/*
   Program: circles.c

   Try out the graphics library.
   Draw lots of circles.
*/

#include <stdio.h>
#include "genlib.h"
#include "simpio.h"

#define CIRCLES 13

/* include the Graphics Package */
#include "graphics.h"

main() {
  double x, y, max_x, max_y ;
  double mid_x, mid_y ;
  double radius, increment ;
  int i ;

  /* Initialize graphics routines */
  InitGraphics() ;

  /* Find out window sizes */
  max_x = GetWindowWidth() ;
  max_y = GetWindowHeight() ;
  mid_x = max_x / 2.0 ;
  mid_y = max_y / 2.0 ;
  
  increment = mid_y/(CIRCLES + 1) ;
  radius = increment ;
  for ( i = 1 ; i <= CIRCLES ; i++ ) {
     MovePen(mid_x + radius, mid_y) ;
     DrawArc(radius, 0.0, 360.0) ;
     radius = radius + increment ;
  }
}