137 lines
3.1 KiB
C
137 lines
3.1 KiB
C
#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <math.h>
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#include "gd.h"
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#define DEGTORAD(x) ( (x) * (2.0 * 3.14159265) / 360.0 )
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void
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doerr (FILE * err, const char *msg)
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{
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if (err) {
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fprintf (err, "%s\n", msg);
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fflush (err);
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}
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}
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void
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dowheel (gdImagePtr im, int color, char *fontfile, int fontsize,
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double angle, int x, int y, int offset, char *string)
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{
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int brect[8];
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FILE *err;
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double curangrads, curang, x0, y0;
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char *cp;
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err = fopen ("err.out", "a");
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doerr (err, "------------- New fontwheel --------------");
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doerr (err, fontfile);
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doerr (err, string);
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doerr (err, "------------------------------------------");
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for (curang = 0.0; curang < 360.0; curang += angle) {
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curangrads = DEGTORAD(curang);
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x0 = x + cos (curangrads) * offset;
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y0 = y - sin (curangrads) * offset;
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/* The case of newlines is taken care of in the gdImageStringTTF call */
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cp = gdImageStringFT (im, brect, color, fontfile, fontsize,
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curangrads, x0, y0, string);
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if (cp)
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doerr (err, cp);
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gdImagePolygon (im, (gdPointPtr)brect, 4, color);
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}
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fclose (err);
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}
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#if 0
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void
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dolines (gdImagePtr im, int color, double incr, int x, int y, int offset,
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int length)
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{
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double curang;
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double angle;
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double x0, x1, y0, y1;
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for (curang = 0.0; curang < 360.0; curang += incr) {
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angle = curang * (2.0 * 3.14159265) / 360.0;
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x0 = cos (angle) * offset + x;
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x1 = cos (angle) * (offset + length) + x;
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y0 = sin (angle) * offset + y;
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y1 = sin (angle) * (offset + length) + y;
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gdImageLine (im, x0, y0, x1, y1, color);
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}
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}
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#endif
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void
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dotest (char *font, int size, double incr,
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int w, int h, char *string, const char *filename)
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{
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gdImagePtr im;
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FILE *out;
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int bg;
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int fc;
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#if 0
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int lc;
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#endif
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int xc = w / 2;
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int yc = h / 2;
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im = gdImageCreate (w, h);
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bg = gdImageColorAllocate (im, 0, 0, 0);
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gdImageFilledRectangle (im, 1, 1, w - 1, h - 1, bg);
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fc = gdImageColorAllocate (im, 255, 192, 192);
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#if 0
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lc = gdImageColorAllocate (im, 192, 255, 255);
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#endif
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out = fopen (filename, "wb");
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dowheel (im, fc, font, size, incr, xc, yc, 20, string);
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#if 0
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dolines (im, lc, incr, xc, yc, 20, 120);
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#endif
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#if defined(HAVE_LIBPNG)
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gdImagePng (im, out);
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#elif defined(HAVE_LIBJPEG)
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gdImageJpeg (im, out, -1);
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#endif
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fclose (out);
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}
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int
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main(void)
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{
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#if defined(HAVE_LIBPNG)
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dotest ("times", 16, 20.0, 400, 400, "Hello, there!",
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"fontwheeltest1.png");
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dotest ("times", 16, 30.0, 400, 400, "Hello, there!",
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"fontwheeltest2.png");
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dotest ("arial", 16, 45.0, 400, 400, "Hello, there!",
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"fontwheeltest3.png");
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dotest ("arial", 16, 90.0, 400, 400, "Hello\nthere!",
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"fontwheeltest4.png");
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#elif defined(HAVE_LIBJPEG)
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dotest ("times", 16, 20.0, 400, 400, "Hello, there!",
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"fontwheeltest1.jpeg");
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dotest ("times", 16, 30.0, 400, 400, "Hello, there!",
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"fontwheeltest2.jpeg");
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dotest ("arial", 16, 45.0, 400, 400, "Hello, there!",
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"fontwheeltest3.jpeg");
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dotest ("arial", 16, 90.0, 400, 400, "Hello\nthere!",
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"fontwheeltest4.jpeg");
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#else
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fprintf(stderr, "no PNG or JPEG support\n");
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#endif
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return 0;
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}
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