import java.awt.*;
import java.awt.geom.Line2D.*;
import java.awt.geom.*;

public abstract class ComponentView {
    protected Point center;  //  center of this component
    protected Color color = Color.BLACK;
    protected Rectangle body; // componentīs region on the screen 
    public ComponentView() {
	body = null;
	center = null;
    }
    public abstract void paintComponent (Graphics2D g);
    public void setRed(){
	color=Color.RED;
    }
    public void unsetRed(){
	color=Color.BLACK;
    }
    public void translate(int dx, int dy) {
	if (center!=null)
	    center.translate(dx,dy);
    }
    public Boolean isUnderPoint(Point p) {
	Point np = new Point(p);
	np.translate(-center.x, -center.y);
	if (body!=null)
	    return (body.contains(np));
	else return false;
    }
}