UnsignedDistanceToSurfaceMesh.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 "Function.h"

// Forward declarations
class SBMSurfaceMeshBuilder;
class KDTree;
class SBMBndElementBase;

class UnsignedDistanceToSurfaceMesh : public Function
{
public:
  using Function::value;

  static InputParameters validParams();

  virtual void initialSetup() override;

  UnsignedDistanceToSurfaceMesh(const InputParameters & parameters);

  const SBMBndElementBase & closestBoundaryElem(const Point & p) const;

  RealVectorValue distanceVectorToSurface(const Point & p) const;

  Real value(Real t, const Point & p) const override;

  RealGradient gradient(Real t, const Point & p) const override;

  RealVectorValue surfaceNormal(const Point & p) const;

protected:
  KDTree * _kd_tree;
  const std::vector<std::unique_ptr<SBMBndElementBase>> * _boundary_elements;
};