private void FillGraphemeClusterBoundaries(TinyFont font)
{
GlyphMetadataAppendix metadata = font.GetOrAddNewAppendix <GlyphMetadataAppendix>();
byte[] clusterBoundaries = Resources.GraphemeBreakProperty;
BitArray data = new BitArray(0);
foreach (CharacterInfo info in font.EnumerateAllCharacterInfos())
{
byte property = FindClusterProperty(clusterBoundaries, info.Codepoint);
data.AppendLsb(property, 4);
}
byte[] setData = new byte[(data.Length + 7) / 8];
data.CopyTo(setData, 0);
metadata.Sets.Add(setData);
GlyphMetadataAppendix.MetadataSetOffset offset = new GlyphMetadataAppendix.MetadataSetOffset();
offset.Id = GlyphMetadataAppendix.GraphemeSet;
offset.Bits = GlyphMetadataAppendix.MetadataSetBitLength.Four;
metadata.SetsOffsets.Add(offset);
}