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font: web canvas sprite font can write to atlas

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This commit is contained in:
Mitchell Hashimoto
2022-12-13 22:01:13 -08:00
parent b48a0db040
commit bf054e5b44
3 changed files with 122 additions and 12 deletions
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26
example/app.ts
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@@ -35,6 +35,7 @@ fetch(url.href).then(response =>
group_new,
group_free,
group_add_face,
group_init_sprite_face,
group_index_for_codepoint,
group_render_glyph,
group_cache_new,
@@ -85,23 +86,32 @@ fetch(url.href).then(response =>
group_add_face(group, 0 /* regular */, deferred_face_new(font_name.ptr, font_name.len, 0 /* text */));
group_add_face(group, 0 /* regular */, deferred_face_new(font_name.ptr, font_name.len, 1 /* emoji */));
// Initialize our sprite font, without this we just use the browser.
group_init_sprite_face(group);
// Create our group cache
const group_cache = group_cache_new(group);
// Render a glyph
for (let i = 33; i <= 126; i++) {
// for (let i = 33; i <= 126; i++) {
// const font_idx = group_cache_index_for_codepoint(group_cache, i, 0, -1);
// group_cache_render_glyph(group_cache, font_idx, i, 0);
// //face_render_glyph(face, atlas, i);
// }
//
// const emoji = ["🐏","🌞","🌚","🍱","💿","🐈","📃","📀","🕡","🙃"];
// for (let i = 0; i < emoji.length; i++) {
// const cp = emoji[i].codePointAt(0);
// const font_idx = group_cache_index_for_codepoint(group_cache, cp, 0, -1 /* best choice */);
// group_cache_render_glyph(group_cache, font_idx, cp, 0);
// }
for (let i = 0x2500; i <= 0x257F; i++) {
const font_idx = group_cache_index_for_codepoint(group_cache, i, 0, -1);
group_cache_render_glyph(group_cache, font_idx, i, 0);
//face_render_glyph(face, atlas, i);
}
const emoji = ["🐏","🌞","🌚","🍱","💿","🐈","📃","📀","🕡","🙃"];
for (let i = 0; i < emoji.length; i++) {
const cp = emoji[i].codePointAt(0);
const font_idx = group_cache_index_for_codepoint(group_cache, cp, 0, -1 /* best choice */);
group_cache_render_glyph(group_cache, font_idx, cp, 0);
}
//face_render_glyph(face, atlas, "橋".codePointAt(0));
//face_render_glyph(face, atlas, "p".codePointAt(0));