// UdK Computational design
// Marius Watz 2003
// http://www.evolutionzone.com/udk/
//
// UDK03_04_time
//
// Measuring time.

float newTime,oldTime,diffTime;
int cnt=0;

void setup() {
  size(400,400);
  background(200,200,200);
  
  ellipseMode(CENTER_DIAMETER);
  oldTime=0;
  newTime=0;
}

void loop() {

// Update the current time.
  newTime=millis();
  diffTime=newTime-oldTime;

// Draw an ellipse which has a radius
// related to the time elapsed since the last mouse click

  cnt++;
  if((cnt/50)%2==0) fill(200,0,0,50);
  else fill(255,255,255,50);  

  ellipse(mouseX,mouseY, diffTime/100,diffTime/100);
}

void mousePressed() {
  oldTime=newTime;
}