CutMesh.cpp

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// Gmsh - Copyright (C) 1997-2022 C. Geuzaine, J.-F. Remacle
//
// See the LICENSE.txt file in the Gmsh root directory for license information.
// Please report all issues on https://gitlab.onelab.info/gmsh/gmsh/issues.
 
#include "CutMesh.h"
#include "GModel.h"
#include "gmshLevelset.h"
 
StringXNumber CutMeshOptions_Number[] = {{GMSH_FULLRC, "View", nullptr, -1.},
                                         {GMSH_FULLRC, "Split", nullptr, 0.},
                                         {GMSH_FULLRC, "SaveTri", nullptr, 0.}};
 
extern "C" {
GMSH_Plugin *GMSH_RegisterCutMeshPlugin() { return new GMSH_CutMeshPlugin(); }
}
 
std::string GMSH_CutMeshPlugin::getHelp() const
{
  return "Plugin(CutMesh) cuts the mesh of the current GModel with "
         "the zero value of the levelset defined with the view 'View'."
         "Sub-elements are created in the new model (polygons in 2D and "
         "polyhedra in 3D) and border elements are created on the "
         "zero-levelset.\n\n"
         "If `Split' is nonzero, the plugin splits the mesh"
         "along the edges of the cut elements in the positive side.\n\n"
         "If 'SaveTri' is nonzero, the sub-elements are saved as simplices.\n\n"
         "Plugin(CutMesh) creates one new GModel.";
}
 
int GMSH_CutMeshPlugin::getNbOptions() const
{
  return sizeof(CutMeshOptions_Number) / sizeof(StringXNumber);
}
 
StringXNumber *GMSH_CutMeshPlugin::getOption(int iopt)
{
  return &CutMeshOptions_Number[iopt];
}
 
int GMSH_CutMeshPlugin::run()
{
  int iView = (int)CutMeshOptions_Number[0].def;
  if(iView < 0) iView = PView::list.size() - 1;
 
  gLevelsetPostView *gLs = new gLevelsetPostView(iView);
 
  int split = (int)CutMeshOptions_Number[1].def;
  int saveTri = (int)CutMeshOptions_Number[2].def;
  GModel *gm = GModel::current();
  GModel *cgm = gm->buildCutGModel(gLs, !split, saveTri);
  cgm->setVisibility(1);
  return 0;
}