From: niels wolf <k-zimir@...>
Date: 2003-04-10T02:33:57+09:00
Subject: Re: [Q] Ruby for graphics

thanx.
yep i had a look and opengl was what i found also. i'm sitting on winxp. but
want to write for the server, so linux/unix. so i was looking for something
"native", so i can test and develop on my machine and set it on the server
without bugs or changings.
niels


----- Original Message -----
From: "Bill Kelly" <billk@cts.com>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Wednesday, April 09, 2003 7:20 PM
Subject: Re: [Q] Ruby for graphics


> Hi Dominik and Neils,
>
> From: "Dominik Werder" <dwerder@gmx.net>
> >
> > I would like to do some graphics programming on my own, but I don't know
> > which API to use..
> > May I ask you what software you use and on which OS?
>
> From: "niels wolf" <k-zimir@gmx.net>
> >
> > hm, just some stupid question. new to ruby. what is to use for graphic
> > manipulation??
>
>
> I'm personally using RUDL (Ruby bindings to libsdl:
> [ http://froukepc.dhs.org/rudl/ ]), and also a little OpenGL.
>
> Currently the RUDL FAQ lists some problems running under
> non-windows operating systems.  I'm using Ruby 1.6.6 on win2k.
>
> However I believe the OpenGL bindings definitely work on Linux.  If
> you're on Windows, and using the Pragmatic Programmers installer for
> Ruby, OpenGL support should already be installed for you.  Otherwise,
> see the RAA: [ http://raa.ruby-lang.org/list.rhtml?name=opengl ]
>
> RUDL provides support for loading images as textures or sprites,
> drawing them to the screen, full-screen mode or windowed, some
> basic graphics primitives, and I think audio and joystick support
> (but I haven't tried the latter two.)
>
> Here's one of the simpler examples that comes with RUDL, for
> loading a sprite and bouncing it around on the screen:
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> require 'RUDL'; include RUDL
>
> display = DisplaySurface.new([640, 480])
> ball = Surface.load_new('media/bounce.bmp')
> lastrect = [0,0,0,0]
>
> loop {
>   break if EventQueue.poll.type == QuitEvent
>   pos = [(Timer.ticks%1024-512).abs, ((Timer.ticks+200)%704-352).abs]
>   rect = display.blit(ball, pos)
>   display.update([rect.union(lastrect)])
>   display.fill([0, 0, 0], lastrect = rect)
> }
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
> As for image manipulation libraries, I haven't used any with
> Ruby yet.  Last I looked, there appeared to be some available
> for Linux (imlib2 bindings, ImageMagick bindings, etc.) but I
> didn't see much for Windows.  That may have changed... try
> looking on RAA:
> [
http://raa.ruby-lang.org/cat.rhtml?category_major=Library;category_minor=Gra
phics ]
>
>
>
> Hope this helps,
>
> Bill
>
>
>