//precision [0..255]
public string ParseCorrectBitmap(Bitmap bitmap)
{
var drawingR = HexMathHelper.GetDrawingR(_r, _distanceBetweenHexes);
var width = bitmap.Width;
var height = bitmap.Height;
var centerPoint = new PointF(width / 2f, height / 2f);
var centerHexagonDataString = ParseHexagon(bitmap, centerPoint, drawingR);
var metaData = BinaryHelper.ToBoolArray(Reverse(centerHexagonDataString));
var useLargeAlphabet = metaData[0];
_activeAlphabet = metaData[0] ? _largeAlphabet : _alphabet;
var imageActiveLayer = 0;
for (int i = metaData.Length - 1; i >= 1; i--)
{
imageActiveLayer += (metaData[i] ? 1 : 0) * (int)Math.Pow(2, metaData.Length - i - 1);
}
var sumHexagons = HexMathHelper.GetLayerSumHexagonsCount(imageActiveLayer) - 1;
var binaryStringBuilder = new StringBuilder(sumHexagons * 6);
for (int index = sumHexagons - 1; index >= 0; index--)
{
var position = index; //индекс символа в текущем слое
var currentLayer = 1; //вычисляем слой буквы
HexMathHelper.GetItemLayer(ref position, ref currentLayer);
var hexesInSide = HexMathHelper.GetHexagonsInSide(currentLayer);
var hexagonPoint = centerPoint;
HexMathHelper.TranlateToTopRightCorner(ref hexagonPoint, drawingR, currentLayer);
HexMathHelper.TranslatePointAroundHexagon(ref hexagonPoint, position, hexesInSide, drawingR);
var hexagonDataString = ParseHexagon(bitmap, hexagonPoint, drawingR);
binaryStringBuilder.Append(hexagonDataString);
}
var binaryString = Reverse(binaryStringBuilder.ToString());
return(FromBinaryString(binaryString, useLargeAlphabet));
}
public Bitmap GenerateBitmap(string content)
{
if (content.Length == 0)
{
throw new IndexOutOfRangeException("Content Length 0");
}
//если хотя бы 1 символ в обычном алфавите отсутствует
var useLargeAlphabet = content.Any(c => !_alphabet.Contains(c));
//длина бинарного символа (кол-во бит на символ)
var binarySymbolLength = GetAlphabetBinaryDigits(useLargeAlphabet);
var sb = new StringBuilder(content.Length * binarySymbolLength);
_activeAlphabet = useLargeAlphabet ? _largeAlphabet : _alphabet;
foreach (var t in content)
{
sb.Append(BinaryHelper.ToBinaryString(Array.IndexOf(_activeAlphabet, t), binarySymbolLength));
}
var binaryString = sb.ToString();
if (binaryString.Length > HexMathHelper.GetLayerSumHexagonsCount(32) * 6)
{
throw new IndexOutOfRangeException("Message is too long");
}
var binaryPieces = BinaryHelper.DivideBy6(binaryString);
var maxUsedIndex = binaryPieces.Count - 1;
var maxUsedLayer = 0;
HexMathHelper.GetItemLayer(ref maxUsedIndex, ref maxUsedLayer);
var drawingR = HexMathHelper.GetDrawingR(_r, _distanceBetweenHexes);
var width = HexMathHelper.GetWidth(maxUsedLayer, _r, _distanceBetweenHexes) + 1;
var height = HexMathHelper.GetHeight(maxUsedLayer, _r, _distanceBetweenHexes) + 1;
var bitmap = new Bitmap((int)width, (int)height);
var graphics = Graphics.FromImage(bitmap);
graphics.FillRectangle(Brushes.White, 0, 0, width, height);
var maxUsedLayerBinaryString = Convert.ToString(maxUsedLayer, 2);
maxUsedLayerBinaryString = maxUsedLayerBinaryString.PadLeft(5, '0');
var maxUserLayerBoolArray = BinaryHelper.ToBoolArray(maxUsedLayerBinaryString);
var centerPoint = new PointF(width / 2f, height / 2f);
var metaData = new bool[6];
metaData[0] = useLargeAlphabet;
for (int i = 0; i < maxUserLayerBoolArray.Length; i++)
{
metaData[i + 1] = maxUserLayerBoolArray[i];
}
//graphics.DrawLine(Pens.DarkSlateGray, centerX, 0, centerX, height);
//graphics.DrawLine(Pens.DarkSlateGray, 0, centerY, width, centerY);
DrawHexagon(centerPoint, _r, graphics, metaData);
for (var i = 0; i < HexMathHelper.GetLayerSumHexagonsCount(maxUsedLayer) - 1; i++)
{
bool[] binaryPiece;
if (i < binaryPieces.Count)
{
binaryPiece = BinaryHelper.ToBoolArray(binaryPieces[i]);
}
else
{
binaryPiece = new[] { false, false, false, false, false, false };
}
var position = i; //индекс символа в текущем слое
var currentLayer = 1; //вычисляем слой буквы
HexMathHelper.GetItemLayer(ref position, ref currentLayer);
var hexesInSide = HexMathHelper.GetHexagonsInSide(currentLayer);
var hexagonPoint = centerPoint;
HexMathHelper.TranlateToTopRightCorner(ref hexagonPoint, drawingR, currentLayer);
HexMathHelper.TranslatePointAroundHexagon(ref hexagonPoint, position, hexesInSide, drawingR);
//рисуем гексагон
DrawHexagon(hexagonPoint, _r, graphics, binaryPiece);
}
graphics.Dispose();
return(bitmap);
}