Book Image

Learn Three.js - Fourth Edition

By : Jos Dirksen
Book Image

Learn Three.js - Fourth Edition

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)
Part 1: Getting Up and Running
Part 2: Working with the Three.js Core Components
Chapter 5: Learning to Work with Geometries
Part 3: Particle Clouds, Loading and Animating Models
Part 4: Post-Processing, Physics, and Sounds

2D geometries

2D objects look like flat objects and, as the name implies, only have two dimensions. In this section, we’ll first look at the 2D geometries: THREE.CircleGeometry, THREE.RingGeometry, THREE.PlaneGeometry, and THREE.ShapeGeometry.


A THREE.PlaneGeometry object can be used to create a very simple 2D rectangle. For an example of this geometry, look at the plane-geometry.html example in the sources for this chapter. A rectangle that was created using THREE.PlaneGeometry is shown in the following screenshot:

Figure 5.1 – Plane geometry

Figure 5.1 – Plane geometry

In the examples for this chapter, we’ve added a control GUI that you can use to control the properties of the geometry (in this case, width, height, widthSegments, and heightSegments), and also change the material (and its properties), disable shadows, and hide the ground plane. For instance, if you want to see the individual faces of this shape, you can easily show...