public static List <Color> GetColors(LockBitmap lockb, PointGroup pg)
{
List <Color> colors = new List <Color>();
if (!lockb.Locked)
{
throw new InvalidOperationException("Bits must be locked to get colors.");
}
foreach (var point in pg.Points)
{
if (point.X < 0 || point.X >= lockb.Width)
{
throw new InvalidOperationException($"Invalid point x {point.X} must be between 0 and {lockb.Width}");
}
else if (point.Y < 0 || point.Y >= lockb.Width)
{
throw new InvalidOperationException($"Invalid point x {point.Y} must be between 0 and {lockb.Height}");
}
Color col = lockb.GetPixel(point.X, point.Y);
colors.Add(col);
}
return(colors);
}
public PointGroup OffsetCopy(int x, int y)
{
PointGroup points = new PointGroup();
foreach (var point in _points)
{
Point newPoint = new Point(point.X + x, point.Y + y);
points.AddPoint(newPoint);
}
return(points);
}
public static int ColorDiffWithColor(PointGroup group, Color color)
{
if (group == null || group.Points.Count < 2)
{
return(0);
}
double diff = 0;
for (int i = 1; i < group.Points.Count; i++)
{
Point p1 = group.Points[i];
Point p2 = group.Points[i - 1];
diff += ColorDiff(p1, p2);
}
return((int)Math.Round(diff / group.Points.Count));
}
public bool SameColor(PointGroup points, int tolerance = 5)
{
if (points == null || points.Count == 0)
{
return(false);
}
int length = Math.Min(points.Count, this.Count);
List <double> diffs = new List <double>();
for (int i = 0; i < length; ++i)
{
Point p1 = _points[i];
Point p2 = points[i];
int diff = ColorUtils.ColorDiff(p1, p2);
diffs.Add(diff);
}
double avg = 0;
diffs.ForEach((diff) => { avg += diff; });
avg = avg / diffs.Count;
return(avg <= tolerance);
}
public static bool IsSimilarColor(PointGroup group, int tolerance = DEFAULT_COLOR_TOLERANCE)
{
return(ColorDiff(group) <= tolerance);
}
public static int ColorDiff(PointGroup group)
{
return(ColorDiffWithColor(group, Color.Empty));
}
