// copy ctor
private SymbolTemplate(SymbolTemplate prototype)
{
this._modules = prototype._modules.CreateCopy();
this.ErrorCorrectionLevel = prototype.ErrorCorrectionLevel;
this.Version = prototype.Version;
this.Width = prototype.Width;
}
private SymbolTemplate(int version)
{
// See ISO/IEC 18004:2006(E), Sec. 5.3.1.1 for how versions map to sizes.
Debug.Assert(1 <= version && version <= 40);
Version = version;
Width = 21 + 4 * (version - 1);
_modules = new ModuleBlock(Width);
PopulateReservedModuleBits();
}
// Draws a square of the specified width whose top-left corner is at the specified coords
private static void DrawSquare(ModuleBlock modules, int row, int col, int width, ModuleFlag type, bool xor = false)
{
DrawRect(modules, row, col, width, width, type, xor);
}
// copy ctor
private ModuleBlock(ModuleBlock original)
{
this._buffer = (byte[])(original._buffer.Clone());
this._width = original._width;
}
private uint SelectAndApplyMaskingPattern()
{
// Masks the QR code to minimize chance of data transmission error
// See ISO/IEC 18004:2006(E), Sec. 6.8
SymbolTemplate[] candidates = new SymbolTemplate[_dataMaskPredicates.Length - 1];
for (int i = 0; i < candidates.Length; i++)
{
SymbolTemplate candidate = new SymbolTemplate(this); // copy ctor
candidate.ApplyMask(_dataMaskPredicates[i]);
candidates[i] = candidate;
}
int lowestPenaltyScoreValue = candidates[0].CalculatePenaltyScore();
int lowestPenaltyScoreIndex = 0;
for (int i = 1; i < candidates.Length; i++)
{
int candidatePenaltyScoreValue = candidates[i].CalculatePenaltyScore();
if (candidatePenaltyScoreValue < lowestPenaltyScoreValue)
{
lowestPenaltyScoreValue = candidatePenaltyScoreValue;
lowestPenaltyScoreIndex = i;
}
}
// copy the candidate modules array into me; copy by ref is fine
this._modules = candidates[lowestPenaltyScoreIndex]._modules;
return (uint)lowestPenaltyScoreIndex;
}
private static void DrawRect(ModuleBlock modules, int row, int col, int width, int height, ModuleFlag type, bool xor = false)
{
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
modules.Set(row + i, col + j, type, !xor);
}
}
}
// Draws a square of the specified width whose top-left corner is at the specified coords
private static void DrawSquare(ModuleBlock modules, int row, int col, int width, ModuleFlag type, bool xor = false)
{
DrawRect(modules, row, col, width, width, type, xor);
}