TIB: Re: TI-ZINE Starting-be a writer!!


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TIB: Re: TI-ZINE Starting-be a writer!!




Evidently you never saw my Lavalamp 82, the first BASIC (In every sense
of the word) 82 program I wrote.
~Larry C
Actually, "I am Don Quixote the lord of La Manche"
Larry1492@juno.com
On Mon, 27 Apr 1998 23:24:46 -0400 Bryan Rabeler
<brabeler@isd.ingham.k12.mi.us> writes:
>
>Robert Caldwell wrote:
>
>> {{Tell me - how do you do 8 shade grayscale in TI-BASIC?}}
>>
>> {{Well, I would think, use 8 pictures and display them over and over
>> back-to-back. Like greyscale on the TI-82/83 with 4 or 6 pictures 
>now.
>> ~Ilya}}
>>
>> wrong, actually it uses 1 picture for the beginning (right now it 
>does
>> only 16x16 sprites only, but i can easily upgrade it--i just had to 
>see
>> if it worked) and another picture for the greyscaling.  the 
>greyscaled
>> picture is split into 8 sectors (all 12x12 blocks with a different 
>type
>> of shade--each with a variance to the next frame, this is ANDed with 
>the
>> beginning picture to obtain the "blitter").  anyhow, i've gotten 2
>> people to order the patterns from lightest to darkest, so they are 
>in
>> sequence.  so in all, after running the program, you'll end up with 
>12
>> pictures that are LOCALized and run in a loop until a key is 
>pressed.
>>
>> {{I posted a si[m]ilar BASIC Grayscale program for the TI-92 about a
>> month ago. it allows you to choose the number of shades and allows 
>you
>> to type in a file name to get the pics, meaning one prog does all 
>gray
>> or B/W pics, any size, any bit depth!}}
>>
>> i've never seen the program.  the bit depth becomes faded and way 
>off
>> scale the more you use, meaning that you would have to create your 
>OWN
>> patterns, but my program creates their own patterns to shade it.  
>you
>> just draw a picture on which you want shade 1 to be, shade 2 to be, 
>etc.
>>
>> {{Use the cyclepic command to flip through the pics like a flip 
>book.
>> The pics are several B/W pics. The first pic shown only holds the 
>Black
>> dots. then the next pic holds the dark gray and blac, and the next
>> medium gray, dark gray, and black, and so on. You get the idea.}}
>>
>> actually the cyclepic command has to be stopped with the ON-key or 
>you
>> would have bits and pieces of crap here and there.  there's so much 
>crap
>> that goes on with cyclepic, for example you can't place the picture
>> where you want it on the screen.  if you change your greyscale down 
>to 4
>> and use the same cyclepic time variable, the fading becomes offset 
>and
>> it looks stupid.
>
>I still don't understand how you can have "gray" pictures in BASIC.  
>Isn't
>each pixel either on or off?  I doubt you can flash the pictures on 
>the
>screen fast enough to simulate fake grayscale.
>
>--
>Bryan Rabeler <brabeler@ticalc.org>
>   File Archives
>   the ticalc.org project - http://www.ticalc.org/
>
>
>

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