public void StartSearch(Bitmap topLeft, Bitmap topRight, Bitmap bottomLeft, Bitmap bottomRight,
Rectangle searchArea, Point startFrom, int maxCount, int tolerance)
{
int[] numArray;
_topLeft = BitmapHelper.CloneBitmap(topLeft);
_topRight = BitmapHelper.CloneBitmap(topRight);
_bottomLeft = BitmapHelper.CloneBitmap(bottomLeft);
_bottomRight = BitmapHelper.CloneBitmap(bottomRight);
base.StartSearch(topLeft, searchArea, startFrom, maxCount, tolerance);
_topLeftData = null;
_topRightData = null;
_bottomLeftData = null;
_bottomRightData = null;
try
{
_topLeftData = BitmapHelper.LockBits(_topLeft, ImageLockMode.ReadOnly);
_topRightData = BitmapHelper.LockBits(_topRight, ImageLockMode.ReadOnly);
_bottomLeftData = BitmapHelper.LockBits(_bottomLeft, ImageLockMode.ReadOnly);
_bottomRightData = BitmapHelper.LockBits(_bottomRight, ImageLockMode.ReadOnly);
numArray = new[]
{
CornerQuality(_topLeftData), CornerQuality(_topRightData), CornerQuality(_bottomLeftData),
CornerQuality(_bottomRightData)
};
}
finally
{
if (_topLeftData != null)
{
BitmapHelper.UnlockBits(_topLeft, _topLeftData);
}
if (_topRightData != null)
{
BitmapHelper.UnlockBits(_topRight, _topRightData);
}
if (_bottomLeftData != null)
{
BitmapHelper.UnlockBits(_bottomLeft, _bottomLeftData);
}
if (_bottomRightData != null)
{
BitmapHelper.UnlockBits(_bottomRight, _bottomRightData);
}
}
var num = -2147483648;
_startCorner = -1;
for (var i = 0; i < numArray.Length; i++)
{
if (numArray[i] > num)
{
num = numArray[i];
_startCorner = i;
}
}
}
public override Rectangle FindNext()
{
Rectangle rectangle;
_topLeftData = null;
_topRightData = null;
_bottomLeftData = null;
_bottomRightData = null;
try
{
_topLeftData = BitmapHelper.LockBits(_topLeft, ImageLockMode.ReadOnly);
_topRightData = BitmapHelper.LockBits(_topRight, ImageLockMode.ReadOnly);
_bottomLeftData = BitmapHelper.LockBits(_bottomLeft, ImageLockMode.ReadOnly);
_bottomRightData = BitmapHelper.LockBits(_bottomRight, ImageLockMode.ReadOnly);
rectangle = base.FindNext();
}
finally
{
if (_topLeftData != null)
{
BitmapHelper.UnlockBits(_topLeft, _topLeftData);
}
if (_topRightData != null)
{
BitmapHelper.UnlockBits(_topRight, _topRightData);
}
if (_bottomLeftData != null)
{
BitmapHelper.UnlockBits(_bottomLeft, _bottomLeftData);
}
if (_bottomRightData != null)
{
BitmapHelper.UnlockBits(_bottomRight, _bottomRightData);
}
}
return(rectangle);
}
public virtual Rectangle FindNext()
{
Rectangle empty;
_searchOnData = null;
_searchForData = null;
try
{
_searchOnData = BitmapHelper.LockBits(_searchOn, ImageLockMode.ReadOnly);
_searchForData = BitmapHelper.LockBits(_searchFor, ImageLockMode.ReadOnly);
if (_searchFinished)
{
return(Rectangle.Empty);
}
if (!_searchStarted)
{
throw new ApplicationException(
"Search is not started. Use StartSearch prior to calling FindNext");
}
if (_offset != 0)
{
goto Label_02CE;
}
_offset++;
if (!CheckLocation(_x, _y))
{
goto Label_02CE;
}
return((Rectangle)_result[_result.Count - 1]);
Label_00A3:
switch (_pos)
{
case 0:
_x0 = _x - _i + 1;
_y0 = _y - _offset;
break;
case 1:
_x0 = _x + _i;
_y0 = _y - _offset;
break;
case 2:
_x0 = _x + _offset;
_y0 = _y - _i + 1;
break;
case 3:
_x0 = _x + _offset;
_y0 = _y + _i;
break;
case 4:
_x0 = _x + _i - 1;
_y0 = _y + _offset;
break;
case 5:
_x0 = _x - _i;
_y0 = _y + _offset;
break;
case 6:
_x0 = _x - _offset;
_y0 = _y + _i - 1;
break;
case 7:
_x0 = _x - _offset;
_y0 = _y - _i;
break;
}
_pos++;
if (CheckLocation(_x0, _y0))
{
if (_result.Count <= _maxCount)
{
return((Rectangle)_result[_result.Count - 1]);
}
return(Rectangle.Empty);
}
Label_028A:
if (_pos < 8)
{
goto Label_00A3;
}
_i++;
_pos = 0;
Label_02AB:
if (_i <= _offset)
{
goto Label_028A;
}
_offset++;
_i = 1;
Label_02CE:
if (_offset <= _maxOffset)
{
goto Label_02AB;
}
_searchFinished = true;
empty = Rectangle.Empty;
}
finally
{
if (_searchForData != null)
{
BitmapHelper.UnlockBits(_searchFor, _searchForData);
}
if (_searchOnData != null)
{
BitmapHelper.UnlockBits(_searchOn, _searchOnData);
}
}
return(empty);
}
