Book Image

Canvas Cookbook

Book Image

Canvas Cookbook

Overview of this book

With the growing popularity of HTML5 Canvas, this book offers tailored recipes to help you develop portable applications, presentations, and games. The recipes are simple yet creative and build on each other. At every step, the book inspires the reader to develop his/her own recipe. From basic to advanced, every aspect of Canvas API has been covered to guide readers to develop their own application, presentation, or game.
Table of Contents (16 chapters)
Canvas Cookbook
About the Author
About the Reviewer

Demonstrating acceleration

Here is a simple recipe demonstrating the physics principle of acceleration. The output looks like this:

How to do it…

The recipe is as follows:

The HTML code:

<title>Demonstration of Acceleration</title>
<script src="Acceleration.js"></script>
<body onload="init();">
<canvas id="MyCanvasArea" width="600" height="200" style="border:2px solid blue;" >
   your browser does not support canvas
<h1>Demonstration of Acceleration</h1>

The JavaScript code:

var x =  0;
var y;
var xEnd=600;
var goRight=true;
var can;
var ctx;
var acceleration=0.006;
var time=1;
function animate() {

    reqAnimFrame = window.mozRequestAnimationFrame    ||
                window.webkitRequestAnimationFrame ||
                window.msRequestAnimationFrame     ||
    clear();    //clear the canvas