/// <summary>
/// Adds information about which pixels should be ignored when marked as different. Those pixels
/// won't be counted as different in GetBitmapDifferenceMetric() and GetBitmapDifferenceImage().
/// </summary>
/// <param name="mask">Bitmap where pixels of Color.Cyan indicates which pixel should be masked.</param>
public void AddMask(BitmapEditor mask)
{
// Check Bitmap size, we can't continue if sizes doesn't correspond
if (mask.Width != width || mask.Height != height)
{
throw new Exception("Passed Bitmap has different size than initialized mask");
}
// Fill mask definition according the passed Bitmap
// (if pixel on Bitmap is of ignored color - differenceMaskColor - mark it as ignored)
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
if (mask.GetPixel(x, y) == differenceColor)
{
differenceMask[x, y] = true;
}
}
}
}
unsafe private void Compare()
{
// Compare dimensions of images A and B
if (bitmapComparatorBitmapA.Width != bitmapComparatorBitmapB.Width || bitmapComparatorBitmapA.Height != bitmapComparatorBitmapB.Height)
{
// We don't know how to compare Bitmaps of different sizes
// Return info that Bitmaps dimensions are different
bitmapComparatorResult = Result.DifferentSize;
}
else
{
int width = bitmapComparatorBitmapA.Width;
int height = bitmapComparatorBitmapA.Height;
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
if (bitmapComparatorBitmapA.GetPixel(x, y) != bitmapComparatorBitmapB.GetPixel(x, y))
{
// Set pixel to Cyan in difference image
bitmapComparatorDifference.SetPixel(x, y, true);
}
}
}
// Evaluate comparison result
if (bitmapComparatorDifference.GetBitmapDifferenceMetric() > 0)
{
bitmapComparatorResult = Result.DifferentColor;
}
else
{
bitmapComparatorResult = Result.Identical;
}
}
}
