Method clearGrid

SRC/element/PFEMElement/BackgroundMesh.cpp:785–832

}

void BackgroundMesh::clearGrid() {
    Domain* domain = OPS_GetDomain();
    if (domain == 0) return;

    // remove cells
    for (std::map<VInt, BNode>::iterator it = bnodes.begin();
         it != bnodes.end(); ++it) {
        BNode& bnode = it->second;
        const VInt& tags = bnode.getTags();
        int type = bnode.getType();

        if (type == BACKGROUND_FLUID) {
            for (int i = 0; i < (int)tags.size(); ++i) {
                // remove node
                Node* nd = domain->removeNode(tags[i]);
                if (nd != 0) {
                    delete nd;
                }

                // remove pc
                Pressure_Constraint* pc =
                    domain->removePressure_Constraint(tags[i]);
                if (pc != 0) {
                    delete pc;
                }
            }
        } else if (type == BACKGROUND_FLUID_STRUCTURE) {
            // remove node
            Node* nd = domain->removeNode(tags[1]);
            if (nd != 0) {
                delete nd;
            }

            // remove pc
            Pressure_Constraint* pc =
                domain->removePressure_Constraint(tags[1]);
            if (pc != 0) {
                delete pc;
            }
        }
    }
    for (auto& bcell : bcells) {
        bcell.second.removeCenterNode();
    }

    bnodes.clear();
    bcells.clear();
}

bool BackgroundMesh::inEle(const VDouble& N) {
    // out