import java.util.*;
public abstract class OutlineComponent{
  public abstract void render(Vector ret,double limit);
  public abstract OutlineComponent plus(Point p0);
  public abstract OutlineComponent rot(double theta);
  public abstract OutlineComponent times(double ratio);
  public abstract OutlineComponent timesY(double ratio);
  public abstract Point firstPoint();
  public abstract Point lastPoint();
  public abstract String toString();
}