CSC151 2007S, Class 34: Getting Started with Script-Fu

Admin:
* Are there questions on the second exam?
  * When I do problem 4 (printing lists), I'm worried about what do
    with lists that have lists as elements.  It seems like I have to
    check whether the car is a list, and then, if it is, recurse on
    the car, and then on the cdr and it seems complicated.
    * When you're tempted to recurse on the car, use the patterns
      of DEEP RECURSION
    * And you are correct that you should recurse on the car
  * When I do problem 4, I get these weird void things all over the
    place.  Why?
    * Some procedures return no values, and when you try to display
      it, you get void.  (An if with only a consequent and no alternate
      may also return void.)
    * When you get this kind of crap (cool, random, but amazingly perplexing),      talk to Sam
* BRING MORE QUESTIONS TOMORROW!

Overview:
* About Script-Fu.
* Lab.
* Reflection.

/About Script-Fu/

* Yesterday: Explored the GIMP
  * Basically like Photoshop except Open Source
  * Includes the amazingly useful bird painting tool
  * But weird user interface which can be frustrating!
    * And not much help
  * Photoshop is a program for painting and editing images
* In addition to using it manually, you can also write programs to
  draw for you.

/Lab!/

* To fill, use (fill-fgcolor IMAGE) or (fill-bgcolor IMAGE)

/Reflection (TOMORROW)/

* What was your favorite part of today's lab?
* What was your least favorite part of today's lab?
* What advantages, if any, are there from being able to write
  Script-Fu commands for GIMP?
* What else would you like to learn about Script-Fu? 
  * I won't necessarily follow your guidance, but I might.
* What other commands would you like?