Method IsTransparent
IsTransparent(int, int, byte)
Returns true if the given pixel is transparent, i.e. either has the mask
color if this image has a mask or if this image has alpha channel and alpha value of
this pixel is strictly less than threshold.
bool IsTransparent(int x, int y, byte threshold)
Parameters
xintX coordinate of the pixel.
yintY coordinate of the pixel.
thresholdbyteAlpha value treshold.