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mfem/fem/integrator.cpp
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// Copyright (c) 2010-2025, Lawrence Livermore National Security, LLC. Produced
// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
// LICENSE and NOTICE for details. LLNL-CODE-806117.
//
// This file is part of the MFEM library. For more information and source code
// availability visit https://mfem.org.
//
// MFEM is free software; you can redistribute it and/or modify it under the
// terms of the BSD-3 license. We welcome feedback and contributions, see file
// CONTRIBUTING.md for details.
#include "integrator.hpp"
#include "fem.hpp"
#include "intrules.hpp"
namespace mfem
{
const IntegrationRule* Integrator::GetIntegrationRule(
const FiniteElement& trial_fe, const FiniteElement& test_fe,
const ElementTransformation& trans) const
{
const IntegrationRule* result;
const NURBSFiniteElement *NURBSFE;
if (patchRules &&
(NURBSFE = dynamic_cast<const NURBSFiniteElement *>(&test_fe)))
{
const int patch = NURBSFE->GetPatch();
const int* ijk = NURBSFE->GetIJK();
Array<const KnotVector*>& kv = NURBSFE->KnotVectors();
result = &patchRules->GetElementRule(NURBSFE->GetElement(), patch, ijk,
kv);
}
else if (IntRule)
{
result = IntRule;
}
else
{
result = GetDefaultIntegrationRule(trial_fe, test_fe, trans);
}
return result;
}
const IntegrationRule* Integrator::GetIntegrationRule(
const FiniteElement& el,
const ElementTransformation& trans) const
{
return GetIntegrationRule(el, el, trans);
}
}