/***************************************************************************
 *   Copyright (c) 2007                                                    *
 *   Joachim Zettler <Joachim.Zettler@gmx.de>                              *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/

/******CONVERTDYNA.H******/
#ifndef CONVERTDYNA_H
#define CONVERTDYNA_H

/******MAIN INCLUDES******/
#include <fstream>
#include <vector>
#include <map>
#include <string>

/******MESH INCLUDES******/
#include <Mod/Mesh/App/Core/MeshKernel.h>
#include <Mod/Mesh/App/Core/Builder.h>
#include <Mod/Mesh/App/Core/TopoAlgorithm.h>
#include <Mod/Mesh/App/Core/Iterator.h>
#include <Mod/Mesh/App/MeshPy.h>
#include <Mod/Mesh/App/Mesh.h>

/******STRUCTS******/
//This structure will be used internally in this routine without any affects of outside variable
typedef struct
{
    unsigned int PointIndex;
    std::vector<double> Coords;
    bool Constrained;       //Another pair of points constraining this point...?
    bool Constrain;        //This point constraining another point...?
    std::vector<unsigned int> ConstrainedBy;
    std::vector<unsigned int> Constraining;
    std::vector<unsigned int> FacetRef;

}VERTICES;   /*!< VERTICES struct. Contains coordinates, index, face reference, and constraining informations*/

typedef struct
{
    unsigned int FaceIndex;
    std::vector<unsigned int> PointIndex;

}FACE; /*!< FACE struct. Contains the face index, and the reference to the point*/



typedef struct
{
    std::vector<unsigned int> PointIndex;
}STLINDEX;  /*!< STLINDEX struct, contains only the triangulated face vertex indexes */

/*! \brief DYNA Files Reader

 This Function will read in a DYNA file, designated by inputname. Only three Information will be parsed:-
 *NODE, *CONSTRAINTS_ADAPTIVITY, and *ELEMENT_SHELL_THICKNESS (for the third, only first line will be parsed)

 From *NODE the coordinates and vertex index will be parsed. From *ELEMENT_SHELL_THICKNESS only the face nodal
 will be parsed, and from *CONSTRAINTS_ADAPTIVITY the constraints point (flagged by Constrain and Constrained) will
 be parsed.

 As output, a mesh.

 TODO:-
 1. A face might consists of 2 opposite constraint points, 3 constraint points or 4 constraint points in it's
 edges. These are not implemented yet.
 2. Some other keyword might contain the face information other than *ELEMENT_SHELL_THICKNESS
 3. Multiple-PIDS DYNA files is not yet implemented. This program still assumes that it's only a single PID DYNA
*/
class ReadDyna
{
public:
    ReadDyna(MeshCore::MeshKernel &m,const char* &inputname);
protected:
    void ReadNode(std::ifstream &inputfile);
    void ReadConstraints(std::ifstream &inputfile);
    void ReadShellThickness(std::ifstream &inputfile);
    void Convert();
    void PutInMesh(MeshCore::MeshKernel &mesh);
private:
    std::map<unsigned int, VERTICES> Pointlist;
    std::map<unsigned int, FACE> Facelist;
    std::vector<STLINDEX> Stllist;

};
#endif  /*CONVERTDYNA_H DEFINED*/