Class MaskUtil

java.lang.Object
com.itextpdf.barcodes.qrcode.MaskUtil

final class MaskUtil extends Object
  • Constructor Details

    • MaskUtil

      private MaskUtil()
  • Method Details

    • applyMaskPenaltyRule1

      public static int applyMaskPenaltyRule1(ByteMatrix matrix)
      Apply mask penalty rule 1 and return the penalty. Find repetitive cells with the same color and give penalty to them. Example: 00000 or 11111.
      Parameters:
      matrix - ByteMatrix to apply the penalty rule to
      Returns:
      the rule 1 penalty
    • applyMaskPenaltyRule2

      public static int applyMaskPenaltyRule2(ByteMatrix matrix)
      Apply mask penalty rule 2 and return the penalty. Find 2x2 blocks with the same color and give penalty to them.
      Parameters:
      matrix - ByteMatrix to apply the penalty rule to
      Returns:
      the rule 2 penalty
    • applyMaskPenaltyRule3

      public static int applyMaskPenaltyRule3(ByteMatrix matrix)
      Apply mask penalty rule 3 and return the penalty. Find consecutive cells of 00001011101 or 10111010000, and give penalty to them. If we find patterns like 000010111010000, we give penalties twice (i.e. 40 * 2).
      Parameters:
      matrix - ByteMatrix to apply the penalty rule to
      Returns:
      the rule 3 penalty
    • applyMaskPenaltyRule4

      public static int applyMaskPenaltyRule4(ByteMatrix matrix)
      Apply mask penalty rule 4 and return the penalty. Calculate the ratio of dark cells and give penalty if the ratio is far from 50%. It gives 10 penalty for 5% distance. Examples: - 0% => 100 - 40% => 20 - 45% => 10 - 50% => 0 - 55% => 10 - 55% => 20 - 100% => 100
      Parameters:
      matrix - Bytematrix to apply the rule to
      Returns:
      the rule 4 penalty
    • getDataMaskBit

      public static boolean getDataMaskBit(int maskPattern, int x, int y)
      Return the mask bit for "getMaskPattern" at "x" and "y". See 8.8 of JISX0510:2004 for mask pattern conditions.
      Parameters:
      maskPattern - masking pattern to use
      x - width coordiante
      y - height-coordinate
      Returns:
      the mask bit at that position
    • applyMaskPenaltyRule1Internal

      private static int applyMaskPenaltyRule1Internal(ByteMatrix matrix, boolean isHorizontal)