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Learn ARCore - Fundamentals of Google ARCore
Learn ARCore - Fundamentals of Google ARCore

Learn ARCore - Fundamentals of Google ARCore: Learn to build augmented reality apps for Android, Unity, and the web with Google ARCore 1.0

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Learn ARCore - Fundamentals of Google ARCore

ARCore on Android

Google developed ARCore to be accessible from multiple development platforms (Android [Java], Web [JavaScript], Unreal [C++], and Unity [C#]), thus giving developers plenty of flexibility and options to build applications on various platforms. While each platform has its strengths and weaknesses, which we will get to later, all the platforms essentially extend from the native Android SDK that was originally built as Tango. This means that regardless of your choice of platform, you will need to install and be somewhat comfortable working with the Android development tools.

In this chapter, we will focus on setting up the Android development tools and building an ARCore application for Android. The following is a summary of the major topics we will cover in this chapter:

  • Installing Android Studio
  • Installing ARCore
  • Build and deploy
  • Exploring the code

If you...

Installing Android Studio

Android Studio is a development environment for coding and deploying Android applications. As such, it contains the core set of tools we will need for building and deploying our applications to an Android device. After all, ARCore needs to be installed to a physical device in order to test. Follow the given instructions to install Android Studio for your development environment:

  1. Open a browser on your development computer to https://developer.android.com/studio.
  2. Click on the green DOWNLOAD ANDROID STUDIO button.
  3. Agree to the Terms and Conditions and follow the instructions to download.
  4. After the file has finished downloading, run the installer for your system.
  5. Follow the instructions on the installation dialog to proceed. If you are installing on Windows, ensure that you set a memorable installation path that you can easily find later, as shown...

Installing ARCore

Of course, in order to work with or build any ARCore applications, we will need to install the SDK for our chosen platform. Follow the given instructions to install the ARCore SDK:

We will use Git to pull down the code we need directly from the source. You can learn more about Git and how to install it on your platform at https://git-scm.com/book/en/v2/Getting-Started-Installing-Git or use Google to search: getting started installing Git. Ensure that when you install on Windows, you select the defaults and let the installer set the PATH environment variables.
  1. Open Command Prompt or Windows shell and navigate to the Android (C:\Android on Windows) installation folder.
  2. Enter the following command:
git clone https://github.com/google-ar/arcore-android-sdk.git
  1. This will download and install the ARCore SDK into a new folder called arcore-android...

Build and deploy

Now that we have all the tedious installation stuff out of the way, it's time to build and deploy a sample app to your Android device. Let's begin by jumping back to Android Studio and following the given steps:

  1. Select the Open an existing Android Studio project option from the Welcome to Android Studio window. If you accidentally closed Android Studio, just launch it again.
  2. Navigate and select the Android\arcore-android-sdk\samples\java_arcore_hello_ar folder, as follows:
Selecting the ARCore sample project folder
  1. Click on OK. If this is your first time running this project, you will encounter some dependency errors, such as the one here:
Dependency error message
  1. In order to resolve the errors, just click on the link at the bottom of the error message. This will open a dialog, and you will be prompted to accept and then download the required...

Exploring the code

Now, let's take a closer look at the main pieces of the app by digging into the source code. Follow the given steps to open the app's code in Android Studio:

  1. From the Project window, find and double-click on the HelloArActivity, as shown:
HelloArActivity shown in the Project window
  1. After the source is loaded, scroll through the code to the following section:
private void showLoadingMessage() {
runOnUiThread(new Runnable() {
@Override
public void run() {
mLoadingMessageSnackbar = Snackbar.make(
HelloArActivity.this.findViewById(android.R.id.content),
"Searching for surfaces...",
Snackbar.LENGTH_INDEFINITE);
mLoadingMessageSnackbar.getView().setBackgroundColor(0xbf323232);
mLoadingMessageSnackbar.show();
}
});
}
  1. Note the highlighted text—"Searching for surfaces..". Select this text and change it to &quot...

Summary

In this chapter, we started our exploration of ARCore by building and deploying an AR app for the Android platform. We did this by first installing Android Studio, which will be our go-to Integrated Development Environment (IDE) for Android development. Then, we installed the ARCore SDK and ARCore service onto our test mobile device. Next, we loaded up the sample ARCore app and patiently installed the various required build and deploy dependencies. After a successful build, we deployed the app to our device and tested. Finally, we tested making a minor code change and then deployed another version of the app. Doing this assured us that our Android development environment was fully functional, and we are now ready to proceed to the rest of the book.

