double>("e_cc", NDIM);
        Pointer<CellVariable<NDIM, double>> r_cc_var = new CellVariable<NDIM, double>("r_cc", NDIM);

        const int u_cc_idx = var_db->registerVariableAndContext(u_cc_var, ctx, IntVector<NDIM>(0));
        const int f_cc_idx = var_db->registerVariableAndContext(f_cc_var, ctx, IntVector<NDIM>(0));
        const int e_cc_idx = var_db->registerVariableAndContext(e_cc_var, ctx, IntVector<NDIM>(0));
        const int r_cc_idx = var_db->registerVariableAndContext(r_cc_var, ctx, IntVector<NDIM>(0));

        // Register variables for plotting.
        Pointer<VisItDataWriter<NDIM>> visit_data_writer = app_initializer->getVisItDataWriter();
        TBOX_ASSERT(visit_data_writer);