class Emitter
{
  Tuple position;
  String et;
  float ev;
  
  float r; //display radius
  color f; //display fill color
  
  float last_update_millis;
  
  Emitter(Tuple position, String et, float ev)
  {
    this.position = position;    
    this.et = et;
    this.ev = ev;
    r = 10;
    //f = color(255,0,0,255);
    f = color(255,255,255);
    last_update_millis = millis();       
  }
    
  public String getEmissionType()
  {
    return et;
  }
  
  public float getEmissionValue(Tuple t)
  {
    return ev;
  }
  
  public float getEmissionValue()
  {
    return ev;
  }
  
  public void setEmissionValue(float ev, Tuple t)
  {
    this.ev = ev;
  }
  
  public Tuple getPosition()
  {
    return position;
  }
  
  public float getRadius()
  {
    return r;
  }
  
  public void setRadius(float r)
  {
    this.r = r;
  }
  
  public color getFillColor()
  {
    return f;
  }
  
  public void setFillColor(color f)
  {
    this.f = f;
  }
  
  public void update()
  {
     r = ev;
     last_update_millis = millis();
  }
  
  public void display()
  {
    float x, y, z;
    x = position.getValue(0);
    y = position.getValue(1);
    z = position.getValue(2);
    noStroke();
    emissive(128);
    fill(f);   
    //stroke(0);
    
    pushMatrix();
    translate(x, y, z);
    //box(r);
    sphere(r);
    //ellipse(0, 0, r*2, r*2);
    popMatrix();
    
    //noStroke();
  }
}