From: Alwin Blok <alwinblok@...>
Date: 2004-03-15T06:50:49+09:00
Subject: Re: binary data

On 2-mrt-04, at 5:49, daz wrote:

> Like Neil said ...
>
>
> File.open('tbinary.dat', 'wb') do |fb|
>   fb.putc 0b11011011
>   fb.putc 255
>   fb.putc 0xAB
>   fb.putc 0x42
> end
>
> ## See what happened ...
> File.open('tbinary.dat', 'rb') do |fb|
>   bd = fb.read
>   puts bd.unpack('H*')
> end
>
>
> #-> dbffab42
>
>
> daz

I was playing wih the framebuffer device, using pack, I was able to get 
the bits where I wanted, but It's not handy when you want gradients and 
other fancy stuff

When I use

File.open('/dev/fb0','w') do |fb|
   (800*600).times do
     fb.putc 0b0111110000000000
   end
end

I get half my screen filled, Which is obvious since putc is short for 
putchar (i assume), hence 8bits
(the screen is 16 bits color)

So my real question is:
What command do I use to put an arbitrary amount of bits?
I can think of some ways, but I hate it when it feels like a workaround.

Thanks
-Alwin