public IEnumerable <Tuple <StegoPixel, StegoPixel> > PixelDiff(StegoImage otherImage, Func <StegoPixel, bool> pixelsToCompare = null)
{
if (Width != otherImage.Width || Height != otherImage.Height)
{
throw new Exception("Images do not share the same dimensions.");
}
if (pixelsToCompare == null)
{
pixelsToCompare = p => true;
}
foreach (var pixel in Pixels.Where(pixelsToCompare))
{
var otherPixel = otherImage.GetPixel(pixel.Index);
if (!pixel.ColorsEqual(otherPixel))
{
yield return(Tuple.Create(pixel, otherPixel));
}
}
}
public bool PixelsAreEqual(StegoImage otherImage, Func <StegoPixel, bool> pixelsToCompare = null)
{
if (Width != otherImage.Width || Height != otherImage.Height)
{
return(false);
}
if (pixelsToCompare == null)
{
pixelsToCompare = p => true;
}
foreach (var pixel in Pixels.Where(pixelsToCompare))
{
var otherPixel = otherImage.GetPixel(pixel.Index);
if (!pixel.ColorsEqual(otherPixel))
{
return(false);
}
}
return(true);
}