Book Image

Learn Three.js - Fourth Edition

By : Jos Dirksen
5 (1)
Book Image

Learn Three.js - Fourth Edition

5 (1)
By: Jos Dirksen

Overview of this book

Three.js has become the industry standard for creating stunning 3D WebGL content. In this edition, you’ll learn about all the features of Three.js and understand how to integrate it with the newest physics engines. You'll also develop a strong grip on creating and animating immersive 3D scenes directly in your browser, reaping the full potential of WebGL and modern browsers. The book starts with the basic concepts and building blocks used in Three.js and helps you explore these essential topics in detail through extensive examples and code samples. You'll learn how to create realistic-looking 3D objects using textures and materials and how to load existing models from an external source. Next, you'll understand how to control the camera using the Three.js built-in camera controls, which will enable you to fly or walk around the 3D scene you've created. Later chapters will cover the use of HTML5 video and canvas elements as materials for your 3D objects to animate your models. You’ll learn how to use morph targets and skeleton-based animation, before understanding how to add physics, such as gravity and collision detection, to your scene. Finally, you’ll master combining Blender with Three.js and creating VR and AR scenes. By the end of this book, you'll be well-equipped to create 3D-animated graphics using Three.js.
Table of Contents (21 chapters)
1
Part 1: Getting Up and Running
5
Part 2: Working with the Three.js Core Components
7
Chapter 5: Learning to Work with Geometries
10
Part 3: Particle Clouds, Loading and Animating Models
14
Part 4: Post-Processing, Physics, and Sounds

Using textures in materials

There are different ways that textures can be used in Three.js. You can use them to define the colors of the mesh, but you can also use them to define shininess, bumps, and reflections. The first example we will look at, though, is very basic, wherein we will use a texture to define the colors of the individual pixels of a mesh. This is often called a color map or a diffuse map.

Loading a texture and applying it to a mesh

The most basic usage of a texture is when it’s set as a map on a material. When you use this material to create a mesh, the mesh will be colored based on the supplied texture. Loading a texture and using it on a mesh can be done in the following manner:

const textureLoader = new THREE.TextureLoader(); 
const texture = textureLoader.load
  ('/assets/textures/ground/ground_0036_color_1k.jpg')

In this code sample, we are using an instance of THREE.TextureLoader to load an image file from a specific location...