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VectorPartitioned.cpp
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Sat, May 25, 17:08

VectorPartitioned.cpp
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#include "support.h"
// =================================================================================================
TEST_CASE("GooseFEM::VectorPartitioned", "VectorPartitioned.h")
{
// =================================================================================================
SECTION("asDofs")
{
// mesh
GooseFEM::Mesh::Quad4::Regular mesh(9,9);
// prescribed DOFs
xt::xtensor<size_t,2> dofs = mesh.dofs();
xt::xtensor<size_t,1> nodesLeft = mesh.nodesLeftOpenEdge();
xt::xtensor<size_t,1> nodesRight = mesh.nodesRightOpenEdge();
xt::xtensor<size_t,1> nodesTop = mesh.nodesTopEdge();
xt::xtensor<size_t,1> nodesBottom = mesh.nodesBottomEdge();
for ( size_t i = 0 ; i < nodesLeft.size() ; ++i )
for ( size_t j = 0 ; j < mesh.ndim() ; ++j )
dofs(nodesRight(i),j) = dofs(nodesLeft(i),j);
xt::xtensor<size_t,1> iip = xt::empty<size_t>({4*nodesBottom.size()});
size_t i = 0;
for ( auto &n : nodesTop ) { iip(i) = dofs(n,0); ++i; }
for ( auto &n : nodesTop ) { iip(i) = dofs(n,1); ++i; }
for ( auto &n : nodesBottom ) { iip(i) = dofs(n,0); ++i; }
for ( auto &n : nodesBottom ) { iip(i) = dofs(n,1); ++i; }
// random displacement
xt::xtensor<double,2> u = xt::random::randn<double>({mesh.nnode(), mesh.ndim()});
for ( size_t i = 0 ; i < nodesLeft.size() ; ++i )
for ( size_t j = 0 ; j < mesh.ndim() ; ++j )
u(nodesRight(i),j) = u(nodesLeft(i),j);
// vector-definition
GooseFEM::VectorPartitioned vector(mesh.conn(), dofs, iip);
// convert
xt::xtensor<double,1> u_u = vector.AsDofs_u(u);
xt::xtensor<double,1> u_p = vector.AsDofs_p(u);
REQUIRE( xt::allclose(u, vector.AsNode(u_u, u_p)) );
}
// =================================================================================================
SECTION("copy_u, copy_p")
{
// mesh
GooseFEM::Mesh::Quad4::Regular mesh(9,9);
// prescribed DOFs
xt::xtensor<size_t,2> dofs = mesh.dofs();
xt::xtensor<size_t,1> nodesLeft = mesh.nodesLeftOpenEdge();
xt::xtensor<size_t,1> nodesRight = mesh.nodesRightOpenEdge();
xt::xtensor<size_t,1> nodesTop = mesh.nodesTopEdge();
xt::xtensor<size_t,1> nodesBottom = mesh.nodesBottomEdge();
for ( size_t i = 0 ; i < nodesLeft.size() ; ++i )
for ( size_t j = 0 ; j < mesh.ndim() ; ++j )
dofs(nodesRight(i),j) = dofs(nodesLeft(i),j);
xt::xtensor<size_t,1> iip = xt::empty<size_t>({4*nodesBottom.size()});
size_t i = 0;
for ( auto &n : nodesTop ) { iip(i) = dofs(n,0); ++i; }
for ( auto &n : nodesTop ) { iip(i) = dofs(n,1); ++i; }
for ( auto &n : nodesBottom ) { iip(i) = dofs(n,0); ++i; }
for ( auto &n : nodesBottom ) { iip(i) = dofs(n,1); ++i; }
// random displacement
xt::xtensor<double,2> u = xt::random::randn<double>({mesh.nnode(), mesh.ndim()});
for ( size_t i = 0 ; i < nodesLeft.size() ; ++i )
for ( size_t j = 0 ; j < mesh.ndim() ; ++j )
u(nodesRight(i),j) = u(nodesLeft(i),j);
// vector-definition
GooseFEM::VectorPartitioned vector(mesh.conn(), dofs, iip);
// convert
xt::xtensor<double,2> v = xt::empty<double>({mesh.nnode(), mesh.ndim()});
vector.copy_u(u, v);
vector.copy_p(u, v);
REQUIRE( xt::allclose(u, v) );
}
// =================================================================================================
}

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