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

Animating text

It gives immense pleasure when you see your name on a screen. And it looks much better when animated. After learning this recipe, try your name.

You have seen the animation of a shape. The new recipe shows the animation of some text. The output is shown here:

How to do it…

This recipe is very similar to the code shown in the first recipe.

The HTML code:

<title>Animated Text</title>
<script src="TextAnim.js"></script>
<body onload="init();">
<canvas id="MyCanvasArea" width="400" height="400" style="border:2px solid blue;" >
   your browser does not support canvas
<h1>An Animated Text</h1>

The JavaScript code:

var can;
var ctx;
var alpha=0.0;
var goUp=true;

function animate() {
  reqAnimFrame = window.mozRequestAnimationFrame    ||
                window.webkitRequestAnimationFrame ||
                window.msRequestAnimationFrame     ||