Our journey continues in the next chapter, where we will build and deploy an ARCore app with the Unity platform. Unity...

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Key benefits

  • Harness the power of the Google’s new augmented reality (AR) platform ARCore to build cutting-edge Augmented reality apps
  • Learn core concepts of Environmental Understanding, Immersive Computing, and Motion Tracking with ARCore
  • Extend your application by combining ARCore with OpenGL, Machine Learning and more.

Description

Are you a mobile developer or web developer who wants to create immersive and cool Augmented Reality apps with the latest Google ARCore platform? If so, this book will help you jump right into developing with ARCore and will help you create a step by step AR app easily. This book will teach you how to implement the core features of ARCore starting from the fundamentals of 3D rendering to more advanced concepts such as lighting, shaders, Machine Learning, and others. We’ll begin with the basics of building a project on three platforms: web, Android, and Unity. Next, we’ll go through the ARCore concepts of motion tracking, environmental understanding, and light estimation. For each core concept, you’ll work on a practical project to use and extend the ARCore feature, from learning the basics of 3D rendering and lighting to exploring more advanced concepts. You’ll write custom shaders to light virtual objects in AR, then build a neural network to recognize the environment and explore even grander applications by using ARCore in mixed reality. At the end of the book, you’ll see how to implement motion tracking and environment learning, create animations and sounds, generate virtual characters, and simulate them on your screen.

Who is this book for?

This book is for web and mobile developers who have broad programming knowledge on Java or JavaScript or C# and want to develop Augmented Reality applications with Google ArCore. To follow this book no prior experience with AR development, 3D, or 3D math experience is needed.

What you will learn

  • Build and deploy your Augmented Reality app to the Android, Web, and Unity platforms
  • Implement ARCore to identify and visualize objects as point clouds, planes, surfaces, and/or meshes
  • Explore advanced concepts of environmental understanding using Google ARCore and OpenGL ES with Java
  • Create light levels from ARCore and create a C# script to watch and propagate lighting changes in a scene
  • Develop graphics shaders that react to changes in lighting and map the environment to place objects in Unity/C#
  • Integrate motion tracking with the Web ARCore API and Google Street View to create a combined AR/VR experience
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Publication date : Mar 30, 2018
Length: 274 pages
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Language : English
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Table of Contents

12 Chapters
Getting Started Chevron down icon Chevron up icon
ARCore on Android Chevron down icon Chevron up icon
ARCore on Unity Chevron down icon Chevron up icon
ARCore on the Web Chevron down icon Chevron up icon
Real-World Motion Tracking Chevron down icon Chevron up icon
Understanding the Environment Chevron down icon Chevron up icon
Light Estimation Chevron down icon Chevron up icon
Recognizing the Environment Chevron down icon Chevron up icon
Blending Light for Architectural Design Chevron down icon Chevron up icon
Mixing in Mixed Reality Chevron down icon Chevron up icon
Performance Tips and Troubleshooting Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
(3 Ratings)
5 star 33.3%
4 star 0%
3 star 33.3%
2 star 0%
1 star 33.3%
Alex Jackson May 04, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Well written, easy to follow, concise without the fluff. I found the content to be very easy to digest as a new learner with little previous experience and was very happy with the speed at which I was able to establish a fundamental base in Core through reading the book. I recommend this title strongly and found the length manageable for a couple of sessions of reading and tinkering with the Core platform.
Amazon Verified review Amazon
Kartik Gupta Oct 09, 2018
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
This book is already outdated. Just look at the speed at which technology is updating itself.Some of the code they mentioned to look at the internet, has changed. This book is no longer useful. Better learn over the internet.
Amazon Verified review Amazon
Anonymus Dec 15, 2019
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
You are better off reading the outdated google documentation than this book. A lot of very important classes are not mentioned at all or are described in a way that it is impossible to understand. For example Quaternions.There are a lot of good videos on youtube which teach you the basics better.274 sites may seem to be a lot but a lot is just copy-pasta from the google documentation or is skipable for example if you just want to create an AR-App and wont use Unity or vice versa
Amazon Verified review Amazon
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