# include <cstdlib>
# include <iostream>
# include <iomanip>
# include <cmath>

using namespace std;

# include "dislin.H"

int main ( int argc, char *argv[] );

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

int main ( int argc, char *argv[] )

//******************************************************************************
//
//  Purpose:
//
//    MAIN demonstrates the use of the CURVE routine.
//
//  Modified:
// 
//    02 September 2005
//
{
  static char cbuf[41];
  static char *ctit = "Pie Charts (PIEGRF)";
  int i;
  int nya = 2800;
  static float xray[5] = { 1.0, 2.5, 2.0, 2.7, 1.8 };

  cout << "\n";
  cout << "DISLIN_EX06:\n";
  cout << "  Demonstrate the use of the PIEGRF routine, for\n";
  cout << "  plotting piechart data.\n";
//
//  Specify the format of the output file.
//
  metafl ( "PNG" );
//
//  Specify the name of the output graphics file.
//
  setfil ( "dislin_ex06.png" );

  setpag ( "da4p" );
  disini ( );
  pagera ( );
  complx ( );
  axslen ( 1600, 1000 );
  titlin ( ctit, 2 );
  chnpie ( "both" );

  legini ( cbuf, 5, 8 );
  leglin ( cbuf, "FIRST", 1 );
  leglin ( cbuf, "SECOND", 2 );
  leglin ( cbuf, "THIRD", 3 );
  leglin ( cbuf, "FOURTH", 4 );
  leglin ( cbuf, "FIFTH", 5 );

  patcyc ( 1, 7L );
  patcyc ( 2, 4L );
  patcyc ( 3, 13L );
  patcyc ( 4, 3L );
  patcyc ( 5, 5L );

  for ( i = 0; i < 2; i++ )
  {
    axspos ( 250, nya-i*1200 );
    if ( i == 1 )
    {
      labels ( "data", "pie" );
      labpos ( "external", "pie" );
    }

    piegrf ( cbuf, 1, xray, 5 );

    if ( i == 1 )
    {
      height ( 50 );
      title ( );
    }
    endgrf ( );
  }

  disfin ( );

  cout << "\n";
  cout << "DISLIN_EX06:\n";
  cout << "  Normal end of execution.\n";

  return 0;
}