determineGlyphWidths()

byte[] widths = new byte[this.end - this.start + 1];


        for (int i: widths) {
            BufferedImage sheet = this.sheets.get(i / 128);

            for (int j = 0; j < 128; j++) {
                // for each individual glyph...
                int width = 0;
                boolean[] isWhite = new boolean[128];

                for (int k = 0; k < 128; k++) {
                    // for each individual pixel...
                    int x = (j % 128) / 8 + (k / 8);
                    int y = (j / 128) * 8 + (k % 8);

                    isWhite[k] = sheet.getRGB(x, y) == (new Color(0xff, 0xff, 0xff)).getRGB();   // I don't trust any of this
                }

                for (int h = 127; h >= 0; h--) {
                    // for each individual pixel in reverse
                    if (isWhite[h]) {
                        int index = 127 - h;

                        width = index % 8;
                    }
                }

                widths[i] = (byte) width;
            }
        }