/*Jeremy Turner (JOT) Assignment A2-06 #200024742
Write a function with three or more parameters and 
visually demonstrate its flexibility.*/

//"Illusion of an Optical Illusion" - About this piece... 
//I intentionally did the constrasting colour flickers...
//and the slow framerate in order to give the optical illusion...
//..that the movement and growing of the rectangles...
//...was only an optical illusion and nothing more...
//...in fact, there are no tricks of the eye...
//...the rectangles are actually moving around, if you look long enough...


int z=0;
void createRect(int x,int y,int h, int v){
  rect(x,y,h,v);

  //Pooya likes putting the custom functions at the top above setup...
  //I am seeing if this method works for me...by seeing if it gives me more topview
  //..for the code...
}


void setup(){
  background(20);
  //I noticed that Pooya during his example session, 
  //..moved the background to void draw so it would not...
  //...be over-drawn but I am more comfortable,
  //..declaring those types of features in void setup
  size (600,600);
  frameRate(4);

}

void draw(){
  background(random (255), random (255), random (255));
  z=z+1;
  createRect(z,99,72,z);
  createRect (66, 244, 77, z);
  createRect (z, 277, z, 111);
  createRect (333, z/2, 555, 444);


  //I realize that I have to repeat the custom function name also in void draw...
  //..this was my main "ah-ha!" moment (one of many) with Pooya.
  //I decided to place the modified moving Z variable in more than one vertex point...
  //...to demonstrate its flexibility
  //I started with an ellipse to deal with less vertex points...
  //I reduced the shape further to simply a rectangle.

  fill (random (255), random (255), random (255));



}