[Gmsh] To Optimize the 3D mesh

[yoshihisa aoyagi]

Dear Gmsh User,


I would like to know how to optimize the 3D mesh in the program API.


I could compile ,link and run  the mainSimple.EXE in the GMSH api_demos
after some toils and troubles.

I cloud generate the3D mesh(test.msh).

I know the operation to excute the Optimize or Optimize_Tetgen in the GMSH
menu Windows.

But, I don't know how to write the program to optimize 3D mesh.


If there is some functions such as m->mesh_Optimize or
m->mesh_Optimize_Tetgen,

Please let me know.





#include <stdio.h>
#include "Gmsh.h"
#include "GModel.h"
#include "MElement.h"

int main(int argc, char **argv)
{
  GmshInitialize(argc, argv);
  //GmshSetOption("Mesh", "Algorithm", 5);
  GModel *m = new GModel();
  m->readGEO("../../tutorial/t5.geo");
  //GmshMergeFile("../../tutorial/t5.geo"); // will also set the bbox
  m->mesh(3);
  for(GModel::riter it = m->firstRegion(); it != m->lastRegion(); ++it){
    GRegion *r = *it;
    printf("volume %d contains %d elements:\n", r->tag(),
r->getNumMeshElements());
    for(unsigned int i = 0; i < r->getNumMeshElements(); i++)
      printf(" %d", r->getMeshElement(i)->getNum());
    printf("\n");
  }
  m->writeMSH("test.msh");
  m->writeUNV("test.unv");
  delete m;
  GmshFinalize();
}