private static Bitmap overlay(Bitmap below, Bitmap over)
{
Bitmap invertBelow = ImageFilter.FilterImage(below, Filters.filters["Invert"]);
Bitmap myMask = maskImage(over, invertBelow);
Bitmap overlayImages = OverlayImages(below, myMask, 1, 1);
return(operationImages(overlayImages, below, Filters.mode["Merge"]));
}
public static Bitmap maskImage(Bitmap img, Bitmap mask)
{
Bitmap greyscale = ImageFilter.FilterImage(mask, Filters.filters["Greyscale"]);
//greyscale = FormatUtil.convert(greyscale, PixelFormat.Format32bppArgb);
Bitmap invert = ImageFilter.FilterImage(greyscale, Filters.filters["Invert"]);
//invert = FormatUtil.convert(invert, PixelFormat.Format32bppArgb);
Bitmap toAddMask = ImageUtil.convert(img, PixelFormat.Format32bppArgb);
Bitmap withAlpha = ImageMultiFilter.RGBA_replaceChannel(toAddMask, null, null, null, invert);
return(withAlpha);
//return ImageMultiFilter.OverlayImages(img, withAlpha, 1, 1);
}