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fd_grid.hpp

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  • FuncHeaviside.h 1.12 KiB
    // Gmsh - Copyright (C) 1997-2019 C. Geuzaine, J.-F. Remacle
    //
    // See the LICENSE.txt file for license information. Please report all
    // issues on https://gitlab.onelab.info/gmsh/gmsh/issues.
    //
    // Contributor(s):
    //   Boris Sedji
    //
    
    #ifndef FUNCHEAVISIDE_H
    #define FUNCHEAVISIDE_H
    
    #include "simpleFunction.h"
    #include "gmshLevelset.h"
    
    class FuncHeaviside : public simpleFunctionOnElement<double> {
    private:
      gLevelset *_ls;
    
    public:
      FuncHeaviside(gLevelset *ls) : _ls(ls) {}
      virtual double operator()(double x, double y, double z) const
      {
        if(_ls->isInsideDomain(x, y, z))
          return 1;
        else
          return -1;
      }
      virtual double operator()(double x, double y, double z, MElement *e) const
      {
        if(_ls->isInsideDomain(x, y, z))
          return 1;
        else
          return -1;
      }
      virtual void gradient(double x, double y, double z, double &dfdx,
                            double &dfdy, double &dfdz) const
      {
        dfdx = dfdy = dfdz = 0.0;
      }
      virtual void gradient(double x, double y, double z, double &dfdx,
                            double &dfdy, double &dfdz, MElement *e) const
      {
        dfdx = dfdy = dfdz = 0.0;
      }
    };
    
    #endif