iTextSharp.text.pdf.TrueTypeFont.ReadBbox C# (CSharp) Метод

        private void ReadBbox()
        {
            int[] tableLocation;
            tables.TryGetValue("head", out tableLocation);
            if (tableLocation == null)
                throw new DocumentException(MessageLocalization.GetComposedMessage("table.1.does.not.exist.in.2", "head", fileName + style));
            rf.Seek(tableLocation[0] + TrueTypeFontSubSet.HEAD_LOCA_FORMAT_OFFSET);
            bool locaShortTable = (rf.ReadUnsignedShort() == 0);
            tables.TryGetValue("loca", out tableLocation);
            if (tableLocation == null)
                return;
            rf.Seek(tableLocation[0]);
            int[] locaTable;
            if (locaShortTable) {
                int entries = tableLocation[1] / 2;
                locaTable = new int[entries];
                for (int k = 0; k < entries; ++k)
                    locaTable[k] = rf.ReadUnsignedShort() * 2;
            }
            else {
                int entries = tableLocation[1] / 4;
                locaTable = new int[entries];
                for (int k = 0; k < entries; ++k)
                    locaTable[k] = rf.ReadInt();
            }
            tables.TryGetValue("glyf", out tableLocation);
            if (tableLocation == null)
                throw new DocumentException(MessageLocalization.GetComposedMessage("table.1.does.not.exist.in.2", "glyf", fileName + style));
            int tableGlyphOffset = tableLocation[0];
            bboxes = new int[locaTable.Length - 1][];
            for (int glyph = 0; glyph < locaTable.Length - 1; ++glyph) {
                int start = locaTable[glyph];
                if (start != locaTable[glyph + 1]) {
                    rf.Seek(tableGlyphOffset + start + 2);
                    bboxes[glyph] = new int[]{
                        (rf.ReadShort() * 1000) / head.unitsPerEm,
                        (rf.ReadShort() * 1000) / head.unitsPerEm,
                        (rf.ReadShort() * 1000) / head.unitsPerEm,
                        (rf.ReadShort() * 1000) / head.unitsPerEm};
                }
            }
        }