frame3

import java.awt.*;

import java.awt.geom.*;

import java.lang.Number;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.Random;

 

/**

 * Class BallDemo - provides two short demonstrations showing how to use the

 * Canvas class.

 *

 * @author Michael Kolling and David J. Barnes

 * @version 2006.03.30

 */

 

public class BallDemo  

{

    private Canvas myCanvas;

    private ArrayList <BouncingBall> ballResevoir;

    private Random resevoirCapacity;

    private Random randomXPos;

    private Random randomYPos;

    private Random randomBallSize;

    private int width;

    private int height;

   

 

    /**

     * Create a BallDemo object. Creates a fresh canvas and makes it visible.

     */

    public BallDemo(int width, int height)

    {

        myCanvas = new Canvas("Ball Demo", width, height);

        myCanvas.setVisible(true);

        ballResevoir = new ArrayList<BouncingBall>();

       resevoirCapacity = new Random();

       randomXPos = new Random();

       randomYPos = new Random();

       randomBallSize = new Random();

       this.width = width;

       this.height = height;

       

    }

 

    /**

     * Demonstrate some of the drawing operations that are

     * available on a Canvas object.

     */

    public void drawDemo()

    {

        myCanvas.setFont(new Font("helvetica", Font.BOLD, 14));

        myCanvas.setForegroundColor(Color.red);

 

        myCanvas.drawString("We can draw text, ...", 20, 30);

        myCanvas.wait(1000);

 

        myCanvas.setForegroundColor(Color.black);

        myCanvas.drawString("...draw lines...", 60, 60);

        myCanvas.wait(500);

        myCanvas.setForegroundColor(Color.gray);

        myCanvas.drawLine(200, 20, 300, 50);

        myCanvas.wait(500);

        myCanvas.setForegroundColor(Color.blue);

        myCanvas.drawLine(220, 100, 370, 40);

        myCanvas.wait(500);

        myCanvas.setForegroundColor(Color.green);

        myCanvas.drawLine(290, 10, 320, 120);

        myCanvas.wait(1000);

 

        myCanvas.setForegroundColor(Color.gray);

        myCanvas.drawString("...and shapes!", 110, 90);

 

        myCanvas.setForegroundColor(Color.red);

 

        // the shape to draw and move

        int xPos = 10;

        Rectangle rect = new Rectangle(xPos, 150, 30, 20);

 

        // move the rectangle across the screen

        for(int i = 0; i < 200; i ++) {

            myCanvas.fill(rect);

            myCanvas.wait(10);

            myCanvas.erase(rect);

            xPos++;

            rect.setLocation(xPos, 150);

        }

        // at the end of the move, draw once more so that it remains visible

        myCanvas.fill(rect);

    }

 

    /**

     * Generate a random number to fill the ball resevoir

     * @ return a random number between x and y

     */

   

   /* public int fillBallResevoir(int maxCapacity)

    {

      int numberOfBalls = resevoirCapacity.nextInt(maxCapacity);

      if (numberOfBalls < 2)

        {

          fillBallResevoir(maxCapacity);

         // ballResevoir.add(BouncingBall);

        }

        else

        {

            return numberOfBalls;

        }

        return maxCapacity;

    }*/

   

   

    /**

     * generate a random number for ball size

     * @ return a random number between 20 and maximum for ball size.

     *

     */

  /*public int setBallSize(int maxSize)

{

    Iterator<BouncingBall> it = ballResevoir.iterator();

        while(it.hasNext())

        {

            ballSize = randomBallSize.nextInt(maxSize);

            if(ballSize > 20 & ballSize<60)

                {

                    System.out.println("ball size" + ballSize);

                    return ballSize;

                 

                }

                else

                {

                    setBallSize(maxSize);

                }

            }

            {

               

                return maxSize;

        }

    }*/

 

     /* Simulate two bouncing balls

     */

   

   public int setballXPos()

   {

       int reportWidth = randomXPos.nextInt(width);

       System.out.println("width " + reportWidth);

       return reportWidth;

    }

   

    public int setballYPos ()

    {

        int reportHeight = randomYPos.nextInt(height/2);

        System.out.println("height " + reportHeight);

        return reportHeight;

    }

   

    public void bounce()

    {

        // position of the ground line

        int ground = 400;

        // position the ceiling line

        int ceiling = 20;

        // position the left wall

        int leftWall = 20;

        // position the right wall

        int rightWall = 400;

       

       

        myCanvas.setVisible(true);

 

        // draw the ground

        myCanvas.drawLine(50, ground, 550, ground);

 

        BouncingBall ball = new BouncingBall(setballXPos(), setballYPos(), 16, Color.blue, ground, myCanvas, ceiling, leftWall, rightWall);

        ball.draw();

        BouncingBall ball2 = new BouncingBall(setballXPos(), setballYPos(), 16, Color.blue, ground, myCanvas, ceiling, leftWall, rightWall);

        ball2.draw();

       

       

        // make them bounce

     /* boolean finished =  false;

        while(!finished) {

            myCanvas.wait(50);           // small delay

            ball.move();

            ball2.move();

            // stop once ball has travelled a certain distance on x axis

            if(ball.getXPosition() >= 550 && ball2.getXPosition() >= 550) {

                finished = true;

            }

        }

        ball.erase();

        ball2.erase();*/

       

       

    }

   

    public void drawFrame()

    {

       int cHeight = new Double(myCanvas.getHeight()).intValue();

       int cWidth =  new Double(myCanvas.getWidth()).intValue();

       int fHeight = cHeight -40;

       int fWidth = cWidth -40;

       Rectangle frame = new Rectangle(0, 0, cWidth, cHeight);

         myCanvas.fill(frame);

         myCanvas.wait(200);

         myCanvas.eraseRectangle (20, 20, fWidth, fHeight);

         

        }

 

   

   

}