Function
t if the color specification for a given pixel should result in a pixel that is on in a 1 bit dithered bitmap. dither-color-spec rgb-color-spec y x
An RGB specification
An integer
An integer
A boolean
dither-color-spec returnst if rgb-color-spec should result in a pixel that is on in a 1-bit dithered bitmap. The current set of dithers is used in the decision. initialize-ditherswith-dither