clock with time zone

clockTimeZone

int timeZone = 0;

void setup() {
  size(500,500);
  frame.setResizable(true);
  noFill();
  ellipseMode(CENTER);
  textAlign(CENTER,CENTER);
}

void draw() {
  int timeS = second();
  int timeM = minute();
  int timeH = hour() + timeZone;
  background(0);
  analogUhr(width/2, height/2, gr(width, height, 3), timeS, timeM, timeH, 1, 1, 1);
  digitalUhr(50+gr(width, height, 25), 0+gr(width, height, 25), gr(width, height, 25), timeS, timeM, timeH);
  if(timeZone>0){
    text("MEZ+"+timeZone, width/2, 20);
  } if(timeZone<0) {
    text("MEZ"+timeZone, width/2, 20);
  } if(timeZone==0) {
    text("MEZ", width/2, 20);
  }
}

void analogUhr(int x, int y, int g, int s, int m, int h, int cr, int cg, int cb) {
  //fill(cr,cg,cb);
  stroke(255);
  strokeWeight(max(1, g/100));
  ellipse(x, y, g*2, g*2);
  // Stundenzeiger
  strokeWeight(max(1, g/10));
  line(x, y, x+(g-g/4)*cos(radians(h*30-90)), y+(g-g/4)*sin(radians(h*30-90))); 
  // Minutenzeiger
  strokeWeight(max(1, g/50));
  line(x, y, x+(g-g/25)*cos(radians(m*6-90)), y+(g-g/25)*sin(radians(m*6-90)));
  // Sekundenzeiger
  stroke(255,0,0);
  strokeWeight(max(1, g/100));
  line(x, y, x+g*cos(radians(s*6-90)), y+g*sin(radians(s*6-90)));
}

void digitalUhr(int x, int y, int g, int s, int m, int h) {
  textSize(g);
  text(h+":"+m+":"+s, x, y);
}

int gr(int breite, int hohe, int faktor) {
  if(breite<=hohe){
    return breite/faktor;
  } else {
    return hohe/faktor;
  }
}

void keyPressed() {
  if(keyCode == LEFT) {
    timeZone -= 1;
  }
  if(keyCode == RIGHT) {
    timeZone += 1;
  }
  if(key == 'r') {
    timeZone = 0;
  }
}