private static void AppendDarkCell(SvgImage image, BitMatrix matrix, int offsetX, int offSetY)
{
if (matrix == null)
{
return;
}
int width = matrix.Width;
int height = matrix.Height;
var processed = new BitMatrix(width, height);
bool currentIsBlack = false;
int startPosX = 0;
int startPosY = 0;
for (int x = 0; x < width; x++)
{
int endPosX;
for (int y = 0; y < height; y++)
{
if (processed[x, y])
{
continue;
}
processed[x, y] = true;
if (matrix[x, y])
{
if (!currentIsBlack)
{
startPosX = x;
startPosY = y;
currentIsBlack = true;
}
}
else
{
if (currentIsBlack)
{
FindMaximumRectangle(matrix, processed, startPosX, startPosY, y, out endPosX);
image.AddRec(startPosX + offsetX, startPosY + offSetY, endPosX - startPosX + 1, y - startPosY);
currentIsBlack = false;
}
}
}
if (currentIsBlack)
{
FindMaximumRectangle(matrix, processed, startPosX, startPosY, height, out endPosX);
image.AddRec(startPosX + offsetX, startPosY + offSetY, endPosX - startPosX + 1, height - startPosY);
currentIsBlack = false;
}
}
}