public LineInfo(int pos, LineDirction lineType)
{
this.LineType = lineType;
this.Pos = pos;
this.Start = -1;
this.End = -1;
this.MinScanLength = TableEraser.Env.MinScanLength;
}
private int SearchBlackStart(LockBitmap img, int x, int y, int maxLength, LineDirction lineType)
{
Color color = lineType == LineDirction.Horizontal ? img.GetPixel(x, y) : img.GetPixel(y, x);
while (color.ToArgb() != Color.Black.ToArgb() && x < maxLength)
{
x++;
color = lineType == LineDirction.Horizontal ? img.GetPixel(x, y) : img.GetPixel(y, x);
}
return(x);
}
private List <MergeLineInfo> ScanLines(LockBitmap img, LineDirction lineType)
{
Counter counter = new Counter(outputHanler);
counter.Start("ScanLines -" + lineType.ToString());
LineInfo line = null;
List <LineInfo> lines = new List <LineInfo>();
int maxStep = lineType == LineDirction.Horizontal ? img.Height : img.Width;
int maxLength = lineType == LineDirction.Horizontal ? img.Width : img.Height;
int ystep = 1;
int xstep = 1;
int bigStep = Env.HighSpeedStep;
for (int y = 0; y < maxStep; y += ystep)
{
List <LineInfo> currentLines = new List <LineInfo>();
line = new LineInfo(y, lineType);
for (int x = 0; x < maxLength; x += xstep)
{
Color color = lineType == LineDirction.Horizontal ? img.GetPixel(x, y) : img.GetPixel(y, x);
if (color.ToArgb() != Color.Black.ToArgb())
{
if (line.Start > -1)
{
currentLines.Add(line);
line = new LineInfo(y, lineType);
}
xstep = bigStep;
}
else
{
if (xstep == bigStep && x > bigStep - 1)
{
x = SearchBlackStart(img, x - bigStep + 1, y, maxLength, lineType);
}
xstep = 1;
if (line.Start == -1)
{
line.Start = x;
line.End = x;
}
else
{
line.End = x;
}
}
}
if (line.Start != -1)
{
currentLines.Add(line);
}
if (currentLines.Count > 0)
{
List <LineInfo> dotLines = MergeDotLine(currentLines, Env.MaxDotSpace);
foreach (LineInfo dotLine in dotLines)
{
if (dotLine.isLine())
{
lines.Add(dotLine);
}
}
}
currentLines = null;
}
counter.End();
return(GetMergeLines(lines));
}
