Book Image

WebGL Beginner's Guide

Book Image

WebGL Beginner's Guide

Overview of this book

WebGL is a new web technology that brings hardware-accelerated 3D graphics to the browser without installing additional software. As WebGL is based on OpenGL and brings in a new concept of 3D graphics programming to web development, it may seem unfamiliar to even experienced Web developers.Packed with many examples, this book shows how WebGL can be easy to learn despite its unfriendly appearance. Each chapter addresses one of the important aspects of 3D graphics programming and presents different alternatives for its implementation. The topics are always associated with exercises that will allow the reader to put the concepts to the test in an immediate manner.WebGL Beginner's Guide presents a clear road map to learning WebGL. Each chapter starts with a summary of the learning goals for the chapter, followed by a detailed description of each topic. The book offers example-rich, up-to-date introductions to a wide range of essential WebGL topics, including drawing, color, texture, transformations, framebuffers, light, surfaces, geometry, and more. With each chapter, you will "level up"ù your 3D graphics programming skills. This book will become your trustworthy companion filled with the information required to develop cool-looking 3D web applications with WebGL and JavaScript.
Table of Contents (18 chapters)
WebGL Beginner's Guide
Credits
About the Authors
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Time for action – Goraud shading


  1. Open the file ch3_Sphere_Goraud_Phong.html in your HTML5 browser. You will see something similar to the following screenshot:

  2. The interface looks a little bit more elaborate than the diffuse lighting example. Let's stop here for a moment to explain these widgets:

    • Light color (light diffuse term): As mentioned at the beginning of the chapter, we can have a case where our light is not white. We have included a color selector widget here for the light color so you can experiment with different combinations.

    • Light ambient term: The light ambient property. In this example, a gray value: r = g = b.

    • Light specular term: The light specular property. A gray value: r=g=b.

    • X,Y,Z: The coordinates that define the light orientation.

    • Sphere color (material diffuse term): The material diffuse property. We have included a color selector so you can try different combinations for the r, g, b channels.

    • Material ambient term : The material ambient property. We have included it...