Processing: Creative Coding and Computational Art

}
public void mouseClicked(MouseEvent e){}
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseReleased(MouseEvent e){}
}
// Java approach 2 extends the Java MouseAdapter class
void setup(){
new MouseEventDemo();
}
class MouseEventDemo extends MouseAdapter {
//constructor
MouseEventDemo(){
addMouseListener(this);
}
public void mousePressed(MouseEvent e) {
println("Java MouseAdapter class example: mouse press detected");
}
}
// Processing "easy" approach
void draw(){} // we're required to include draw() function
void mousePressed() {
println("Processing example: mouse press detected");
}
The two Java approaches are both more complex and require more code than the
Processing approach. Using Java’s MouseAdapter class simplifies things somewhat, as the
MouseAdapter class encapsulates the necessary implementation of all the required
MouseListener methods. The Processing approach takes this concept of encapsulation
one step further, making it unnecessary to explicitly implement or extend another mouse
event–related interface or class. In reality, the Processing approach I wrote is a little too
lean, as you’d almost always want to include Processing’s setup() function as well as
draw(). However, all that is technically required for the mouse event detection to work in
Processing is the inclusion of the draw() function.
Mouse events
Besides mouse press detection, Processing also includes event detection for mouse
releases, clicks, moves, and drags. Mouse release detection occurs whenever the mouse
button is released, regardless if the mouse position changes while the mouse is pressed. In
comparison, mouse click detection occurs only if the mouse is released at the same point
it was pressed. When the mouse is pressed and released at the same point, both release
and then click detection occur—always in this order. Mouse move detection occurs when
the mouse moves, without the mouse button being pressed, while mouse dragging detection
occurs while the mouse moves with the button pressed. In addition, Processing can
INTERACTIVITY
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