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Learn Three.js

Learn Three.js

By : Jos Dirksen
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Learn Three.js

Learn Three.js

3 (4)
By: Jos Dirksen

Overview of this book

WebGL makes it possible to create 3D graphics in the browser without having to use plugins such as Flash and Java. Programming WebGL, however, is difficult and complex. With Three.js, it is possible to create stunning 3D graphics in an intuitive manner using JavaScript, without having to learn WebGL. With this book, you’ll learn how to create and animate beautiful looking 3D scenes directly in your browser-utilizing the full potential of WebGL and modern browsers. It starts with the basic concepts and building blocks used in Three.js. From there on, it will expand on these subjects using extensive examples and code samples. You will learn to create, or load, from externally created models, realistic looking 3D objects using materials and textures. You’ll find out how to easily control the camera using the Three.js built-in in camera controls, which will enable you to fly or walk around the 3D scene you created. You will then use the HTML5 video and canvas elements as a material for your 3D objects and to animate your models. Finally, you will learn to use morph and skeleton-based animation, and even how to add physics, such as gravity and collision detection, to your scene. After reading this book, you’ll know everything that is required to create 3D animated graphics using Three.js.
Table of Contents (14 chapters)
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Creating a geometry by extruding

Three.js provides a couple of ways in which we can extrude a 2D shape to a 3D shape. By extruding, we mean stretching out a 2D shape along its z axis to convert it to 3D. For instance, if we extrude a THREE.CircleGeometry, we get a shape that looks like a cylinder, and if we extrude THREE.PlaneGeometry, we get a cube-like shape. The most versatile way of extruding a shape is using the THREE.ExtrudeGeometry object.

THREE.ExtrudeGeometry

With THREE.ExtrudeGeometry, you can create a 3D object from a 2D shape. Before we dive into the details of this geometry, let's first look at an example: 03-extrude-geometry.html. The following screenshot taken...

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