/*
  In this example, the canvas is painted with a trail of circles
  whenever the mouse is pressed/dragged.

  Pressing any key causes a new random fill color to be selected,
  and displayed at bottom.
*/

// This function is executed only once, at the very beginning
void setup() {
  size(500,400);
  background(255);
  fill(random(255), random(255), random(255));
}


// This function is repeatedly call in an implicit loop.
// A single call is responsible for drawing a single frame.
void draw() {
  rect(0,height-10,width,height-10);  // display current fill color
}

void mouseDragged() {
  ellipse(mouseX, mouseY, 20, 20);
}

void keyPressed() {
  fill(random(255), random(255), random(255));
}