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Getting Started with React VR
Getting Started with React VR

Getting Started with React VR: Build immersive Virtual Reality apps for the web with React

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Getting Started with React VR

Flatland and Beyond: VR Programming

In the last chapter, you learned about what VR is and what it can be. How is it that programmers and developers (like you) create these virtual worlds? We found out that it is a difficult thing to do right. We have to maintain fast frame rates and proper stereoscopic rendering. How do we do that quickly and easily? Read on and find out how.

In this chapter, we'll cover the following topics:

  • HTML and common programming methods, such as Node.js, JavaScript, and game engines
  • The React Library
  • Graphics libraries, for displaying 2D and 3D images
  • How to install all of these software so that we can begin programming

HTML and ways to move beyond the 2D internet

While the web was developed, the early HTML language has evolved dramatically. A good web page experience typically involves more than just HTML. One of those ways to add more interactivity is via JavaScript. The combination of HTML, XML, and JavaScript is a large portion of what delivers the web, including applications, such as Google Documents or online Microsoft Word (also free).

These are, however, flat. To move into the third dimension has traditionally taken high–speed software, usually written in C++. As computers have gotten faster and faster and Graphics Processing Units (GPU) have taken over the bulk of the actual 3D generation, languages to describe 3D games have evolved.

There are currently quite a number of ways to program in VR. It is challenging to generate 90 frames per second at the resolution the Rift and...

Making servers React

React VR is based on React, a framework that allows web pages and interactive User Interfaces to built by declaration instead of programming. You build views for each state in the application, and then React will use the correct components to display that application.

Declarative views make your code easier, more robust, and easier to modify and debug.

Components use the Object-Oriented concept of encapsulation, meaning they are self-sufficient and manage their own state. You then take these components and use them to make complex UIs.

React allows developers to create applications that change over time, without having to constantly refresh a browser page. It uses the Model-View-Controller design pattern/template and can be used in combination with other JavaScript libraries, such as Angular.JS.

React was first used with Facebook's newsfeed in 2011. It...

Graphics libraries — OpenGL and WebGL

This section covers general 3D programming, but some discussion of different things is in order.

OpenGL is a standard for displaying graphics. Without getting into PC versus Workstation politics (ancient history now), it was a standard that a workstation vendor (SGI) pioneered to standardize computer graphics and the ability for programs to display graphics.

There are other APIs, such as DirectX, which was backed by Microsoft and many PC game developers, CAD software, and other PC computer graphics.

OpenGL is not, strictly speaking, open source; yet the software can be used without royalty payments and is documented and freely available (to be fair, so is DirectX).

Basically, OpenGL is a way for software to display graphics. Software, in this case, usually means C++ (or other languages that can call native libraries and O/S utilities...

Installation of Node.js and React VR

Most desktop VR hardware currently available use Windows; because of this, the following instructions, and indeed most of this book will be a mixture of Windows installations and GearVR viewing. At the time of writing, Linux could be hacked to work with the HTC Vive and Oculus Rift, but it's a difficult road and a bit beyond the scope of this book. Apple PCs are just adding the capability to add an external video card for VR, as most of them simply do not have the video processing capability to render VR at the resolutions used by the Vive and Rift headsets.

React is, however, not PC specific. You could build all of the examples in this book with Linux or a Mac, and follow alongside, and use a Google Daydream, Unofficial Cardboard, or Samsung Gear VR to view all of the samples. In this case, some of the examples may use slightly different...

Summary

In this chapter, we covered the basics of how to actually program VR worlds, and what software to use. We also went through installing the React VR system so that we could develop our own VR worlds! In the next chapter, we'll cover 3D basics and the math that we will need to build our VR worlds.

Don't worry about the math; there won't be a popup quiz.

Now to actually create an interesting world. But first, we need to understand what the world consists of. The next section will describe the React VR terminology to describe your virtual world.

