/// <summary>
/// The main working method. Handles the flow from creating a bitmap
/// from the scanned image to analysing its digits and solving the sudoku.
/// </summary>
/// <param name="pixels">The scanned image as a one-dimensional array of Colors.</param>
public void Worker(Color[] pixels)
{
try
{
var timer = System.Diagnostics.Stopwatch.StartNew();
//cut out the sudoku part
pixels = ArrayHandling.Cut(pixels, textureWidth, textureHeight,
(textureWidth - side) / 2, (textureHeight - side) / 2, side, side);
Status = "Creating Bitmap"; //the current status is displayed while the background thread is active
bool[] bits = Bitify(pixels, side, side, HorizontalChunks, VerticalChunks); //generate a "black-and-white" bitmap from the picture
int[] coords;
int searchRadius;
Status = "Finding Corners";
int[][] corners = OCR.FindCorners2(bits, side, side, CornerQueueLength); //find the corners of the sudoku
if (corners == null)
{
Popup.queued = new KeyValuePair <string, System.Action>(OCR.NoSudokuMessage, null);
corners = new int[][] { new int[] { 0, 0 }, new int[] { 0, 0 }, new int[] { 0, 0 }, new int[] { 0, 0 } };
}
#if WRITE_IMAGES_TO_DISK
foreach (int[] corner in corners)
{
colorq.Enqueue(new KeyValuePair <int, Color>(corner[0] + corner[1] * side, Color.yellow));
}
#endif
searchRadius = Mathf.RoundToInt(SearchRadiusFactor * Mathf.Sqrt(
Mathf.Pow((corners[2][0] - corners[0][0]) / 9f, 2) +
Mathf.Pow((corners[2][1] - corners[0][1]) / 9f, 2)
));
Status = "Finding Digits";
coords = OCR.FindDigitCoordinates(corners, side); //calculate where the digits should be
Status = "Identifying Digits";
unsolvedSudoku = OCR.GetSudoku(bits, side, side, coords, searchRadius, storedBitmaps, InstantMatchPercent, MaxStoredBitmapsPerDigit); //identify all digits
allZero = ArrayHandling.OnlyZeroes(unsolvedSudoku);
var sb = new System.Text.StringBuilder();
for (int y = 8; y >= 0; y--)
{
for (int x = 0; x < 9; x++)
{
sb.Append(unsolvedSudoku[x, y]);
}
sb.AppendLine();
}
print(sb);
Status = "Solving Sudoku";
solvedSudoku = ArrayHandling.Solve(unsolvedSudoku, ref success); //solve the sudoku
if (!success)
{
Popup.queued = new KeyValuePair <string, System.Action>(CannotSolveMessage, null);
}
sb = new System.Text.StringBuilder();
for (int y = 8; y >= 0; y--)
{
for (int x = 0; x < 9; x++)
{
sb.Append(solvedSudoku[x, y]);
}
sb.AppendLine();
}
print(sb);
#if WRITE_IMAGES_TO_DISK
Status = "Rendering Debug Picture";
for (int i = 0; i < pixels.Length; i++)
{
pixels[i] = bits[i] ? Color.white : Color.black;
}
while (colorq.Count > 0)
{
var kvp = colorq.Dequeue();
if (kvp.Key >= 0 && kvp.Key < pixels.Length)
{
pixels[kvp.Key] = kvp.Value;
}
}
#endif
debugPicture = pixels;
timer.Stop();
print("Done");
print("Time: " + timer.ElapsedMilliseconds + " ms");
Status = StatusDone; //signal to the main thread that the solved sudoku is availible
}
catch (System.Exception e)
{
print(e);
Status = StatusError + e.Message;
}
}