Re: LZ: Graphic Code
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A.K.A. TheWiz wrote:
>
> > Yes, but the program has to be synchronised to the refresh rate of the
> > INDIVIDUAL calculators. If you'll notice, on the popular Cindy program,
> > the trim flicker settings have to be changed on every calc that you install
> > the prog onto. You can get it to look great on your calc, but you have to
> > tweak it a little if you give a copy to someone.
>
> If you look at the grayscale libraries (at ticalc.org/zshell/source, I
> think), you'll find that what they do is set the screen to display the
> image that goes at full black (See ti_ports.txt, it's one of those...),
> then set the contrast to a slightly lighter shade and set the screen to
> display the image that goes at that shade, and so on...
>
> HTH,
> Dan Knapp
>
> /***********************************
> * Daniel Knapp *
> * FeatherWate Software *
> * email: dankna@bergen.org *
> * *
> * Whose account this is, *
> * I think I know. *
> * The sysop is in Berkely, though. *
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No, grayscale doesn't have anything to do with contrast. Usually, you
have 2 pictures and you zlternate which ones you display. Look at this
chart:
pic1 pic2
bit 0 0 white 0,0,0,0,0,0
set/res 0 1 light gray 0,0,1,0,0,1
1 0 dark gray 1,1,0,1,1,0
1 1 black 1,1,1,1,1,1
If pic1 is displayed twice as much as pic2, then the shades would be like
that.
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