class Sensor {
  
  float x, y;
  
  void set(float x, float y) {
    this.x = x;
    this.y = y;
  }
  
  float getX() {
    return x;
  }
  
  float getY() {
    return y;
  }
  
  boolean receive(Signal signal) {
    return (signal.range.contains(x, y));
  }
  
  void display() {
    noStroke(); fill(50, 50, 200);
    ellipse(x, y, 3, 3);
  }
  
}