Lab 4: Parameters, Translations, and the Matrix Stack
CS145: Images and Imagination, Spring 2010

Goals

• Review:
  • Processing drawing functions.
  • Using and writing functions
• New Material
  • Polyshapes
  • More on scope of variables.
  • Function parameters.
  • Translation transformations.
  • Behavior of the Matrix stack.

Reading

In class we cover the basics of these topics. If you want more examples, more depth, or further explanations, please refer to the following pages of the text.

• pp. 133-134: The translation transformation and the matrix stack.
• pp. 197-201: Function Parameters

Activities

Follow the lab 4 directions (pdf).

Deliverables

Wednesday, Feb 17, 30 minutes before class:

You are to turn in via Wise a single zipped file containing your Processing sketch folder for the final exercise in the lab 4 directions. The sketch folder should include the 1) Processing code, 2) an image snapshot.

Before turning in any of your code, make sure that you have cleaned it up as follows:

• Delete any unused code.
• Formatted the code so that it is easy to read (e.g use the auto format tool).
• Added comments so that someone else looking at the code can follow what the code does.