Rotate Snake Head

Processing Coding Questions
1

Hello! I am making the game snake and I am trying to rotate the snakehead, but I am stuck. Should I use the rotate function or should I redraw each eye under each conditional? Right now I have a class that consists of both eyes. Let me know if you guys have any advice. Thanks in advance.

class Eye { //Creates a class of the two eyeballs
  float hx;
  float hy;
  color rcolor;
  float size = 25;


  Eye(float hx, float hy, color rcolor) { 
    this.hx=hx;
    this.hy=hy;
    this.rcolor=rcolor;
  }
  
  void keyPressed() { //Creates the controls of the game
    if (key==CODED) {
      if (keyCode==UP) {
        fill(rcolor);
        circle(hx-12, hy-25, size);
        hy = -edy+ hy;
        ty[ty.length-1] -=dy;
      }
    }
    if (key==CODED) {
      if (keyCode==DOWN) {
        fill(rcolor);
        circle(hx-12, hy+25, size);
        hy = hy+edy;
        ty[ty.length-1] +=dy;
      }
    }

    if (key==CODED) {
      if (keyCode==LEFT) {
        fill(rcolor);    
        circle(hx/2, hy+25, size);
        hx = hx-edx;
        tx[tx.length-1] -= dx;
      }
    }
    if (key==CODED) {
      if (keyCode==RIGHT) {
        hx = hx+edx;
        tx[tx.length-1] += dx;
      }
    }
  }

  void edge() {
    float edge_x = hx-(size/8);
    float edge_y = hy-(size/8);

    if (edge_x>width || edge_x<0) {
      state = true;
    }
    if (edge_y>height || edge_y<0) {
      state = true;
    }
  }
  
  void tail(){
    for(int i = 0; i<tx.length-1; i++){ //shifts the tail
      tx[i] = tx[i+1];
      ty[i] = ty[i+1];
    }
  
    
    for(int j= 0; j<tx.length; j++){
    fill(rcolor);
    rectMode(CENTER);
    //noStroke();
    ellipse(tx[j], ty[j], 25, 25);
    circle(tx[0], ty[0], 25); 
    }
    
  }
  
  void food(){
    PImage img1; 
    img1 = loadImage("redApple.png");
    img1.resize(45,45);
    image(img1,appleX,appleY);
    
    if(dist(hx-12,hy-25, appleX,appleY)<20){
      tx = (int[]) append(tx,tx[tx.length-1]);
      ty = (int[]) append(ty, ty[ty.length-1]);
      appleX = random(20,500);
      appleY = random(20,500);
      score++;
    }
    
    if(dist(tx[tx.length-1], ty[ty.length-1], appleX, appleY) <25){
      tx = (int[]) append(tx,tx[tx.length-1]);
      ty = (int[]) append(ty, ty[ty.length-1]);
      appleX = random(20,500);
      appleY = random(20,500);
      score++;
    }
  }

  
  void score(){
    fill(0);
    textSize(30);
    text("Score: ", width*.05, height*.05);
    text(score,width*.17, height*.05);
  }
  void run() {
    score();
    //display();
    keyPressed();
    edge();
    food();
    tail();
    
  }
}
2

In my understanding you can store the direction of the snake in an int dir when you receive the key.

Like dir=0 for west , dir = 1 south

Then when you draw the eyes, eval dir (and not the key)