Method Pack

Source/Graphics/text.cpp:761–801

}

bool TextAtlas::Pack(unsigned char* pixels, int atlas_dims[2],
                     int font_face_id, int lowercase_font_face_id,
                     FontRenderer* font_renderer, std::vector<CharacterInfo>& alphabet) {
    PROFILER_ZONE(g_profiler_ctx, "TextAtlas::Pack");

    for (int i = 0, len = atlas_dims[0] * atlas_dims[1]; i < len; ++i) {
        pixels[i] = 0;
    }
    int draw[] = {0, 0};
    int max_height = 0;

    std::vector<CharacterInfo>::iterator character = alphabet.begin();

    for (; character != alphabet.end(); character++) {
        bool lowercase = (character->lowercase && lowercase_font_face_id != -1);
        FT_GlyphSlot slot =
            font_renderer->RenderCharacterBitmap(
                lowercase ? lowercase_font_face_id : font_face_id,
                character->codepoint, FontRenderer::RCB_RENDER);
        FT_Bitmap* bitmap = &slot->bitmap;
        if (character->width + draw[0] > atlas_dims[0]) {
            draw[0] = 0;
            draw[1] += max_height;
            max_height = 0;
        }
        character->pos[0] = draw[0];
        character->pos[1] = draw[1];
        max_height = max(max_height, character->height);
        for (int x = 0; x < character->width; ++x) {
            for (int y = 0; y < character->height; ++y) {
                if (draw[0] + x < atlas_dims[0] && draw[1] + y < atlas_dims[1]) {
                    pixels[(draw[1] + y) * atlas_dims[0] + draw[0] + x] = bitmap->buffer[y * character->width + x];
                } else {
                    return false;
                }
            }
        }
        draw[0] += character->width;
    }
    return true;
}

void TextAtlas::Create(const char* path, int _pixel_height, FontRenderer* font_renderer, int flags) {
    PROFILER_ZONE(g_profiler_ctx, "TextAtlas::Create");