iTextSharp.text.pdf.ColumnText.ConvertColumn C# (CSharp) Метод

    protected List<float []> ConvertColumn(float[] cLine) {
        if (cLine.Length < 4)
            throw new Exception(MessageLocalization.GetComposedMessage("no.valid.column.line.found"));
        List<float []> cc = new List<float []>();
        for (int k = 0; k < cLine.Length - 2; k += 2) {
            float x1 = cLine[k];
            float y1 = cLine[k + 1];
            float x2 = cLine[k + 2];
            float y2 = cLine[k + 3];
            if (y1 == y2)
                continue;
            // x = ay + b
            float a = (x1 - x2) / (y1 - y2);
            float b = x1 - a * y1;
            float[] r = new float[4];
            r[0] = Math.Min(y1, y2);
            r[1] = Math.Max(y1, y2);
            r[2] = a;
            r[3] = b;
            cc.Add(r);
            maxY = Math.Max(maxY, r[1]);
            minY = Math.Min(minY, r[0]);
        }
        if (cc.Count == 0)
            throw new Exception(MessageLocalization.GetComposedMessage("no.valid.column.line.found"));
        return cc;
    }