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Amiga Format CD 40
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Amiga Format CD40 (1999-05-11)(Future Publishing)(GB)(Track 1 of 3)[!][issue 1999-06].iso
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-seriously_amiga-
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misc
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pdflib
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pdfclock.c
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C/C++ Source or Header
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1999-03-24
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/* pdfclock.c
* Copyright (C) 1997-98 Thomas Merz. All rights reserved.
*
* A little PDFlib application to draw an analog clock.
*/
#ifdef DOS
#include <process.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#ifdef POSIX
#include <unistd.h>
#endif
#include "pdf.h"
static void
usage(void)
{
fprintf(stderr,
"pdfclock - generate clock in PDF format. (C) Thomas Merz 1997-98\n");
fprintf(stderr, "usage: pdfclock [-c pagecount] -o outfile\n");
exit(1);
}
#define RADIUS 200.0
#define MARGIN 20.0
void
main(int argc, char *argv[])
{
PDF_info *info;
FILE *pdffile = NULL;
PDF *p;
int opt;
float alpha;
time_t timer;
struct tm ltime;
int pagecount = 1;
info = PDF_get_info();
info->Title = "PDF Clock";
info->Creator = "pdfclock";
while ((opt = getopt(argc, argv, "c:o:")) != -1)
switch (opt) {
case 'c':
pagecount = atoi(optarg);
if (pagecount < 0)
pagecount = 1;
break;
case 'o':
pdffile = fopen(optarg, WRITEMODE);
if (pdffile == NULL) {
fprintf(stderr,
"pdfclock error: cannot open output file %s.\n",optarg);
usage();
}
break;
}
if (pdffile == (FILE *) NULL)
usage();
p = PDF_open(pdffile, info);
while (pagecount-- > 0) {
PDF_begin_page(p, 2 * (RADIUS + MARGIN), 2 * (RADIUS + MARGIN));
PDF_set_transition(p, trans_wipe);
PDF_set_duration(p, 0.5);
PDF_translate(p, RADIUS + MARGIN, RADIUS + MARGIN);
PDF_setrgbcolor(p, 0.0, 0.0, 1.0);
PDF_save(p);
/* minute strokes */
PDF_setlinewidth(p, 2.0);
for (alpha = 0; alpha < 360; alpha += 6)
{
PDF_rotate(p, 6.0);
PDF_moveto(p, RADIUS, 0.0);
PDF_lineto(p, RADIUS-MARGIN/3, 0.0);
PDF_stroke(p);
}
PDF_restore(p);
PDF_save(p);
/* 5 minute strokes */
PDF_setlinewidth(p, 3.0);
for (alpha = 0; alpha < 360; alpha += 30)
{
PDF_rotate(p, 30.0);
PDF_moveto(p, RADIUS, 0.0);
PDF_lineto(p, RADIUS-MARGIN, 0.0);
PDF_stroke(p);
}
time(&timer);
ltime = *localtime(&timer);
/* draw hour hand */
PDF_save(p);
PDF_rotate(p,
(float)(-((ltime.tm_min/60.0) + ltime.tm_hour - 3.0) * 30.0));
PDF_moveto(p, -RADIUS/10, -RADIUS/20);
PDF_lineto(p, RADIUS/2, 0.0);
PDF_lineto(p, -RADIUS/10, RADIUS/20);
PDF_closepath(p);
PDF_fill(p);
PDF_restore(p);
/* draw minute hand */
PDF_save(p);
PDF_rotate(p,
(float) (-((ltime.tm_sec/60.0) + ltime.tm_min - 15.0) * 6.0));
PDF_moveto(p, -RADIUS/10, -RADIUS/20);
PDF_lineto(p, RADIUS * 0.8, 0.0);
PDF_lineto(p, -RADIUS/10, RADIUS/20);
PDF_closepath(p);
PDF_fill(p);
PDF_restore(p);
/* draw second hand */
PDF_setrgbcolor(p, 1.0, 0.0, 0.0);
PDF_setlinewidth(p, 2);
PDF_save(p);
PDF_rotate(p, (float) -((ltime.tm_sec - 15.0) * 6.0));
PDF_moveto(p, -RADIUS/5, 0.0);
PDF_lineto(p, RADIUS, 0.0);
PDF_stroke(p);
PDF_restore(p);
/* draw little circle at center */
PDF_circle(p, 0, 0, RADIUS/30);
PDF_fill(p);
PDF_restore(p);
PDF_end_page(p);
sleep(1); /* we want to see the clock hand move */
}
PDF_close(p);
exit(0);
}