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  • Learning Three.js: The JavaScript 3D Library for WebGL - Second Edition
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Learning Three.js: The JavaScript 3D Library for WebGL - Second Edition

Learning Three.js: The JavaScript 3D Library for WebGL - Second Edition

By : Jos Dirksen
4.4 (14)
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Learning Three.js: The JavaScript 3D Library for WebGL - Second Edition

Learning Three.js: The JavaScript 3D Library for WebGL - Second Edition

4.4 (14)
By: Jos Dirksen

Overview of this book

If you know JavaScript and want to start creating 3D graphics that run in any browser, this book is a great choice for you. You don't need to know anything about math or WebGL; all that you need is general knowledge of JavaScript and HTML.
Table of Contents (14 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Creating Your First 3D Scene with Three.js
1. Creating Your First 3D Scene with Three.js
Requirements to use Three.js
Getting the source code
Creating the HTML skeleton
Rendering and viewing a 3D object
Adding materials, lights, and shadows
Expanding your first scene with animations
Using dat.GUI to make experimenting easier
Automatically resize the output when browser size changes
Summary
2
2. Basic Components That Make Up a Three.js Scene
2. Basic Components That Make Up a Three.js Scene
Creating a scene
Geometries and meshes
Different cameras for different uses
Summary
3
3. Working with the Different Light Sources Available in Three.js
3. Working with the Different Light Sources Available in Three.js
Different kinds of lighting provided by Three.js
Basic lights
Special lights
Summary
4
4. Working with Three.js Materials
4. Working with Three.js Materials
Understanding common material properties
Starting with a simple mesh
Advanced materials
Materials you can use for a line geometry
Summary
5
5. Learning to Work with Geometries
5. Learning to Work with Geometries
The basic geometries provided by Three.js
Summary
6
6. Advanced Geometries and Binary Operations
6. Advanced Geometries and Binary Operations
THREE.ConvexGeometry
THREE.LatheGeometry
Creating 3D text
Using binary operations to combine meshes
Summary
7
7. Particles, Sprites, and the Point Cloud
7. Particles, Sprites, and the Point Cloud
Understanding particles
Particles, THREE.PointCloud, and THREE.PointCloudMaterial
Styling particles with the HTML5 canvas
Using textures to style particles
Working with sprite maps
Creating THREE.PointCloud from an advanced geometry
Summary
8
8. Creating and Loading Advanced Meshes and Geometries
8. Creating and Loading Advanced Meshes and Geometries
Geometry grouping and merging
Summary
9
9. Animations and Moving the Camera
9. Animations and Moving the Camera
Basic animations
Working with the camera
Morphing and skeletal animation
Creating animations using external models
Summary
10
10. Loading and Working with Textures
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10. Loading and Working with Textures
Using textures in materials
Advanced usage of textures
Summary
11
11. Custom Shaders and Render Postprocessing
11. Custom Shaders and Render Postprocessing
Setting up Three.js for postprocessing
Postprocessing passes
Creating custom postprocessing shaders
Summary
12
12. Adding Physics and Sounds to Your Scene
12. Adding Physics and Sounds to Your Scene
Creating a basic Three.js scene
Material properties
Basic supported shapes
Using constraints to limit movement of objects
Summary
13
Index
Index

Using textures in materials

There are different ways textures are 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 look at, though, is the most basic approach, where we use a texture to define the colors of the individual pixels of a mesh.

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:

function createMesh(geom, imageFile) {
  var texture = THREE.ImageUtils.loadTexture("../assets/textures/general/" + imageFile)

  var mat = new THREE.MeshPhongMaterial();
  mat.map = texture;

  var mesh = new THREE.Mesh(geom, mat);
  return mesh;
}

In this code sample, we use the THREE.ImageUtils.loadTexture function to load an image file...

End of Section 2
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