/**
 * Bouncy speed
 *
 * 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 = height - move(currTime);
  
  // draw the ball  
  ellipse(width/2, currY, 20, 20);
  
  currTime++;
}

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

//----------------------------
float move(float x) {
  return 280 * (abs(cos(x / 10.0f)) / (0.006f * (x + 160))) + 10;
}