// This Processing code draws random dots on the vertical line
// that runs through the mouse pointer.


// setup() is only executed once, upon program startup
void setup() {
  size(200,200);                // create a 200x200 canvas
  background(102);              // make it middle grey
  stroke(255);                  // draw white strokes
}


// draw() is repeated continuously after setup() ends
void draw() {
  float y = random(0,height);   // set y to a random value between 0 and 200.
  point(mouseX, y);             // draw a point at height y and the mouse x
}