// UdK Computational design
// Marius Watz 2003
// http://www.evolutionzone.com/udk/
//
// UDK03_03_mouse_events
//
// Using mouse event handlers.

float x,y,rad;

void setup() {
  size(400,400);

  ellipseMode(CENTER_DIAMETER);
  x=0;
  y=0;
  rad=10;
}

void loop() {
  background(200,200,200);
  fill(255,0,0);
  
  ellipse(x,y, rad,rad);
}


// Gets called every time the mouse is moved and the mouse button
// is not pressed.
void mouseMoved() {
  x=mouseX;
  y=mouseY;
}

// Gets called once when the mouse button is clicked.
void mousePressed() {
  rad+=10;
  if(rad>100) rad=10;
}

// Gets called every time the mouse is moved and the mouse button
// is pressed.
void mouseDragged() {
  rad+=1;
  if(rad>100) rad=10;
  x=mouseX;
  y=mouseY;
}