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  • Book Overview & Buying Three.js Cookbook
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Three.js Cookbook

Three.js Cookbook

By : Jos Dirksen
4 (8)
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Three.js Cookbook

Three.js Cookbook

4 (8)
By: Jos Dirksen

Overview of this book

This book is ideal for anyone who already knows JavaScript and would like to get a broad understanding of Three.js quickly, or for those of you who have a basic grasp of using Three.js but want to really make an impact with your 3D visualizations by learning its advanced features. To apply the recipes in this book you don’t need to know anything about WebGL; all you need is some general knowledge about JavaScript and HTML.
Table of Contents (9 chapters)
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8
Index

Using a cubemap to create reflective materials


With the approach Three.js uses to render scenes in real time, it is difficult and very computationally intensive to create reflective materials. Three.js, however, provides a way you can cheat and approximate reflectivity. For this, Three.js uses cubemaps. In this recipe, we'll explain how to create cubemaps and use them to create reflective materials.

Getting ready

A cubemap is a set of six images that can be mapped to the inside of a cube. They can be created from a panorama picture and look something like this:

In Three.js, we map such a map on the inside of a cube or sphere and use that information to calculate reflections. The following screenshot (example 04.10-use-reflections.html) shows what this looks like when rendered in Three.js:

As you can see in the preceeding screenshot, the objects in the center of the scene reflect the environment they are in. This is something often called a skybox. To get ready, the first thing we need to do...

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Three.js Cookbook
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