ClassLibraryWeiBao/QR二维码/Masking/Scoring/Penalty3.cs

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namespace Gma.QrCodeNet.Encoding.Masking.Scoring
{
	/// <summary>
	/// ISO/IEC 18004:2000 Chapter 8.8.2 Page 52
	/// </summary>
	internal class Penalty3 : Penalty
    {
        /// <summary>
		/// Calculate penalty value for Third rule.
		/// </summary>
        internal override int PenaltyCalculate(BitMatrix matrix)
        {
            return PenaltyCalculation(matrix, true) + PenaltyCalculation(matrix, false);
        }
        
        private int PenaltyCalculation(BitMatrix matrix, bool isHorizontal)
        {
        	int i = 0;
        	int j = 1;
        	int penalty = 0;
        	int width = matrix.Width;
        	bool bit;
        	while(i < width)
        	{
        		while(j < width - 5)
        		{
        			
        			bit = isHorizontal ? matrix[j + 4, i]
        				: matrix[i, j + 4];
        			if(!bit)
        			{
        				bit = isHorizontal ? matrix[j, i]
        					: matrix[i, j];
        				if(!bit)
        				{
        					penalty += PatternCheck(matrix, i, j, isHorizontal);
        					j += 4;
        				}
        				else
        					j += 4;
        			}
        			else
        			{
        				for(int num = 4; num > 0; num--)
        				{
        					bit = bit = isHorizontal ? matrix[j + num, i]
        						: matrix[i, j + num];
        					if(!bit)
        					{
        						j += num;
        						break;
        					}
        					if(num == 1)
        						j += 5;
        				}
        			}
        		}
        		j = 0;
        		i++;
        	}