#define _GNU_SOURCE

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

int A[] = {
//    73, 66,
//    58, 57,
//    36, 44,
    18, 32,
    16, 30,
    14, 29,
    12, 27,
};
int nA = sizeof(A)/sizeof(int);

double Z = 1.1;

static cairo_status_t
writer (void *closure, const unsigned char *data, unsigned int length)
{
    if (length == fwrite(data, 1, length, (FILE *)closure))
	return CAIRO_STATUS_SUCCESS;
    return CAIRO_STATUS_WRITE_ERROR;
}

int main(int argc, char *argv[])
{
    int i;
    cairo_t *cr;
    cairo_surface_t *surface;
    
    feenableexcept(FE_INVALID);

    surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 100, 100);
    cr = cairo_create(surface);
    cairo_surface_destroy (surface);

    cairo_move_to(cr, A[0] * Z, A[1] * Z);
    for (i = 2; i < nA; i += 6)
	cairo_curve_to(cr,
			A[i]   * Z, A[i+1] * Z,
			A[i+2] * Z, A[i+3] * Z,
			A[i+4] * Z, A[i+5] * Z);
    cairo_stroke(cr);

    cairo_surface_write_to_png_stream(surface, writer, stdout);
    cairo_destroy(cr);
    
    return 0;
}