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WebGL Beginner's Guide

You're reading from WebGL Beginner's Guide If you're a JavaScript developer who wants to take the plunge into 3D web development, this is the perfect primer. From a basic understanding of WebGL structure to creating realistic 3D scenes, everything you need is here.

Product type Paperback

Published in Jun 2012

Publisher Packt

ISBN-13 9781849691727

Length 376 pages

Edition 1st Edition

Languages

JavaScript

Tools

WebGL

Concepts

Graphics Programming

Table of Contents (18) Chapters

WebGL Beginner's Guide

Credits

About the Authors

Acknowledgement

About the Reviewers

www.PacktPub.com

Preface

1. Getting Started with WebGL FREE CHAPTER

2. Rendering Geometry

3. Lights!

4. Camera

5. Action

6. Colors, Depth Testing, and Alpha Blending

7. Textures

8. Picking

9. Putting It All Together

10. Advanced Techniques

Index

Architectural updates

Let's review the structure of the examples developed in the book. Each web page includes several scripts. One of them is WebGLApp.js. This script contains the WebGLApp object.

WebGLApp review

The WebGLApp object defines three function hooks that control the life cycle of the application. As shown in the diagram, we create a WebGLApp instance inside the runWebGLApp function. Then, we connect the WebGLApp hooks to the configure, load, and draw functions that we coded. Also, please notice that the runWebGLApp function is the entry point for the application and it is automatically invoked using the onload event of the web page.

Adding support for matrix stacks

The diagram also shows a new script: SceneTransforms.js. This file contains the SceneTransforms objects that encapsulate the matrix-handling operations including matrix stacks operations push and pop. The SceneTransforms object replaces the functionality provided in Chapter 4, Camera, by the initTransforms, updateTransforms...

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