MeshNodesAlongSurface.cpp

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// SPDX-FileCopyrightText: Copyright (c) OpenGeoSys Community (opengeosys.org)
// SPDX-License-Identifier: BSD-3-Clause
 
#include "MeshNodesAlongSurface.h"
 
#include <algorithm>
 
#include "BaseLib/quicksort.h"
#include "GeoLib/Surface.h"
#include "MathLib/MathTools.h"
#include "MeshLib/Mesh.h"
#include "MeshLib/Node.h"
 
namespace MeshGeoToolsLib
{
MeshNodesAlongSurface::MeshNodesAlongSurface(MeshLib::Mesh const& mesh,
                                             GeoLib::Surface const& sfc,
                                             double epsilon_radius,
                                             SearchAllNodes search_all_nodes)
    : _mesh(mesh), _sfc(sfc)
{
    auto const& mesh_nodes = _mesh.getNodes();
    const std::size_t n_nodes(search_all_nodes == SearchAllNodes::Yes
                                  ? _mesh.getNumberOfNodes()
                                  : _mesh.computeNumberOfBaseNodes());
    // loop over all nodes
    for (std::size_t i = 0; i < n_nodes; i++)
    {
        auto const* const node = mesh_nodes[i];
        if (!sfc.isPntInBoundingVolume(*node, epsilon_radius))
        {
            continue;
        }
        if (sfc.isPntInSfc(*node, epsilon_radius))
        {
            _msh_node_ids.push_back(node->getID());
        }
    }
}
 
MeshLib::Mesh const& MeshNodesAlongSurface::getMesh() const
{
    return _mesh;
}
 
std::vector<std::size_t> const& MeshNodesAlongSurface::getNodeIDs() const
{
    return _msh_node_ids;
}
 
GeoLib::Surface const& MeshNodesAlongSurface::getSurface() const
{
    return _sfc;
}
 
}  // end namespace MeshGeoToolsLib