The C API

Everything the Rust API does, C does. The header is the contract.

#include "daegun.h"

daegun_font *font = NULL;
if (daegun_font_open(data, len, &font) != DAEGUN_OK) return 1;

daegun_run *run = NULL;
daegun_font_shape(font, "Wave", NULL, 0, /* vertical */ false, &run);

size_t n = 0;
const uint16_t *gids = daegun_run_glyphs(run, &n);
const double *advances = daegun_run_advances(run, &n);

daegun_bitmap *bmp = NULL;
daegun_font_rasterize_glyph(font, gids[0], 32.0f, NULL, 0, &bmp);

daegun_metrics m;
daegun_bitmap_metrics(bmp, &m);
size_t pixels_len = 0;
const uint8_t *pixels = daegun_bitmap_pixels(bmp, &pixels_len);

daegun_bitmap_free(bmp);
daegun_run_free(run);
daegun_font_free(font);

Axes

daegun_axis axes[] = { { "wght", 700.0 }, { "opsz", 28.0 } };
daegun_font_shape(font, "Wave", axes, 2, false, &run);