float x = 0;
  float y = 50;
  float z = 255;
  float pi = 1;
  int lo = 1;
  int stfi = 1;
  int clr = 0;
  char letter = 'A';
  
void setup() {
  size(600,600);
  background(255);
  frameRate(60);
  noLoop();
}
 
void draw() {
  float rR = random(-250, 250);
  float rR2 = random(-250, 250);
  float rR3 = random(4);
  float rR4 = random(10);
  float rM = random(3);
//  translate(width/2,height/2);
  rectMode(CENTER);  
  
//  noStroke();
//  rect (0,0, width, height); //background rectangle
//  fill (z, x, y, 50);
//  noStroke();

  

  switch(letter) {
  case 'A': 
     line (pmouseX, pmouseY, mouseX, mouseY);
     break;
  case 'B': 
     rect (pmouseX, pmouseY, rR4, rR4);
    break;
  case 'C':
     ellipse (pmouseX, pmouseY, rR4, rR4);
    break;
}

  if (stfi == 1){
    noFill();
    stroke(z, x, y, 50);  
    }
  else 
  {
    fill (z, x, y, 50);
    }
  
  rotate(PI/pi);
 }

void mousePressed() {
  loop(); 
  if( letter == 'A' && mouseButton == LEFT){
    letter = 'B';
      }
      
    else if ( letter == 'B' && mouseButton == LEFT){
    letter = 'C';
      }
    else if ( letter == 'C' && mouseButton == LEFT){
    letter = 'A';
      }
     
      
  if (stfi == 1 && mouseButton == RIGHT) {
    stfi = 0;
    } 
    else if (mouseButton == RIGHT){
    stfi = 1;
      }
}

//void mouseDragged() {
//  if( mouseButton == LEFT){
//    pi= random(20);
//  }
//}

void keyPressed() {
  if(lo == 1 && keyCode == ENTER) {
    lo = 0;
    noLoop();
  } else {
    lo = 1;
    loop();
  }
  
  if(lo == 1 && keyCode == CONTROL) {
    x= random(0, 255);
//    y= random(0, 255);
    z= random(0, 255);
      }
          
  if (keyCode == ALT) {
  background(255);
}
 }
 
 void keyReleased(){
     if (keyCode == ALT) {
  background(255);
   }}