/***********************************************************************
*
*       ELMER, A Computational Fluid Dynamics Program.
*
*       Copyright 1st April 1995 - , Center for Scientific Computing,
*                                    Finland.
*
*       All rights reserved. No part of this program may be used,
*       reproduced or transmitted in any form or by any means
*       without the written permission of CSC.
*
*                Address: Center for Scientific Computing
*                         Tietotie 6, P.O. BOX 405
*                         02101 Espoo, Finland
*                         Tel.     +358 0 457 2001
*                         Telefax: +358 0 457 2302
*                         EMail:   Jari.Jarvinen@csc.fi
************************************************************************/

/***********************************************************************
Program:    ELMER Front 
Module:     ecif_bodyelement2D.h
Language:   C++
Date:       01.10.98
Version:    1.00
Author(s):  Martti Verho
Revisions:  

Abstract:   Derived from Bodyelement-class. 
            Handles 2D-bodyelements.

************************************************************************/

#ifndef _ECIF_BODYELEMENT2D_
#define _ECIF_BODYELEMENT2D_

#include "ecif_bodyElement.h"

                                 
class BodyElement2D : public BodyElement
{     
public:
  BodyElement2D();
  BodyElement2D(int tag);
  BodyElement2D(int v1_id, int v2_id);
  BodyElement2D(int nof_vertices, int* vertex_ids);
  BodyElement2D(int v1_id, int v2_id, Geometry* pGmtr, int code = 0, char* name = 0);
  BodyElement2D(int v1_id, int v2_id, ecif_EdgeGeometry_X* params);
  BodyElement2D(ecif_Element_X& trx_element);
  BodyElement2D(int tag, int parent1_tag, int parent2_tag,int nof_fem_elements);
  BodyElement2D(int parent1_tag, int parent2_tag, int nof_fem_elements);
  ~BodyElement2D();

  void addCoveringElement(BodyElement* se, beStatus se_stat);
  void checkBoundaryDiscretization(int mesh_index);
  bool checkOuterBoundaries();
  int compareOrientation(BodyElement* oe);
  BodyElement* createElement(int v1_id, int v2_id, ecif_geometryType gt);
  //void draw(Renderer* renderer, flagName geometry_type, int body_id, int direction, bool is_first_loop);
  int findMeshBorderNodes(int buf_size, int* ids_buffer);
  int getMifGeometryTag(int index) const;
  int getNofMifGeometries() const;
  double getParamArea(Geometry* gp);
  ParamValues* getParamValues(Geometry* gp);
  BodyElement* getSubElement(int index);
  void init(char* be_name = NULL);
  static void initClass(Model* model);
  //bool isBemBoundary();
  //bool isInnerBoundary();
  bool isOk();
  bool isOnSameAxis(GcPoint& p1, GcPoint& p2);
  matchType matchToLinear(BodyElement* be2, BodyElement*& common);
  matchType matchToNurbs(BodyElement* be2, BodyElement*& common);
  ostream& output_mif(ostream& out);
  void setMifTag(int& next_tag);

protected:
  int calcDirection(BodyElement* sub_element);
  BodyElementList* findOuterBoundary();
  int getLastTag() { return last_tag; }
  bool isBefore(BodyElement* se1, int dir1,
                BodyElement* se2, int dir2,
                Geometry* gp);
  int newTag() { return ++last_tag;}
  void setLastTag(int ltag) { last_tag = ltag;}

  int nofMifTags;
  int* mifTags;

  static int last_tag;

} ;

#endif