Convert Png Files into Animated Png
tools:::Rd_package_title("apng")
Convert static pngs to animated png
Blend previous frame into alpha
Completely replace the previous frame
Prepare region as fully transparent
Write over the current output buffer
Keep previous frame in rendering region
Convert several png files into an animated png file. This package exports only a single function `apng'. Call the apng function with a vector of file names (which should be png files) to convert them to a single animated png file.