public static bool GetMask(MaskPattern maskPattern, int i, int j)
{
switch (maskPattern)
{
case MaskPattern.Pattern000:
return((i + j) % 2 == 0);
case MaskPattern.Pattern001:
return(i % 2 == 0);
case MaskPattern.Pattern010:
return(j % 3 == 0);
case MaskPattern.Pattern011:
return((i + j) % 3 == 0);
case MaskPattern.Pattern100:
return((i / 2 + j / 3) % 2 == 0);
case MaskPattern.Pattern101:
return((i * j) % 2 + (i * j) % 3 == 0);
case MaskPattern.Pattern110:
return(((i * j) % 2 + (i * j) % 3) % 2 == 0);
case MaskPattern.Pattern111:
return(((i * j) % 3 + (i + j) % 2) % 2 == 0);
default:
throw new ArgumentException("bad maskPattern:" + maskPattern);
}
}
private void MapData(byte[] data, MaskPattern maskPattern)
{
var inc = -1;
var row = _moduleCount - 1;
var bitIndex = 7;
var byteIndex = 0;
for (var col = _moduleCount - 1; col > 0; col -= 2)
{
if (col == 6)
{
col -= 1;
}
while (true)
{
for (var c = 0; c < 2; c += 1)
{
if (_modules[row, col - c] == null)
{
var dark = false;
if (byteIndex < data.Length)
{
dark = (((uint)data[byteIndex] >> bitIndex) & 1) == 1;
}
var mask = QRUtil.GetMask(maskPattern, row, col - c);
if (mask)
{
dark = !dark;
}
_modules[row, col - c] = dark;
bitIndex -= 1;
if (bitIndex == -1)
{
byteIndex += 1;
bitIndex = 7;
}
}
}
row += inc;
if (row < 0 || _moduleCount <= row)
{
row -= inc;
inc = -inc;
break;
}
}
}
}
private MaskPattern GetBestMaskPattern()
{
var minLostPoint = 0;
MaskPattern pattern = 0;
for (var i = 0; i < 8; i += 1)
{
MakeImpl(true, (MaskPattern)i);
var lostPoint = QRUtil.GetLostPoint(this);
if (i == 0 || minLostPoint > lostPoint)
{
minLostPoint = lostPoint;
pattern = (MaskPattern)i;
}
}
return(pattern);
}
private void SetupTypeInfo(bool test, MaskPattern maskPattern)
{
var data = ((int)_errorCorrectLevel << 3) | (int)maskPattern;
var bits = QRUtil.GetBchTypeInfo(data);
// vertical
for (var i = 0; i < 15; i += 1)
{
var mod = (!test && ((bits >> i) & 1) == 1);
if (i < 6)
{
_modules[i, 8] = mod;
}
else if (i < 8)
{
_modules[i + 1, 8] = mod;
}
else
{
_modules[_moduleCount - 15 + i, 8] = mod;
}
}
// horizontal
for (var i = 0; i < 15; i += 1)
{
var mod = (!test && ((bits >> i) & 1) == 1);
if (i < 8)
{
_modules[8, _moduleCount - i - 1] = mod;
}
else if (i < 9)
{
_modules[8, 15 - i - 1 + 1] = mod;
}
else
{
_modules[8, 15 - i - 1] = mod;
}
}
// fixed module
_modules[_moduleCount - 8, 8] = (!test);
}
private void MakeImpl(bool test, MaskPattern maskPattern)
{
_moduleCount = _typeNumber * 4 + 17;
_modules = new bool?[_moduleCount, _moduleCount];
SetupPositionProbePattern(0, 0);
SetupPositionProbePattern(_moduleCount - 7, 0);
SetupPositionProbePattern(0, _moduleCount - 7);
SetupPositionAdjustPattern();
SetupTimingPattern();
SetupTypeInfo(test, maskPattern);
if (_typeNumber >= 7)
{
SetupTypeNumber(test);
}
if (_dataCache == null)
{
_dataCache = CreateData(_typeNumber, _errorCorrectLevel, _dataList);
}
MapData(_dataCache, maskPattern);
}
protected MaskAttribute(string matchPattern, string replacePattern) : this()
{
Pattern = new MaskPattern(matchPattern, replacePattern);
}
protected MaskAttribute()
{
Pattern = new MaskPattern(string.Empty, string.Empty);
}
