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 a solar system

The solar system has always been attractive to view for all ages. Here is a recipe for a solar system whose output can be shown as:

How to do it…

The following is the recipe for the solar system:

The HTML code:

<title>Animated Solar System</title>
<script src="SolarSystem.js"></script>
<body onload="init();">
<canvas id="MyCanvasArea" width="800" height="800" style="border:2px solid blue;" >
   your browser does not support canvas
<h1>Solar system</h1>

The JavaScript code:

var can;
var ctx;
var oradius,ocolor,pradius,pcolo,opradius,pcount;
var angshift=[0.009,0.008,0.007,0.006,0.005,0.009,0.005,0.006,0.007];
var ang=[60,80,100,120,140,160,180,200,220];
var colors=["blue","brown","green","crimson","olive","indigo","purple","grey","red"];
var pradius=[3.5,7,10,6,22,18,15,12,2.8];
var pnames=["mercury","venus",...