[Gmsh] Reading/writing POS files from C++

[walter steffe]

Hello

I have started to add the adaptive meshing to my EmCAD code.
I would like to compute mesh size in an executable and use it in a different executable. 
So I need a way to export/import the view data related with the mesh size.

1) To compute and write the view data I have tried the following code:

  GModel *gm= ....
  
  std::map<std::size_t, double> sf_ele;
  computeSizeField(mesh, sf_ele);  // computeSizeField is similar to that one in demo/adapt_mesh.cpp
  std::vector<std::size_t> keys;
  std::vector<std::vector<double> > values;
  getKeysValues(sf_ele, keys, values);
  PViewDataGModel *d=new PViewDataGModel(type);
  d->addData(gm, keys, values, 0, 0, 0, -1);
  PView *view = new PView(d,-1);
  
  std::string posFileName="xxxx.pos"
  d->writePOS(posFileName,false,true,false);



The written file need to be parsed because 
   "bool PViewData::writePOS(const std::string &fileName, bool binary, bool parsed, bool append)"
do not accepts parsed=false.

Same situation using "bool PView::write(const std::string &fileName, int format, bool append)"


2) To read the pos file I have tried:

   int status = PView::readPOS(posFileName);

But the function "bool PView::readPOS(const std::string &fileName, int fileIndex)" 
can only read a formatted POS file (not a file to be parsed)



May you please indicate a proper way to write/read PView data using the same format ?

Thanks
Walter