[Fluxus] shadows and tweakbar

[gabor papp]

hi Daniel,

> multisampling in GLUT and the string solution works. It would be also
> possible to read the string from a configuration file, that way users
> could modify rendering settings easily.
sounds nice. would be great to read the configuration from a variable in 
the ~/.fluxus.scm configuration script, although i think that runs later 
then the glut setup. what do you think?

> 2: I had a look @ the shadow volume code, and I modified it to render
> the shadows by subtracting light from the scene as a postprocess.
would be nice to see how it looks. don't you want to make a branch in 
the fluxus repo? so everyone can try your modifications and we could 
easily import them to master. dave can give you access.

> 3: I added a reload current script function that gets called with F1,
> This way I can edit my scripts in an external editor and reload them
> quickly.
this is a bit risky if you press f1 by accident during a performance :). 
one of my colleagues added a modification that reloads the file 
automatically if it has been changed. these are both nice, although i 
think we should make the editor good enough so an external editor won't 
be needed.

> If any of these are useful I will be happy to send in the code. I had
> a hard time though with debugging... do you use GDB on OSX?
yes, i use gdb.

> Another question regarding the installation of modules. I wanted to
> install gabor's anttweakbar module but I didn't find any info on how
> to install it. I installed the lib, and then tried putting tw.ss in
> modules/scheme but when I open the demo file I get this error message
you don't have to put tw.ss in modules/scheme. if you have the command 
line version of fluxus, not the app, you can just run fluxus from the 
folder when the example and tw.ss are.
basically if you use (require "tw.ss") then racket looks for tw.ss in 
the current directory. the other way is to use the form (require 
something/tw), where you have to place the tw.ss file on the collects 
path in the 'something' folder. in osx ~/Documents/Fluxus/collects is in 
the collects path, so probably that's the easiest to use.
probably you also need to change the require's in tw.ss from fluxus-017 
to fluxus-018.

best,
gabor