Book Image

Augmented Reality with Unity AR Foundation

By : Jonathan Linowes
2 (1)
Book Image

Augmented Reality with Unity AR Foundation

2 (1)
By: Jonathan Linowes

Overview of this book

Augmented reality applications allow people to interact meaningfully with the real world through digitally enhanced content. The book starts by helping you set up for AR development, installing the Unity 3D game engine, required packages, and other tools to develop for Android (ARCore) and/or iOS (ARKit) mobile devices. Then we jump right into the building and running AR scenes, learning about AR Foundation components, other Unity features, C# coding, troubleshooting, and testing. We create a framework for building AR applications that manages user interaction modes, user interface panels, and AR onboarding graphics that you will save as a template for reuse in other projects in this book. Using this framework, you will build multiple projects, starting with a virtual photo gallery that lets you place your favorite framed photos on your real-world walls, and interactively edit these virtual objects. Other projects include an educational image tracking app for exploring the solar system, and a fun selfie app to put masks and accessories on your face. The book provides practical advice and best practices that will have you up and running quickly. By the end of this AR book, you will be able to build your own AR applications, engaging your users in new and innovative ways.
Table of Contents (14 chapters)
Section 1 – Getting Started with Augmented Reality
Section 2 – A Reusable AR User Framework
Section 3 – Building More AR Projects

Troubleshooting with log messages

If (and when) an error occurs while developing or running your Unity project, the first thing you must do is consult the Console window for messages. The Console window is where you'll find all kinds of messages including asset import warnings, compiler errors, runtime errors in play mode, build problems when you Build And Run, and others. Compiler errors (such as coding syntax errors) may prevent the scene from running at all (and the Play button will become disabled).

There are three levels of console messages: Info, Warning (shown in orange), and Error (shown in red). You can filter the messages using the toggle buttons in the Console window toolbar, as highlighted in the following screen capture:

Figure 3.1 – The Console window showing a null exception error

Runtime errors, such as the ArgumentNullException error shown in the preceding screenshot, can occur during program execution when you try to use a...