week 12. Object-Oriented Programming

1.  Mandala Project reference:
http://sciencefictioninterfaces.tumblr.com/

2. object oriented programming:
  https://processing.org/tutorials/objects/
  https://www.youtube.com/watch?v=YcbcfkLzgvs

3. simple particle system

https://processing.org/examples/simpleparticlesystem.html

EXercise:
  draw 'array-like' object with OOP

reference:

https://processing.org/examples/arrayobjects.html