CSE230 Wi13 - Installing SOE Graphics (Ubuntu 10.04)

It is a bit tricky to get the SOE graphics working. Here’s what I had to do.

Step 1: Install OpenGL

$ sudo apt-get install libghc6-opengl-dev
$ sudo apt-get install libxrandr-dev 
$ cabal install GLFW

Step 2: Install SOE

$ wget http://cseweb.ucsd.edu/classes/wi12/cse230-a/static/SOE.tar.gz
$ tar -zxvf SOE.tar.gz

Step 3:

Next, suppose you have a Haskell file called foo.hs with the following source.

> import SOE
> 
> makeCircle (x,y) r = ellipse (x-r, y-r) (x+r, y+r)
> 
> circles = reverse $ zipWith withColor colors bwcircles
>   where bwcircles = [makeCircle center (25*i) | i <- [1..(length colors)]]
>         colors    = [Red, Blue, Green, Cyan, Magenta, Yellow]
>         center    = (350, 225)  
> 
> test = runGraphics $ do 
>   w <- openWindow "Test" (300,300)
>   drawInWindow w $ text (10,10) "Hello World" 
>   sequence_ $ map (drawInWindow w) circles
>   k <- getKey w
>   closeWindow w

To test that your install is working, run the following, which adds the SOE modules to the search path of ghci

$ ghci -i./SOE/src/

You should see something like

GHCi, version 6.12.1: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.

Next, load up the file foo.hs

Prelude> :load foo.hs 
[1 of 2] Compiling SOE              ( ../SOE/src/SOE.hs, interpreted )
[2 of 2] Compiling Main             ( hw1.hs, interpreted )
Ok, modules loaded: SOE, Main.

Finally, test the code with the following

*Main> test 
Loading package OpenGL-2.2.3.0 ... linking ... done.
Loading package GLFW-0.4.2 ... linking ... done.
Loading package old-locale-1.0.0.2 ... linking ... done.
Loading package old-time-1.0.0.3 ... linking ... done.

You should see a window that looks like this

bullseye

(Hit any key over the window to close it.)