AutomaticContactPairingGenerator.h

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
 
#pragma once
 
#include "MeshGenerator.h"
 
class AutomaticContactPairingGenerator : public MeshGenerator
{
public:
  static InputParameters validParams();
  AutomaticContactPairingGenerator(const InputParameters & parameters);
  std::unique_ptr<MeshBase> generate() override;
 
  using ContactPairs = std::vector<std::pair<std::string, std::string>>;
 
  static constexpr auto contact_pairs_property = "contact_pairs";
 
  static std::string pairSuffix(const std::pair<BoundaryName, BoundaryName> & pair);
 
protected:
  std::unique_ptr<MeshBase> & _input;
 
private:
  const std::vector<BoundaryName> & _pairing_boundaries;
  const Real _pairing_distance;
  const MooseEnum & _pairing_method;
  const std::string & _prefix;
  const bool _create_lower_d_blocks;
 
  struct CandidateBoundary
  {
    BoundaryName name;
    BoundaryID id;
    Real area;
    Point centroid;
  };
 
  std::vector<std::pair<BoundaryName, BoundaryName>>
  findPairsNodeProximity(const MeshBase & mesh) const;
 
  std::vector<std::pair<BoundaryName, BoundaryName>> findPairsCentroid(const MeshBase & mesh) const;
 
  std::vector<CandidateBoundary> candidateBoundaries(const MeshBase & mesh) const;
 
  static std::pair<BoundaryName, BoundaryName> orderPair(const CandidateBoundary & a,
                                                         const CandidateBoundary & b);
 
  static void removeDuplicatePairs(std::vector<std::pair<BoundaryName, BoundaryName>> & pairs);
};