If you multiply several sin() function calls together, like in sin()*sin()*sin(), the result is still a number between -1 and 1, but you get much more interesting shapes when you use the result to draw or animate in your programs.
You can make changes to the code below. Then
Questions and comments are welcome! :) But please try to stay close to the topic of this episode. Use the Processing forums for help with your Processing projects (or hire me for help ;-)