// high level interface for MshSaver 
//
// Copyright (C) 2020 Vladimir Fonov <vladimir.fonov@gmail.com> 
//
// This Source Code Form is subject to the terms of the Mozilla 
// Public License v. 2.0. If a copy of the MPL was not distributed 
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 
#ifndef IGL_WRITE_MSH_H
#define IGL_WRITE_MSH_H
#include "igl_inline.h"

#include <Eigen/Core>
#include <string>
#include <vector>

namespace igl
{
    // write triangle surface mesh and tetrahedral volume mesh to .msh file
    // Inputs:
    //   msh - file name
    //   X  eigen double matrix of vertex positions  #X by 3
    //   Tri  #Tri eigen integer matrix of triangular faces indices into vertex positions
    //   Tet  #Tet eigen integer matrix of tetrahedral indices into vertex positions
    //   TriTag #Tri eigen integer vector of tags associated with surface faces
    //   TetTag #Tet eigen integer vector of tags associated with volume elements
    //   XFields #XFields list of strings with field names associated with nodes
    //   XF      #XFields list of eigen double matrices, fields associated with nodes 
    //   EFields #EFields list of strings with field names associated with elements
    //   TriF    #EFields list of eigen double matrices, fields associated with surface elements
    //   TetF    #EFields list of eigen double matrices, fields associated with volume elements
    // Known bugs:
    //     files are always stored in binary format
    //     file format is 2.2
    //     only triangle surface elements and tetrahedral volumetric elements are supported
    //     only 3D information is supported
    //     the tag id is duplicated for physical (0) and elementary (1)
    //     same element fields are expected to be associated with surface elements and volumetric elements
    IGL_INLINE bool writeMSH(const std::string   &msh,
                const Eigen::MatrixXd &X,
                const Eigen::MatrixXi &Tri,
                const Eigen::MatrixXi &Tet,
                const Eigen::MatrixXi &TriTag,
                const Eigen::MatrixXi &TetTag,
                const std::vector<std::string>     &XFields,
                const std::vector<Eigen::MatrixXd> &XF,
                const std::vector<std::string>     &EFields,
                const std::vector<Eigen::MatrixXd> &TriF,
                const std::vector<Eigen::MatrixXd> &TetF
                );

}

#ifndef IGL_STATIC_LIBRARY
#  include "writeMSH.cpp"
#endif

#endif //IGL_WRITE_MSH_H