/**
 * Modulo cycling
 *
 * Math for artists who now need to program
 * ITP DriveBy, 10/2/2008
 * Elie Zananiri - ez@silentlycrashing.net
 */
 
//----------------------------
// variables
float currY;
int currTime;

//---------------------------- 
void setup() {
  // set up the applet
  size(300, 300);
  smooth();
  frameRate(30);
  
  // reset the animation independent variable (time)
  currTime = 0; 
  
  // set the ball color
  noStroke();
  fill(#FF6F00);
}

//----------------------------
void draw() {
  // clear the screen
  background(0);
  
  // move the ball
  currY = move(currTime);
  
  // draw the ball  
  ellipse(width/2, currY, 20, 20);
  
  currTime = (currTime+1)%55;
}

//----------------------------
void mousePressed() {
  // reset the animation independent variable (time)
  currTime = 0;  
}

//----------------------------
float move(float x) {
  return (0.1 * pow(x, 2) + 10);
}