Exam 1 Topics
CS145: Images and Imagination, Spring 2010

Topics

Understand the following:

• Window coordinate system
• Drawing primitive shapes - lines, ellipses, rectangles
• What is an algorithm.
• Execution sequence in Processing - in what order are commands executed. This includes the order when using functions, loops, and conditional statements.
• How is color represented. RGB vs HSB, grayscale. Why 0-255?
• Variables
  • Data types - int, float, boolean, string, etc.
  • Declaring and naming a variable.
  • Setting the value of a variable with an assignment statement.
  • Arithmetic with variables.
  • Scope of variables.
• Conditionals
  • If statements, if-else statements
  • Boolean expressions, <, >, <=, >=, ==
  • Combining boolean expressions with AND, OR, NOT
• Loops
  • Syntax
  • Controlling the loop - start value, stopping condition, Looping up - looping down, ...
• Functions
  • Syntax
  • Special Processing functions: setup() and draw()
  • How functions affect scope of variables.
  • Function parameters.
  • How to "call" a function.
• Using random numbers.
• Transformations
  • Translation, scale, rotate
  • The Matrix stack
  • Controlling the pivot (fixed point)
  • Commutivity of transformations - when does the order matter and does it not.
  • Hierarchical structure for controlled animation.

Readings in Text

• pp. 17-41: Introduction to Processing
• pp. 85-92: Color
• pp. 37-41: Variables
• pp. 43-50: How to do basic arithmetic in Processing (adding, subtracting, etc)
• pp. 51-60: Conditionals - making decisions
• pp. 61-68: Repetition/looping
• pp. 127-130: Random Numbers
• pp. 51-60: Making Choices - Conditional expressions
• pp. 173-192: Animation and Functions
• pp. 133-134: The translation transformation and the matrix stack.
• pp. 197-201: Function Parameters
• pp. 137-143: Rotate and Scale