public class Circle
{
  private PVector _center;
  private float _radius;

  public Circle( PVector loc, float r )
  {
    _radius = r;
    _center = loc;
  }

  public void drawMe(float v )
  {
    ellipseMode( CENTER );
    smooth();
    noFill();
    stroke( #FF6600, v );
    ellipse( _center.x, _center.y, _radius, _radius );
  }

  public PVector getCenter()
  {
    return _center;
  }
  public float getRadius()
  {
    return _radius * 0.5;
  }
}