Planet Class

// Example 14-18: Object-oriented solar system

class Planet {
  // Each planet object keeps track of its own angle of rotation.
  float theta;      // Rotation around sun
  float diameter;   // Size of planet
  float distance;   // Distance from sun
  float orbitspeed; // Orbit speed
  float resetingDistance ;
  color planetColor;
  boolean colorChange = false;


  Planet(float distance_, float diameter_) {
    distance = distance_;
    resetingDistance = distance_ ;
    diameter = diameter_;
    theta = 0;
    orbitspeed = random(0.01, 0.03);
    //planetColor = color( random(255), random(255), random(255), random(255));
  }

  void update() {
    // Increment the angle to rotate
    theta += orbitspeed;
  }

  void display() {
    // Before rotation and translation, the state of the matrix is saved with pushMatrix().
    pushMatrix();
    // Rotate orbit
    rotate(theta);
    // Translate out distance
    translate(distance, 0);
    stroke(0);
    fill(175);

    if (colorChange == true) {
     //fill(random(255), random(255), random(255), random(255));
     planetColor = color( random(255), random(255), random(255), random(255));
    }

    ellipse(0, 0, diameter, diameter);
    // Once the planet is drawn, the matrix is restored with popMatrix() so that the next planet is not affected.
    popMatrix();

  }

}