internal Point Locate(Needle needle)
{
// Points 0... // RearPoints 0... // Sizes 1...
int firstRow = needle.StrongestPoint.Y * Size.Width;
int firstRowFirstPixel = firstRow + needle.StrongestPoint.X;
int lastRearRow = needle.StrongestRearPoint.Y * Size.Width;
int lastRow = Pixels.Length - lastRearRow;
int lastRowLastPixel = lastRow - needle.StrongestRearPoint.X;
Point result = new Point(-1, -1);
Parallel.For(firstRowFirstPixel, lastRowLastPixel, (index, state) => {
if (MatchPixel(needle.StrongestPixel, Pixels[index]) == false)
{
return;
}
Point point = IndexToPoint(index);
point.Offset(needle.StrongestPoint.X * -1, needle.StrongestPoint.Y * -1);
if (MatchLocation(needle, point) == false)
{
return;
}
state.Stop();
result = point;
});
return(result);
}
internal bool MatchLocation(Needle needle, Point startPoint)
{
bool result = true;
Parallel.ForEach(needle.Pixels, (pixel, state, index) => {
int x = startPoint.X + (int)(index % needle.Size.Width);
int y = startPoint.Y + (int)(index / needle.Size.Width);
if (MatchPixel(pixel, GetPixel(x, y)))
{
return;
}
state.Stop();
result = false;
});
return(result);
}
internal bool Contains(Needle needle) => Locate(needle).X >= 0;
