vtk_utils.h

// Copyright (C) 2020-2022 Garth N. Wells and Jørgen S. Dokken
//
// This file is part of DOLFINx (https://www.fenicsproject.org)
//
// SPDX-License-Identifier:    LGPL-3.0-or-later
 
#pragma once
 
#include <cstdint>
#include <dolfinx/mesh/cell_types.h>
#include <tuple>
#include <vector>
#include <xtensor/xtensor.hpp>
 
namespace dolfinx
{
namespace fem
{
class FunctionSpace;
}
 
namespace mesh
{
enum class CellType;
class Mesh;
} // namespace mesh
 
namespace io
{
std::tuple<xt::xtensor<double, 2>, std::vector<std::int64_t>,
           std::vector<std::uint8_t>, xt::xtensor<std::int32_t, 2>>
vtk_mesh_from_space(const fem::FunctionSpace& V);
 
xt::xtensor<std::int64_t, 2> extract_vtk_connectivity(const mesh::Mesh& mesh);
 
} // namespace io
} // namespace dolfinx