Why we should all get BatLib

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Summary:

It's incredible ability to generate splash screens, and the ability to take ingenuity to a whole new level.

Why we should all get BatLib

Roguebantha 16 Dec 2012 02:16

My splashscreen for my "Linux"OS I'm making. Thanks Zeda, for making this possible:P :

Here's my code:

:FnOff
:ClrDraw
:0→Xmin
:E1→Xmax
:0→Ymin
:33E3→Ymax
:2→Xres
:AxesOff
:"‾7E3X+33050→Y1
:"33050e^(‾.287682X→Y2
:DispGraph
:dim(56,6,99,56,6
:For(A,1,300:End
:Text(12,42,"By Roguebantha
:dim(1,56,6,99
:For(A,1,300:End
:dim(56,6
:Text(20,45,"Linux OS v0.1
:dim(56,6,99
:For(A,1,1.5E3
:End

Basically, it works by first inverting the screen to all black on the buffer and updating, then reverting the graph buffer without updating the graph screen, writing to the graph buffer, then reinverting the graph buffer and updating screen. Until I wrote this, I never understood why you might not use the dim(99 command immediately :D

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Re: Why we should all get BatLib

(account deleted) 16 Dec 2012 14:08

Wow. Do you mind if I borrow something somewhat similar with the screen inverting in scope?

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Coffee + Radiohead = ^^

Re: Why we should all get BatLib

Roguebantha 16 Dec 2012 17:41

Nope, not at all :)

If you would give me and Xeda credit though, I'm sure that would be appreciated. :D

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Last edited on 16 Dec 2012 17:41 by Roguebantha Show more

Re: Why we should all get BatLib

Xeda Elnara 16 Dec 2012 14:25

Haha, I am glad you now know why dim(99 is a super cool command >:D It would have taken only three bytes of code to make all the drawing commands auto update, but that would make the fancy graphics not so fancy anymore. Also, it is great for things like cursors if you want them to move without flicker. Draw them, update the LCD, then erase them without updating the LCD. The user will only see the cursor move and if it stays in place, there won;t be that flicker that BASIC drawing commands have when erasing :D

EDIT: Also, you can get out of using Y1 and Y2 by using the DrawF command :D basically:

:"‾7E3X+33050→Y1
:"33050e^(‾.287682X→Y2
:DispGraph

Turns into:

:DrawF -7E3X+33050
:DrawF 33050e^(-.287682X

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Z80 Assembly>English>TI-BASIC>Python>French>C>0

Last edited on 16 Dec 2012 14:28 by Xeda Elnara Show more

Re: Why we should all get BatLib

Roguebantha 16 Dec 2012 17:40

I would've except then the Xres has no effect on the rendering speed. If I use Y₁ and Y₂ and set the Xres to 2, the picture renders a lot faster. I originally used DrawF, but wasn't happy with the results.

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Re: Why we should all get BatLib

Xeda Elnara 16 Dec 2012 21:53

Ah, that makes sense! Cool :D

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Z80 Assembly>English>TI-BASIC>Python>French>C>0