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Simple Ball Animation with Border Collision using VS 2005 and .NET 2.0

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12 May 2006CPOL 62.2K   1.3K   18   3
A very primitive article on simple animation of balls using double buffering technique
Sample Image - BallAnimation.jpg


In this project, I have demonstrated a simple technique on how we can animate some balls in a Picture Box. The balls collides with the walls and change directions. Using the double buffering of .NET 2.0, it is very easy to handle large processing of graphical animation.

I have created a Ball class which can be reused and extended for other projects as well. The Ball class has the following methods:

DrawBall(Graphics g) 
DrawBall(Graphics g, int move_x, int move_y) 
MoveBall(Ball ball, int screenHeight, int screenWidth)

The DrawBall with the single parameter draws an ellipse on the Graphics object. On the other hand, the Drawball with three parameters draws the updated ball on the screen.

The ball is created using the following code:

g.DrawEllipse(new Pen(_ballColor), _x, _y, _width, _height);
// Create solid brush. 
SolidBrush redBrush = new SolidBrush(_ballColor); 
// Fill ellipse on screen
g.FillEllipse(redBrush, _x, _y, _width, _height);

The double buffering is achieved by the following code:

this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true); 
this.SetStyle(ControlStyles.AllPaintingInWmPaint, true); 
this.SetStyle(ControlStyles.UserPaint, true); 

We have used a timer with interval 1 millisecond to animate the balls. In the Timer Tick method I used:

for (int i = 0; i < TOTAL_BALLS; i++) 

To Refresh the picture box on where we are painting the balls, I wrote:

private void pictureBox1_Paint(object sender, System.Windows.Forms.PaintEventArgs e) 
    for(int i = 0; i < TOTAL_BALLS; i++) 


We have seen how we can animate balls using simple animation techniques. Hope you like the code. Till then, Eat Bytes Regularly for good health.


  • 13th May, 2006: Initial post


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By
Bangladesh Bangladesh
Zakaria has a keen interest in developing new solutions and exploring new technologies. He has a wide experience in web technologies and business solutions.

Visit my works @

His latest project includes Library Management System for University of Dhaka using ASP.NET and Sql Server.

Zakaria completed Masters in Information Technology from Institute of Information Technology,
University of Dhaka, had his BSc in Computer Science from AIUB (
School and college from SKBZBIS (

Latest Project :
for Alam Group of Companies, Abu Dhabi

Some of his Completed projects: (The official website of Embassy of the People's Republic of Bangladesh, Abu Dhabi, United Arab Emirates)

Bangla Translation of the Holy Quran (C#/Access)
Library Management System (ASP.NET/C#/SQLServer)
Seat Reservation System (ASP.NET/C#/SQLServer)

Besides programming, he has published his first poetry book (na bola kothamala/Unspoken Words) and in the process of writing several new novels.

Founded ZakaSoft, a division of ZCom, Providing state-of-the-art solutions in United Arab Emirates.

Zakaria Lives in Abu Dhabi and enjoys his spare time in writing and music.

Comments and Discussions

GeneralInteresting and useful Pin
BigWorld12-Jan-09 21:17
BigWorld12-Jan-09 21:17 
GeneralRe: Interesting and useful Pin
milkplus19-Oct-09 7:05
milkplus19-Oct-09 7:05 

I needed a sample app for my own project WebConfig[^] and this was perfect.

I switched to using vectors. If you are interested, there is a great vector class at A Vector Type for C#[^]

QuestionWhy a PictureBox? Pin
Robert Rohde13-May-06 4:28
Robert Rohde13-May-06 4:28 

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