// Standard
public CWatchImage(string name, int index, IMagickImage magickImage, double metricUpperBound)
{
Name = name;
Index = index;
MagickImage = magickImage;
HasAlpha = MagickImage != null && MagickImage.HasAlpha;
TransparencyRate = MagickImage != null?MagickImage.GetTransparencyRate() : 0;
AlphaChannel = null;
MetricUpperBound = metricUpperBound;
_PauseTicks = DateTime.MinValue.Ticks;
if (HasAlpha)
{
// Does Separate() clone the channels? If so, does it dispose of them during this?
var tmpMi = MagickImage.Separate().Last().Clone();
tmpMi.Negate();
AlphaChannel = new MagickImage(_AlphaReplacement, MagickImage.Width, MagickImage.Height);
AlphaChannel.Composite(tmpMi, CompositeOperator.CopyAlpha);
AlphaChannel.RePage();
tmpMi.Dispose();
MagickImage.ColorAlpha(_AlphaReplacement);
MagickImage.RePage();
}
}