import java.awt.*;
import java.applet.*;

public class SimpleDraw extends Applet
{

	Point startPoint;
	Point points[];
	int numPoints;
	boolean drawing;

	public void init()
	{
		startPoint = new Point(0, 0);
		points = new Point[1000];
		numPoints = 0;
		drawing = false;
		resize(400, 300);
	}
    
	public void paint(Graphics g)
	{
		int oldX = startPoint.x;
		int oldY = startPoint.y;
		for (int x=0; x<numPoints; ++x)
		{
			g.drawLine(oldX, oldY, points[x].x, points[x].y);
			oldX = points[x].x;
			oldY = points[x].y;
		}
	}
    
	public boolean mouseDown(Event evt, int x, int y)
	{
		if (!drawing)
		{
			drawing = true;
			startPoint.x = x;
			startPoint.y = y;
		}
		else
		{
			drawing = false;
		}
		return true;
	}
    
	public boolean mouseMove(Event evt, int x, int y)
	{
		if ((drawing) && (numPoints < 1000))
		{
			points[numPoints] = new Point(x, y);
			++numPoints;
			repaint();
		}
		return true;
	}

}