/*
 * Examples of gnuplot_i.c usage
 */

#include <stdio.h>
#include <stdlib.h>

#include "gnuplot_i.h"

#define SLEEP_LGTH  1

void slow_print(char * s);

int main ( int argc, char *argv[] ) 
{
  gnuplot_ctrl    *   h1;
  double              phase;
 
  slow_print ( "*** example of gnuplot control through C ***\n" );
/*
  Open a GNUPLOT process.
*/
  h1 = gnuplot_init();

  if ( h1 == NULL ) {
    printf ( "\n" );
    printf ( "Please make gnuplot available in your path.\n" );
    return 1;
  }

  for ( phase = 0.1; phase < 10.0 ; phase = phase + 0.1 ) {
    gnuplot_resetplot ( h1 );
    gnuplot_cmd ( h1, "plot sin(x+%g)", phase );
  }
    
  for ( phase = 10.0; phase >= 0.1 ; phase = phase - 0.1 ) {
    gnuplot_resetplot ( h1 );
    gnuplot_cmd ( h1, "plot sin(x+%g)", phase );
  }
/*
  Close the GNUPLOT process.
*/    
  gnuplot_close ( h1 );
  return 0;
}

void slow_print(char * s)
{
    int     i;

    for (i=0; i<(int)strlen(s) ; i++) {
        printf("%c", s[i]);
        fflush(stdout);
        usleep(10000);
    }
}