Depending on the "Learning Processing"-book, its better to have a function that tests the intersection of object INSIDE the class for that object.
Instead it seems more logic to me to have the function OUTSIDE any class, so you can call it for every object you like (not only to check if Ball Objects intersect, but also if other objects intersect).

Isn't this true?

Since we have programmed the balls in an object-oriented fashion, it is not terribly logical to suddenly have an intersect( ) function that lives outside of the ball class. A ball object should know how to test if it is intersecting another ball object.

I'm learning processing with "Learning Processing - A Beginners Guide To Programming Images, Animation & Interaction".

I understood you use void when a function doesn't return a value, but in a lot of examples, the function DOES return a value and is still called "void", for example (p. 175):

void rollover(int mx, int my) {
  if (mx > x && mx < x + w) {
mouse = true; } else {
     mouse = false;
   }
} }

this returns a boolean variable "mouse", isn't it? How do I misunderstand this?

Kind regards,

John

Hello people,