Re: BASIC Programming Question
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Re: BASIC Programming Question
To do this, you have to draw the pixels, erase the pixels, draw the
pixels in a new place, erase the pixels from the new place, draw them in
a new place...
A way to possible make this faster is to remember which pixels are on,
and if you move all four left one space, you only erase the 2 trailing
pixels, and draw 2 new leading pixels. Basically, instead of drawing
lines, you draw the individual pixels. I dont have an 82, so i dont
know the exact commands, but it is something like pxlon(x,y) and
pxloff(x,y). To make the set move in different directions, you have an
x change and a y change variable, and add that to the x and y
coordinates each time the pixels move. (i.e. xcord+xdiff -> xcord and
ycord+ydiff -> ycord). Finally, you could also, instead of having 4
different variables for each pixel, have 1 pixel for, say the one in the
upper left, and know that there is one pixel to the right (xcord+1) one
pixel below (ycord-1) and one pixel diagional (xcord+1 AND ycord-1)
Hope this helps. If you cant get this figured out, i can send you some
sample code on my 86
Paul C. wrote:
> I have a question about TI-BASIC. I know how to do a lot of "text"
> stuff but I am trying to learn graphics stuff. Oh, and BTW, I have a
> TI-82/86. On the TI-82, how would I make a 4x4 block of pixels (on
> the
> 82) move about in a certain direction and have to move all together?
> I
> tried doing it with a diagonal line but it always left trailing pixels
>
> behind it. Thanks.
>
> Also, I haven't been on here in a while and what is all this talk
> about
> and infrared link? Is it true and is it still considered a hoax?
> --
> Royal Oil
> royaloil@usa.net
> AOLIM S/N: Paulc00
--
Tim Brierley
brierley@erols.com
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