94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
// Copyright (c) 2010-2020, Lawrence Livermore National Security, LLC. Produced
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// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
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// LICENSE and NOTICE for details. LLNL-CODE-806117.
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//
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// This file is part of the MFEM library. For more information and source code
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// availability visit https://mfem.org.
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//
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// MFEM is free software; you can redistribute it and/or modify it under the
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// terms of the BSD-3 license. We welcome feedback and contributions, see file
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// CONTRIBUTING.md for details.
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#include "mfem.hpp"
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using namespace mfem;
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#include "catch.hpp"
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TEST_CASE("Gecko integration in MFEM", "[Mesh]")
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{
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Array<int> perm;
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SECTION("Permutation from Gecko is valid")
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{
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Array<bool> elem_covered;
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SECTION("Hex meshes")
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{
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Mesh mesh(3, 4, 5, Element::HEXAHEDRON);
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mesh.GetGeckoElementOrdering(perm);
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REQUIRE(perm.Size() == mesh.GetNE());
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REQUIRE(perm.Min() == 0);
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REQUIRE(perm.Max() == mesh.GetNE() - 1);
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elem_covered.SetSize(perm.Size(), false);
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for (int i = 0; i < perm.Size(); ++i)
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{
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elem_covered[perm[i]] = true;
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}
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bool all_elems_covered = true;
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for (int i = 0; i < perm.Size(); ++i)
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{
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all_elems_covered &= elem_covered[i];
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}
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REQUIRE(all_elems_covered);
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}
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SECTION("Tet meshes")
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{
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Mesh mesh(5, 4, 3, Element::TETRAHEDRON);
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mesh.GetGeckoElementOrdering(perm);
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REQUIRE(perm.Size() == mesh.GetNE());
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REQUIRE(perm.Min() == 0);
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REQUIRE(perm.Max() == mesh.GetNE() - 1);
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elem_covered.SetSize(perm.Size(), false);
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for (int i = 0; i < perm.Size(); ++i)
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{
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elem_covered[perm[i]] = true;
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}
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bool all_elems_covered = true;
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for (int i = 0; i < perm.Size(); ++i)
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{
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all_elems_covered &= elem_covered[i];
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}
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REQUIRE(all_elems_covered);
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}
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}
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SECTION("Reorder preserves physical vertex locations")
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{
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Mesh mesh(3, 4, 5, Element::HEXAHEDRON);
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Mesh mesh_reordered(3, 4, 5, Element::HEXAHEDRON);
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mesh_reordered.GetGeckoElementOrdering(perm);
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mesh_reordered.ReorderElements(perm);
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for (int old_elid = 0; old_elid < perm.Size(); ++old_elid)
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{
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int new_elid = perm[old_elid];
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Array<int> old_dofs, new_dofs;
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mesh.GetElementVertices(old_elid, old_dofs);
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mesh_reordered.GetElementVertices(new_elid, new_dofs);
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for (int dofi = 0; dofi < old_dofs.Size(); ++dofi)
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{
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for (int d = 0; d < 3; ++d)
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{
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REQUIRE(mesh.GetVertex(old_dofs[dofi])[d] == mesh_reordered.GetVertex(
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new_dofs[dofi])[d]);
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}
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}
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}
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}
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}
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