 

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Key benefits

  • •A practical guide to developing virtual reality experiences targeting web and mobile browsers
  • •Create customized 3D graphics for your virtual reality experiences with Three.js
  • •Explore the ReactVR library to create objects that seem real and see how they move in the Virtual world
  • •Import free models into VR and include those in your code

Description

This book takes you on a journey to create intuitive and interactive Virtual Reality experiences by creating your first VR application using React VR 2.0.0. It starts by getting you up to speed with Virtual Reality (VR) and React VR components. It teaches you what Virtual Reality (VR) really is, why it works, how to describe 3D objects, the installation of Node.js (version 9.2.0) and WebVR browser. You will learn 3D polygon modeling, texturing, animating virtual objects and adding sound to your VR world. You will also discover ways to extend React VR with new features and native Three.js. You will learn how to include existing high-performance web code into your VR app. This book will also take you through upgrading and publishing your app. By the end of this book, you'll have a deep knowledge of Virtual Reality and a full-fledged working VR app to add to your profile!

Who is this book for?

This book is for web developers who want to use their existing skill set of HTML, CSS, and JavaScript to create virtual reality experiences.

What you will learn

  • • Use Blender 2.79 to make virtual reality objects for Web VR.
  • • Import free models into VR and how to include those in your code
  • • Build a Virtual Museum with interactive art pieces
  • • Create your first VR App and customizing it
  • • Build animations by procedurally changing an object s position, using timers and Animated APIs
  • • Incorporate React Native code and JavaScript code in your VR world
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Nov 30, 2017
Length: 294 pages
Edition : 1st
Language : English
ISBN-13 : 9781788476607
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Product Details

Publication date : Nov 30, 2017
Length: 294 pages
Edition : 1st
Language : English
ISBN-13 : 9781788476607
Vendor :
Facebook
Languages :
Tools :

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Table of Contents

12 Chapters
What is Virtual Reality, Really? Chevron down icon Chevron up icon
Flatland and Beyond: VR Programming Chevron down icon Chevron up icon
3D or Reality in Dimensions Other than X and Y Chevron down icon Chevron up icon
The React VR Library Chevron down icon Chevron up icon
Your First VR App Chevron down icon Chevron up icon
Working with Poly and the Gon Family Chevron down icon Chevron up icon
Sitting Down with a (Virtual) Teapot Chevron down icon Chevron up icon
Breath Life in Your World Chevron down icon Chevron up icon
Do It Yourself – Native Modules and Three.js Chevron down icon Chevron up icon
Bringing in the Real Live World Chevron down icon Chevron up icon
Take a Walk on the Wild Side Chevron down icon Chevron up icon
Publishing Your App, and Where to Go from Here Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Full star icon 5
(4 Ratings)
5 star 100%
4 star 0%
3 star 0%
2 star 0%
1 star 0%
Athos Delafere Mar 09, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
The book is written in plain English and easy to follow. A fantastic introduction to React VR!
Amazon Verified review Amazon
Gary Meade May 15, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
The author gives a very good up-to-date view of the VR industry and good guidelines to a new VR developer. There are small numbers who really understand VR, so insight into the VR world is very limited. Web based VR is only a sliver of the industry pie, but will prove to be a very good pathway for the right project.
Amazon Verified review Amazon
Elaine Ash Jan 17, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
At last, a tech-book written with verve and flair!!! John Gwinner's considerable experience with online communications shines through as he avoids geek-speak and keeps explanations well-grounded for average readers. The book takes nothing for granted and starts off with a clear and concise explanation of virtual reality today, then unlocks the secrets to creating your own VR site and more. Creators will be itching to get started once they see this reader-friendly information, laid out with pictures and explanations. The equipment needed is fairly simple and low-cost as well. The chapters are logical, clear, never staid or boring--Gwinner has a writing voice and style all his own. If you have an interest in VR, or know someone who does, this book is the real deal.
Amazon Verified review Amazon
Paul H. Dunham Jul 05, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I am a back-end Javascript developer. I was not familiar with front-end or VR at all. I found this book a great primer for getting started in VR coding. The author makes it easy to understand and easy to build your first app.
Amazon Verified review Amazon
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